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Home My WebLink About20251295.tiffCOLORADO Division of Reclamation, Mining and Safety Department of Natural Resources November 6, 2024 RE: Sweet Valley Pit, Permit No. M-2024-015 Recommendation to Approve a 112c Permit Application with Objections Dear Party and/or Interested Person: The Division of Reclamation, Mining and Safety (Division) hereby issues its recommendation to approve the 112c permit application (Application) for the Sweet Valley Pit, File No. M-2024-015, submitted by Central Colorado Water Conservancy District (Applicant). This recommendation is based on the Division's determination that the Application satisfied the requirements of Section 34-32.5-115(4) of the Colorado Land Reclamation Act for the Extraction of Construction Materials, 34-32.5-101 et seq., C.R.S. (Act). The Applicant addressed all adequacy issues which were identified by the Division during the adequacy review process to the Division's satisfaction. Therefore, on November 6, 2024, the Division determined the Application satisfied the requirements of C.R.S. 34-32.5-115(4) and issued its recommendation to approve the Application over objections. The Division's rationale for approval (Rationale) identifies that the objections raised are all outside the jurisdiction of the Division and the Colorado Mined Land Reclamation Board (Board). The issues raised by the objecting parties were grouped into the following four categories: 1) Concerns regarding aesthetic impact and quality of life 2) Concerns regarding the use of County Road 25.5 3) Concerns regarding dust and air pollution 4) Concerns regarding intergovernmental agreements The Division's Rationale provides a full and thorough analysis of the four broad categorical issues (listed above) which were raised by the objecting parties. A copy of the Division's Rationale is enclosed and is also available for public review on the Division's website at https://drms.colorado.gov/, by clicking on DRMS Electronic Documents (Laserfiche Weblink) then entering the file number "M2024015" into the Permit No. field and hitting Enter. The Division's recommendation to approve the Application is to the Colorado Mined Land Reclamation Board (Board). The Division received timely written objections to the Application. Therefore, pursuant to Rules 1.4.9(2)(a) and 1.7.4(2), the Division has scheduled the Application for consideration by the Board. During the hearing, the Board will consider the Application with objections and may decide to approve, approve with conditions, or deny the Sweet Valley Pit application. The Formal Board Hearing is scheduled to occur during the December 11-12, 2024 Board meeting, beginning at 9:00 a.m. on December 11th, or as soon thereafter as the matter can be considered. Pursuant to co Physical: 1313 Sherman Street, Room 215, Denver, CO 80203 I P: 303.866.3567 I F: 303.832.8106 Mailing: DRMS Room 215, 1001 E 62nd Ave, Denver, CO 80216 I https://drms.colorado.gov Jared Polis, Governor I Dan Gibbs, Executive Director I Michael A. Cunningham, Director November 6, 2024 Recommendation to Approve a 112c Permit Application with Objections Sweet Valley Pit, File No. M-2024-015 Page 2 of 2 Rule 2.7.1(5), the Pre -hearing Conference will be held after the Office has issued its written recommendation and at least 10 calendar days prior to the Formal Board Hearing. Additional details on the Pre -hearing Conference (once it is scheduled) and the Board Hearing will be provided under separate cover. If you have any questions, you may contact me by telephone at 720-774-0040 or by email at brock.bowles@state.co.us. Sincerely, isA•Aid". Brock Bowles Environmental Protection Specialist Encls: Rationale for Recommendation to Approve a 112c Permit Application with Objections, Sweet Valley Pit Rationale, File No. M-2024-015, dated November 6, 2024 Guide to Public Participation in the 112 Reclamation Permit Application Process for Construction Materials and Hard Rock/Metal Mining Operations Ec: Wenli Dickinson, P.E., Division of Water Resources at: wenli.dickinson@state.co.us Lexi Hamous, Colorado Parks and Wildlife at: lexi.hamous-miller@state.co.us Todd Scott, at: toddscott35@gmail.com Lacy Jo Mirus, at: laceyjol7@hotmail.com Hillary Ellis, at: hillary@greeleylockandkey.com Derek Ellis, at: derek@greeleylockandkey.com Town of Gilcrest, at: dan@townofgilcrest.org Randy Ray, Central Colorado Water Conservancy District at: rray@ccwcd.org J.C. York, J&T Consulting, Inc. at: jcyork@j-tconsulting.com Zach Trujillo, DRMS at: zach.trujillo@state.co.us Jason Musick, DRMS at: Jason.musick@state.co.us Russ Means, DRMS at: russ.means@state.co.us Jeff Fugate, AGO at: jefffugate@coag.gov Scott Schultz, AGO at: scott.schultz@coag.gov Charles Kooyman, AGO at: charles.kooyman@coag.gov ISO November 6, 2024 COLORADO Division of Reclamation, Mining and Safety Department of Natural Resources Re: Sweet Valley Pit, Permit No. M-2024-015 New Permit Application with Objections Division's Rationale for Recommendation for Permit Application Approval Introduction On November 6, 2024, the Division of Reclamation, Mining and Safety (Division/Office/DRMS) issued its recommendation to approve the permit application for the Sweet Valley Pit, File No. M- 2024-015, over objections. This rationale document is intended to explain the process by which the Division arrived at its recommendation for approval with conditions over objections and respond to the issues raised by the objecting parties. The Division reserves the right to further supplement, amend, modify, or clarify this document and recommendation with additional details as necessary.' Summary of the Review Process for the Permit Application The Central Colorado Water Conservancy District (CCWCD/Applicant) submitted a 112c permit application to the Division on April 8, 2024. The permit application was deemed complete by the Division for the purposes of filing and review on April 19, 2024. On September 10, 2024, CCWCD amended their 112c permit application, which constituted as a new filing for the purpose of determining the date for consideration by the Office and for the deadline for a final decision on the application pursuant to Rule 1.8.1(3). The CCWCD's amended application proposes to permit 150.92 acres for a new sand and gravel pit. The site is located in Weld County, approximately 2.0 miles west of Gilcrest, CO. The Applicant intends to mine sand and gravel for road base and construction aggregate uses. The post mining land use proposed for the site is developed water resource which will consist of 2 separate ponds. The mining process will take place in four phases. Phases 1A (north pond) and 2A (south pond) will dry mine material down to 24 inches above the high-water table. Phases 1 and 2 will mine each pond down to bedrock after a slurry wall has been installed around each pond. Groundwater will not be exposed prior to the slurry wall installation, which will require the Applicant to obtain the ' Herein, all references to the Act and Rules refer to the Colorado Land Reclamation Act for the Extraction of Construction Materials, 34-32.5-101 et seq., C.R.S. (the Act), and to the Mineral Rules and Regulations of the Colorado Mined Land Reclamation Board for the Extraction of Construction Materials (the Rules or Rule). Copy of the Act and Rules are available through the Division's web site at https://drms.colorado.gov/rules-and-regulations. Physical Address: 1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 Mailing Address: DRMS Room 215, 1001 E 62nd Ave, Denver, CO 80216 https://drms.colorado.gov Jared S. Polis, Governor I Dan Gibbs, Executive Director I Michael A. Cunningham, Director Sweet Valley Pit, Rationale November 6, 2024 Page 2 of 4 necessary associated well permit(s) and an approved Substitute Water Supply Plan with the CO Division of Water Resources (DWR). The CCWCD is proposing to post bond for phase 1A and the facilities area. Additional bond will be posted before subsequent phases are started. The Applicant filed a Petition for a Declaratory Order with the Mined Land Reclamation Board (MLRB/Board) to be exempt from the Board's financial warranty requirements because of CCWCD's status as a quasi -municipal corporation. CCWCD's Petition would be considered by the MLRB if the board approves the application over objections. Pursuant to C.R.S. Section 34-32.5-112(9)(b), Rule 1.6.2(1)(d), Rule 1.6.5 and Rule 1.8.1, the Applicant published the required public notices for both the initial permit application and for the amendment to the application once a week for four consecutive weeks. The first publication for the initial application began on April 26, 2024, with the last date of publication on May 17, 2024. The first public comment period closed on June 6, 2024. The second publication for the amendment to the application began on September 13, 2024, with the last date of publication on October 4, 2024. The second public comment period closed on October 24, 2024. All public notices were published in the Greeley Tribune, a publication in general circulation in the vicinity of the proposed mine. During the public comment periods, the Division received five (5) written objections through the DRMS website and two (2) comments from the individuals and agencies listed below. There were no untimely letters of objection or comment letters to the application received by the Division. Timely Letters of Objection: Person or Entity Date Objection Received Todd Scott June 5, 2024 Derek Ellis June 6, 2024 Hillary Ellis June 6, 2024 Lacey Jo Mirus June 6, 2024 Town of Gilcrest October 22, 2024 Timely Commenting Agency: Agency Date Comment Received Division of Water Resources April 25, 2024 Colorado Parks and Wildlife May 3, 2024 The Division forwarded copies of the objections and comments to the Applicant and scheduled the amendment application for a mining permit for a Pre -hearing Conference and a hearing before the MLRB. The Division provided notice of the scheduled Pre -hearing Conference and Board hearing to Sweet Valley Pit, Rationale November 6, 2024 Page 3 of 4 all parties and interested persons. As a result of the timely objections received, the Division cannot procedurally make a decision on the application amendment for a mining permit, but rather makes a "recommendation" to the Board. During the review period the Division generated one (1) adequacy letter. The Applicant addressed all adequacy issues to the Division's satisfaction. Therefore, on November 6, 2024, the Division determined that the permit application satisfied the requirements of C.R.S. § 34-32.5-115(4) Issues Raised by the Objecting Parties It is the Division's position that the objections raised are all outside of the jurisdiction of the Division and Board, and therefore should not be categorized as jurisdictional items for consideration by the Board. The non -jurisdictional issues, as explained below, are more appropriately addressed by Weld County, CDOT, and CDPHE's Air Pollution Control Division. The issues raised by the objecting parties are represented by italic bold font. The last names of the objecting parties who raised the issue are listed after the issue. The Division's response follows in standard font. 1. Non -Jurisdictional Items Raised by the Objecting Parties In proceedings before the Board, jurisdiction is limited to enforcement of the specific requirements of the Act and Rules. The Division recognizes the importance of all timely submitted objections and comments in its review, but can address only the issues that directly relate to the specific requirements of an application as stated in the Act and Rules. a. Concerns regarding aesthetic impact and quality of life. (D. Ellis, H. Ellis, and Mirus) The Act and Rules do not address impacts to visually appealing landscapes, aesthetics, hours and/or days of operation, and quality of life. The Division and Board do not have jurisdiction over these issues, which are typically addressed at the local government level. These issues should be addressed with Weld County. The Applicant has affirmatively stated in Exhibit M of the permit application that a Weld County Use By Special Review Permit will be obtained prior to operations. b. Concerns regarding the use of County Road 25.5. (D. Ellis, H. Ellis, Scott, and Mirus) The Act and Rules which provide the jurisdiction of the Division and Board do not address public road access, use, or design issues. Such issues are under the jurisdiction of Colorado Department of Transportation (CDOT) and the Weld County Department of Public Works. The Applicant has affirmatively stated in Exhibit M of the permit application that a Weld County Use By Special Review Permit will be obtained prior to operations. Sweet Valley Pit, Rationale November 6, 2024 Page 4 of 4 c. Concerns regarding dust and air pollution. (Scott) The Act and Rules do not specifically address air quality issues. Such issues are under the jurisdiction of Weld County and the Air Pollution Control Division (APCD) of the Colorado Department of Public Health and Environment (CDPHE). The Applicant has affirmatively stated in Exhibit M of the permit application that an Air Pollution Emission Notice will be obtained prior to operations. The Act and Rules do not authorize the Division to directly regulate dust or air pollution issues. However, the protection and preservation of stockpiled topsoil is addressed under the performance standards of Rule 3.1.9. Pursuant to Rule 3.1.9(1), where it is necessary to remove overburden in order to expose the mineable materials, topsoil shall be removed and segregated from other spoil. If such topsoil is not replaced on a backfill area within a time short enough to avoid deterioration of the topsoil, vegetative cover or other means shall be employed so that the topsoil is protected from erosion, remains free of any contamination by toxic or acid-forming material, and is in a usable condition for reclamation. The Division has determined one year to be an appropriate time frame for the establishment of a protective vegetative cover for stockpiled topsoil for similar mining operations throughout Colorado. The Applicant has committed to establish vegetation on the topsoil stockpiles and committed to taking appropriate erosion control measures to stabilize topsoil stockpiles and berms. The Applicant has indicated that water will be used for dust control at the site. d. Concerns regarding a lack of intergovernmental agreement, cost reimbursement agreement and financial deposit between CCWCD and the Town of Gilcrest. (Town of Gilcrest) The Act and Rules do not address intergovernmental agreements or contracts that occur between local government and quasi -government entities such as CCWCD. Such agreements are considered by the Division as business arrangements that are outside the jurisdiction of the Division or Board. The Applicant has affirmatively stated in Exhibit M of the permit application that additional required permits and licenses will be obtained prior to operations which includes a Weld County Use By Special Review Permit. Conclusion After conducting a thorough technical review of the application, as outlined in part in the discussion above, on November 6, 2024, the Division has determined the permit application satisfied the requirements of the Act and Rules, and specifically C.R.S. § 34-32.5-115(4), and is issuing its recommendation to approve the Construction Materials 112 permit application for the Sweet Valley Pit, File No. M-2024-015 over objections. SO COLORADO Division of Reclamation, Mining and Safety Department of Natural Resources MEMORANDUM To: Whom it May Concern From: Division of Reclamation, Mining and Safety, Minerals Program Date: October 2, 2001; Revised on October 19, 2001, August 2, 2004, January 12, 2006, and October 7, 2021 Re: Guide to Public Participation in the 112 Reclamation Permit Application Process for Construction Materials and Hard Rock/Metal Mining Operations Thank you for taking the time to be involved in the State of Colorado's process of reviewing applications for new mining operations or amendments to existing permits. The purpose of this memorandum is to explain the 112 reclamation permit application process for construction materials and hard rock/metal mining operations, your rights as either a party or a non-party, and the jurisdiction of the Mined Land Reclamation Board (MLRB or the Board). Background Colorado's general assembly codified Colorado's Mined Land Reclamation Act (§ 34-32-101, C.R.S., et seq.) and the Land Reclamation Act for the Extraction of Construction Materials (§ 34-32.5-101, C.R.S., et seq.; together "Acts") to regulate mining operations in the state. The corresponding Mineral Rules and Regulations of the Colorado Mined Land Reclamation Board for Hard Rock, Metal, and Designated Mining Operations ("Hard Rock/Metal Mining") and Extraction of Construction Materials ("Construction Materials") were subsequently promulgated by the Mined Land Reclamation Board (2 C.C.R. 407-1 and 2 C.C.R. 407-4; together "Rules"). The Acts and Rules are available at: https://drms.colorado.gov/rules-and-regulations. The Minerals Program of the Division of Reclamation, Mining and Safety (Division or DRMS) issues various types of mining permits, including for: 110 Limited Impact Operations, 110 Limited Impact Designated Mining Operations, 111 Special Operations, 112 Regular Operations, and 112 Regular Designated Mining Operations. All permit applications are available at: https://drms.colorado.gov/forms/minerals-program-forms. This document is focused solely on the application review process for 112 reclamation permit applications. The Role of the Mined Land Reclamation Board Pursuant to the Acts, the Board has exclusive jurisdiction over the reclamation of a mining operation's affected lands. A reclamation permit establishes a post -mining land use for the affected lands. The post -mining land use may be for forest, rangeland, cropland, general agriculture, residential, recreational, industrial/commercial, developed water resources, or other "uses". Although the Board does not have jurisdiction over local land use decisions (e.g., visual impacts, economic impacts, noise, traffic), a permit Applicant must obtain all required permits, licenses, and approvals prior to conducting any mining operations. Local governmental entities have jurisdiction over their land use, zoning, and permitting processes. A reclamation permit Applicant may not be required to have all necessary approvals or permits from other agencies in place, including city and county zoning and land use permits, before a reclamation permit is issued. The Board is a multi -interest citizen board which establishes the regulations, standards, and policies that guide the Division. Colorado's governor appoints five Board members from nominations submitted by each of the various constituencies represented, resulting in two members with substantial experience in the mining industry, two with substantial experience in conservation and environmental resources, and one with substantial experience in agriculture. A sixth Board member is the Executive Director of the Department of Natural Resources, or his/her appointee, and the seventh is a member of the State Soil Conservation Board. (§ 34-32-105, C.R.S.). The Board typically meets for one to two days every month. Some of the Board's responsibilities include: promulgating Rules that implement the Acts; issuing violations, civil penalties, and cease and desist orders; determining corrective actions for operators found in violation of the Acts and Rules; and conducting hearings regarding reclamation permit applications. The Role of the Division Division staff specialize in numerous areas including geology, biology, wildlife management, range and soil science, engineering, hydrology, and chemistry. During the reclamation permit application process, the Division is responsible for ensuring that the contents of the application adequately address the requirements of the Acts and Rules. To monitor compliance with permit requirements, the Division conducts periodic inspections of all permitted mining, exploration, and prospecting operations in Colorado. If an operator fails to timely correct any compliance issues identified during an inspection, the Division may present the possible violations to the Board. The Division calculates the reclamation bond required for a proposed mining operation based on the operator's proposed reclamation plan. The bond is reassessed periodically throughout the life of mine to ensure it is sufficient for reclaiming the site in accordance with the approved plan. Where there is a written objection to a permit application or a request for reconsideration of a Board decision, the Division serves as staff to the Board. For 112 applications that receive no timely objections, or for which, all objecting parties withdraw prior to the scheduled Board Hearing, the Division is authorized to approve or deny the application without a hearing before the Board. 2 The Role of the Applicant During the reclamation permit application process, the Applicant has the burden of proving the application submitted to the Division meets all requirements of the Acts and Rules, including providing sufficient evidence that all required notices have been posted or delivered within the required timeframes. Applicants for 112 Reclamation Permits or Amendments must place a copy of the application at the County Clerk or Recorder's office in the county containing the land to be affected by mining. The Applicant must notify the local Board of County Commissioners, the Board of Supervisors of the local Soil Conservation District, all surface and mineral rights owners of the affected lands, and all surface owners within 200 feet of the affected lands. The Applicant must also post signs at the proposed mine site and publish a public notice in a local newspaper of general circulation once a week for four consecutive weeks. The Role of the Public Participant A person may participate in the Board Hearing process regarding a contested reclamation permit application as a party or a non-party. Pursuant to the Acts and Rules, a person may participate as a "party" if they: (1) Submit a written comment or objection to the Division not more than 20 calendar days after the last date for the newspaper publication of notice of the application. The comment or objection letter must include the person's: name, mailing address, telephone number, and an explanation of how they are directly and adversely affected or aggrieved by the proposed mining operation [see "party" definition in Construction Materials Rule 1.1(38) and Hard Rock/Metal Mining Rule 1.1(50)]. To ensure timely receipt, any comments or objections on an application should be submitted via our website at: https://dnrlaserfiche.state.co.us/Forms/DRMS Comment; and (2) Attend the Pre -hearing Conference or provide a proxy authorization form (see attached Authorization to Appear on Behalf of a Party) to the Board's Pre -hearing Conference Officer on or before the date of the Pre -hearing Conference and the Party's authorized representative is present at the conference [pursuant to Rule 2.7.3(4)]. Any party may be represented by an attorney; and (3) Attend the Board Hearing. A party may present evidence, call witnesses, and cross-examine witnesses during the Board Hearing on the application. A party also has the right to sue or be sued in district court on matters regarding the Board's decision on the application. For additional information regarding a party's rights and responsibilities, please refer to Rules 1.7, 2.6, 2.7, 2.8, and 2.9. 3 Per Rule 2.7.3(3), any person who is a party to a matter before the Board, and who wishes to withdraw as a party, must do so in writing prior to the commencement of, or on the record during, the Formal Board Hearing on the matter (see attached Party Status Withdrawal Form). If you choose not to be a party, or to withdraw your party status, as a non-party, you may still address the Board on matters of concern during the public comment portion of the Board meeting. However, in this case, you will not preserve or be entitled to the rights of a party. In the event that all objecting parties withdraw prior to the Board Hearing, the Division is authorized to approve or deny the application without consideration by the Board. Thus, in this instance, there would be no opportunity for a non-party to provide public comment at a Board Hearing. The Role of Other Governmental Agencies Once a reclamation permit application is received by the Division and considered "filed" (or "complete"), the Division sends a notice of the application to various local, state, and federal agencies. These governmental agencies may include: county commissioners, county planning and zoning departments, Colorado Parks and Wildlife, Colorado Department of Public Health and Environment, Colorado Division of Water Resources/Office of the State Engineer, local Conservation District(s), Colorado State Land Board, State Historic Preservation Office, U.S. Army Corps of Engineers, Colorado Oil and Gas Conservation Commission (for sites that overlap oil and gas facilities or are surrounded by oil and gas activity), Urban Drainage (for sites located within the 100 year floodplain in Adams, Arapahoe, Boulder, Denver, Douglas, or Jefferson County), U.S. Bureau of Land Management and/or U.S. Forest Service (for sites located on federal lands), and any municipalities located within 2 miles of the proposed affected lands. The Division's review of the application may be coordinated with these and/or other governmental agencies as appropriate. The 112 Reclamation Permit Application Process Completeness Review: Upon receipt of an application, the Division first determines whether it contains sufficient information for it to be considered "filed" (or "complete"), as defined by Construction Materials Rule 1.1(23) and Hard Rock/Metal Mining Rule 1.1(27). Adequacy Review: Once a 112 reclamation permit application is considered filed, the Division has 90 days to complete its adequacy review of the application and to make its decision to approve, approve with conditions, or deny the application. During the adequacy review process, the Division evaluates each exhibit in the application to verify that it meets all applicable requirements of the Acts and Rules (exhibit requirements are outlined in Rule 6). If the Division determines an exhibit is inadequate, it will send an adequacy review letter to the Applicant identifying the deficiencies. The Applicant must address all deficiencies in the application to the satisfaction of the Division in order for the application to be approved. The 90 -day application review period may be extended at the request of the Applicant, not to exceed 365 days from the date the application was filed, in order to provide the necessary information to meet the adequacy requirements. The 90 -day application review period may also be extended by the Division in accordance with Rule 1.4.1(7) in the case of "complex" applications, serious unforeseen circumstances, or significant snow cover on the affected land that 4 prevents a necessary on -site inspection, or Rule 1.4.1(13) where the Applicant failed to publish the public notice pursuant to Rule 1.6.2(1)(d). If the Division's review period is extended, the decision date on the application is reset. If no timely objections are received on a 112 reclamation permit application, the Division will make the decision to approve, approve with conditions, or deny an application on or before the decision date. If timely objections are received on a 112 reclamation permit application, the Division will schedule the matter for a formal Board Hearing, during which, the Board will make the final decision on the application. In this case, on or before the application decision date, the Division will make a recommendation to the Board on whether to approve or deny the application. Such recommendation shall identify the issues raised by the Division or by timely objectors. The Division's recommendation and rationale for approval or denial shall be sent to all parties at least 3 working days prior to the Pre - hearing Conference. While a reclamation permit application may be approved by the Division or the Board, the permit is not issued until the required performance and financial warranties are received. Pre -hearing Conference: A Pre -hearing Conference is held after the Division has issued its recommendation and rationale on the application, and at least 10 calendar days prior to the Board Hearing. Persons seeking to participate in the hearing process are encouraged to review Rules 2.6, 2.7, and 2.8 prior to the Pre -hearing Conference. The purpose of the Pre -hearing Conference, which is held by a Pre -hearing Conference Officer ("PHCO") delegated by the Board, is to explain the Division's application review and Board Hearing processes, identify issues raised that are within and outside of the Board's jurisdiction, and recognize the parties. Following the Pre -hearing Conference, the PHCO drafts a proposed Pre -hearing Order for the Board to consider at the hearing. The PHCO's proposed Order recommends a list of parties, identifies issues within the Board's jurisdiction to be considered at the Board Hearing, and proposes a hearing schedule with time allotments (the Board may adopt this Order as drafted or amend it). Please note that parties are required to present their list of all potential witnesses and exhibits at the Pre -hearing Conference in accordance with Rule 2.6(2). Board Hearing: The Division shall provide all parties to an application at least 30 days written notice of the Board Hearing date. During the hearing, the Board will consider all of the evidence presented, deliberate on the issues, and vote on whether to approve the reclamation permit application. Subsequently, the Board's written decision, in the form of a Board Order, will be sent to all parties that participated in the hearing. Any decision by the Board is considered final agency action for purposes of appeal. 5 Helpful Weblinks: Colorado Division of Reclamation, Mining and Safety homepage: https://drms.colorado.gov The Acts and Rules for Construction Materials and Hard Rock/Metal Mining operations are available at: https://drms.colorado.gov/rules-and-regulations. A list of permitting actions currently under review is available at: https://drms.colorado.gov/information/permitting-actions-currently-under-review. Comments or objections on an application under review can be submitted at: https://dnrlaserfiche.state.co.us/Forms/DRMS Comment. All (non -confidential) permit files are available for public review through our online imaged document system (called Laserfiche) at: https://dnrweblink.state.co.us/drms/search.aspx. A Laserfiche User Guide is available at: https://drive.google.com/file/d/118OUdf Mpjo3kxlHkP5hMH-w7MeStxX7/view. This guidance document as well as the attached Proxy Authorization and Party Status Withdrawal forms are available on our website (under the section labeled "Information") at: https://drms.colorado.gov/forms/minerals-program-forms. 6 AUTHORIZATION TO APPEAR ON BEHALF OF A PARTY (Please Type or Print the Requested Information) SIGNATURES MUST BE IN BLUE INK I (person's name) (title, if applicable) of (name of company, association, organization, etc., if applicable) hereby delegate to (person or entity's name) the right to appear on behalf of (person, company, association, organization, etc.) at the Pre -hearing Conference. SIGNED AND DATED THIS DAY OF If corporate attest (seal) Authorized Signature (must be signed in blue ink) Title: State of County of _ The forgoing instrument was acknowledged before me this day of by as of Notary Public My commission expires: SIGNATURES MUST BE IN BLUE INK STATE OF COLORADO MINED LAND RECLAMATION BOARD PARTY STATUS WITHDRAWAL FORM In the matter of File No. M- - , Permit or Amendment Application. Name of Operator/Applicant: Site Name: I hereby withdraw as a party to this matter. I hereby withdraw as a party to this matter and, if the Board holds a hearing, I wish to address the Board at the formal hearing, if held, as a non-party. (Please note that if all objecting parties withdraw prior to the date set for the Board's consideration of the application, the application may be approved by the Office without the Board holding a hearing. In that event, there will be no opportunity to address the Board on any issues related to the application. Also, the Board is not obligated to consider any issues raised by a person or an entity that has withdrawn as a party.) Regardless of a party status, the Division thoughtfully considers each issue submitted in writing to the Division and provides a response to those issues within its jurisdiction in the Division's "Rationale for Recommendation." The Rationale is available to any person by contacting the Division. For persons who do not wish to become a party or who withdraw as a party in this matter, please contact the Division for information on application status. Printed Name Home Phone # Address Work Phone # City, State Zip Code FAX # E -Mail Address Date Signature rp.rr eraticl.lfi.,.rs rrsn id 1 July 30, 2024 el 1 '11,—,V111.3 L1i1S' ilMIL, • Mr. Brock Bowles Environmental Protection Specialist State of Colorado Division of Reclamation, Mining, and Safety Physical Address: 1313 Sherman Street, Room 215 Denver, CO 80203 Mailing Address: Division of Reclamation, Mining and Safety, Room 215 1001 East 62nd Avenue Denver, CO 80216 RE: Sweet Valley Pit (Permit No. M-2024-015) Adequacy Review #1 Dear Mr. Bowles, Central Colorado Water Conservancy District (CCWCD) has received the Division's Adequacy Review #1 letter dated June 1, 2024. Below are the comments and the corresponding responses that we have provided to address the comments. Comments 6.4.4 Exhibit D - Mining Plan 1. Exhibits C2 and C3 show screening berms at various locations around the North and South Cells. What are the purposes of the berms, what are they constructed of, will they have erosion control structures in the areas where they are adjacent to the permit boundary, are they permanent, are they required by another agency, and will they have vegetation? Response: The purposes of the berms are to screen the proposed mining operation from adjacent properties. These were discussed with several of the neighbors at the first neighborhood meeting that was held in February 2024. The berms will be constructed of overburden and clay materials and topsoil will be added so the berms can be seeded with native grasses for the duration of the mining. The berms will be installed after slurry wall construction and prior to mining operations starting. There will be erosion control measures to control sediment transport per our approved grading plan permit with Weld County. 6.4.5 Exhibit E - Reclamation Plan 2. What is the intended use of the 12" inches of topsoil that was salvaged from the North and South Cells? These two cells combined are 72.3 aces which equates to an excess of 116,160 cy3 of topsoil. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 RE: Sweet Valley Pit, (Permit No. M-2024-015) Adequacy Review #1 July 30, 2024 -2- Response: The topsoil that is needed for the reclamation will be kept on site and used as reclamation occurs during the mining operations. The topsoil that is excess will be sold as a product during the mining operations. 6.4.7 Exhibit G — Water Information 3. The results also show that the water tested was not filtered as required by Reg. 41. Benchmark concentrations for metals listed in Reg. 41 are for dissolved metal concentrations, not total metals. Therefore, the results provided from November 17, 2023, are not suitable for comparison to the standards in Reg. 41 and will not contribute to the necessary 5 consecutive quarters of required testing to establish baseline. Response: The SGS samples were filtered for the dissolved metals testing. See updated information from SGS regarding the samples. 4. The Division suggests that to better establish baseline the Operator should sample all four monitoring wells for a minimum of 5 consecutive quarters and have the samples filtered as required before testing for the specified analytes from Tables 1-4 of Reg. 41. Response: The operator's plan has been updated and all monitor wells will be included for establishing the baseline information. When obtaining a monitor well sample typically at least 3 well volumes will be taken from the well to make sure a true groundwater sample is obtained. During the purging time, measuring pH, temperature, EC will occur at different times until stabilization occurs. Then the sample will be collected and placed in the lab provided bottle(s) for unfiltered samples. The sample will then be filtered prior to placement into the lab bottle(s) for SGS to run the testing on for the dissolved metals from Table 41. Sampling and collection of the groundwater from the monitor wells will reference the USGS National Field Manual for Collecting Water Quality Data Chapter A.4 Collection of Water Quality Samples and EPA Region 9 Groundwater Sampling Guide. The plan has been updated to include the process discussed in the response to Comment 5 below for collection of the samples. 5. The Operator should be required to collect water levels of the monitoring wells monthly and collect analytical data quarterly before and after establishing the baseline. This plan should be maintained until baseline data is provided and approved by DRMS and any proposed modifications to this sampling plan are approved by DRMS. Response: CCWCD commits to collect water levels in the monitoring wells monthly and collecting analytical data quarterly for the water quality baseline information. This plan will be maintained to establish baseline data and submit to the DRMS for approval as well as during the operation of the mine. 6. The Operator should provide graphs to accompany a data table showing the depth of water versus time. Response: CCWCD commits to providing graphs to accompany the data table showing the depth of groundwater versus time. VI 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 RE: Sweet Valley Pit, (Permit No. M-2024-015) Adequacy Review #1 July 30, 2024 -3- 7. The Operator should clarify if the samples are filtered in the lab by SGS Laboratories. Response: The updated information is included from SGS clarifying the samples thus far were filtered for the dissolved metals testing. The operator's plan has been updated where the samples will be filtered in the field prior to delivery of the samples to SGS laboratories. 8. The Division suggests that the Operator uses the southeast monitoring well as a background water quality sampling location and the remaining three monitoring wells as points of compliance (POC) for the long-term groundwater monitoring plan. The Division is open to reducing the number of POC wells for the operation over time if a subsequent request, submitted as a Technical Revision, and supported by the provided data is approved by the Division. Response: CCWCD commits to using the southeast monitoring well as a background water quality sampling location after the baseline data is established. CCWCD commits to using the remaining three monitoring wells as points of compliance for the long-term monitoring plan. 6.4.12 Exhibit L — Reclamation Costs 9. A cost estimate was not completed at this time because a significant amount of information needed to complete an estimate was requested in this adequacy review. A cost estimate will be completed when the information is received, and J&T Consulting will have an opportunity to review/comment on it. Response: Acknowledged. 6.4.19 Exhibit S — Permanent Man-made Structures 10. Please submit structure agreements with all landowners that have a structure within 200 feet of the permit boundary. Response: Structure agreements were sent out on July 29, 2024 and July 30, 2024 by e-mail and certified mail. The a -mails and certified mail receipts are attached as well as the letters that were sent out. CCWCD appreciates your consideration of this adequacy review response. VI 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 RE: Sweet Valley Pit, (Permit No. M-2024-015) Adequacy Review #1 July 30, 2024 -4- Please feel free to contact me with any questions or comments. Sincerely, r J.C. York, P.E. J&T Consulting, Inc. Attachments: 1. Updated Exhibit G 2. Updated Groundwater Monitor Well Readings 3. Updated Groundwater Quality Testing Readings 4. Executed Structure Agreements 5. Emails with Structure Agreements and Certified Mail Receipts with Structure Agreements ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 EXHIBIT G Water Information Introduction The Sweet Valley Pit mining site is I located in the Northeast % of Section 30, Township 4 North, Range 66 West of the 6t" Principal Meridian, in Weld County, Colorado. The proposed mining site is located adjacent to WCR 42 on the north side, WCR 25.5 on the west side, and CO Hwy 60 on the east side. WCR 40 is approximately 2,630 feet to the south of the permit boundary. Access to the site will be located on the south side of the permit boundary and approximately 1,311 feet west of CO Hwy 60 and 1,285 feet east of WCR 25.5. The dominant land use surrounding the property is agricultural. The operation will consist of sand and gravel production and will not impact the South Platte River in the form of depletions due to a slurry wall that will be installed prior to mining below exposed groundwater. Mining of the Sweet Valley Pit site will last for approximately 11 years and 8 months. Once reclamation is complete, the water storage reservoirs will be called the Sweet Valley Reservoir Complex with a total of two reservoirs. The north reservoir will have a water surface area of 32.42 acres and the south reservoir will have a water surface area of 40.10 acres. The depth to groundwater ranges from 13 to 18 feet seasonally within the permit boundary (measured in Existing MW, and MW -1 through MW -3, See the attached piezometer measurements table). The site will be mined down to a depth of 49 to 68 feet thus exposing groundwater to the atmosphere. This exposed groundwater, along with the operational losses associated with the extraction of sand and gravel deposits, will impact the South Platte alluvial aquifer. These impacts will cause river depletions that must be augmented. Groundwater will be exposed during the mining once the mining depths reach an elevation of approximately 4749 feet on the south side of the property and an elevation of approximately 4739 feet on the north side. To enable dry mining at the Sweet Valley Pit mining site, there will be dewatering trenches around the bottom of the mining slope. These dewatering trenches will change in length throughout mining. The maximum length will occur when the north or south cell is completely mined, concurrently with reclamation since the mining slope is the same as the reclaimed slope. The maximum size of dewatering trench will be 0.75 acres of exposed surface area. The water will flow from the dewatering ditch to a small pond at the end of the dewatering ditch from which the water will be pumped where it will either be used for processing and dust control water or where it will be discharged to eventually reach the South Platte River. As mining progresses, the dewatering trenches will shift to account for additional groundwater being exposed. The gravel pit will have slurry wall liners for Phase 1 and Phase 2 constructed prior to exposing groundwater. Water Requirements Water use at the Sweet Valley Pit mining site will include evaporation from exposed groundwater, dust control of haul roads and stockpiles, water for the wash plant (i.e. wash screen for concrete rock and sand) and water retained in material removed from the site. Evaporative Loss Evaporative losses are dependent on the exposed water surface area, which may shift throughout the mining operation, but will not exceed the maximum. Exposed surface area at the Sweet Valley Pit mining site will include groundwater exposed in the dewatering trenches. The maximum exposed surface area at the site during mining is estimated at 0.75 acres. CCWCD plans to keep the site dewatered throughout the life of the mine. Evaporation data was taken from NOAA Technical Report NWS 33, Evaporation Atlas for the 48 Contiguous United States. The annual gross evaporation was determined to be 45 inches for this location. Monthly evaporation percentages are established by guidelines set by the State Engineer's Office. To determine precipitation, data from the National Weather Service for Greeley, CO (UNC) (1967-2023) was used. The long-term average precipitation at the Sweet Valley Pit mining site is estimated at 14.26 inches. Effective precipitation is calculated as 70`)/0 of the total precipitation. The net evaporation is the difference between gross annual evaporation and effective precipitation. The resulting net evaporation is 35.02 inches or 2.92 feet. The maximum annual evaporative loss from the 0.75 acres is 2.19 ac -ft. Operational Loss The average annual production from the Sweet Valley Pit mining site is estimated at 650,000 tons. Using 4% moisture content (2% for moisture in the product and 2`)/0 for water used to wash), the total associated consumptive use for water retained in the material mined and water used for washing the total associated consumptive use for water retained in the material mined is 19.1 ac -ft. Dust control use is 10,000 gal/day, 6 days/week, 4 weeks/month for 10 months of the year. This equates to 7.4 ac -ft. Maximum annual operational loss is estimated to be 26.5 ac -ft. Consumptive Use The maximum annual consumptive use (operational loss + evaporation loss) at this site during the mining operation is estimated to be 28.69 ac -ft. Replacement Water The replacement of consumptive uses at the site will be accounted for in a substitute water supply plan (SWSP) approved by the State Engineer. The SWSP will be obtained prior to any mining activities occurring that expose groundwater. Surrounding Water Rights The attached Figure A-1 Well Permits in the Sweet Valley Pit — Groundwater Evaluation by McGrane Engineering, LLC shows the permitted wells within 600 feet of the mining limits and permitted wells within the boundaries of the groundwater model/evaluation. The well information and locations were obtained from the Division of Water Resources online mapping well permit locator. This well and water rights information was cross checked with the State's CDSS. Between the sources, all permitted and decreed wells are included. Table G-1 below is a corresponding list of wells as numbered in the Sweet Valley Pit — Groundwater Evaluation by McGrane Engineering, LLC that is attached that are within 600 feet of the mining limits and that were within the 1 to 3.5 feet mounding area on the north and south side of the pit. Table G-1 - Permitted and Decreed Wells Within 600 Feet of Mining Limits Area of 1- 3.5 feet mounding and shadowing not owned by CCWCD Map ID Permit No Structure ID Well Name Owner Address City State Zip Code 1 187426-A Domestic Well Gerald J. and Teresa Moran 19801 CR 25.5 Platteville CO 80651 2 54-WCB Domestic Well Castor Hansen Platteville CO 80651 3 58-WCB Domestic Well Krosh & Hansen Platteville CO 80651 4 19924-U WDID 0205532 Breckon Well 4 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 5 19924-W WDID 0205534 Breckon Well 6 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 6 19924 -T -R WDID 0205531 Breckon Well 3 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 7 19924 -V -R WDID 0205533 Breckon Well 5 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 8 19924 -R -R WDID 0206021 Eaton Cattle Well 7 H&S Land & Cattle, LLC (formerly Eaton Cattle) P.O. Box 366 Gilcrest CO 80623 9 11113-R WDID 0206462 Gutfelder Well 11113 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 10 11114-R WDID 0206463 Gutfelder Well 11114 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 11 7165-R WDID 0205355 Benson Well 2 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 12 23014 Domestic Well Howard Breckon 538 Garfield Denver CO 80202 United Water WDID Koehn & Sanitation 3855 Lewiston 13 14028-R 0206862 Well #3 District Street #140 Aurora CO 80011 At the time of SWSP application/approval, a new gravel pit well permit will be applied for/obtained to include the evaporative and operational losses from the property. If the proposed use of groundwater at the Sweet Valley Pit mining site results in material injury to surrounding wells, CCWCD will ensure that all necessary measures are taken to address the issues. Water Quality An NPDES permit will be obtained from the Water Quality Control Division at the Colorado Department of Public Health & Environment for the Sweet Valley Pit mining site prior to discharging any groundwater that is dewatered from the site. This permit will be kept current and amended as necessary to ensure that any water discharged from the site will meet the permitted water quality standards. Impacts to Groundwater/Hydrologic Balance CCWCD will monitor the groundwater levels surrounding the site and provide groundwater mitigation via a groundwater drain or dewatering wells as described in the Groundwater Evaluation. The mitigation measures are provided with the Groundwater Evaluation. Design plans will be provided to the DRMS for the mitigation measures. CCWCD will discharge dewatering flows into existing adjacent irrigation laterals where possible to limit the disturbance to the surrounding land or discharge the dewatering flows via CCWCD's proposed pipeline that discharges directly to the South Platte River. A slurry wall liner is proposed around the Phase 1 and Phase 2 cells. To summarize the mitigation process, as the mining/dewatering occurs, CCWCD will monitor the groundwater levels adjacent to mine as the mining progresses. If groundwater levels drop to a level that prevents an adjacent well from performing acceptably, according to that well's owner, CCWCD will either implement a groundwater recharge ditch/pond near the well in order to raise the groundwater level in the vicinity of the well and hence return it's operation to acceptable standards, or will negotiate an agreement with that well owner to replace the well or provide replacement water via other means until the mining and reclamation activities are concluded but it is not anticipated that any groundwater levels will drop since the slurry wall will be installed prior to exposing groundwater and that mitigation measures to keep groundwater from mounding on the south side of the Phase 2 slurry wall will be in place such that baseline groundwater levels will be maintained to within plus or minus 2 feet. The north side of the Phase 1 slurry wall will be in a shadow area but all of the impacted wells are within the foot print of the approved permit boundaries of the Monarch Mine and the Section 20 Mine. Groundwater wells that are not owned by CCWCD are potentially located within 600 feet of the mining limits. The exact physical location of these wells will be determined during the SWSP and well permit application processes. If wells are found to be within 600 feet of the mining limits, CCWCD will either obtain a well waiver from the owner of the well, or provide an agreement with the well owner that CCWCD will mitigate and material damage to the well that is directly attributable to the mining and reclamation of the site. All other wells within 600 feet of the mining limits are either owned by CCWCD or are monitoring wells therefore groundwater impacts to these wells do not need to be addressed. See the attached Piezometer Location Map, and Piezometer Data Summary, which show the locations of monitoring wells around the perimeter of the site that CCWCD has either installed or has access to, and the groundwater level data that has been collected for each well. The groundwater monitoring data will be provided for what has been done to date with this permit application and then submitted in the annual report for the pit to the DRMS after approval of the permit application. Groundwater Quality Monitoring Plan The majority of the mining operations at this site will be within the slurry wall lined area. The areas outside of the slurry wall will be limited to the scale house and haul roads for trucks coming into and out of the pit, and stockpiles, which are not likely to affect groundwater quality. To establish pre -mining groundwater quality at the site CCWCD will have four monitor wells sampled quarterly. The samples will be taken by a qualified consultant and then tested by SGS Laboratories for the analytes listed in Tables 1-4 of the "Basic Standards for Groundwater." The quarterly sampling will continue until 5 quarters of data has been established. Once the baseline has been established, we would recommend annual sampling to monitor the groundwater quality and a technical revision will be submitted to request the change. CCWCD commits to establishing points of compliance following five quarters of baseline monitoring. Monitor Well 3 located on the southeast side of the permit boundary will be used as a background water quality sampling location and the remaining three monitoring wells as points of compliance (POC), the POCs will be the Existing Monitor Well and Monitor Wells 1, and 2. When obtaining a monitor well sample typically at least 3 well volumes will be taken from the well to make sure a true groundwater sample is obtained. During the purging time, measuring pH, temperature, EC will occur at different times until stabilization occurs. Then the sample will be collected and placed in the lab provided bottle(s) for unfiltered samples. The sample will then be filtered prior to placement into the lab bottle(s) for SGS to run the testing on for the dissolved metals from Table 41. Sampling and collection of the groundwater from the monitor wells will reference the USGS National Field Manual for Collecting Water Quality Data Chapter A.4 Collection of Water Quality Samples and EPA Region 9 Groundwater Sampling Guide. The groundwater quality sampling data will be provided for what has been done to date with this permit application/adequacy review and then submitted in the quarterly report for the pit to the DRMS after approval of the permit application. CCWCD will notify the DRMS within 7 days of receiving a lab report that indicates any of the standards set forth in Tables 1-4 have been exceeded. If a lab report shows an exceedance, a new sample will be taken to verify exceedance or discount potential lab contamination. The groundwater quality testing data will be provided for what has been done to date with this permit application/adequacy review and then submitted at the following frequency to the DRMS: First quarter report due by May 1st of every year. Second quarter report due by August 1st of every year. Third quarter report due by November 1st of every year. Fourth quarter report due by February 1st of the following year. The report will include a site map with well locations, tabulated data for all parameters, graphs/plots of selected parameters, a narrative analysis of the data with any trends and/or anomalies identified, and graphs and tables of measured groundwater levels for all locations. The field sheets will be included in an appendix that demonstrates monitoring wells were purged and sampled according to the approved plan. Sweet Valley Pit - Monitor Well Readings Well Designation Existing Monitor Well JT MW -1 JT MW -2 JT MW -3 Description Southwest Corner Northwest Corner Northeast Corner Southeast Corner Top of Well Elevation (ft) 4765.11 4754.77 4757.78 4763.64 Ground Elevation (ft) 4762.38 4752.57 4755.56 4761.50 Date Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) October 26, 2023 16.17 13.44 4748.94 November 17, 2023 17.25 14.52 4747.86 17.00 14.80 4737.77 17.96 15.74 4739.82 16.00 13.86 4747.64 December 22, 2023 18.63 15.90 4746.49 18.10 15.90 4736.67 18.83 16.61 4738.95 17.25 15.11 4746.39 January 20, 2024 19.54 16.81 4745.57 18.92 16.72 4735.85 20.00 17.78 4737.78 18.25 16.11 4745.39 February 25, 2024 20.31 17.58 4744.80 19.58 17.38 4735.19 19.92 17.70 4737.86 18.88 16.73 4744.77 March 30, 2024 20.60 17.87 4744.51 19.88 17.67 4734.90 20.77 18.55 4737.01 19.17 17.03 4744.47 April 30, 2024 20.00 17.27 4745.11 19.29 17.09 4735.48 19.56 17.34 4738.22 18.81 16.67 4744.83 May 31, 2024 19.13 16.40 4745.99 18.90 16.70 4735.87 18.92 16.70 4738.86 18.25 16.11 4745.39 July 1, 2024 18.10 15.37 4747.01 17.10 14.90 4737.67 17.50 15.28 4740.28 16.20 14.06 4747.44 Minimum 16.17 13.44 4744.51 17.00 14.80 4734.90 17.50 15.28 4737.01 16.00 13.86 4744.47 Maximum 20.60 17.87 4748.94 19.88 17.67 4737.77 20.77 18.55 4740.28 19.17 17.03 4747.64 Average 18.86 16.13 4746.25 18.60 16.40 4736.17 19.18 16.96 4738.60 17.85 15.71 4745.79 Western Ditch Running Western Ditch Running Western Ditch Running Western Ditch Running Western Ditch Running SGS North America Inc. Report of Analysis Page 1of1 Client Sample ID: SWEET VALLEY PIT (MW -1) Lab Sample ID: DA62542-5 Matrix: AQ - Ground Water Project: Material Sites WQ Testing Date Sampled: 03/01/24 Date Received: 03/01/24 Percent Solids: n/a General Chemistry Analyte 9056A Fluoride Chloride Nitrogen, Nitrite a Nitrogen, Nitrate Sulfate 9056A NO2 + NO3O Nitrogen, Nitrate + Nitrite b 3.4 Solids, Total Dissolved Result RL Units DF 1.2 0.20 mg/1 2 151 5.0 mg/1 10 < 0.040 0.040 mg/1 10 3.4 0.10 mg/1 10 188 5.0 mg/1 10 0.14 mg/1 1 709 10 mg/1 1 (a) Elevated detection limit due to matrix interference. (b) Calculated as: (Nitrogen, Nitrate) + (Nitrogen, Nitrite) Analyzed By Method 03/01/24 23:10 mB 03/01/24 23:24 mB 03/01/24 23:24 mB 03/01/24 23:24 mB 03/01/24 23:24 mB SW846 9056A SW846 9056A SW846 9056A SW846 9056A SW846 9056A 03/01/24 23:24 MB SW846 9056A 03/04/24 07:00 Jw sM 2540O-2011 RL = Reporting Limit 21 of 59 DA62542 SGS North America Inc. Report of Analysis Page 1of1 Client Sample ID: SWEET VALLEY PIT (MW -1) Lab Sample ID: DA62542-5F Matrix: AQ - Groundwater Filtered Project: Material Sites WQ Testing Date Sampled: 03/01/24 Date Received: 03/01/24 Percent Solids: n/a Dissolved Metals Analysis Analyte Result RL Units DF Prep Analyzed By Method Prep Method Aluminum < 100 100 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Antimony < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Arsenic < 25 25 ug/1 1 03/12/24 03/14/24 cDL sws466010C2 sws463010A4 Barium 62.0 10 ug/1 1 03/12/24 03/14/24 cDL sws466010C2 sws463010A4 Beryllium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Boron 209 50 ug/1 1 03/12/24 03/19/24 cDL SW846 6010O 3 SW846 3010A 4 Cadmium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Chromium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Cobalt < 5.0 5.0 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Copper < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Iron < 70 70 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Lead < 50 50 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Manganese < 5.0 5.0 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Mercury < 0.10 0.10 ug/1 1 03/13/24 03/13/24 cDL SW846 7470A 1 SW846 7470A 5 Molybdenum < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Nickel < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Selenium < 50 50 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Silver < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Thallium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Uranium < 50 50 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Vanadium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Zinc < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 (1) Instrument QC Batch: MA17745 (2) Instrument QC Batch: MA17751 (3) Instrument QC Batch: MA17763 (4) Prep QC Batch: MP39056 (5) Prep QC Batch: MP39057 RL = Reporting Limit 22 of 59 DA62542 SGS North America Inc. Report of Analysis Page 1of1 Client Sample ID: SWEET VALLEY PIT (MW -1) Lab Sample ID: DA62542-5FC Matrix: AQ - Groundwater Filtered Project: Material Sites WQ Testing Date Sampled: 03/01/24 Date Received: 03/01/24 Percent Solids: n/a Dissolved Metals Analysis Analyte Result RL Units DF Prep Analyzed By Method Prep Method Lithium a 22.4 10 ug/1 1 03/07/24 03/08/24 ALA SW846 6010C 1 SW846 3010A 2 (1) Instrument QC Batch: L:MA27325 (2) Prep QC Batch: L:MP27849 (a) Analysis performed at SGS Scott, LA. RL = Reporting Limit 23 of 59 DA62542 SGS North America Inc. Report of Analysis Page 1of1 Client Sample ID: SWEET VALLEY PIT (MW -3) Lab Sample ID: DA62542-6 Matrix: AQ - Ground Water Project: Material Sites WQ Testing Date Sampled: 03/01/24 Date Received: 03/01/24 Percent Solids: n/a General Chemistry Analyte 9056A Fluoride Chloride Nitrogen, Nitrite a Nitrogen, Nitrate Sulfate 9056A NO2 + NO3O Nitrogen, Nitrate + Nitrite b 4.0 Solids, Total Dissolved Result RL Units DF 0.86 0.20 mg/1 2 165 5.0 mg/1 10 < 0.040 0.040 mg/1 10 4.0 0.10 mg/1 10 193 5.0 mg/1 10 0.14 mg/1 1 723 10 mg/1 1 (a) Elevated detection limit due to matrix interference. (b) Calculated as: (Nitrogen, Nitrate) + (Nitrogen, Nitrite) Analyzed 03/01/24 23:38 03/01/24 23:52 03/01/24 23:52 03/01/24 23:52 03/01/24 23:52 By Method MB MB MB MB MB SW846 9056A SW846 9056A SW846 9056A SW846 9056A SW846 9056A 03/01/24 23:52 MB SW846 9056A 03/04/24 07:00 Jw sM 2540O-2011 RL = Reporting Limit 24 of 59 DA62542 SGS North America Inc. Report of Analysis Page 1of1 Client Sample ID: SWEET VALLEY PIT (MW -3) Lab Sample ID: DA62542-6F Matrix: AQ - Groundwater Filtered Project: Material Sites WQ Testing Date Sampled: 03/01/24 Date Received: 03/01/24 Percent Solids: n/a Dissolved Metals Analysis Analyte Result RL Units DF Prep Analyzed By Method Prep Method Aluminum < 100 100 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Antimony < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Arsenic < 25 25 ug/1 1 03/12/24 03/14/24 cDL sws466010C2 sws463010A4 Barium 51.3 10 ug/1 1 03/12/24 03/14/24 cDL sws466010C2 sws463010A4 Beryllium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Boron 191 50 ug/1 1 03/12/24 03/19/24 cDL SW846 6010O 3 SW846 3010A 4 Cadmium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Chromium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Cobalt < 5.0 5.0 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Copper < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Iron < 70 70 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Lead < 50 50 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Manganese < 5.0 5.0 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Mercury < 0.10 0.10 ug/1 1 03/13/24 03/13/24 cDL SW846 7470A 1 SW846 7470A 5 Molybdenum < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Nickel < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Selenium < 50 50 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Silver < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Thallium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Uranium < 50 50 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Vanadium < 10 10 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 Zinc < 30 30 ug/1 1 03/12/24 03/14/24 cDL SW846 6010O 2 SW846 3010A 4 (1) Instrument QC Batch: MA17745 (2) Instrument QC Batch: MA17751 (3) Instrument QC Batch: MA17763 (4) Prep QC Batch: MP39056 (5) Prep QC Batch: MP39057 RL = Reporting Limit 25 of 59 DA62542 SGS North America Inc. Report of Analysis Page 1of1 Client Sample ID: SWEET VALLEY PIT (MW -3) Lab Sample ID: DA62542-6FC Matrix: AQ - Groundwater Filtered Project: Material Sites WQ Testing Date Sampled: 03/01/24 Date Received: 03/01/24 Percent Solids: n/a Dissolved Metals Analysis Analyte Result RL Units DF Prep Analyzed By Method Prep Method Lithium a 15.1 10 ug/1 1 03/07/24 03/08/24 ALA SW846 6010C 1 SW846 3010A 2 (1) Instrument QC Batch: L:MA27325 (2) Prep QC Batch: L:MP27849 (a) Analysis performed at SGS Scott, LA. RL = Reporting Limit 26 of 59 DA62542 Wheat Ridge, CO Metals Analysis QC Data Summaries Includes the following where applicable: • Method Blank Summaries • Matrix Spike and Duplicate Summaries • Blank Spike and Lab Control Sample Summaries • Serial Dilution Summaries r r 1 rl Section 5 32 of 61 DA62542 BLANK RESULTS SUMMARY Part 2 - Method Blanks Login Number: DA62592 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/29 Methods: SW846 6010C Units: ug/1 MB Metal RL IDL MDL raw final Aluminum 100 46 15 1.4 <100 Antimony 30 14 6.8 -9.9 <30 Arsenic 25 22 9.6 3.1 <25 Barium 10 .3 1.3 -0.10 <10 Beryllium 10 1 1.3 0.0 <10 Boron SO 3.3 6.3 -3.9 <50 Cadmium 10 1.9 1.3 -0.10 <10 Calcium 900 6.6 SO Chromium 10 1.1 1.3 0.10 <10 Cobalt 5.0 2.7 .63 0.30 <5.0 Copper 10 4.6 1.3 -1.9 <10 Iron 70 8.9 12 0.30 <70 Lead SO 13 6.3 9.2 <50 Lithium 5.0 .6 1.3 Magnesium 200 50 25 Manganese 5.0 .5 .63 0.50 <5.0 Molybdenum 10 8.5 2.8 -0.10 <10 Nickel 30 6.2 3.8 0.40 <30 Phosphorus 100 91 16 Potassium 1000 84 130 Selenium SO 30 22 20.5 <50 Silicon 200 41 150 Silver 30 .6 3.8 -0.10 <30 Sodium 900 13 SO Strontium 5.0 .1 .63 Thallium 10 17 9.3 2.1 <10 Tin 60 41 S1 Titanium 10 .5 1.3 Uranium SO 3.9 8.5 -5.9 <50 Vanadium 10 .9 1.3 -0.10 <10 Zinc 30 9 3.8 9.9 <30 Associated samples MP39056: DA62592-1F, DA62592-2F, DA62592-3F, DA62592-4F, DA62592-SF, DA62592-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits Page 1 33 of 61 DA62542 BLANK RESULTS SUMMARY Part 2 - Method Blanks Login Number: DA62592 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/29 Methods: SW896 6010C Units: ug/1 MB Metal RL IDL MDL raw final (anr) Analyte not requested Page 2 34 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/24 Methods: SW846 6010C Units: ug/1 Metal DA61679-1F Original MS Spikelot ICPALL5 o Rec QC Limits Aluminum 0.00 1010 Antimony 0.0 98.1 100 Arsenic 0.0 211 200 Barium 0.0 414 400 Beryllium 0.0 105 100 Boron 0.0 409 400 Cadmium 0.0 102 100 Calcium Chromium 0.0 105 100 105.0 75-125 Cobalt 0.0 104 100 104.0 75-125 Copper 0.0 105 100 105.0 75-125 Iron 15.6 1040 1000 102.4 75-125 Lead 0.0 201 200 100.5 75-125 Lithium Magnesium Manganese 0.80 210 200 104.5 75-125 Molybdenum 0.0 102 100 102.0 75-125 Nickel 0.0 101 100 101.0 75-125 Phosphorus Potassium Selenium 0.0 215 200 107.5 75-125 Silicon Silver 0.0 41.6 40 104.0 75-125 Sodium am Strontium Thallium 0.0 199 200 99.5 75-125 Tin Titanium Uranium 0.0 209 200 104.5 75-125 Vanadium 0.0 104 100 104.0 75-125 Zinc 15.8 125 100 109.2 75-125 1000 101.0 98.1 105.5 103.5 105.0 102.5 102.0 75-125 75-125 75-125 75-125 75-125 75-125 75-125 Associated samples MP39056: DA62542-1F, DA62542-2F, DA62542-3F, DA62542-4F, DA62542-5F, DA62542-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits Page 1 35 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/24 Methods: SW846 6010C Units: ug/1 Metal DA61679-1F Original MS Spikelot ICPALL5 o Rec QC Limits (N) Matrix Spike Rec. outside of QC limits (anr) Analyte not requested 0 Page 2 36 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/24 Methods: SW846 6010C Units: ug/1 DA61679-1F Spikelot MSD QC Metal Original MSD ICPALL5 o Rec RPD Limit Aluminum 0.00 1020 1000 102.0 1.0 Antimony 0.0 106 100 106.0 7.7 20 Arsenic 0.0 218 200 109.0 3.3 20 Barium 0.0 415 400 103.8 0.2 20 Beryllium 0.0 106 100 106.0 0.9 20 Boron 0.0 413 400 103.5 1.0 20 Cadmium 0.0 104 100 104.0 1.9 20 Calcium Chromium 0.0 107 100 107.0 1.9 20 Cobalt 0.0 106 100 106.0 1.9 20 Copper 0.0 107 100 107.0 1.9 20 Iron 15.6 1060 1000 104.4 1.9 20 Lead 0.0 206 200 103.0 2.5 20 Lithium Magnesium Manganese 0.80 211 200 105.0 0.5 20 Molybdenum 0.0 107 100 107.0 4.8 20 Nickel 0.0 101 100 101.0 0.0 20 Phosphorus Potassium Selenium 0.0 218 200 109.0 1.4 20 Silicon Silver 0.0 41.8 40 104.5 0.5 20 Sodium am Strontium Thallium 0.0 195 200 97.5 2.0 20 Tin Titanium Uranium 0.0 218 200 109.0 4.2 20 Vanadium 0.0 106 100 106.0 1.9 20 Zinc 15.8 111 100 95.2 11.9 20 Associated samples MP39056: DA62542-1F, DA62542-2F, DA62542-3F, DA62542-4F, DA62542-5F, DA62542-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits 20 Page 3 37 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62592 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/29 Methods: SW896 6010C Units: ug/1 DA61679-1F Spikelot MSD QC Metal Original MSD ICPALL5 o Rec RPD Limit (N) Matrix Spike Rec. outside of QC limits (anr) Analyte not requested Page 9 38 of 61 DA62542 SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/24 Methods: SW846 6010C Units: ug/1 Metal BSP Spikelot QC Result ICPALL5 o Rec Limits Aluminum 995 1000 Antimony 102 100 Arsenic 220 200 Barium 415 400 Beryllium 106 100 Boron 407 400 Cadmium 104 100 Calcium 99.5 102.0 110.0 103.8 106.0 102.0 104.0 80-120 80-120 80-120 80-120 80-120 80-120 80-120 Chromium 105 100 105.0 80-120 Cobalt 106 100 106.0 80-120 Copper 106 100 106.0 80-120 Iron 1040 1000 104.0 80-120 Lead 209 200 104.5 80-120 Lithium Magnesium Manganese 213 200 106.5 80-120 Molybdenum 104 100 104.0 80-120 Nickel 101 100 101.0 80-120 Phosphorus Potassium Selenium 219 200 109.5 80-120 Silicon Silver 41.5 40 103.8 80-120 Sodium am Strontium Thallium 203 200 101.5 80-120 Tin Titanium Uranium 209 200 104.5 80-120 Vanadium 106 100 106.0 80-120 Zinc 109 100 109.0 80-120 Associated samples MP39056: DA62542-1F, DA62542-2F, DA62542-3F, DA62542-4F, DA62542-5F, DA62542-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits Page 1 39 of 61 DA62542 SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/24 Methods: SW846 6010C Units: ug/1 Metal BSP Spikelot QC Result ICPALL5 o Rec Limits (anr) Analyte not requested 0 Page 2 40 of 61 DA62542 SERIAL DILUTION RESULTS SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/24 Methods: SW846 6010C Units: ug/1 DA61679-1F QC Metal Original SDI 1:5 oDIF Limits Aluminum 0.00 0.00 NC 0-10 Antimony 0.00 0.00 NC 0-10 Arsenic 0.00 0.00 NC 0-10 Barium 0.00 0.00 NC 0-10 Beryllium 0.00 0.00 NC 0-10 Boron 0.00 0.00 NC 0-10 Cadmium 0.00 0.00 NC 0-10 Calcium Chromium 0.00 0.00 NC 0-10 Cobalt 0.00 0.00 NC 0-10 Copper 0.00 0.00 NC 0-10 Iron 15.6 0.00 23.7 (a) 0-10 Lead 0.00 0.00 NC 0-10 Lithium Magnesium Manganese 0.800 0.00 100.0(a) 0-10 Molybdenum 0.00 0.00 NC 0-10 Nickel 0.00 0.00 NC 0-10 Phosphorus Potassium Selenium 0.00 0.00 NC 0-10 Silicon Silver 0.00 0.00 NC 0-10 Sodium am Strontium Thallium 0.00 0.00 NC 0-10 Tin Titanium Uranium 0.00 0.00 NC 0-10 Vanadium 0.00 0.00 NC 0-10 Zinc 15.8 0.00 10.1 (a) 0-10 Associated samples MP39056: DA62542-1F, DA62542-2F, DA62542-3F, DA62542-4F, DA62542-5F, DA62542-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits Page 1 41 of 61 DA62542 SERIAL DILUTION RESULTS SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39056 Matrix Type: AQUEOUS Prep Date: 03/12/24 Methods: SW846 6010C Units: ug/1 DA61679-1F QC Metal Original SDI 1:5 oDIF Limits (anr) Analyte not requested (a) Percent difference acceptable due to low initial sample concentration (< 50 times IDI). Page 2 42 of 61 DA62542 BLANK RESULTS SUMMARY Part 2 - Method Blanks Login Number: DA62592 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39057 Matrix Type: AQUEOUS Prep Date: 03/13/29 Methods: SW846 7470A Units: ug/1 MB Metal RL IDL MDL raw final Mercury 0.10 .015 .05 0.0087 <0.10 Associated samples MP39057: DA62592-1F, DA62592-2F, DA62592-3F, DA62592-4F, DA62592-5F, DA62592-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (anr) Analyte not requested Page 1 43 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39057 Matrix Type: AQUEOUS Prep Date: 03/13/24 Methods: SW846 7470A Units: ug/1 DA62542-4F Spikelot QC Metal Original MS HGWSRI o Rec Limits Mercury 0.0 1.1 1 110.0 75-125 Associated samples MP39057: DA62542-1F, DA62542-2F, DA62542-3F, DA62542-4F, DA62542-5F, DA62542-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (N) Matrix Spike Rec. outside of QC limits (anr) Analyte not requested Page 1 44 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62592 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39057 Matrix Type: AQUEOUS Prep Date: 03/13/29 Methods: SW846 7470A Units: ug/1 DA62542-9F Spikelot MSD QC Metal Original MSD HGWSRI o Rec RPD Limit Mercury 0.0 1.1 1 110.0 0.0 20 Associated samples MP39057: DA62592-1F, DA62592-2F, DA62592-3F, DA62592-4F, DA62592-5F, DA62592-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (N) Matrix Spike Rec. outside of QC limits (anr) Analyte not requested Page 2 45 of 61 DA62542 SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing QC Batch ID: MP39057 Matrix Type: AQUEOUS Prep Date: 03/13/24 Methods: SW846 7470A Units: ug/1 BSP Spikelot QC Metal Result HGWSRI o Rec Limits Mercury 1.0 1 100.0 80-120 Associated samples MP39057: DA62542-1F, DA62542-2F, DA62542-3F, DA62542-4F, DA62542-5F, DA62542-6F Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (anr) Analyte not requested Page 1 46 of 61 DA62542 Wheat Ridge, CO General Chemistry QC Data Summaries Includes the following where applicable: • Method Blank and Blank Spike Summaries • Duplicate Summaries • Matrix Spike Summaries r r 1 rl Section 6 47 of 61 DA62542 METHOD BLANK AND SPIKE RESULTS SUMMARY GENERAL CHEMISTRY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing Analyte Batch ID MB Spike BSP BSP QC RL Result Units Amount Result oRecov Limits Bromide Chloride Fluoride Nitrogen, Nitrate Nitrogen, Nitrate Nitrogen, Nitrite Nitrogen, Nitrite Solids, Total Dissolved Sulfate Associated Samples: Batch GN62770: DA62542-1, Batch GP36124: DA62542-1, Batch GP36126: DA62542-1, (*) Outside of QC limits GP36124/GN62778 GP36124/GN62778 GP36124/GN62778 GP36124/GN62778 GP36126/GN62780 GP36124/GN62778 GP36126/GN62780 GN62770 GP36124/GN62778 0.050 0.50 0.10 0.010 0.010 0.0040 0.0040 10 0.50 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 DA62542-2, DA62542-3, DA62542-4, DA62542-5, DA62542-6 DA62542-2, DA62542-3, DA62542-4, DA62542-5, DA62542-6 DA62542-2, DA62542-3 0.5 5 1 0.1 0.1 0.05 0.05 250 5 0.474 4,71 0.951 0.0923 0.0985 0.0508 0.0525 241 4.75 94.8 94.2 95.1 92.3 98.5 101.6 105.0 96.4 95.0 90-1100 90-1100 90-1100 90-1100 90-1100 90-1100 90-1100 90-1100 90-1100 Page 1 O� 48 of 61 DA62542 DUPLICATE RESULTS SUMMARY GENERAL CHEMISTRY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing Analyte Batch ID QC Sample Units Original DUP QC Result Result RPD Limits Solids, Total Dissolved GN62770 DA62592-6 mg/1 723 Associated Samples: Batch GN62770: DA62592-1, DA62592-2, DA62592-3, DA62542-4, DA62542-5, DA62592-6 (*) Outside of QC limits 798 3.4 0-5.990 Page 1 O) 49 of 61 DA62542 MATRIX SPIKE RESULTS SUMMARY GENERAL CHEMISTRY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing Analyte Batch ID QC Original Spike MS QC Sample Units Result Amount Result oRec Limits Bromide Chloride Fluoride Nitrogen, Nitrogen, Nitrogen, Nitrogen, Sulfate Nitrate Nitrate Nitrite Nitrite GP36124/GN62778 GP36124/GN62778 GP36124/GN62778 GP36124/GN62778 GP36126/GN62780 GP36124/GN62778 GP36126/GN62780 GP36124/GN62778 DA62422-1 DA62422-1 DA62422-1 DA62422-1 DA62560-6 DA62422-1 DA62560-6 DA62422-1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 0.0 302 0.0 1.7 2.9 0.0 0.25 287 Associated Samples: Batch GP36129: DA62592-1, DA62592-2, DA62592-3, DA62542-4, DA62542-5, DA62592-6 Batch GP36126: DA62592-1, DA62592-2, DA62592-3 (*) Outside of QC limits (N) Matrix Spike Rec. outside of QC limits 12.5 125 25 2.5 2.5 1.25 1.25 125 12.0 916 29.5 3.9 9.8 1.0 1.9 905 96.0 91.2 98.0 88.0 96.0 80.0 92.0 99.9 80-1200 80-1200 80-1200 80-1200 80-1200 80-1200 80-1200 80-1200 Page 1 rn w 50 of 61 DA62542 MATRIX SPIKE DUPLICATE RESULTS SUMMARY GENERAL CHEMISTRY Login Number: DA62542 Account: JTCOCOW - J&T Consulting Project: Material Sites WQ Testing Analyte Batch ID QC Original Spike MSD QC Sample Units Result Amount Result RPD Limit Bromide Chloride Fluoride Nitrogen, Nitrogen, Nitrogen, Nitrogen, Sulfate Nitrate Nitrate Nitrite Nitrite GP36124/GN62778 GP36124/GN62778 GP36124/GN62778 GP36124/GN62778 GP36126/GN62780 GP36124/GN62778 GP36126/GN62780 GP36124/GN62778 DA62422-1 DA62422-1 DA62422-1 DA62422-1 DA62560-6 DA62422-1 DA62560-6 DA62422-1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 mg/1 0.0 302 0.0 1.7 2.9 0.0 0.25 287 Associated Samples: Batch GP36129: DA62592-1, DA62592-2, DA62592-3, DA62542-4, DA62542-5, DA62592-6 Batch GP36126: DA62592-1, DA62592-2, DA62592-3 (*) Outside of QC limits (N) Matrix Spike Rec. outside of QC limits 12.5 125 25 2.5 2.5 1.25 1.25 125 12.1 918 29.8 9.0 9.7 1.0 1.9 907 0.8 0.5 1.2 2.5 2.1 0.0 0.0 0.5 200 200 200 200 200 200 200 200 Page 1 51 of 61 DA62542 Wheat Ridge, CO Misc. Forms Custody Documents and Other Forms (SGS Scott, LA) Includes the following where applicable: • Chain of Custody r r 1 rl Section 7 52 of 61 DA62542 SGS CIIetH i R<HORinry 1,10 rrnaprin I SGS Ncrth America lnc. 4036 YnunyfI.•Id Whcal RI Be, CO 31903 303-425-6971 TT •• OGILVY RIVER FARM PIT (h1pV-1] --I—- - - 1 F,. OGILVY RIVER FARM PEr (AIWA) -1 31 C II BARNHAROT $AND AND GRAVEL P1jII BAR NHA Rp-r 5AN0 AMP GRAVEL PIY '_� SWEE I VALLE Y PIT IAEWiy 11 =1---- - �� - SWEET VALLEY PIT ONAI-31 ra„:a rn ID L ar I e , H.....1 - , urn J n�5n yMu... 1 ▪ e....,,.,r,,i •,rHr.-.r-r % ,nn-• uue 3 e 2024 _ CHAIN OF' CUSTODY SGS North America lnc. - Wheat Rldge 4916 Ye ungfi cld Slice[ Wheat Ridge. GO 80933 TEL' 303-425-E021 FM: 393-425-6054 www.sg4 erne/el re use Page 1 of 1 DA62542 Proicut Ir,lUrina[rOr, — - -- - — L vL5100 Ana ly4.3 sce iE ST CUBE sl,opi1 'T�Itri,ii Ile �• vY•1i•,:•';u 2,1 .-- �- - - - i I •• �. •I •I 1-r T --- �I �- ', I _ 41: 0O r. �•� . T 431 I I r • x f x I l , _i __i_ _L � i _. _ _ i__ f I I f l{ rl 1r{.___ — I_ j-1 ,ter., n --r a,,,, - - - - t o..,.,,r.,c..i F; I .r.. 11 L. L LOn rn„ner l C- rx amplo Cord., myal . dvr-umvntod polo• oawi lime aarepte6 change poavession including ceu: vi del.very 4� • —` L.; I t r —F t • I DA62542: Chain of Custody Page 1 of 3 SGS Scott, LA 53 of 61 DA62542 am/use/2]595 LLI CC CI CC W LL CO LA Q y o= oz C� O C 1 CC CO CC F- d COLL, a j If•C �;:� N'J.�ii In;h-ni,t 9S{' DA62542: Chain of Custody Page 2 of 3 D 54 of 61 DA62542 SGS Sample Receipt Summary Job Number: da62542 Client: SGS NORTH AMERICA Date / Time Received: 3/5/2024 9:15:00 AM Delivery Method: Cooler Temps (Raw Measured) °C: Cooler 1: (3.6); Cooler Temps (Corrected) °C: Cooler 1: (3.6); Cooler Security 1. Custody Seals Present: 2. Custody Seals Intact: Cooler Temperature 1. Temp criteria achieved: 2. Cooler temp verification: 3. Cooler media: 4. No. Coolers: Y or N 0 0 ❑ 3. COC Present: ❑ 4. Smpl Dates/Time OK Y or N Ice (direct contact) 1 Quality Control Preservatio 1. Trip Blank present / cooler: 2. Trip Blank listed on COC: 3. Samples preserved properly: 4. VOCs headspace free: Y or N N/A Project: MATERIALS SITE WQ TESTING FEDEX Airbill Ws: 646648977174 Y or N Sample Integrity - Documentation 1. Sample labels present on bottles: 2. Container labeling complete: 3. Sample container label / COC agree: Sample Integrity - Condition 1. Sample recvd within HT: 2. All containers accounted for: 3. Condition of sample: Sample Integrity - Instructions 1. Analysis requested is clear: 2. Bottles received for unspecified tests 3. Sufficient volume recvd for analysis: 4. Compositing instructions clear: 5. Filtering instructions clear: Y or N Y or N Intact Y or N N/A Test Strip Lot #s: pH 1-12: pH 12+: Other: (Specify) Comments NP metals (6-250ml bottles) expired upon receipt. Samples taken 3/1/2024 between 10:13-13:10 SM089-03 Rev. Date 12/7/17 DA62542: Chain of Custody Page 3 of 3 V 55 of 61 DA62542 Wheat Ridge, CO Metals Analysis QC Data Summaries (SGS Scott, LA) Includes the following where applicable: • Method Blank Summaries • Matrix Spike and Duplicate Summaries • Blank Spike and Lab Control Sample Summaries • Serial Dilution Summaries r r 1 rl Section 8 56 of 61 DA62542 BLANK RESULTS SUMMARY Part 2 - Method Blanks Login Number: DA62592 Account: ALMS - SGS Wheat Ridge, CO Project: JTCOCOW: Material Sites WQ Testing QC Batch ID: MP27849 Matrix Type: AQUEOUS Prep Date: 03/07/24 Methods: SW846 6010C Units: ug/1 MB Metal RL IDL MDL raw final Aluminum 100 13 25 Antimony 6.0 2 3.6 Arsenic 10 2.4 8.6 Barium 10 .36 1.7 Beryllium 4.0 .06 .9 Boron 100 .72 42 Cadmium 5.0 .14 .9 Calcium 100 3.8 32 Chromium 10 .39 1.2 Cobalt 10 .26 1.1 Copper 10 .77 2.8 Iron 100 2.9 18 Lead 10 1.4 3.7 Lithium 10 2.4 4.3 1.5 <10 Magnesium 100 22 40 Manganese 10 .11 .9 Molybdenum 10 .16 1.7 Nickel 10 .29 1.5 Potassium 500 50 120 Selenium 10 1.5 4.3 Silver 10 .57 3.7 Sodium 500 20 120 Strontium 10 .1 3 Thallium 10 1.5 4.6 Tin 10 .74 1.7 Titanium 10 .41 .8 Vanadium 10 .39 1.5 Zinc 20 .18 12 Associated samples MP27849: DA62592-1FC, DA62592-2FC, DA62542-3FC, DA62542-4FC, DA62592-5FC, DA62592-6FC Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (anr) Analyte not requested Page 1 57 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62542 Account: ALMS - SGS Wheat Ridge, CO Project: JTCOCOW: Material Sites WQ Testing QC Batch ID: MP27849 Matrix Type: AQUEOUS Prep Date: 03/07/24 Methods: SW846 6010C Units: ug/1 Metal LA98821-13 Original MS Spikelot ICPSPIKElo Rec QC Limits Aluminum Antimony am Arsenic am Barium am Beryllium Boron Cadmium am Calcium Chromium am Cobalt am Copper am Iron am Lead am Lithium 0.0 1740 2000 87.0 75-125 Magnesium Manganese am Molybdenum Nickel am Potassium Selenium am Silver am Sodium Strontium Thallium Tin am Titanium Vanadium Zinc am Associated samples MP27849: DA62542-1FC, DA62542-2FC, DA62542-3FC, DA62542-4FC, DA62542-5FC, DA62542-6FC Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (N) Matrix Spike Rec. outside of QC limits (anr) Analyte not requested Page 1 58 of 61 DA62542 MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY Login Number: DA62592 Account: ALMS - SGS Wheat Ridge, CO Project: JTCOCOW: Material Sites WQ Testing QC Batch ID: MP27899 Matrix Type: AQUEOUS Prep Date: 03/07/29 Methods: SW846 6010C Units: ug/1 LA98821-13 Spikelot MSD QC Metal Original MSD ICPSPIKElo Rec RPD Limit Aluminum Antimony am Arsenic am Barium am Beryllium Boron Cadmium am Calcium Chromium am Cobalt am Copper am Iron am Lead am Lithium 0.0 1790 2000 87.0 0.0 20 Magnesium Manganese am Molybdenum Nickel am Potassium Selenium am Silver am Sodium Strontium Thallium Tin am Titanium Vanadium Zinc am Associated samples MP27849: DA62592-1FC, DA62592-2FC, DA62542-3FC, DA62542-4FC, DA62592-5FC, DA62592-6FC Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (N) Matrix Spike Rec. outside of QC limits (anr) Analyte not requested Page 2 59 of 61 DA62542 SPIKE BLANK AND LAB CONTROL SAMPLE SUMMARY Login Number: DA62542 Account: ALMS - SGS Wheat Ridge, CO Project: JTCOCOW: Material Sites WQ Testing QC Batch ID: MP27849 Matrix Type: AQUEOUS Prep Date: 03/07/24 Methods: SW846 6010C Units: ug/1 Metal BSP Result Spikelot ICPSPIKElo Rec QC Limits Aluminum Antimony am Arsenic am Barium am Beryllium Boron Cadmium am Calcium Chromium am Cobalt am Copper am Iron am Lead am Lithium 915 1000 91.5 80-120 Magnesium Manganese am Molybdenum Nickel am Potassium Selenium am Silver am Sodium Strontium Thallium Tin am Titanium Vanadium Zinc am Associated samples MP27849: DA62542-1FC, DA62542-2FC, DA62542-3FC, DA62542-4FC, DA62542-5FC, DA62542-6FC Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (anr) Analyte not requested DD W Page 1 60 of 61 DA62542 SERIAL DILUTION RESULTS SUMMARY Login Number: DA62542 Account: ALMS - SGS Wheat Ridge, CO Project: JTCOCOW: Material Sites WQ Testing QC Batch ID: MP27849 Matrix Type: AQUEOUS Prep Date: 03/07/24 Methods: SW846 6010C Units: ug/1 LA98821-13 QC Metal Original SDI 1:5 oDIF Limits Aluminum Antimony am Arsenic am Barium am Beryllium Boron Cadmium am Calcium Chromium am Cobalt am Copper am Iron am Lead am Lithium 0.00 13.2 NC 0-10 Magnesium Manganese am Molybdenum Nickel am Potassium Selenium am Silver am Sodium Strontium Thallium Tin am Titanium Vanadium Zinc am Associated samples MP27849: DA62542-1FC, DA62542-2FC, DA62542-3FC, DA62542-4FC, DA62542-5FC, DA62542-6FC Results < IDL are shown as zero for calculation purposes (*) Outside of QC limits (anr) Analyte not requested Page 1 61 of 61 DA62542 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a training operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.1,2 and Rule 6.4.19 & Hard Rock/Metal Mining .Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board') has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. S' 34-32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. § 34-32-115(4)(d). This form is for the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to enforce the terms of the agreement or create any enforcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Gas line 2. 3. 4. 5. (Please list additional structures on a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that DCP Midstream (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit (operation Marne), File Number M- 2024 _ 015 This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant Centrai Colorado Water Conservancy District Date -1/H (2If STATE OF OtIC}` kiti` ) ` ) ss. COLTNTY OF Representative Name Title The foregoing was acknowledged before me this��i.t Randy Ray Randy Ray Executive Director day of ()bit, , 20 Z� , by as Executive Director of Cencr/al Colorado Water Conservancy District , Notary PUblic( My Commission Expires: ALISON DONOVAN FORFI R Notary Pubiic State of Colorado Notary lD # 20234022964 My Commission Expires 06-20-2027 Notary Public NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner �,�� o�.- � �� Name Title 414 • . Z e STATE OF ) ) ss. COUNTY OF 7/:: ) The foregoing was acknowledged before me this .30 day of // , 20 z.9, by as of ...Pr,e/dee..e... .4.47, e My Commission Expires: LORM ANN CARLSON Notary Public State of Colorado Notary ID # 20054008501 MyComrnission Expires 03-02-2025 JC York From: JC York Sent: Monday, July 29, 2024 2:32 PM To: Shepherd - CDOT, Robert (Mike) Cc: Randy Ray; William Mihelich; Chris Leone Subject: Sweet Valley Pit - Structure Agreement Attachments: Structure Agreement CDOT.pdf; JT-Exhibit C-Pre-Mining_Mining Plan 2024.03.28.pdf; JT-Slope Stability Case Location Map -112 Permit 2024.02.29.pdf Mike — I have attached a the structure agreement the Division of Reclamation, Mining, and Safety requires that we attempt to get with structure owners that are within 200 feet of the mining permit boundary. The structure agreement is with Central Colorado Water Conservancy District (CCWCD) for the Hwy 60 ROW and Roadway as well as the CDOT Facility south of CCWCD's property that are within 200 feet of the mine permit boundary. I have also included the maps showing the mining plan and the locations of the slope stability sections. Let me know if you have any questions and if you want to sign the agreement please send a scan of the signature page back to us. If not that is ok as well because we have performed a slope stability analysis that shows the mining slopes proposed are within the required factors of safety that the DRMS requires. I have attached maps showing the mining plan and also the location of the slope stability cases that were ran in the slope stability analysis. Let me know if you have any questions. Regards, J.C. J.C. York, P.E. J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office: (303) 857-6222 Mobile: (970) 222-9530 FAX: (303) 857-6224 1 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mini»g and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure; located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the: Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be darnay,ed by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owners) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.1? and Rule 6.4.19 ct≤ Hard Rock/Metal Alining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Luau! Reclamation Board ("Board') has determined that this .fart, if properly executed, represents an agreement that complies with Construction Alaterials Rule 6.3.12(a). Rule 6.4.19(a), and C.'.R.S. tie 34-32.5-115(=rf)(0 and with Hard Rock/Aletal Mining Rule 6.3,12(a), Rule 6.4.'0(0. and C.R,S4 34 -3L? -115(4)(d)'. This. form is jur the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary part4- to ally private civil lawsuit to enforce the terms ()law agreement or create any etOrcement obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: l Laved Roadway (Hwy 00) Road Right -of -Way (Hwy 00) 3, North Property Line of 12755 CR 40 4. (Please list additional struc'tur'es on a separate page) CERTIFICATION ICATION The, Applicant, Central Colorado Water Conservancy District (print applicant/company name), Y Rand Ray ,•, Execrative Director ,lift by Y (print name), a5 _{] representative's title), does hereby certify that CDOT (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet oldie proposed affected area described within Exhibit A, of the Reclamation Pcrruit Application for Sweet Valley Pit (operation name), rile Number M- 2624.015 This form has been approved by the Colorado Mined Laird Reclamation Board pursuant to its authority under- the Colorado Land Reclamation Act fir the Extraction oJ'Construction Materials and the Colorado Mimed Land Reclamation Act for Hard Rock, Metal, and ,Designated Miming Oper'atimrs. Any alteration or modifr.cation to this forum shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACfCNOWLEGED BY: Applicant Central Colorado Water Conservancy District 1 Date STATE Of COUNTY Or ) ) ss. Representative Naine Randy Ray Title Executive Director The foregoing was acknowledged before me this l l rt, day of _4.L . 20 !Li , by Randy Ray as Executive Director p f cantrni Colorado Water Conservancy District , Natalie' My Commission Expires: Cif' Al_ISON DONOVAN FORREA Notary Public State of Colorado Notary ID # 20234022964 My Commission Expires 06.20-2027 NOTARY FOR STRUcTuRE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF ) ss. ) Name Title The foregoing was acknowledged before me this day of , 20 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 JC York From: JC York Sent: Monday, July 29, 2024 10:10 AM To: Stan@cwcwd.com Cc: Randy Ray; William Mihelich; Chris Leone Subject: Sweet Valley Pit - Structure Agreement Attachments: Structure Agreement Central Weld Water.pdf; JT-Exhibit C-Pre-Mining_Mining Plan 2024.03.28.pdf; JT-Slope Stability Case Location Map -112 Permit 2024.02.29.pdf Stan — Per our phone conversation attached is the structure agreement the DRMS requires that we attempt to get with structure owners that are within 200 feet of the mining permit boundary. The structure agreement is with Central Colorado Water Conservancy District for the water lines that Central Weld County Water District owns that are within 200 feet of the mine permit boundary along CR 25.5, south of CR 42, and west of Hwy 60.1 have also included the maps showing the mining plan and the locations of the slope stability sections. Let me know if you have any questions and if you want to sign the agreement please send a scan of the signature page back to us. Regards, J.C. J.C. York, P.E. J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office: (303) 857-6222 Mobile: (970) 222-9530 FAX: (303) 857-6224 1 Structure Agreement r-eement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed thine site. The State of Colorado, Division of Reclamation, Minim and Safety ("Division") requires that where a raining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (.?00) feet of the affected bind. the /applicant shall either: a) Provide d notarized agreement between the Applicant and the Person(s) having, an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where SUCK an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occulting at t.hc mining operation; or c) Where such structure is a utility, the /applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rules 6.3,12 and Rule 6.4.19 & Ha.rd Rock/Metal Mining Rule 6.3.12 and Rule 6.4. 20) The Colorado Mined .Lctrtd Reclamation Board ("Board) has determined that tilts, brin, l� properly executed, represents. an agreement that complies with amstruction Materials. Rule 6,3, 120), Ride 6.4.19(a), and C'. R.5". § _34-32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.1'(a), Rule 6.4.20(a), and C.R.S. ti5 34-32-115(4)(d). This fort?t is. br the .sole purpose of ensuring compliance with they Rules and Regulations and shall not make the Board or D1VISiOn a necessary party to any private civil lawsuit to eqf nAce. the terms oldie agreement or create any enforcement obligations in the Board or the 1]i vi,slnri. The following structures are located on or within 200 feet of the proposed affected area: Water lines 2. 4. 5. (Please list additional structures on a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (prim applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Central Weld County Water District (structure owner) shall be compensated for any damage from the proposed training operation to the above listed structure(s) located on or Within 200 beet of the proposed affected area described within Exhibit A, of'the Reclamation Pc„nit Application fo, Sweet Valley Pit (operation name), File Number M- 2024.015 This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority carder- the Colorado Land Reclamation Act_ for the Extraction of Construction Materials and the Colorado Mimed Land Reclamation Act, for Hard Rock. Metal, and Designated Mining Operations. Any alteration or modification to this firm shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED RY. ApplicantCentral Colorado Water COnSerVancy district representative Name Randy Ray -.y'L _ Date COUNTY OF l.,l., r'l i\ ) ss. Title Executive Director The foregoing was acknowledged before ale this a day of ��,{ � t'j , 20 ' i , by Randy Ray as Executive Director of Contra Colorado Water Conservancy District Notary` .utijic My Commission Expires.. i 1f ALISON DONOVAN FORRER Notary Public State of Cotorado Notary ID # 20234022904 My Commission Expires 06-20-2027 NOTARY FOR STRUCTURE OWNER AC KNOWLEGED BY: Structure Owner Date STATE OF COUNTY OH ss, Name Title The foregoing was acknowledged before me this as Notary Public day of _ of , 20 , by My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 JC York From: JC York Sent: Monday, July 29, 2024 3:09 PM To: dan@townofgilcrest.org Cc: Randy Ray; William Mihelich; Chris Leone Subject: Sweet Valley Pit - Structure Agreement Attachments: Structure Agreement Gilcrest.pdf; JT-Exhibit C-Pre-Mining_Mining Plan 2024.03.28.pdf; JT-Slope Stability Case Location Map -112 Permit 2024.02.29.pdf Dan — Attached is the structure agreement the Division of Reclamation, Mining, and Safety (DRMS) requires that we attempt to get with structure owners that are within 200 feet of the mining permit boundary. The structure agreement is with Central Colorado Water Conservancy District (CCWCD) for the sewer line that the Town of Gilcrest owns that are within 200 feet of the mine permit boundary. The sewer line is in the CR 42 ROW. I have also included the maps showing the mining plan and the locations of the slope stability sections. Let me know if you have any questions and if you want to sign the agreement please send a scan of the signature page back to us. If not that is ok as well because we have performed a slope stability analysis that shows the mining slopes proposed are within the required factors of safety that the DRMS requires. Let me know if you have any questions. Regards, J.C. J.C. York, P.E. J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office: (303) 857-6222 Mobile: (970) 222-9530 FAX: (303) 857-6224 1 Structure Agreement 'This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a minim operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where Such an agreement cannot be reached, the Applicant shall provide all appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the ruining and reclamation activities, as proposed„ will have "no negative effect- on their utility, ( Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Alining Rule 6.3.14 and Rule 6.4. 0) The Colorado Alined Land Reclamation Board. ("Board') has determined that this Orin, if properly executed., represents an agreement that complies with Construction Materials' Rule 6.3.1?(a), Rule 6.4.19(a.), and C.R.S. tis' 34-3 .5-115(4)02) and with Hard Rock Metal Mining Rule 63.12(a), Rule 6.4.200), and C R,S. ,tip 34 -3? -115(4)(d). This form is fur the .sales purpose ()lemming compliance with the Rides and Regulations and shall not make the Board or DiVi5lon a necessary party to any primate civil lawsuit to entbrce the terms cry the agreement ent or create any enArL'L'r1 ent obligations in the Board Or the � The following structures are looted on or within 200 Net of the proposed affected area: t unitary Sewer line 3. 4. s. (Please list additional structures on a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Town of Gilcrest (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described -within Exhibit A, of the Reclamation Permit. Application for Sweet Valley Pit (operation name), File Number M- 2024.O15 '"Iris form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority ander the Colorado Land Reclamation /Ja for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Miming Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR .PERMIT APPLICANT ACKNOWL✓EGED BY: Applicant Central Colorado Water Conservancy District Representative Name Randy Rey Date STATE OF ()ti','(1(L' ) ) ss. COUNTY OF Title Executive Director r The foregoing was acknowledged before me this 11'.day of JI,4.t� . , 201'i , by Randy Ray as Executive Director of Central Colorado Water Conservancy District - Notary Public Nly Commission (expires: Cllr ALISON DONOVAN FORRER Notary Public State of Colorado Notary ID # 20234022964 My Commission Expires 06-20-2027 NOTARY FOR STRUCTURE OWN.ER ACKNOWLE(.3ED BY: Structure. Owner Date STATE OF ) ) ss. COUNTY OF ) Name Title The foregoing was acknowledged before me this day of 20�, by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 JC York From: JC York Sent: Monday, July 29, 2024 9:33 AM To: Schultz, Ted [PDC Energy - Contractor] Cc: Randy Ray; William Mihelich; Chris Leone Subject: Sweet Valley Pit - Structure Agreement Attachments: Structure Agreement Chevron.pdf; JT-Exhibit C-Pre-Mining_Mining Plan 2024.03.28.pdf; JT-Slope Stability Case Location Map -112 Permit 2024.02.29.pdf Ted — We are in the permitting process with the DRMS and wanted to send over a structure agreement with Central Colorado Water Conservancy District for the oil/gas lines and tank batteries that PDC/Chevron owns that are within 200 feet of the mine permit boundary along CR 25.5, south of CR 42, and west of Hwy 60.1 have also included the maps showing the mining plan and the locations of the slope stability sections. Let me know if you have any questions and if you want to sign the agreement please send a scan of the signature page back to us. Regards, J.C. J.C. York, P.E. J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office: (303) 857-6222 Mobile: (970) 222-9530 FAX: (303) 857-6224 1 Structure Agreement This letter has been provided to you as the owner of structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent elan -made structure located within two hundred (.200) feet of the affected lint{, the.Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having all interest in the structure, that the Applicant IS t0 provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; of c) Where such structure is a utility, the Applicant may supply a notarized letter, an utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6-3.12 and Rttic.! 64.19 & Flare! Rock/Metal Alining Rule 6._3.12 and Rule 6,4, 20) The Colorado Mined Land Reclamation Board ( "13oarcl ") has determined that this firm, if properly executed, represents an agreement that complie's with Construction Materials Rule 6.3.12(a), Rule 6.4.190), and C.R.S. 34-32.5-115(4)0 and with Hard Rock4feta1 Mining Rule 6.3.12(0). Rule 6.4. 20(4 and C:. N.S. § _34-32-115(4)(d), This form is fin' the sole purpose of ensuring d'ompliance witlnthe Rules and Regulations and .,hall not make the Board or DiVISlorr ca necessaly pally to ally privcatccivil lawsuit to oforce the terms o/'the agreement or create any errliveemeat obligations in the Board or the .l]il; isinrr. . The following structures are located on or within 200 feet of the proposed affected area: Oil/Gas Tanks and Equipment 2. Oil/Gas Lines 3, 4. 5. (Please list additional structures on a separate pag0 CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), Rand Ray Executive Director (print by Y Y (print representative's name), as (} representative's title), does hereby certify that Petroleum Development Corp/Chevron structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit File Number M- 202 -� (operation name), This Ortiz has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Const►•uetion Materials and the Colorado Mined Land Reclamation Act for Hurd Rock, Metal, and Designated Mining Operations. Any alteration or modification to this fo►m shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEOED BY: A17p1 Kant Central Colorado Water Conservancy District Representative Nance Randy Ray Date f /I Y Titic Executive Director STATE OF ( ( ) ss. COUNTY OF l l:(la ) The foregoing was acknowledged before me this_ Randy Ray as }executive director Notaicy Public day of �f,i.�: , 20 �by or Cer,i4i colorada _ water Conservancy District My Commission Expires: (:I, ALISON DONOVAN l'ORT ER Notary Public State of Colorado Notary ID ik 20234022964 My Commission Expires 06-20.2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF ) ) ss. COUNTY OF ) Name Title The foregoing was acknowledged before me this as Notary Public day or _ of 20 --1 by My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 JC York From: JC York Sent: Monday, July 29, 2024 2:19 PM To: Scott Meining; Connor Meining Cc: Randy Ray; William Mihelich; Chris Leone Subject: Sweet Valley Pit - Structure Agreements for the Meining Cattle Co Property Property (Property where House is located south of CCWCD Property) Attachments: Structure Agreement MeiningCattle.pdf; Structure Agreement Meining.pdf; Mining_Mining Plan 2024.03.28.pdf; JT-Slope Stability Case Location Map -1 Scott / Connor — and the Scott Meining JT-Exhibit C -Pre - 12 Permit 2024.02.29.pdf Attached are structure agreements for the properties that are adjacent to the mining permit boundary where there are structures within 200 feet of the mining permit boundary. The Division of Reclamation, Mining, and Safety (DRMS) requires that we attempt to get a structure agreement with structure owners that are within 200 feet of the mining permit boundary. You can sign the signature page if you would like to and return to us. If not that is ok as well because we have performed a slope stability analysis that shows the mining slopes proposed are within the required factors of safety that the DRMS requires. I have attached maps showing the mining plan and also the location of the slope stability cases that were ran in the slope stability analysis. Let me know if you have any questions. Regards, J.C. J.C. York, P.E. J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office: (303) 857-6222 Mobile: (970) 222-9530 FAX: (303) 857-6224 1 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The Slate of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where; a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between t.hc Applicant and. the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where Such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.12 and Rule 6.4.19 di Mari Root /Metal Mining Rule 6.3.12 and Rule 6.4.20,) The Colorado Alined Land Reclamation. Board ("Board") has determined that this, 0rm, iJ properly executed, represents an agl'eement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C.R.S. § 34-32.5-117(4)(e) and with hard Rock/Metal Itiliriilt�,r Rale 6.3.12(a), Rule 6.4.:20(a), and C.R.S. § 34-32-115(4)0. This 'Orin is,/or• the sole purpose of ensuring compliance with the Rifles and Regulations and shall not make the Board or Divi.sirm a nec•essai;l' pasty, to aqv private civil lawsuit to enfrrre.e the terms of the agreement or create an.v enfim ement obligations in the Board or the IjiVlsiorr. L ' The following structures are located on or within 200 feet of the proposed affected area: Stacked Hay/Feed z. Equipment Storage Area 3. , (Please list additional ,structures on a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray _ (print repr'esentative's name), as Executive Director (print representative's title), does hereby certify that Scott Meining (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit File Number M- 2021 - 0 i 5 (operation name), This form has been approved by the Colorado Alined Lund .Reclrrmotion Board pursuant to its authority under the Colorado ,Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act far Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding Mis_form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY, Applicant Central Coforacfo Water Conservancy District Representative Name Randy Ray i Date Title Executive Director STATE OF (1:16,:d.L. ) I ) ss. COUNTY OF Tile foregoing was acknowledged before me this Randy Ray as Executive Director clay of , 201' by Notafy Public of ClAtfal Colorado Water Conservancy District My Commission Expires: C'r • ','L • 2i'2 d ALISON DONOVAN FORRER Notary Public State of Colorado Notary ID it 20234022`764 My Comrnisslon Expires 06.20-2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY ()F } ) ss. Name Title The foregoing was acknowledged before me this day of , 20 by as of Notary Public My Commission Expires: Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a botariv.ed agreement between the A.pplicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.1? and Ruk 6.4.19 & Hard Rook/Aletal Alining Rule 6.3.12 and Rile 6.4_20) The Colorado Mined Land Reclamation. Board ("Board") has determined that this. 0rm. if properly executed, r•c-presents an agreement that complies with Construction Materials Rule 63.12(a). Rule 6.4.19(x), and C R.S. § 34-3?.5-115(4)(0 and with Hard Rock/Afet£11. Mining Rule 6.3.1?(a), Rule 6.4.?l)(a), and C.R.S. § 34-32-115(4)(d), This JOrm i_sfor the sole puipo.se of ensuring compliance with the Rules and Regulations and shall not make the Board or Divi.ciorr a necessary party to any private: civil lawsuit t0 enfOrce the terms Qf the agreement or cxeate any enforcement obligations in the Board Or the 1�lVl.Sl017. ' The following structures are located on or within 200 feet of the proposed affected area: l Sucked Hay/Feed Equipment Storage Area 4. 5. (Please list additional structures on a ,separate pag ) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (printrepresentative's title), does hereby certify that Meining Cattle Co., LLC (structure owner) shall be compensated for any damage: from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application forSweet Valley Pit (operation Name.), File Number M- 2024 _ 015 This form has been approved by the Colorado !Mined Laird Reclamation Board pursuant to its authority under the Colorado Land Reclamation Aetfor the Extraction of Cimstruction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modif►cathm to this firm shall result in voiding thr's form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant Central Colorado Water Conservancy District Representative Name Date. STATE OF COUNTY OF ) ss. ) Randy Ray Title Executive Director l�• The foregoing was a.cknowle<d L before me this l d f 1r� Randy Ray h ge c c ay o , 20P � } by as Executive Director of Cent al Colorado Water Conservancy District_ Notary Public, My Commission lixpires: [.fr, li,' ALISON DONOVAN FORRER Notary Public State of Colorado Notary ID 20234022964 N1y Commission e,xplrerA 06-20,2.027 'Lr/ •j NOTARY FOR STRUCTURE OWNER AC14NOW ILEGED BY: Stricture Owner - Date. STA.-1'E OF COUNTY OF ) ss. Name Title The foregoing was acknowledged before me this day of , 20 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 JC York From: JC York Sent: Tuesday, July 30, 2024 7:15 AM To: Dawn Anderson Cc: Randy Ray; William Mihelich; Chris Leone Subject: Sweet Valley Pit - Structure Agreement Attachments: Structure Agreement WeldCo.pdf; JT-Exhibit C-Pre-Mining_Mining Plan 2024.03.28.pdf; JT-Slope Stability Case Location Map -112 Permit 2024.02.29.pdf Dawn — I have attached a the structure agreement the Division of Reclamation, Mining, and Safety (DRMS) requires that we attempt to get with structure owners that are within 200 feet of the mining permit boundary. The structure agreement is with Central Colorado Water Conservancy District (CCWCD) for the CR 25.5 and CR 42 ROW that are adjacent to CCWCD's property and are within 200 feet of the mine permit boundary. I have also included the maps showing the mining plan and the locations of the slope stability sections. Let me know if you have any questions and if you want to sign the agreement please send a scan of the signature page back to us. If not that is ok as well because we have performed a slope stability analysis that shows the mining slopes proposed are within the required factors of safety that the DRMS requires. Let me know if you have any questions. Regards, J.C. J.C. York, P.E. J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office: (303) 857-6222 Mobile: (970) 222-9530 FAX: (303) 857-6224 1 Structure Agreement This letter has been provided to you as the owner of structure can or within two hundred (200) feet of a proposed mine site:. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shell not be; damaged by activities occur-ing at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(~) of the; utility that the raining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Role 6._3.12 and Rule 6.4.19 cc: Hard Rock/Metal Miming Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board".) has determined that t1J.1,s /oltu, if properly} executed, represents an agreement that complies ~Milli (7emstruction Materials Rule 6.3.12(x), Rule. 6,4.190), and CR.S. 34-32.5-115(4)(0 and with Hard Rock/Melrtl,MiningRule fi.3.1?(0)..Rule 6.4.2(40. and C.R.S. 4 34-32-11.5(4)0, This furnt is Ibr the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessaly part} to any private civil lawsuit to eufbrce the terms oldie agreement or create any enforcement obligations in the Board or the 1_aiVisiorl. The following structures are located on or within 200 Net of the proposed affected area: I. Gravel Roadway (WCR 25.5 and WCR 42) 1. Road Right -of -Way (WCR 25.5 and WCR 42) 3 4, 5. (Plea.ve list additional structures on a separate page) CERTIFICATION The Applicant, Central Colorado Wat=er Conservancy District by Randy Ray (print representative's game), as Executive Director representative's title), does hereby certify that Weld County (structure owner) shall be compensated for any damage from the proposed mining operation to the: above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit. A, of the Reclamation Permit Application for sweet Valley Pit (operation na.mc), File Number M- 2024 - 01 (print applicant/company name), (print This farm has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act_for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Ad/in- Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this. form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Y Ra Central Rand// -1.-L_ _-- 1lplalic;ant Ctl Colorado Water Conservancy ❑iRepresentativc.Nalr�c. Y Date 'title Executive Director STATE OF L'I:. ! r..)./.1,(1A, ) ) ss. COUNTY OF IA.:0 l' ) The foregoing was acknowledged before me this � i � �day of ... I:t 1....r...\ 20 '..'IL, by Randy Ray as Executive Director of Centr'ei Colorado Water Conservancy District . Notary -Public My Commission Expires: Or 1i'` ALISON DONOVAN FORRER Notary Public. State of Colorado Notary ID # 20234022964 My Cornmission Expires 06-20.2027 NOTARY FOR STRUCTURE OWNER ACICNOWLI GED BY: Structure Owner Date _ STATE O ) ) ss. COUNTY OF ) Name Title The foregoing was acknowledged before one this day of as of Notary Public , ?0 , by My Commission Expires:_ P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 U.S. Postal Service"' CERTIFIED MAIL® RECEIPT Domes►ic Mall Only `D rr m I •Nr_ ,n.�rl n1±n f eY• •- r. ,. .t x-+iy .9•.,1yYn. 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Only For daily = Information, visit our website at www,asPexelrr - lYtii Certll ed Mall Fee CI 5 Extra Services & Fee's [deck bar, odd Fes err aGper,r_•rato) ❑ Relum Receipt Nrr)copyl ❑slerern Receipt lalectron:cj 0 Corti -fled Mail Restricted Dellvary $ `' + []Adult Sianan ro Required S _ n [] Fdun Signature Restricted Dadvery Postage _.- .-... Tpt.pr( tags and Fees U.S. Postal Service'" CERTIFIED MAIL® RECEIPT For dclivdry Inforrrmmlon, visit our webslte at www.usps.com4'. Certified Mail Fee - - $ -I .._0 Extra SeryICBS & tees peck Lax, arid lee aslikk,,vr..10 Q Reeuro Reeedpt {herdcvpYl $ • :_r�{{� Q Return Heceipt leraclronlc) 6 f• l e rTr� Certified Mel] Heae feted Delivery $ .. ❑ Rdult Signature Required S ❑ Nutt Slgrufturu Ra51(Jc1f,0 yellvery $ Postage T I ' S_iLL Total Postage end Fees PS Form 3000, April 2015 'err 7530.02-oso 9097 Pcetrna:t Here ai4 de See Reverse for Instructions id 1 July 29, 2024 rp.rr rntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• CAW Equities, LLC 8301 E. Prentice Avenue, Suite 100 Greenwood Village, CO 80111-2904 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 CAW Equities, LLC RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a minim, operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred ('200) feet of the affected land, the .Applicant shall eititer: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structut•e; or b) Where such an agreement cannot be reached, they Applicant shell provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring*, at the alining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owncr(s) of the utility that the mining; and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.12 and Rule 64.19 c£ Hurd Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado Mined Land Reclamation Board ("Board') has determined that this,J0rm, t(. properly executed, represents an agreement -that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), cctrc1O.12..5". § 34-32_.5-115(4)(e) and with !-lard RoalMeta1 Mining Rule 6.3.12(a), .Rule 6.4.20(0), and C.R.S. § 34-32-115(4)(d). This firm is frir the sole purpose of ensuring compliance with the Rules and Regulations and shall not smite the Board or Division a necessaly party to dill, private civil lawsuit to eulbrce the terms of the agreement or create any enfor'ceinent obligations in the Board or the jet 4"r,511i11. The following structures are located on or within 200 feet of the proposed !:effected area: Property Line 3. 4. 5. (Please list additional structures air a squirate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy district (print applicant/company name), by Randy Ray (print representative'~ name), as. Executive Di (print representative's title), does hereby certify that CAW ECjLiltl@S, LLC (structure owner) shall be cotnpensated for any damage from the proposed mining operation to the above listed structure(s) located on or Within ?00 feet of the proposed affected arca described within Exhibit A, of'the Reclamation Permit Application for Sweet Valley Pit (operation name), File Number nil- 202 _015 This form has been approved by the Colorado Mitred Farad Reclamation Board pursuant to its authority under the Colorado Land Reclamation Acct for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Aet for.J`l'ard Rock, Metal, and Designated Alining. Operations. Any alteration or modification to this form ,shall result ht' bolding this form. NOTARY FOR PERMIT APPLICANT AC KNOWLEGED BY: Applicant Central Colorado Water Conservancy District Representative Name Randy Ray Date STATE OF (.'d /;(4j..( C'OUNTY OF (A-i`6:A. ) ss. Titie Executive Director The foregoing was acknowledged before me this 11 day of , jcc(.i� , 20;�'� by Randy flay as Executive t]iroctor p f rental Colorado Water Conservancy District Notary Pdblie (. My Commission Expires: L K . �f ; ALISON DONOVAN FORRER Notary Public State of Colorado Notary ID #20234022964 MV Commission Expires 0620-2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner ❑ate STATE OF COUNTY OF } ss. Name Title The foregoing was acknowledged before me this day of , Z�_ by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Centurylink 1919 65th Ave. Greeley, CO 80634 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Centurylink RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a :structure on or within two hundred (200) feet of a proposed mine. site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a gaining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Persons) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owncr(s) of the utility that the mining and reclamation activities, as proposed, will have. "no negative effect" on their utility, ( Construction Materials. Rule 6.3. lye and Rule 6.4.19 & Hard Rock/Metal Alining Rule 6.3.12 and Rule 6.4.20.) The Colorado Mined Land Rechnncatr.'on Board ("Board-) has determined that this Ibrm, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.190), and C.R.S. § 34-32.5-1150)(e) and with Hard Rock/Metal Mining Rude 6.3.17(a), Rule 6.4,20(4 and (`.R.S. § 34-32-115(4)(cl). This jOrm is fin. the wale putpose of ensuring compliance with the Rules and Regulations and ,shall not make the Board or DiViSiott a necessary party to any private civil lawsuit to enforce the terms oldie agreement Or ereate any enf.ireement obligations in the Board or the: Division. The following structures are located on or within 200 Peet of the proposed affected area: Telephone line 2. 3. 4. 5, (Please list additional structures on ra separate pager) CERTIFICATION The Applicant, Central Colorado Water Conservancy District • (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Centurylink (Structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on of within 300 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit File Numberm_424_015. (operation name), This form has been approved by the Colorado Mined Land Reclamation .Board pursuant to its authority udder the Colorado Land Reclamation Act for the Extraction of Construction .11iaterials and the Colorado Miners Land Reclamation Act for Hard Rock, Metal, and Designated Miming Operations, A 14 alteration nr modification to this form shall result in voiding this firm NOTARY FOR PERMIT APPLICANT" ACKNOWLECED BY: Applicant Colorado water Conservancy District lCprCwetlt8tive Nance Randy Ray J Date �f STATE OF ( l.tr r.O.I ) 55. COUNTY OF `A.; (?,(.l.:(. ) ) Title Executive Director rT The foregoing. was acknowledged before me this �.�� day of ,Iri,.� r: � , 2[1 r� , t)y Randy Ray qty Cxecutivo f�iraCtor of Gentian Colorado Water Conservancy DIsirict Notary UbliF My Commission Expires: (ii' ALISON DONOVAN n_TRER Notary PublIp State of Colorado Notary ID # 20234022964 My Commission Expires 06-20-2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OE Name Title The foregoing was acknowledged hetore me this day of _ , 20by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� ran dm 1 �.Vll�aal<lil,�' ill%+• CTW Properties, LLC 13434 County Road 42 Platteville, CO 80651-8715 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 CTW Properties, LLC RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on of within two hundred (200) feet of a proposed mine site. The: Mate of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a miring operation will adversely affect the stability of'any significant., valuable and permanent man-made structure locate(' within two hundred (200) feet of the affected land, the Applicant shall dither! a) Provide a notarized agreement between the Applicant and the Pcrson(s)having all interest in the structure, that the. Applicant is to provide compensation for any dainage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility., the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have .`no negative effect" on their utility. ( Construction Materials Rule 6.3.1 ' and Rule 6.4.19 & Hard Rack/Metal Mining Rule 6.3.1? and Mule 6_4.20) The Colorado Mined Land RC?C'I[7117I1Iion Board ("Board') has determined that this form, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.12(cr), Rtde 6.4.19(x), arty.' C.R.S. § 34-32.5-11 S(4)(e) and with Hard Rack/Metal Mining Rule 6.3.1?(cr), Rule 6.4.20(a), (tyre' C'.R.S. § 34 -3? -1150)00. This 'Orin is 16r the sole puipo,se of ensuring compliance with the Rules and Regulations and shall not make the. Board or Division a necessary party to any private civil lawsuit to enpree the terms of the agreement or create any enfarceme nt obligations in. the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area: 1. Access Road 2. Property Line 3. 4. w (Please list additional structures On a Separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's nacre), as Executive Director (print representative's title), does hereby certify that CTW Properties, LLC (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit. A, of the Reclamation Permit Application for Sweet Valley Pit (operation name), File Number M- 2024 _015 This form has been approved by the Colorado Mined .l and Reclamation Board pursuant to its authority under the Colorado .hand Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act. for Hurd Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACICNOWLEGED BY: Central Water Conservancy District Rand Ra •Y{ "i� l CApplicant Representative Nance y y f' 0 Date STATE OF ( l`U` ) ) ss. COUNTY OF \\ Title Executive Director The foregoing was acknowledged before me this 7Gt day of sl , 20: I by Randy Ray as Executive Director of Cor(tral Colorado Water Conservancy District (I(( . Notary Publi� My Commission Expires: n( :Jf. ,'(;',' j AL ISON DONOVAN FORREFI Notary Public State of Colorado Notary ID tf 20234022954 My Commission Expires 06.20-2027 NO'T'ARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF ) ss- Name. Title The foregoing \vas acknowledged before me this clay of , 20 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Chad & Kelly Doolittle 19729 County Road 25.5 Platteville, CO 80651-8908 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Chad & Kelly Doolittle RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed T1 -1111e site. The State of Colorado, Division of Reclamation, .M.iniag and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) leaving an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occur-ing at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the alining and reclamation activities, as proposed, will have "no negative effect.' ou their utility. ( C'an,structinn Materials Rule 6.3.12 and Rule 6. 1.19 c:1- Hard RockJllletal Mining Rule 61.3.12 and Rule 6.4. 20) The Colorado Mined Lance Reclamation Board (—Board") has determined that this form, r f properly executed, represents' an agreement that complies with Construction Materials Ride 6.3.120), Rule 6.4.19(a), and C'.R.,S. ys' 34-32.5-11.5(4)0 and with (lard Rock/Metal Mining Rule 6.3.1?(a), Rule 6-4.20(a), and C.R.S. 34-32-115(4W), This form i.s frar the sole purpose of ensuring compliance with the Rules and Regulations and shall rt0t make the Board or Division a necessary party to any private civil iatvsrrit tO cnlbrce the terms of the agreement or create any entbrcement obligations in the Board or the Divist'nta, The following structures are located on or within 200 feet of the proposed affected area: I House , Sheds 3. Concrete Irrigation Lateral 4. Fence 5. (Please list additional structures on a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Chad & Kelly Doolittle (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structures) located on or Within 200 tCct of the proposed affected area described within Exhibit. A, of the Reclamation Permit Application for Sweet Valley Pit (operation name), File Number M -2o24 -015 This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation /loft,. the Extraction of Construction Materials and the Colorado Mined Laud Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this farm shall result in voiding this farm. NOTARY FOR PERMIT APPLICANT AC KNOWLEGED BY: Applicant Central Colorado Water Conservancy District mepresentative Name Randy Ray Date STATE OF [_.d(.)i(iLl COUNT' OF I:6 t.ii ) ) 5s_ Title Executive Director r _ r The foregoing was acknowledged before me this li I i day of It{ i. f , 20O , by Randy Ray as Executive Director or Centhal Colorado Water Conservancy District , /--- T (.._ Notar -Public (' My Commission Expires: l( 'l( i • AL.ISON D0NOVAN FORRER Notary Public State of Colorado Notary ID # 202340229644 My Commission Expires 06-20-2027 NOTARY FOR STRUCTURE OWNER AC'KNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF ss-. Nance Title The foregoing was acknowledged before me this day of - , 20_, by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Brent & Fawn Graybill 12774 County Road 42 Platteville, CO 80651-8922 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Brent & Fawn Graybill RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of proposed mine site. The: State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable: and permanent man-made structure located within two hundred (00) Beet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Persons) having an interest in the structure., that the Applicant is to provide compensation for any damage to the structure; (A' b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is utility, the. Applicant may supply a notarized letter, on utility letterhead, from the; owner(s) of the utility that the mining and reclamation activities, as proposed, will have no negative effect" on their utility. ( Construction Materials Rule 6.3.1? and Rule 6.4.1.9 & Hard Rock/Metal Mining Rule 6.3.12 and Ride 6.4.?0) The Colorado Mined Land Reclamation Board ("Board') has determined that thisfor•rn, if properly executed, represents an agreement that complies with Construction Materials Rule 6.3.1?(a). Rule 6,4.19(a), and C.R.S, ,tip 34-32,5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(q), Rule 6,4,?0(a), and C.R.S. ,,Y 34 -3? -115(4)01). This Ibrm is for the ,sole purpose of ensuring compliance with the Rule's' and Regulations and shall not make the Board or Division a necessary party to any private 1cr1415'rlr.t 1C7 enfOrce the ier111.5 Team-. am- agreement or create any enfarCG'ment obli atron.s. in the Board or the Dl Vl.Srf)rr. The following structures are located on or within 200 feet of the proposed affected area: Fence 2. House 3. 4. 5. ( Please list additional structures on a ,separate page) CERTIFICATION Central Colorado Water Conservancy District (print applicant/company name), '1 he 1lpplic.al3t, _ (p by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Brent and Fawn Graybill (structure owner) shall be compensated for any damage from the proposed minim, operation to the above listed strueture(s) located on or within 200 feet oldie proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit (operation name), File Number M, 2024 , 015 This form has been approved by the Colorado Alined Land Reclamation Beard pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form .shall result in voiding,* thisform. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: r ApJ?! leantCentral Colorado Water Conservancy District Representative Name Randy Ray Date Title Executive Director f i, STATE OFI i'�,t:l(ll�,r.' ) ss. COUNTY OF Ilk' I A ) r1 The foregoing was acknowledged before me this ,1 day of ,1t , 101 by Randy Ray as Executive Director of Conqait Colorado Water Conservancy District Notary PubliC My Commission Expires: f, r AI_ISON DONOVAN FORREH Notary Public State of Colorado Notary ID # 20294022964 My Commission E=xpires 06-20-2027 1 NOTARY FOR STRUCTURE' OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF 1 ) ss. Name Title The foregoing was acknowledged before me this _ day of , 20 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• HS Land & Cattle Tax Service Department P.O. Box 366 Gilcrest, CO 80623-0366 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 HS Land & Cattle RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- Please review the attached structure agreement; and if acceptable please sign and return. If you have any questions do not hesitate to contact me atjcyorkg-tconsulting.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed nine site, The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the .Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be readied, the. Applicant shall provide an appropriate engineering, evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the alining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.1? and Rule 6.4.19 & Hard Rock/Metal Minim= Rule 6.3_12 and Rule 6.4. 0) The Colorado Mined Land Reclamation Board ("Board") has determined that this form, properly executed, represents an agreement that complies with Construction .Materials Rule 6._3.12(a), Ruler 6.4.19(x), and C.R.S. § 34-32.5-115(4)(e) and with Hard Rock/Metal Mining Rude 6.3.12(a), Rule 6.4.20(a), and C,R.S, § 34-32-115(4)(4 This form is,fnr the sole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to anY priVate ri►•il run}.sLrLt to enfOr'ce the terms of the agreement or create any enfnrc�ement obligations in the Board or the I)i�Jii'ir�ra. � . The following structures are located on or within 200 feet of the proposed affected area: l Irrigation Lateral Pipeline 2. Irrigation Structures (turnout boxes and culverts) stacked Irrigation Pipe 4. Fence 5. (Please list additional .structures on a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that HS Land & Cattle, LLC (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed strueture(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the 'Reclamation Permit .Application for Sweet Valley Pit (operation name), File Numberzo2a 015 This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock. Metal, and Designated Mining Operations. Any alteration or modification to this from shall result in voiding this forte,. NOTARY FOR PERMIT APPLICANT AC K.NOWLEGED BY: Applicant Central Colorado Water Conservancy D'++strict Representative Name Randy Ray Date STATE OF COUNT' OF ) ss. } Title Executive Director The foregoing was. act nowledged ] efore me this II }l! clay of 46� � , 2() �!�by Randy Ray as Executive Director of Cerit al Colorado Water Conservancy District Notary Public. f My Commission Expires; i.l[ 'r; I `1 -i ALISON DONOVAN FORRER Notary Public State of Colorado Notary ID R 202340229&4 My Commission Expires 06:20.2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF i } ss. Name Title The foregoing was acknowledged before nee this day of , ?0 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Patrick and Sheryl Maroney 19619 County Road 25.5 Platteville, CO 80651-8909 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Patrick and Sheryl Maroney RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter' has been provided to you as the owner of structure on or within two hundred (200) feet of proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable, and 11t;1`manent elan-1l'la.de structure located within two hundred (?00) feat of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the; structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or e) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have: "no negative effect" on their utility. ( Construction Materials Rule 6.3.12 and Rule 6.4.19 & Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4.20) The Colorado 1ldi►red Land Reclamation Board ("Board') has determined that this /orin, properly executed, represents an agreement that complies with Construction Materials Rule 6.3.120), Rule 6.4.19(a), and C'.R.& 34-32.5-115(4)(e) and with Hard Rock/Metal Alining Rule. 6.3,12(a), Rule 6.4.20(a), and C R.aS. 34-32-115(4)(c!). Tans. br1 .. is fin. the .sole pur June of ensuring conrplianc e with the. Rules and Regulations and ,shrill not make the Board or DiVisiorr a necessary party to any private C IVdl lawswit to enfi rce the terms of the agr'c�811 ent or create any enforcement obligations in the Board or the Di��i.siarl. _ - The following structures are located on or within 200 feet of the proposed affected area: House 2 Sheds Concrete Irrigation Lateral 4. Fence 5. (Please list additional structures On a .separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Patrick & Sheryl Maroney (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application forSweet Valley Pit File N11t71bC1 M- 2024.01 (operation name), This form has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the CoMrado Land Reclantation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act, for Hard Rock, Metal, and Designated Mitring Operations. Any alteration or modification to this form shall result in voiding this form. NO'T'ARY FOR PERMIT APPLICANT ACKNOWLECiED BY: District , Rd Ray 4 - `� Central Colorado Water Conservancy an _. Applicant Representative Name Y y f f ' Data Title Executive Director STATE OF ('Li 'v r'{/tr ) ) ss. COUNTY Or 1.t,'('JA } I�t rX f The foregoing was acknowledged before the this ;1 day of )l( by • or Centrei Colorado Water Conservancy Chstrict Randy Ray as Executive Director Nota`t•.yPublic . I My Commission Expires: AUSON DONOVAN FORRER Notary Public State of Colorado Notary If) # 20234022964 My Comrnission Expires 06-20-2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF i ss. Name Title The foregoing was acknowledged before me this___ day of . 20 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Gerald & Teresa Moran Sarah Drinkwine 19801 County Road 25.5 Platteville, CO 80651-8908 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Gerald & Teresa Moran and Sarah Drinkwine RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- Please review the attached structure agreement; and if acceptable please sign and return. If you have any questions do not hesitate to contact me atjcyorkg-tconsulting.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability ofany significant, valuable and permanent man-made structure located within two hundred (200) feet ot'the affected land, the Applicant Shall either: a) Provide a notarized agreement between the ,/applicant aril the. Person(s) having an interest in the structure, that the. Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate; engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant May supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the alining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6,3.1? and Racle fr_4.19 & Hard Rock/Metal Alining Rule 6.3,12 and Rule 6.4.20.) The Colorado Mined Land Reclamation 'Joa / ("Board') hcr..E determined that this, jOrm, u- p -Opel -1y executed. represents an agreement that complies with Construction Materials .Rule 6.3, I 2(0), Rule 6.4.19(a), and C' R.S. 55 34-32.5-115(4)(e) and with /lard Rock/Metal Mining Rule 6.3.12(q), Rule 6.4.20(0, crrrcl C.R.S. § 34-32-115(4)(d). This "Linn is in- the sole put1)ose of ensuring compliance with the Role's and Regulations crrrcl ,shall not make the Board or Division a necessary party to any private civil lawsuit to eujrrce the terms of the agreement nr create any c:rt%or-eetr eat obligations in the Board or the Uivlsi�rr. The following structures are located on or within 200 feetof the proposed affected area: House 2. Sheds 3. Concrete Irrigation Lateral 4. (Please list additional structures on a separate page) CERTIFICATION Central Colorado Water Conservancy District The Applicant,-- -- {print applicant/company name}, by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Gerald a Teresa Moran and Sarah pr;nkwina (structure owner) shall bc compensated for any damage from the proposed mining operation to the above listed structures) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Rectal -nation Permit Application for Sweet Valley Pik File Number M- 2024_015. (operation name), This firm has been approved by the Colorado Mimed Land Reclamation Board pursuant to its authority under the Colorado Gaud Reclamation Act for the Extraction of C rmstruction Materials and the Colorado Mined Land Reclamation .Act. for Hard Rock, Metal. and Designated Alining Operations. Any alteration or modification to this foram shall result in voiding this firm. NOTARY FOR PERMIT APPLICANT ACKNOWLECIED Central Water Conservancy District Randy Ray l cacti -ado Representative Nance / =- • r Date ( i r..'� r Title Executive Director STATE OF (1.��,� COUNTY OF I:I,i1..4. ) ss. } 1 . ll E The foregoing was acknowledged before nee this � day of �� , 20 ' �i , by Randy Ray as Executive 6irector of Centro Colorado Water Conservancy District Notary Pgbflie My Commission Expires: l l ;1.E_ • `l.(.'''; ALISON DONOVAN FORRER Notary Public State of Colorado Notary I❑ 420234022964 My Commission Expires 06-20.2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY Structure Owner Date STATE OF COUNTY OF )s 1 ss. Name Title The foregoing was acknowledged before me this day of , ?D , by as of Notatyy Public Nay Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Poncelow Family Living Trust P.O. Box 37 Milliken, CO 80543-0037 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Poncelow Family Living Trust RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The: State of Colorado, Division of Reclamation, Mining and Safety ("Divisions") requires that. where a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the. Person(s) having all interest in the structure, that. the Applicant is to provide. compensation for any damage, to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such Structure Shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant tray supply a notarized letter, on utility lettcnc�ad, from the. owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3,12 and Rule 6.4.I J & hard Rock/Aletol Alining Rule 6.3.12 and Rule 6.4.20) The Colorado Alined Land Reclamation Board ("Boar'd') has determined that this Pon, If properly executed, d, represents CM agreement that complies with Corr.struction Materials Rule 6.3.12(O, Rule 6.4.19(a), and C:.R.S, ,�ti 34-32,5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.l2(a), Ruk 6.4.20(a), and CRS. 34-32-115(4)(d). This form is for the .vole purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or' Division a necessary party to alt►, private civil lawsuit to enlOr ee the terms of the agreement or create any enl-or 'eme..nt obligations in the Board or the 1�lL'l.SrOrl. The following structures are located on or within 200 Net of the proposed affected area: Fence 2. Shop and Shed Z. House 4. s. (Please list additional' structures on it separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Poncelow Family Living Trust (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within ?00 feet of the proposed affected arca described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit 5. FtIC Numberm_ 2424 m 01 (operation name), This fr►r►n has been approved by the Colorado Mined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Mined Land Reclamation Acct for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall result in voiding this firm. NOTARY FOR PERMIT APPLICANT ACKNOWLEGE❑ BY: ApplicantCentral Colorado Water Conservancy District Representative NameRandy Ray Date STATE OF (. fJ ) ss, COUNTY OF 0.,'da ) Title Executive Director Il. The foregoing was acknowledged before rne� this I( day of Lik , 20 , by Randy Ray as Executives Director of Central Colorado Water Conservancy District Notary Public My Commission Expires: (.t( J(' ALISON DONOVAN EORRER Notary Public State of Colorado Notary ID if 20234022964 My Commission Expires 06-20-2027 NOTARY FOR STRUC'T'URE OWNER ACKNOWI,FGED Structure Owner Date STATE OF COUNTY OF ) ss, Name 'Title The foregoing was acknowledged betbre me this day of _ as of Notary Public My Commission Expires: , 20 , by P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Red Tierra Equities, LLC 8301 E. Prentice Avenue, Suite 100 Greenwood Village, CO 80111-2904 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Red Tierra Equities, LLC RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of structure on or within two hundred (200) feet of proposed mine site, The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a raining operation will adversely affect the stability of any significant, valuable and permanent man-made atmeture located within two hundred (200) Feet of the affected land, the Applicant shall either; a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the. Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide are appropriate engineering, evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant May supply a notarized letter, on utility letterhead, from the owncr(s) of the utility that the mining and reclamation activities, its proposed, will have. "no negative effect" on their utility, ( Construction Materials Rule 6.3.1? and Rule} 6.4.19 & Hard RockiMetal Alining Rule 6.3.12 and Rule 6.4.20) The Colorado A4inecl Land Reclamation Board (-Board') has determined that this Juan, if properly executed, represents' an agreement that complies with Construction Materials Rude 6.3,1?(a), Rule 6.4.19(cr), am! C.R.S. 34-32.5-115(4)(e) and with Hard Rnckafetal Mining Rule ta.3.12(tr.), Rule 6.4. 200), and CR.S. 34-32-115(4)(d). This fbr in is for the solo put'lxue of ensuring compliance with. the Rules and Regulations and shall not make the Board or Division a necessary party: to any private civil lawsuit to err.f nve. the terms of the agreement or create anv er7fflrcen ent obligations in. the Board or the Divisor?. The following structures are located on or within 200 feet of the proposed affected area: I. Fence Concrete Irrigation Ditch Access Load 4. 5 (Please list additional structures ou a separate page) CERTIFICATION The Applicant, Colorado Water Conservancy District (print applicant/company name), by Randy Ray _(print representative's name), as Executive Director (print representative's title), does hereby certify that Red Tierra Equities, LLC (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structttre(s) located on or within ?00 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit 5. File Number M-2024 _ (�� (.operation name), This form has been approved by the Colorado Alined Lured Reclamation Board pursuant to its authority under the Colorado Lured Reclamation Actin,. the Extraction of Construction Materials and the Colorado Mined Lund Reclamation Act for Jiard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this farm shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED IIY: Apl7l1Gatlt. Central Colorado Water Conservancy District Representative Name Randy Ray ' ' SFv '�+ .' Date -1. " STATE OF (-'{ ILL'r ) 5s. COUNTY OF L' i''+Ut ) Talc Executive Director The foregoing was acknowledged before me this it _ Randy Ray as Executive Director Notary Public Ei day of :. )i.+ f , 2{} f `, by of Central Colorado Water Conservancy District , My Commission lsxpires: l ALISON DONOVAN FORRER Notary Public Stele a1 Colorado Notary 1D # 7.023407.2964 lvty Commission Expires 06-20.2027 1 NOTARY FOR STRUCTURE OWNER AC KNOWLEGED BY: Structure Owner Date STATE OF ) J ) ss. COUNTY OF ) Nance Title The toregoing was acknowledged before me this day of , ?0 by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• William and Kimberly Scott 19529 County Road 25.5 Platteville, CO 80651-7959 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 William and Kimberly Scott RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site, The. Mate of Colorado, .Division of I.cclainatum, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent ratan -made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest. in the structure, that the /Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.12 and Rrrlc- 6.4.19 Hard Pock/Alc:tal Mining Rule 6.3,12 and Rule 6.4.2(1) The Colorado Mined Land Reclanmtirm Board ("Board") hax determined that this la' rrrr, iJ properly executed, represents an fly,=rcement that complies with Construction Materials Rule. 6.3.12(a), Rule 6.4.190), and C.R.S. § 34-32_5-1 15(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 61,4,20(4), and C'R,S'. yti' 34-32-115(4)(d). This firm is for the sole pui ose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to any private civil lawsuit to etOrce the: terms of the. agreement or create any enforcement obligations in the Board or the: Division. The following structures arc located on or within 200 feet of the proposed affected area: l Fence ,. Concrete Irrigation Ditch 3. House �l. (Meuse list c. hhtional structures on a separate page) CERTIFICATION 1'11c Applicant, Central Colorado Water Conservancy District (print appiie.anticompatny name), by Fundy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that William David Todd and Kimberly Scott (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on. or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit _ (operation name), File Number M-2024-015 This forth has been approved by the Colorado Alined Land Reclamation .Board pursuant W its authority under they Colorado Land Reclamation Act for the Extraction of Construction Materials and the Colorado Milted Land Reclamation Act for Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this firm shall result in voiding this limn. NOTARY FO.R PERMIT APPLICANT AC'KNOWLEGED BY: Applicant. Central Colorado Water Conservancy District Representative Name Randy Ray Date -• Title Executive Director STATE OF y ss. COUNTY OF ti:'Ai } The foregoing was acknowledged before me this 011' day of Ids , 2011 , by Randy Ray as Executive Director or Cenk. i Colorado Water Conservancy District Notary. Public My Commission Expires; {'IP t�r 1r.`! I ALISON DONOVAN FORRER Notary PulOc State of Colorado Notary ID !1 20234022964 My Commission Expires 06.20.2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY Or Name Title The foregoing was acknowledged before me this day of , ?0 , by HS c7f Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Brady & Lauren Sharp 13042 County Road 42 Platteville, CO 80651-8715 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Brady & Lauren Sharp RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure o n or within two hundred (200) feet of a proposed mine site. The State ofColoraclo, Division of Reclamation, Milling and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent than -glade structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement. between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be darnaged by activities occurring at the ruining operation; or c.) Where such structure is a utility, the:. Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" can their utility. ( Construction Materials Rule. 15.3.12 and Rule 6.4,19 & Hurd Rock/Metal Mining Rule 6,3.12 +aril Rule 6.4.20.) The Colorado Mined Lund Reclamation Board ("13nard'} has determined that thisform, if properly executed., represents an agreement that compile). with Construction Materials Rule 6. 3.12(ir), Rule 6.4.19(a), and C.R.S. iti` 34-32.5-115(4)(e) and with Hard RoclrlMetal Mining Ride 63.12(a), Rule 6.4.20(a), and CRS, 34-32-115(4)(cd). This form is for the sole purpose: of ensuring compliance with the Rides and Regulations slut .shall not ++rape the Board or Division a necessary party to any private civil lawsuit to Err_ force the terms oldie die a r'eem ni or create any enforcement obligations in the Board or the Urvr,srorr. The following, structures are located on or within 200 feet of the proposed affected area: 1. Fence Shop 3. Propane Tank 4. Stacked Pipe 5. (.Plea.Ye list cxlcliliurrrll S'tr°it tr.lres On cr .separate page) CER'T'IFICATION The Applicant, Central Colorado Water Conservancy District (.print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Brady & Lauren Sharp (structure owner) shall be compensated for any damage front the proposed mining operation to the above: listed structure(s) located on or within ?OD feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit (operation name), File Number M- 2024 - 015 . This firm has been approved by the Colorado Mired Larval Reclamation Board pursuant to its authority under the Colorado Land Reclamation Actjiff the Extraction 0 -Construction Materials and the Colorado Mined Land Reclamation Act for Hard Rock, Metal, and Designated Alining Operations. Any alteration or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT A.CKNOWLEGE,D BY: Central Colorado Walter Conservancy District Rand Ra Applicant Representative Name y . Ray Date Title Executive director sTA` E OF 1,:r:..1.117.4(' ,_ r. I.l. l7.4 (' ) ss, COUNTY OF l U, The foregoing was acknowledged before me this Randy Ray as Executive Director day of 7E�_�,, , ? .y+ , by Centr'al Colorado Water Conservancy District , My Commission Expires: At_}SON DONOVAN FORRER Notary Pu6fic State of Colorado Notary ID rr 20234022964 My Commission Expires 06-20-2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF } ss. Name 'Title The foregoing was acknowledged before lue this day of , 20_ , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Terry and Janice Weideman 13434 County Road 42 Platteville, CO 80651-8715 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Terry and Janice Weideman RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a raining, operation will adversely affect the stability of any significant., valuable: and permanent roan -made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest. in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; of c.) Where such structure is a utility, the Applicant may supply a notarised letter, on utility letterhead, from the owner(s) of the utility that the raining and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction hlatcr•ials Rule 6.3.12 and Rule 6.4.19 d Hard Rock/Metal Alining Rule 6.3.12 and Rule 6.4. 0) The Colorado Mined Land Reclamat m Board ("Board') has determined that this )(Orin, if properly executed, repre'sent's all agreement that complies suitor Construction Materials Rule 6.3.12(a). Rule 6.4.19(a), and C.R.S. 34-32.5-115(4)(e) and with Hard Rock/A/fetal Mining Rule 6,3,12(a), Rule 64,20(a), and C. R.S. § .34-32-1 5(4)(d). ! iris forth IS f w the .solo put pose of ensuring•compliance with' the Rules and Regulations and shall not make the Board or DiViSiOn a necessary party to any private civil lawsuit to enforce the terms. of the agreement or create anv en/in-cement obligations in the Board or the l�ii�isiorr. The following structures are located on or within 200 feet of the proposed affected area: Concrete Irrigation Lateral Ditch Culvert for Irrigation Lateral Ditch 4. 5. (Plea.ve list additional structures tm a separate page) CERTIFICATION 'rile Applicant, Central Colorado Water Conservancy District (print applicant/company name), �, Executive Director _ (print � y Ray ExeY _(print representative's name), as -_[l - representative's title), does hereby certify that Terry & Janice Weideman (trucntru cnvucr) shall be compensated for any damage from the proposed alining operation to the above listed structure(s) located on or within ?00 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit (operation name), Fife Number M.-o2a _ 015. This form has been approved by the Colorado Mined Land Reclamation Board pursuant w its authority under the Colorado Land Reclamation Act, for the Extraction of Construction Materials and the Colorado Mined Land ,Reclamation Act for Hard Rock, .Metal, and Designated Mining Operations, Any alteration or modification to this forma shall result in voiding this farm. NOTARY FOR PERMIT APPLICANT ACKNOWLECiED BY: _ j. Central Colorado Water Conservancy District �c presentative Name Randy Ray ' ' Applicant _-- l -- Title Executive Director Date STATE OF COUNTY OF } ) ss. I I, �. The foregoing, was acknowledged before me this I I day ofd J' , 20_}, by Randy flay as Executive Director a Central Colorado Water Conservancy District _ Notary ublic My Commission Expires: ALISON D0NOVAN FORAER Notary Public State of Colorado Notary ID #20234022964 My Commission Expire 06-20-2027 . 7 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date STATE OF COUNTY OF Name Title The foregoing was acknowledged before one this day of _ as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Knudson Land Company Western Mutual Ditch Company c/o Randy Knudson 13497 Weld County Road 44 Platteville, CO 80651 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Western Mutual Ditch Company RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- Please review the attached structure agreement; and if acceptable please sign and return. If you have any questions do not hesitate to contact me atjcyorkg-tconsulting.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a ]Milling operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) f(;4t of the affected land, the Applicant Shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having all interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the, Applicant may supply a notarized letter, on utility letterhead, from the owner(ti) of the utility that the mining and reclamation activities, as proposed, will have "no negative effect" on their rltility. ( Construction Materials Rule 6.3.12 and Rule 6.4.19 'lard Roc klMetal Mining Rule 6.3.1? and Rule 6, 4.20) The Colorado Mined Land Reclamation Board ("Board") has determined that this jOrrn, if properly executed, represents an agreentellt that complies with Construction Materials Rule 63_120), Rule 6,4, 19(a), and C.R.S. ti{ 34-32,5-1 15(4)(e) and with Ilard Rock/Metal Minim; Ride 6.3.12(ra), Rule 6.4,20(a), and C.".R,s 5M` -34-32-115(4)(d). This form l,s.1br the sold putpose of ensuring compliance with the Rules and Regulations and .shall not make the Board or Division a necessary party to any private civil lawsuit to cnfOree the terms oldie asyrr•ee.►rtcnt ut. create any enjOr 'ement obligations in the F3ucrrd or the Division, The following structures are located on or within 200 feet of the proposed affected area: I. Irrigation Ditch 2. Irrigation Ditch Right--of-Way 3. Irrigation Structures (Headgates and Culverts) 4 5. (Please list additional structures O17 a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company narxlc}, by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that Vllesterrt Mutual Ditch Company (structure owner) shall be compensated for any damage from the proposed mining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit _ (operation name), bile. Number M- 2024 015 . nisi -mu has been approved by the Colorado Mined Land Reclamation Board parrsum:: to its authority rander the Colorado Land Reclamation Act for the .Extraction of Construction Materials and the Colorado Mined !arid Reclamation Act for Hard Rode, Metal, and Designated Mining Operations. Any alteration or modification to this limn shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWLEGED BY: Applicant Central Colorado miter Corservancy District Representative Name Randy Ray / � Date �l1' STATE OF j rj (]",�A,{ • ) ) s5. COUNTY OF N•!Aik ) Title Executive Director 'The foregoing was acknowledged before me this � Randy Ray as Executive Director l it day of ILi' {•'••) , 20 /I) , by of Conttrial Colorado Water Conservancy Distnct Notary Public My Commission Expires: A,LISON DONovAld FORRER Notary Public State of Colorado Notary ID 4 20234022964 My Commission Expires 06-20-2027 NOTARY FOR STRUCTURE OWNER ACKNOWLEGED BY: Structure Owner Date: STATE OF COUNTY OF ) ss. Name. Title The foregoing was acknowledged before me this day of , 20 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Western Midstream 501 N. Division Blvd. Platteville, CO 80651 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Western Midstream RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site, The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an interest in the structure, that the Applicant is to provide compensation for any damage to the structure; or b) Where such an agreement cannot be reached, the Applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead. from the owner(s) of the utility that the ironing and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.12 and Rule 6.4.19 d Hard Rock/Metal Mining Rule 6.3.12 and Rule 6.4. 20) The Colorado Mined Land Reclamation Board ("Board-) has determined that this furnr, iJ properly c�cccuted, represents an agreement that complies with Construction uc'tion Materials Rule 6.3.12(a), Rule 6.4.19(ca), and C'. R. '. 55 34-32.5-115(4)(e) and with Hard Rock/Metal Mining Rule 6.3.12(a), Rule 6.4.20(a), and C.R.S. § 34-32-115(4)(x1). This jOrm is, Or the sole purpose of ensuring compliance with the Rules and Regulations and ,,ball not make the Board or Division a necessary party to any private civil lawsuit to errfnrce the terms o_f'the agreement or create any enlOreerr ent obligations in the Board or the Division. The following structures are located on or within 200 feet of the proposed affected area; 1 Gas line (Please list additional structures on a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (glint applicant/company name), by Randy Pay (print representative's name), as Executive Director (print representative's title), does hereby certify that Western Midstream (structure owner) shall be compensated for any damage from the proposed training operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit File Number M-2 24.015 (operation name), This foray has been approved by the Colorado Mined Land Reclamation 8oar•d pursuant to its authority under the Colorado Land Reclamation Act fir the Extraction of Construction Materials and the Colorado Mined Land Reclamation Act fur Hard Rock, Metal, and Designated Mining Operations. Any alteration or modification to this form shall resalt in voiding this font. NOTARY FOR PERMIT APPLICANT AC'ICNOWLEGED BY: eni's! C4dWtCrncDistrict oorao aer onsevay Rand Ray Applicant Representative NameY Y Gi Date r i,, STATE OF COUNTY OF lA `f'.i.('l ) ss. Title Executive Director The foregoing was acknowledged before me this It day of 1 I.1.:� i. 3 , 20'Pi , by Randy Ray _ _ as Executive Director of Cenirr t Colorado Water Conservancy District 3. My Cotramtsslon Expires: i(,` ''' `�' Notary kiLilte {! - ALISON DONOVAN FORREFi Notary Public State of Colorado Notary 4D # 20234022964 My Commission Expires 08-20.2027 NOTARY FOR STRUCTURE OWNER AC KNOWLEGED BY: Structure Owner Date STA'L'E OF COUNTY OF Name Title The foregoing was acknowledged before me this. as Notary Public day of _ of 20 by My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Williams Gilcrest, LLC 13781 Pacific Circle Mead, CO 80504 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Williams Gilcrest, LLC RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreemeut This letter has been provided to you as the owner of a structure on or within two hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Miring and Safety ("Division") requires that where a alining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred (200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the. Person(s) having all interest in the structure, that the Applicant is to provide compensation for any damage to the structures or b) Where such an agreement cannot be reached, the Applicant shell provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(s) of the utility that the minim and reclamation activities, as proposed, will have "no negative effect" on their utility. ( Construction Materials Rule 6.3.1 ) and Rule 6.4.19 cL Hard Rork/Aleial Alining Raley 6.3.12 and Rule 6,4.20) The Colorado Mined Land Reclamation Board ("'Board'') has determined that this 'brim if' properly executed, represents an agreement eat that complies with Construction Materials Rine 6.3.12(a), Rule 6.4.19(a), and C.R.S. 34-32.5-11S(4)(e) and with Hard Rock/Metal Alining Rule 6.3.12(x), Rule 6.4.20(a), and. C.R.S. ,ti5 34-32-11S(4)(d). This form is Ibr the sale purpose of ensuring compliance with the Rules and Regulations and shall not make the Board or Division a necessary party to ally private civil lawsuit to enforce the terms of the agreement Or create any, enforcement Obligations in the Board or the Divisinlr. The following structures arc located on or within 200 feet of the proposed affected area: 1. Oil/Gas Pipelines 2. 3. 4. 5. (PlCa.se 11.5'1 addrliOnal structures On a separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (prior applicant/company name), by Randy Ray (print representative's natrte), as Executive Director (print representative's title), does hereby certify that Williams Gllcrest, LLC (structure owner) shall be compensated for any damage from the proposed reining operation to the above listed structure(s) located on or within 200 feet of the proposed affected area described within Exhibit A, of the Reclamation Permit Application for Sweet Valley Pit (operation name), mile Number m_ 2024 _ 015 This form has been approved by the Colorado Alined Land Reclamation Board pursuant to its authority under the Colorado Land Reclamation Actfir r the Extraction of C'on.slruction Materials and the Colorado Mined Laud Reclamation Act, for Hard Rock, Metal, and Designated ,/Wiling Operations. Any alteration or modification to this fors: shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNDWLEGED BY: Applicant Central Colorado Water Conservancy District RcpreseritatiVe Name Randy Ray Date �( STATE OF b.1.L'r7(6.l.' ) ) ss_ COUNTY OF I',. ;f( Title Executive Director The foregoing was acknowledged before the this 1l day of lit( t , 20 , by Randy Ray as Executive Director of C©ht6I Colorado Water Conservancy District _ f •'. Notary.Public My Commission Expires: i .7f TClS0ND0N0VAN FORRER Notary PublicState of Colorado Notary ID # 202a40228G4 ommission Expires 06.20.2027 NOTARY FOR STRUCTURE OWNER ACIfNOWLEGED BY: Structure Owner Date STATE ()F COUNTY OF ) ss. Name Title The foregoing was acknowledged before me this day of , 20 , by as of Notary Public My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 id 1 July 29, 2024 rp.rr rryntic..lti.,.� rrsn dm 1 �.Vll�aal<lil,�' ill%+• Xcel Energy 1123 W. 3rd Avenue Denver, CO 80223 Re: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities To Whom it May Concern: Central Colorado Water Conservancy District (CCWCD) is reaching out to you with a structure agreement because the proposed permit boundary for the Sweet Valley Pit is within 200 feet of your property or utility. The Colorado Mined Land Reclamation Act provides protection for your property, and specific protection for your structures located within 200 feet of the mining activities. Your property is adjacent to the mine property and within 200 feet of the mining activities. DRMS permit approval requires a notarized agreement between the applicant and owners of structures within 200 feet of the mining activities, providing compensation for any damage to the structure; or preparation of an engineering evaluation acceptable to the DRMS, demonstrating that such structure(s) shall not be damaged by the mining activities if an agreement cannot be reached. CCWCD has had an engineering evaluation performed to determine acceptable setbacks from their mining permit boundary and mining limit to structures adjacent to the mining. The proposed mining slopes and setbacks were analyzed using the Galena v7.1 computer program. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 5,000 separate failure surfaces were analyzed for each case. The required minimum safety factors are based on the current standards used by the DRMS. The safety factors attained using the setbacks shown on the Mining Plan are greater than the required safety factors specified by the DRMS for an earth embankment during construction, and an earth embankment subjected to earthquake loading, based on the United States Geological Survey earthquake peak acceleration factors for the area. This evaluation indicated that damage to structures adjacent to the mining should not occur, even during earthquake conditions, which are unlikely to be present. Please review the attached structure agreement; and if acceptable please sign and return. ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Xcel Energy RE: Structure Agreement for Compensation for Damage to Structures within 200 feet of mining activities -2- If you have any questions do not hesitate to contact me at jcyork(c�j-tconsultinq.com or call my mobile at (970) 222-9530. Sincerely, J.C. York, P.E. J&T Consulting, Inc. Enclosures: 1. Structure Agreement 2. Mining Plan Map 3. Slope Stability Case Location Map ui 305 Denver Avenue — Suite D • Fort Lupton CO 80621 • Ph: 303-857-6222 Structure Agreement This letter has been provided to you as the owner of a structure on or within two Hundred (200) feet of a proposed mine site. The State of Colorado, Division of Reclamation, Mining and Safety ("Division") requires that where: a mining operation will adversely affect the stability of any significant, valuable and permanent man-made structure located within two hundred ('200) feet of the affected land, the Applicant shall either: a) Provide a notarized agreement between the Applicant and the Person(s) having an intercwt in the structure., that the. Applicant is to provide compensation for any damage to the structure; or h) Where such an agreement cannot he reached, the Applicant shall provide an appropriate engineering, evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation; or c) Where such structure is a utility, the Applicant may supply a notarized letter, on utility letterhead, from the owner(~) of the utility that the mining and reclamation activities, as proposed, will have "no negative effec't" on their utility. ( Construction Materials Rule 6.3.12 and Rule 6.4.19 & hard 1?ockhlletctl Alirtrrr ~ Ride 6.3,12 and Rule 6i. 4.20) The Colorado Mined Land Reclarnatirrrr Board ("Board') has determined that this farm, if. properly executed, represents all agreement that complies with Construction Materials Rule 6.3.12(a), Rule 6.4.19(a), and C,R.5". § 34-32,5-115(4)(e) and with Hard Roc1c/MetalIklining Rule 6.,3.12(4 Rule 6.4.20(a), and C.R. S'. § 34-.32-115(4)(d). This firm is fur the sole purpose of ensuring compliance} with the Rules and Regulations curd shall not make the Board or Division a necessary party to any private civil lawsuit to errfUr'c e the terms of the agreement or create any en f(]1'e'('!I ent obligations in the Board or the 1�11�r.Sr�711. , The following structures are located on or vvithin 200 feet of the proposed affected area: Power Poles Power Lines 3. 4. 5 (Please list additional structure's on a. separate page) CERTIFICATION The Applicant, Central Colorado Water Conservancy District (print applicant/company name), by Randy Ray (print representative's name), as Executive Director (print representative's title), does hereby certify that xcel Energy (structure owner) shall be compensated for any damage from the proposed mining operation to the above listen structure(s) located on or within 200 feet of the proposed affected arca described within Exhibit A, of the .l eclarnation Permit Application for Sweet Valley Pit (operation name), file Number M-2°24_015 Thitform has been approved by the Colorado Mined Lund Reclamation Board pursuant to its authority antler- the Colorado Land Reclamation Act, Pr the Extraction of Construction Materials arid the Colorado Mined Land Reclamation A ctf fur Hard Rook, Metal, and Designated Mining Operations. Any alteration Or modification to this form shall result in voiding this form. NOTARY FOR PERMIT APPLICANT ACKNOWL GED l3Y; Applicant Central Colorado Water Conservancy District Representative Name Randy Ray Date STATE OF (1,14,1i162 l:L l•li.r 6 COUNTY OF ) ss. Title Executive Director The foregoing was acknowledged before me this t ! day of �L�.�.' , 20 '?{' , by Randy Frey as Executive Director • pt' Centll Colorado Water Conservancy District Nota .y..,Ptiblic l l 1 My Commission Expires: N.-`. ALISON DONOVAN FORRER Notary Public State of Colorado Notary ID 4 20234022964 My Commission Expires 06-20-2027 NO'T'ARY FOR STRUCTURE OWNER ACKNOWLI GI D BY: Structure Owner Date STATE OF COUNTY OF } } ss. Nance. Title The foregoing was acknowledged before me this as Notary Public day of of ,2a ,by My Commission Expires: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 Application for: DRMS 112 Reclamation Operation Sweet Valley Pit m - Central Colorado Water Conservancy District 3209 West 28th Street Greeley, CO 80634 Phone: 970-330-4540 Prepared By: rui j&rf Consulting, Inc. 305 Denver Avenue — Suite D Fort Lupton, CO 80621 Ph: 303-857-6222 www. j-tconsu lti ng.com STATE OF COLORADO DIVISION OF RECLAMATION, MINING AND SAFETY Department of Natural Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 Phone: (303) 866-3567 FAX: (303) 832-8106 CONSTRUCTION MATERIALS REGULAR (112) OPERATION RECLAMATION PERMIT APPLICATION FORM COLORADO DIVISION OF RECLAMATION MINING ---- &— SAFETY CHECK ONE: There is a File Number Already Assigned to this Operation Permit # M - (Please reference the file number currently assigned to this operation) I' New Application (Rule 1.4.5) Conversion Application (Rule 1.11) Amendment Application (Rule 1.10) Permit # M - (provide for Amendments and Conversions of existing permits) The application for a Construction Materials Regular 112 Operation Reclamation Permit contains three major parts: (1) the application form; (2) Exhibits A -S, Addendum 1, any sections of Exhibit 6.5 (Geotechnical Stability Exhibit; and (3) the application fee. When you submit your application, be sure to include one (1) complete signed and notarized ORIGINAL and one (1) copy of the completed application form, two (2) copies of Exhibits A -S, Addendum 1, appropriate sections of 6.5 (Geotechnical Stability Exhibit, and a check for the application fee described under Section (4) below. Exhibits should NOT be bound or in a 3 -ring binder; maps should be folded to 8 1/2" X 11" or 8 1/2" X 14" size. To expedite processing, please provide the information in the format and order described in this form. GENERAL OPERATION INFORMATION Type or print clearly, in the space provided, ALL information requested below. 1. Applicant/operator or company name (name to be used on permit): Central Colorado Water Conservancy District 1.1 Type of organization (corporation, partnership, etc.): 2. Operation name (pit, mine or site name): 3. Permitted acreage (new or existing site): 3.1 Change in acreage (+) 3.2 Total acreage in Permit area Sweet Valley Pit 4. Fees: 4.1 New Application 4.2 New Quarry Application 4.4 Amendment Fee 4.5 Conversion to 112 operation (set by statute) 5. Primary commoditie(s) to be mined: Sand Gravel 5.1 Incidental commoditie(s) to be mined: 1. lbs/Tons/yr 3. / 147.83 permitted acres acres acres $2,696.00 $3,342.00 $2,229.00 $2,696.00 2. / lbs/Tons/yr 4. / lbs/Tons/yr 5. application fee quarry application amendment fee conversion fee lbs/Tons/yr lbs/Tons/yr 5.2 Anticipated end use of primary commoditie(s) to be mined: Construction Aggregates N/A 5.3 Anticipated end use of incidental commoditie(s) to be mined: - 2 - 6. Name of owner of subsurface rights of affected land: Central Colorado Water Conservancy District If 2 or more owners, "refer to Exhibit O". 7. Name of owner of surface of affected land: Central Colorado Water Conservancy District 8. Type of mining operation: Surface Underground 9. Location Information: The center of the area where the majority of mining will occur: COUNTY: Weld PRINCIPAL MERIDIAN (check one): SECTION (write number): TOWNSHIP (write number and check direction): RANGE (write number and check direction): QUARTER SECTION (check one): QUARTER/QUARTER SECTION (check one): I" 6th (Colorado) S 30 T4 10th (New Mexico) R 66 I� NE NE I" NW North East NW SE Iv SE I� South West SW SW Ute GENERAL DESCRIPTION: (the number of miles and direction from the nearest town and the approximate elevation): Approximately 1.25 miles East of Gilcrest. Elevation 4755.00. 10. Primary Mine Entrance Location (report in either Latitude/Longitude OR UTM): Latitude/Longitude: Example: (N) 39° 44' 12.98" (W) 104° 59' 3.87" Latitude (N): deg 40 min 16 sec 57 .47 (2 decimal places) Longitude (W): deg 104 min 48 sec 57 15 (2 decimal places) OR Example: (N) 39.73691° (W) -104.98449° Latitude (N) (5 decimal places) Longitude(W) (5 decimal places) OR Universal Tranverse Mercator (UTM) Example: 201336.3 E NAD27 Zone 13 4398351.2 N UTM Datum (specify NAD27, NAD83 or WGS 84) Nad 83 Zone 13 Easting Northing -3- 11. Correspondence Information: APPLICANT/OPERATOR (name, address, and phone of name to be used on permit) Contact's Name: Randy Ray Title: Executive Director Company Name: Central Colorado Water Conservancy District Street/P.O. Box: 3209 W. 28th Street P.O. Box: City: Greeley State: CO Zip Code: 80634 Telephone Number: (970 ) - 330-4540 Fax Number: ( ) - PERMITTING CONTACT (if different from applicant/operator above) Contact's Name: J.C. York Title: Principal/Owner Company Name: J&T Consulting, Inc. Street/P.O. Box: 305 Denver Avenue, Suite D P.O. Box: City: Fort Lupton State: CO Zip Code: 80621 Telephone Number: (303 ) - 857-6222 Fax Number: ( ) - INSPECTION CONTACT Contact's Name: Title: Company Name: Street/P.O. Box: P.O. Box: City: State: Zip Code: Telephone Number: ( ) - Fax Number: ( ) - CC: STATE OR FEDERAL LANDOWNER (if any) Agency: N/A Street: City: State: Zip Code: Telephone Number: ( ) - CC: STATE OR FEDERAL LANDOWNER (if any) Agency: Street: City: N/A State: Zip Code: Telephone Number: ( ) -4- 12. Primary future (Post -mining) land use (check one): I" Cropland(CR) Rangeland(RL) Residential(RS) Pastureland(PL) Forestry(FR) Recreation(RC) Developed Water Resources(WR) 13. Primary present land use (check one): Cropland(CR) Rangeland(RL) Residential(RS) I" I I I Pastureland(PL) Forestry(FR) Recreation(RC) Developed Water Resources(WR) General Agriculture(GA) Wildlife Habitat(WL) Industrial/Commercial(IC) Solid Waste Disposal(WD) General Agriculture(GA) Wildlife Habitat(WL) Industrial/Commercial(IC) 14. Method of Mining: Briefly explain mining method (e.g. truck/shovel): Excavation by Excavator, Loader, or Dozer and taken to processing area via haul trucks and/or conveyor. 15. On Site Processing: Crushing/Screening 13.1 Briefly explain mining method (e.g. truck/shovel): On -site crushing/screening fed by loader. List any designated chemicals or acid -producing materials to be used or stored within permit area: 16. Description of Amendment or Conversion: If you are amending or converting an existing operation, provide a brief narrative describing the proposed change(s). N/A Maus and Exhibits: Two (2) complete, unbound application packages must be submitted. One complete application package consists of a signed application form and the set of maps and exhibits referenced below as Exhibits A.S, Addendum I , and the Geotechnical Stability Exhibit. Each exhibit within the application must be presented as a separate section. Begin each exhibit on a new page. Pages should be numbered consecutively for ease of reference. If separate documents are used as appendices, please reference these by name in the exhibit. With each of the two (2) signed application forms, you must submit a corresponding set of the maps and exhibits as described in the following references to Rule 6.4, 6.5, and 1.6.2( 1)(b): EXHIBIT A EXHIBIT B EXHB3IT C EXHIBIT D EXHIBIT E EXHIBIT F EXHIBIT G EXHIBIT H EXHIBIT I EXHIBIT J EXHIBIT K EXHIBIT L EXHIBIT M DCHIB IT N EXHIBIT O EXHIBIT P EXHIBIT Q EXHIBIT R EXHIBIT S Rule 1.6.2(1)(b) Rule 6.5 Legal Description Index Map Pre -Mining and Mining Plan Map(s) of Affected Lands Mining Plan Reclamation Plan Reclamation Plan Map Water Information Wildlife Information Soils Information Vegetation Information Climate Information Reclamation Costs Other Permits and Licenses Source of Legal Right -To -Enter Owners of Record of Affected Land (Surface Area) and Owners of Substance to be Mined Municipalities Within Two Miles Proof of Mailing of Notices to County Commissioners and Conservation District Proof of Filing with County Clerk or Recorder Permanent Man -Made Structures ADDENDUM 1 - Notice Requirements (sample enclosed) Geotechnical Stability Exhibit (any required sections) The instructions for preparing Exhibits A -S, Addendum 1, and Geotechnical Stability Exhibit are specified under Rule 6.4 and 6.5 and Rule 1.6.2(1)(1)) ofthe Rules and Regulations. Ifyou have any questions on preparing the Exhibits or content ofthe information required, or would like to schedule a preapplication meeting you may contact the Office at 303.866-3567. Res onsibilifies as a Permittee: Upon application approval and permit issuance, this application becomes a legally binding document. Therefore, there are a number of important requirements which you, as a permittee, should fully understand. These requirements are listed below. Please read and initial each requirement, in the space provided, to acknowledge that you understand your obligations. If you do not understand these obligations then please contact this Office for a full explanation. 1. Your obligation to reclaim the site is not limited to the amount ofthe financial warranty. You assume legal liability for all reasonable expenses which the Board or the Office may incur to reclaim the affected lands associated with your mining operation in the event your permit is revoked and financial warranty is forfeited; - 6 .1. 2. The Board may suspend or revoke this permit, or assess a civil penalty, upon a finding that the permittee violated the terms or conditions of this permit, the Act, the Mineral Rules and Regulations, or that information contained in the application or your permit misrepresent important material facts; 3. If your mining and reclamation operations affect areas beyond the boundaries of an approved permit boundary, substantial civil penalties, to you as permittee can result; 4. Any modification to the approved mining and reclamation plan from those described in your approved application requires you to submit a permit modification and obtain approval from the Board or Office; 5. It is your responsibility to notify the Office of any changes in your address or phone number; 6. Upon permit issuance and prior to beginning on -site mining activity, you must post a sign at the entrance of the mine site, which shall be clearly visible from the access road, with the following information (Rule 3.1.12): a. the name of the operator; b. a statement that a reclamation permit for the operation has been issued by the Colorado Mined Land Reclamation Board; and, c. the permit number. 7. The boundaries of the permit boundary area must be marked by monuments or other markers that are clearly visible and adequate to delineate such boundaries prior to site disturbance. 8. It is a provision of this permit that the operations will be conducted in accordance with the terms and conditions listed in your application, as well as with the provisions of the Act and the Construction Material Rules and Regulations in effect at the time the permit is issued. 9. Annually, on the anniversary date of permit issuance, you must submit an annual fee as specified by Statute, and an annual report which includes a map describing the acreage affected and the acreage reclaimed to date (if there are changes from the previous year), any monitoring required by the Reclamation Plan to be submitted annually on the anniversary date of the permit approval. Annual fees are for the previous year a permit is held. For example, a permit with the anniversary date ofhly 1, 1995, the annual fee is for the period ofJuly 1, 1994 through June 30, 1995. Failure to submit your annual fee and report by the permit anniversary date may result in a civil penalty, revocation of your permit, and forfeiture of your financial warranty, It is your responsibility, as the permittee, to continue to pay your annual fee to the Office until the Board releases you from your total reclamation responsibility. 10. EiguricAtivenartnership operators: the signing representative is authorized to sign this document and a power of attorney (provided by the partner(s)) authorizing the signature of the representative is attached to this application. 8 Certification: As an authorized representative of the applicant, 1 hereby certify that the operation described has met the minimum requirements of the following terms and conditions: I. To the best ofmy knowledge, all significant, valuable and permanent man-made structures) in existence at the time this application is filed, and located within 200 feet of the proposed affected area have been identified in this application (Section 34-32.5-115(4)(e), C.R.S.). 2. No mining operation will be located on lands where such operations are prohibited by law (Section 34-32.5-115(4)(0, C.R.S.; 3. As the applicant/operator, I do not have any extraction/exploration operations in the State of Colorado currently in violation of the provisions of the Colorado Land Reclamation Act for the Extraction of Construction Materials (Section 34-32.5-120, C.R.S.) as determined through a Board finding. 4. I understand that statements in the application are being made under penalty of perjury and that false statements made herein are punishable as a Class 1 misdemeanor pursuant to Section 18-8-503, C.R.S. This form has been approved by the Mined Land Reciamadon Board pursuant to section 34-32.5-112,C.R.S., of the Colorado Land Reclamation Actfor the Detraction of Construction Materials. Any alteration or modification of this form shall result in voiding any permit issued on the Altered or modffled form and subject the operator to cease and desist orders and civil penalties for operating without Q permit pursuant to section 34-32.5-123, C.R.S. Signed and dated this Applicant/Operator or Company Name Signed: Title: Executive Director iP/5frid State of County of 1� ss • The foregoing instrument was acknowledged before me this 4�J by 4 i as • If Corporation Attest (Seal) LYNN KRAMER NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20034018159 MY COMMISSION EXPIRES JUNE 2, 202 Signed: Corporate Secretary or Equivalent Town/City/County Clerk { a war Public a Ai • FAChe f--Va'aii � roc y Commission expires: ki SIGNATURES MUST BE IN BLUE INK You must post sufficient Notices at the location of the proposed mine site to clearly identify the site as the location of a EXHIBIT A Legal Description A parcel of land situated in the Northeast % of Section 30, Township 4 North, Range 66 West of the 6t" Principal Meridian, in Weld County, Colorado, more particularly described as follows: The TRUE POINT OF BEGINNING being the Southeast corner of the Northeast % of the Northeast % of said Section 30; Thence, S 89° 44' 30.3" W for a distance of 2664.99 feet to a point on a line. Thence, N 00° 37' 44.5" W for a distance of 2664.83 feet to a point on a line. Thence, S 89° 59' 11.9" E for a distance of 1437.47 feet to a point on a line. Thence, S 01° 34' 04.0" W for a distance of 1184.17 feet to a point on a line. Thence, N 46° 41' 09.0" E for a distance of 141.08 feet to a point on a line. Thence, N 38° 55' 49.0" E for a distance of 101.05 feet to a point on a line. Thence, N 32° 32' 59.0" E for a distance of 91.98 feet to a point on a line. Thence, N 21° 51' 40.0" E for a distance of 100.04 feet to a point on a line. Thence, N 19° 13' 38.0" E for a distance of 146.21 feet to a point on a line. Thence, N 24° 57' 54.0" E for a distance of 338.87 feet to a point on a line. Thence, N 25° 15' 36.0" E for a distance of 133.11 feet to a point on a line. Thence, N 27° 58' 44.0" E for a distance of 161.23 feet to a point on a line. Thence, N 06° 35' 05.0" E for a distance of 130.66 feet to a point on a line. Thence, S 89° 59' 11.9" E for a distance of 666.12 feet to a point on a line. thence S 00° 40' 53.0" E a distance of 2652.22 feet to the TRUE POINT OF BEGINNING. The proposed mine entrance coordinates are as follows: Latitude: (N) 40° 16' 57.47" Longitude: (W) 104° 48' 57.15" Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT B Vicinity Map See attached map. �lir Consulting, Inc. ' Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, Vicinity Map, 3/8/2024 8:52:12 AM �-_ CR 42 WESTERN MUTUAL DITCH I SITE CR 40 N 'T^ Y J N CC U 0 0 O U LEGEND: I'/////////I CR 38.5 PERMIT BOUNDARY MINING LIMIT DITCH LIMITS SITE rn N CC U 2000 1000 0 GILCREST 2000 SCALE IN FEET u' J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Exhibit B Index Map Date: 03.08.24 Job No: 23038 Drawn: TWT Scale: 1" = 2000' Sheet: 1 Of: 1 EXHIBIT C Pre-Mining/Mining Plan Map See attached maps. �lir Consulting, Inc. ' Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan \.1T -Mining Plan.dwg, 1 -Pre -Mining Plan, 3/28/2024 2:52:21 PM - T - N M I K 30' PIPELNE EASEMENT REC. N0. 2IN0883 30' PIPELIN ER EMENT REC. N0. 12085\ EXISTING WESTERN NTI9\EAM GAS LINE EXISTING CVN.C.W.D. WATER LINE; EXISTING GICR p SANITARY qWE�� B EXISTING DCP GAS LINE EXISTING CENTURY LINK TELEPHONE 15' IRRIGATION EASEMENT Rte. N0. 3655694 s� EXISTING DCP GAS LINE EXISTING MEINING IRRIGATION LINE ABANDONED EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE al EXISTIIKFaMC/CHEVRON GAS LINE I \ Ni#,#,_Eh!'ISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #2 I Haas a I �a EXISTING IRRIGATION LINE TO BE ABANDONED JJ� EXISTING CURETON GILCREST NIIDSTREAM`r GAS LINE ROW L EXISTING XCEL NERGY .,5 OVERHEAD ELEC RIC LII G MW 87 EXISTING PDC/CHEVRON GAS LINE 4757 EXISTING WESTERN MIDSTREAM GAS LINE EXISTING PDC/CHEVRON GAS LINE 30' PIPELINE EASEMENT REC _NO.. 4085205_,_ d -.Sr D 7I °I I 'I 1� vvw#, ^" . EXISTING MEINING i„afaaaf ' i� WATER WELL i ¢i EXISTING PDC/CHEVRON GAS WELL LAUREN #1 FOR IRRIGATION EXISTING WESTERN MIDSTREAM GAS LINE EXISTING C.W.C.W.D. WATER LINE 120' PIPELINE EASEMENT REC. N0. 3636568—_ S �I � — I II T ) a ©I I I a II ) I I WI EXISTING PDC/CHEVRON I ) GAS LINE�� I I d II I IXF 14/ 9/4 " L — EXISTING PDC/CHEVRON GAS LINE EXISTING DCP GAS LINE EXISTING CURETON GILCREST MIDSTREAM GAS LINE -I __~__ - -e--- - -~ _��___.._ -`�--T-�-E-� ifME- s-��-�-� 1•-E-� f--�-�-� 7�-� 1•-�-� q -J 1 H / i JT-MW24 I II � IJ EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #1-30 �I II' EXISTING CURETON GILCREST MIDSTREAM It EXISTING CURETON GILCREST MIDSTREAM GAS LINE GAS LINE EXISTING MEINING UNDERGROUND ELECTRIC EXISTING PDC/CHEVRON ABANDONED GAS WELL MEINING #5 EXISTING SUNCOR GAS LINE ROW (REC. N0. 800101) NO WIDTH SPECIFIED FUTURE SUNCOR GAS LINE EXISTING PDC/CHEVROW GAS LINE 30' PIPELINE EASEMENT REC. N0. 4085206 EXISTING PD'81t8CHEVROl. GAS WELL ) MEINING #1-30B {l �J EXISTING CENTURY LIVK TELEPHONE i C E Q Icy ROW EXISTING PDC/CH'QN GAS WELL MEINING #1 30' PIPELINE EASMENT REC. N0. 4085206 I I ;II JT-MW34 55 7.50 EXISTING CENTURY LINK-� TELEPHONE EXISTING C.W.C.W.D. WATER LINE EXISTING CENTURY LINK FIBER OPTIC 30' PIPELINE EASEMENT G REC. N0. 4085206 EXISTING PDC/CHEVRON GAS LINE EXISTING WESTERN MIDSTREAM GAS LINE PRE -MINING PLAN MAP 200 100 0 200 400 600 I SCALE IN FEET ROW EXISTING XCEL ENERGY OVERHEAD ELECTRIC LINE PROPERTY OWNERS WITHIN 200 FEET I:I.MPFR IIAM, MAJl 61G Apr,p,SS A 1 .oh, •r.300.:09 A 7 10h r .:5:'00•. x 1 '1 ';700023 k 673•"200•":2 HS Land 8.:,alllc Tax Se^-,_ - Depar, •e.S D PO Poo: 36E. acres. :20 LOG:22-O3OE B 057::;90•:22 P :rce.oe. =anal; Liarg Dag P.T2 E3.37 Milk,. . CO 80:4'3-00: 7 ..,&7230022 C41. Egu �_:.•s LLC 8391 E ler,•.- ...e S•e 1�100 Gr••rl»-..Dori V,I o.e CO 80111 2c0a ;7 105:.;:.100370 I5•:ml '.V 13r,a;5Al awn L G.a.;C, I 127"1 Coon,. road 17 P a11,1, a C ri21 892'1 C .,1.726200'735 1 .5!29200.:30 B•ad, tau•::m K Sharp fern. _ee'Vae&n.a• Jar:ce . 'A•ede.-'an 13.342 Co .nt , R.43d 42 Pallr•,a a ;." 8;56.1.3716. 13121 Coant'1. Road 12 Pail. ,:l e CC' 30561-3715 *573'7100.721 CP.'; ,roar:r.:••; :LC 13434 CounC.:aal 12 H.atte,lle CO 3.:13i.1 -F1 i• H 11,1'..7 3,:400.:47 Depara,:l of Ten s parl euc•• Stale ca Culuadc 4201 E :•r a•r.x. A.c- f.en,r C:18022221 :P ..3:3.4130.15 loi.i .900:3f . r• mg CatOe C.. LLC L:.nal.= n N!e:n:rg 135:6 Cuunt, lead 25 6 P.a11a.rl e C:? 8•;56.1.89:6. 10E_8 Cuunt; Itcad 2;'-. F alleAre CD 8,551•8i K••7573.?00:20 Rpd .7.:,8 Eowor. L_.. 8301 E a.cr.:.cc A.c- S:r 100 tire== -n.: od W.a e CO S'C111 2691 L . 1"573:tu6.39 - Centlal;;ul_iadg':rd,e r C ..1.+cr C'stncl ::201, ..7 288,31 Caro .,; C 7,0531 755- :! 165.'3:200=50 '•' ...an) 11,-,1 -md Sce11 IK m ioe''; A. .Si=ll 19375 Cnunt, Road 2n f I' atte,' a 0118';13;1-;949 N +0573"200;0& .J .513220':=U9 S•rrd :'wren.; r air, ::aroma_: .,•ad 7,1 gaol: a KO., S Cool Ilse 19619 Count: scan 25 = Paii ,•l e P-'71 E.:351.3329 19.'29 County Road 25 F atte„I e CO 81:55:.3888 a 1.9.7 3L29PC�.1 . FieVfl, :'ora,+ Earan C Llenr.rine Te•9se 1.1 1.1e'an 198C1 Ccunr, Peal 255' ',sue,' e C.L1 801351-179:9 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUILDINGS. NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA. PERMIT AREA = 147-83 AC LEGEND: ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE DITCH LIMITS PERMIT BOUNDARY EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING EXISTING GAS LINE TELEPHONE WATERLINE IRRIGATION FIBER OPTIC ELECTRIC OVERHEAD ELECTRIC SANITARY SEWER MONITOR WELL GAS WELL 0 .92— N n p ry U p r,;" s)O o, - O � = � y O ¢g' 8 3 0 0 � LL O Sweet Valley Pit Pre -Mining Plan Map Central Colorado Water Conservancy District REVISIONS U 0 2 Job# 22009 Dace 03.25.24 Drawn By TWT Designed By TWT Checked By JCY Fue JT-Mining Plan scale As Shown Sheet: Of: 1 3 P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 2 -Mining Plan, 3/28/2024 2:52:51 PM I� %W N91 (BEDROCK ONLY) II+ ■- LEGEND: �� ,— ----_ �— _—------------��sL—�---� - - ■iif� >M �� 1 N f �> WCR 42 JT-SW-N-3 (BLOW COUNTS) JT-SW-N-2 (PACKER) A d- JT-B1 AJT-SW4St6 jBLOW COUNT SCREENING 48' WIDE X 8' 3H:1V SIDE SLOPES 5 BERM TALL DIRECTION OF MINING 4753 DEWATERING TRENCH 4754 30' WIDE ACCESS ROAD PHASE 1/1A MINING CELL ��s 'SCREENING BERM 48' WIDE X 8' TALL 3H:1V SIDE SLOPES mms o ■ ■ EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL —® TRAFFIC DIRECTION NOTE: PERMIT AREA = 147.83 AC NORTH CELL MINING AREA = 32.42 AC A:3 (PACKER) NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL I P ,•I Y -II -N-8 (BLOW COUNTS) �/ / �' I. III i I f III /j III LOT B RE -3144 100 50 0 I °) t �j L 1 I I I I b I 1 II b — ----- __ 1 NORTH CELL: PHASE 1/1A MINING PLAN MAP i j CLEAR WATER POND WET PROCESSING PLANT II 1 I 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET VARIES 15' PERMIT BOUNDARY i PRODUCT STOCKPILE AREA MINING LIMIT SLURRY WALL CAP it JT-MW2� ! *Ili N Et I U I � II I TOPSOIL / OVERBURDENS SLURRY WALL�� NATIVE MATERIAL BEDROCK 1 _ L 4 J 3 /N P TYPICAL MINING SECTION DEWATERING TRENCH 53' TO 59' 5'h- 5 0 2, N U S) O c4 o 0 � y ¢ o O N Q oM •� 3 c � a ; 3 0 0 LL O Sweet Valley Pit N U w North Cell: Phase 1/1A Mining Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 2 Job# 22009 Dale 03.25.24 Dmwn By Designed By Checked By Fue JT-Mining Plan Scale TWT TWT JCY As Shown Sheet: Of: 2 3 N.T.S. P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining Plan\JT-Mining Plan.dwg, 3 -Mining Plan, 3/28/2024 2:53:17 PM W -S-4 (BEDROCK ONLY) MATCHLINE JT-SW-S-5 (BLOW COUNTS) JT-SW-S-6 (PACKER) �� JT-SW-5=7-(BED' * ► LY) r // I t- \��!® Z Id / I I / � � �� ,�� I / // I �* / N.��.. i� b b j � N , \--„,,,,,,_____..____..„ i.', ' I i II PHASE 2/2A DIRECTION j �� - �. MINING CELL OF MINING JT'.W- - �0W i ' CO I: 4757 � ▪ d �� W I I all T -SW -S-3 (PACKER) 111��ii DEWATERING TRENCH b b � -- -- ¢: w Q I di i I I I `-- EMPLOYEEKING VISITOR PAR SCALE & SCALE HOUSE T -SW -S-2 (BLOW COUNTS) PRODUCT STOCKPILE AREA Y PROCESSING PLANT d i"-- TOPSOIL STOCKPILE — is , \ AREA --- r I d — -- --�-- JT M�3:1 J I ' :I ir4 I I ,I I ti f' lI �� SCREENING BERM i 48 WIDE X 8 TALL I _ SOUTH CELL I 30 WIDE ACCESS ROAD „ 3H 1V SIDE SLOPES MINING LIMITS I s f,% : I SOUTH CELL d 1- ' ,, I � SLURRY WALL I ,. / �� , �, �`� I JT-SW_S-12 (PACKER) - JT-SW S 11 (BLOW COUNTS) i j � �'� -S 13 (BLOW COUNTS OJT �-Q BAD OCK ONLY) i EL ll INeuyr i � /��i � � �. MM., -- �_� _ _ - _,_-_ �_---------�---------�-� ,c �I ft,/- Iii �- a -�- o-_ _ r mss_—OF---- oE--�E----oE-- I-aE-- --�E— Mia4750 I I �� I PERMIT BOUNDARY I MINE ENTRANCE I I. I i i LEGEND: EXISTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS ■ PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE LIMITS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION PERMIT AREA = 147.83 AC SOUTH CELL MINING AREA = 40.11 AC SOUTH CELL: PHASE 2/2A MINING PLAN MAP VARIES 100 50 0 100 200 300 PROPERTY/PERMIT BOUNDARY SCALE IN FEET TOPSOIL / OVERBURDENS SLURRY WALL -55,, NATIVE MATERIAL BEDROCK MINING LIMIT SLURRY WALL CAP L - 4' J TYPICAL MINING SECTION DEWATERING TRENCH 57' TO 66 Job N 22009 Dace 03.25.24 Drawn By TWT Designee By TWT Checked By JCY File JT-Mining Plan Scale As Shown Sheet: Of: EXHIBIT D Mining Plan Mining Limits Central Colorado Water Conservancy District (CCWCD) proposes to mine the land located in the Northeast % of Section 30, Township 4 North, Range 66 West of the 6t" Principal Meridian, in Weld County, Colorado. The proposed mining site is located adjacent to WCR 42 on the north side, WCR 25.5 on the west side, and CO Hwy 60 on the east side. WCR 40 is approximately 2,630 feet to the south of the permit boundary. Access to the site will be located on the south side of the permit boundary and approximately 1,311 feet west of CO Hwy 60 and 1,285 feet east of WCR 25.5. The dominant land use surrounding the property is agricultural. The permit boundary will encompass approximately 147.83 acres which will all be affected acreage, and approximately 72.53 acres being mined. The remaining area will consist of access roads and disturbed land (processing areas, stockpiles, etc.). The following table depicts the different affected acreage: Affected Acreage Mining Plan Area (acres) Mined Area (North Cell) 32.42 Mined Area (South Cell) 40.11 Access Roads (North Cell) 2.11 Access Roads (South Cell) 2.43 Western Mutual Ditch 2.62 Existing Gravel Roads and Structures 6.22 Disturbed Land 61.92 TOTAL 147.83 Various setbacks from adjacent roads, adjacent structures, and oil and gas infrastructure will be maintained as mining occurs. All setbacks specified in the surface use agreements with the oil/gas companies will be followed. The final executed agreements are expected to be obtained in the near future and will be forwarded to the Division when they are available. A minimum 200 - foot setback from any existing oil/gas facility will be maintained until that time. See Exhibit C, Mining Plan Map, and the Slope Stability Report for the mining limit configuration and information on setbacks and their locations. The abandoned wells would be cutoff after mining has reached the bedrock surface or the reclaimed slope surface where a new cap and any additional concrete for the existing plug would be needed. Petroleum Development Corporation (PDC) is the leaseholder and operator of the existing abandoned wells. Discussions with PDC have indicated they would cut down the existing casings as mining occurs. We have also worked with McCarty Engineering, LLC to provide this service at other mining permit locations for other operators. If PDC does not want to perform this work then McCarty Engineering, LLC Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application would be contacted to do it. They are licensed and bonded to obtain approvals from the COGCC to do these types of re -plug services on abandoned oil and gas wells. Products Sand and gravel will be the primary product produced from the Sweet Valley Pit. The principal intended use for the sand and gravel is for road base and construction aggregates. Subsurface drilling and testing have verified that the Sweet Valley Pit property contains a significant commercial deposit of sand and gravel. The depth of interbedded sandy clays and overburden at the surface ranges from 0 to 7.5 feet. The thickness of the aggregate material ranges from 49 to 68 feet where bedrock contact occurs. Mining Methods The deposit will be dry mined during Phase 1a and 2a and after a slurry wall is constructed around the perimeter of the mining area for Phase 1 and Phase 2. Mining will not expose groundwater prior to the slurry wall being constructed for Phase 1a and Phase 2a. Design specifications for the slurry wall and quality control procedures used during construction will ensure that the reclaimed reservoir meets State Engineer's Office (SEO) performance standards. Dewatering trenches will be excavated around the perimeter of the mining area prior to mining operations commencing. The depth of the ditches will vary as the mining progresses deeper into the alluvium in order to maintain the groundwater level below the bottom of the active mining surface, and therefore minimize the exposed groundwater surface area. The dewatering ditches will flow to a collection pond, from which the water will be pumped where it will either be used for processing and dust control water or where it will be discharged to eventually reach the South Platte River. The equipment and facilities may include, but are not limited to the following: Scaling Equipment A scale house and scale will be used to weigh trucks and product leaving the pit. The dimensions of the scale house are 40' x 12' and the scale will be 70' by 10'. The scale house will be founded on typical trailer type jacks and tiedowns on top of concrete pads with minimal rebar to provide reinforcement. The scale will also be founded on concrete pads with reinforcement where load cells are located for the scale. These foundations would be removed once the pit is fully mined. Processing Equipment Screens, wash plant, crusher, conveyors, stackers, and other miscellaneous processing equipment. All processing equipment will be mobile and temporary without fixed foundations. Washing will occur at the wash plant and excess water from the washing will be recycled to the wash water ponds within the processing area, there will be a sedimentation pond that will receive the excess water first and then and overflow from the sedimentation pond to the clear water pond for re -using the water and pumping back to the wash plant. Earth Moving Equipment Dozers, loaders, scrapers, excavators, and compactors will be used for mining and earth moving operations. Haul Roads and Access Roads Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Haul roads will be graded and constructed using the existing pit run where needed outside the processing area in order to move material from the mine using haul trucks, loaders, or scrapers. These roads will be mined and removed as the mining is completed. Access roads to the processing plant will be constructed with aggregates made at the site where the entrance to the permit boundary is located to the scale house and through the scaling area until the access reaches the stockpile locations. The roads around the stockpiles will be constructed from the existing pit run similar to the haul roads. Miscellaneous Equipment Dewatering pumps, electrical trailer, generator trailer, small portable generators and watering trucks will be used as needed. As mining progresses, topsoil and overburden will be stripped to expose the aggregate product below. Topsoil will be stripped and salvaged from areas where overburden material will be stockpiled. All soil and overburden material will be used on -site for reclamation; so long-term stockpiling of these materials is not anticipated. Overburden stockpiles will be located within the permit boundary. See the attached mining plan in Exhibit C for the stockpile locations. Mining of the aggregate will progress down to the underlying bedrock. Since reclamation will occur concurrently with mining, it is not anticipated that overburden material will be stockpiled long-term prior to use in production of road base. During mining, the face will have a 3H:1V slope to bedrock or the bottom of the future reclaimed reservoir and the reclamation slope will be the same 3H:1V slope (i.e. the reclaimed slope will be completed as mining occurs). The processed aggregate material will be temporarily stockpiled near the portable processing plant. The operator may import materials from off -site locations and export materials to other sites. The applicant and/or operator recognize that per Rule 3.1.5(9) of the Construction Material Rules and Regulations that if imported materials are used as backfill there must be documentation that is notarized and provided to the Division stating materials are inert. The applicant/operator will provide documentation to the Division if off -site materials are going to be used at the time of reclamation. Recommendations for monitoring of slope stability, including, conducting a visual inspection of the excavated slopes on a weekly basis for the duration of mining, conducting a visual inspection after a major precipitation event that has saturated the ground using the same procedures, contacting qualified personnel to evaluate and recommend remediation work to stabilize the area in the event a visual inspection detects signs of potential slope failure, and if no visible signs of slope failure are detected during mining, reducing visual inspections to once every six months after mining completion, or after every major precipitation event. All local, State, and Federal rules and regulations will be followed for the storage and handling of any fuel for the facilities. Topsoil Handling Plan As stated previously the topsoil will be stripped to expose the aggregate product underlying the topsoil. The topsoil will be stripped using scrapers and stockpiled in the topsoil stockpile area as depicted in Exhibit C. Topsoil will be stripped and salvaged from areas where overburden material will be stockpiled. The volume of topsoil is approximately 170,000 cubic yards. The depth of the topsoil is approximately twelve inches over the majority of the mining area. The Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application topsoil will be stripped and stockpiled prior to mining operations. The height of the topsoil stockpiles will be approximately 35 feet. Mine Phasing CCWCD anticipates mining and reclaiming the 32.42 -acre Phase 1a and Phase 1 North cell and the 40.11 -acre Phase 2a and Phase 2 South cell for the Sweet Valley Pit progressing as shown on the Mining Plan Map. The overall time required to complete the mining and reclamation is estimated to be 11 years and 8 months based on an average rate of 650,000 tons per year. The initial production is expected to be 300,000 tons per year with the maximum production expected to be 1,000,000 tons per year. However, it is possible that due to demand fluctuations, mining could progress slower than anticipated and additional time may be required for mining and reclamation of the site. The mining will progress beginning with the Phase 1a cell at the outer edge where material will be moved toward the interior such that the mining slope can be established. The Phase 1a cell mining slope will be established for the entire perimeter in 3 to 6 feet intervals then when groundwater is exposed after the slurry wall construction the same process will occur for Phase 1. Once the mining of the Phase 1a and Phase 1 cell is completed, mining of the Phase 2a and Phase 2 cell will begin by mining the outer edge where material will be moved toward the interior such that the mining slope can be established. The Phase 2a cell mining slope will be established for the entire perimeter in 3 to 6 feet intervals then when groundwater is exposed after the slurry wall construction the same process will occur for Phase 2. Dewatering Dewatering trenches will be placed along the perimeter of each mining area. The dewatering trench around the perimeter of each cell being mined will be placed at the toe of the mining slope. As the cell is mined deeper the dewatering trench will be lowered and moved laterally along the mining slope toward the center of that cell. Slurry walls are anticipated to be installed around the perimeter of each cell prior to exposing groundwater and mining will continue to commence in those cells. It is expected that minimal dewatering will be required after the slurry walls are installed due to the slurry walls cutting off groundwater infiltration into the cells. CCWCD will have an approved substitute water supply plan and well permit prior to exposing groundwater. The substitute supply plan will be updated annually to account for water that is consumed due to exposing groundwater by the mining operation. Explosives Explosives will not be used during mining. Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT E Reclamation Plan Lined water storage reservoirs will be the final reclaimed use for the Sweet Valley Pit where it will become the Sweet Valley Reservoir Complex. Portions of mining area will be reclaimed as "native" areas, which will be re -seeded with native vegetation. The mining areas will be reclaimed as water storage reservoirs. The remaining area within the proposed permit boundary will consist of reservoir shoreline, unimproved access roads around the reservoirs, and reclaimed vegetated land. Final Land Use Reclamation Plan Area (acres) Reservoir Water Surface (North Cell) 32.23 Reservoir Water Surface (South Cell) 40.10 Access Roads (North Cell) 2.11 Access Roads (South Cell) 2.42 Reclaimed Vegetated Land (Disturbed Land and Slopes above Reservoir Water Surface) (North Cell) 7.80 Western Mutual Ditch 2.62 Existing Gravel Roads and Structures 6.22 Reclaimed Vegetated Land (Disturbed Land and Slopes above Reservoir Water Surface) (South Cell) 12.67 Reclaimed Vegetated Land (Disturbed Land for Processing Area and Stockpiles) 41.66 TOTAL 147.83 Water Storage Reservoir In general, the mining limits will be mined down to the claystone/sandstone bedrock. The relatively impermeable bedrock will make the bottom of the reservoir. The reservoir will be separated from the surrounding alluvial aquifer by the slurry wall liner system as detailed in the cross-section shown on the Reclamation Plan Map. The slurry wall liner will be keyed into the bedrock material and extend upward through the height of the alluvium to three feet above the reclaimed normal water surface elevation. Design specifications and quality control procedures used during the construction of the slurry wall liner will ensure that the reservoir meets the State Engineer's Office (SEO) performance standards for permeability. All reservoir slopes will be reclaimed to 3H:1V final grade. The cells will be mined at 3H:1V slopes. As the mining progresses, the final 3H:1V reclamation slopes will be shaped using a dozer. Final reclamation by capping with topsoil and re -vegetating above the expected reservoir water level will follow grading operations as well as backfilled areas that will not be haul/access roads to minimize the amount of disturbance at any one time. Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Recommendations for monitoring of slope stability, including, conducting a visual inspection of the excavated slopes on a weekly basis for the duration of mining, conducting a visual inspection after a major precipitation event that has saturated the ground using the same procedures, contacting qualified personnel to evaluate and recommend remediation work to stabilize the area in the event a visual inspection detects signs of potential slope failure, and if no visible signs of slope failure are detected during mining, reducing visual inspections to once every six months after mining completion, or after every major precipitation event. During reclamation activities, inlet and outlet facilities for the reservoir will be designed and installed once the operational criteria of the proposed reservoir have been identified by an end user. Reclamation Measures/Materials Handling Backfilling will be done to provide stabilized shorelines around the reservoir and to minimize erosion. The backfill material will consist of gravel and topsoil. There will not be known toxic or hazardous materials in the backfill material. Additionally, it is not likely that acid forming or toxic materials will be encountered during mining. The mining will not leave high walls on the property. In addition, there will be no auger holes, excavations, or shafts left on the property. The auger holes for the gravel investigation were backfilled with native gravel and soil cuttings from the drilling. The auger holes that were not backfilled were the four monitor wells that were constructed and permitted as permanent monitoring wells to monitor groundwater at the north, east, west, and south sides of the permit boundary. Monitor wells will remain on the property so the end user may continue to monitor levels of the groundwater elevations. Topsoil will be placed to finalize the grading such that seeding can occur. The topsoil will be placed at all disturbed areas and on the mining slope to an elevation matching the expected reservoir water level. Topsoilinq Approximately the top twelve inches of soil on the property is classified as topsoil. This layer includes the root zone of grasses and crops, which will be stripped and stockpiled separately. Topsoil will be re -handled as little as possible and a Technical Revision will be submitted prior to re -locating topsoil stockpiles. By using concurrent reclamation techniques, the topsoil is not expected to remain in stockpiles for more than one to five years. If the stockpile remains more than one growing season, it will be seeded with a fast-growing vegetative cover to prevent erosion. All topsoil will be retained on -site to reclaim the reservoir shoreline, and other areas disturbed by mining activities. Where required, topsoil will be replaced to a depth of twelve inches. Prior to placing topsoil uneven areas and low spots will be graded to subgrade elevation, in addition debris, roots, branches, stones, in excess of 2 inch in size will be removed. Scarify surface to depth of 8 inches where topsoil is to be placed for a roughened condition to assist in eliminating erosion. Scarify/cultivate in areas where equipment used for hauling and spreading topsoil has compacted subsoil. Place topsoil during dry weather and on dry unfrozen subgrade. Remove vegetable matter and foreign non -organic material from topsoil while spreading. Grade topsoil to eliminate rough, low or soft areas. Revegetation As mining operations are completed, areas for reclamation will be graded and shaped for revegetation. Runoff or excess water from adjacent areas will not be allowed to flow over slopes Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application being graded and seeded. If needed, berms or channels will be constructed to divert excess water and convey it in a safe and non -erosive manner. For disturbed areas, the reclamation plan includes re -vegetating with appropriate seed mixes to minimize erosion and re-establish natural terrain. A proper seedbed is firm and free of competing vegetation. Correct firmness is when an adult footprint is only slightly visible on the prepared bed prior to the seeding operation. The seedbed can be firmed, if needed, by pulling a commercial or homemade packer or roller. A firm seedbed is essential for proper seeding depth prior to using the mechanical seeder or broadcasting seed. Apply seed evenly in two intersecting directions. Rake in lightly. Apply seed at the vendor's recommended bulk seed rate/acre according to the quantity of PLS contained in their bulk seed to achieve the specified PLS/acre rate utilizing a mechanical seeder. Where access is limited and seed is applied by hand broadcasting, apply the seed mix at twice the PLS rate per acre and rake in once broadcasting in completed. Do not seed areas in excess of that which can be mulched on same day. Do not sow immediately following rain, when ground is too dry, or when winds are over 10 mph. Immediately following seeding, apply mulch to thickness of 1/4 inch. The seed mixture below was selected as recommended by the DRMS for this climate zone (Dryland Quick Establishment, elevation less than 8,000 feet). Reservoir side slopes below the anticipated reservoir water level will not be seeded. The proposed seed mix is shown in the following table. Reclamation and Temporary Stockpile Seed Mix Seed Mix Species Scientific Name Application Rate (#PLS/acre) Grasses Intermediate Wheatgrass Thinopyrum intermedium 2.50 Slender Wheatgrass Elymus trachycaulus, 2.00 Pubescent Wheatgrass Thinopyrum intermedium 3.00 Russian Wildrye Psathyrostachys juncea 3.00 Western Wheatgrass Pascoprum smithii 2.00 Sand Dropseed Sporobolus cryptandrus 0.25 *Application rate is for drilling the seed. If seed is to be broadcast, the application rate will be doubled. The seed mix for final reclamation as described above does not require fertilizer per the information provided by the DRMS. The seeded areas will be covered with dead crop litter from sorghum or milo crop forage, or with straw mulch at a rate of 2,000 pounds per acre. Ideal seeding dates for Colorado are November 1 to May 1, when the soil is not frozen. Grasses should be seeded when soil moisture and temperature are optimum for germination. Grasses are designated either "cool" or "warm" season based on their growth cycle. Cool -season grasses can be planted when temperatures are cooler and day lengths are short. Warm -season grasses need warmer temperatures and longer day lengths to grow. Refer to Weld County's seeding recommendations as a resource for time frames outside of the ideal seeding times at www.weld.gov/Government/Departments/Public-Works/Weed-Management/Controlling- Weeds/Reseeding. Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application If a significant invasion of noxious weeds occurs after seeding, the weeds will be mowed before they can go to seed. The areas will be mowed periodically for additional control as needed. Mechanical control will be used as a first priority. Chemical methods will only be used if no other alternative produces acceptable results. See Exhibit J for specifics of the weed control plan. For temporary earthen stockpiles, the reclamation plan includes re -vegetating with appropriate seed mixes to minimize erosion and establish more rapidly to stabilize the stockpiles. If a temporary earthen stockpile remains more than one growing season, it will be seeded with the seed mix above to prevent erosion. Water — General Requirement To minimize the effect on the prevailing hydrologic balance, CCWCD will: a. Comply with all applicable Colorado water laws. b. Comply with all applicable Federal and State water quality laws and regulations. c. Comply with all Federal and State requirements for dredge and fill. d. Re -grade and backfill all sediment and siltation structures after mining is completed. e. Monitor groundwater levels adjacent to the site and mitigate any damage to adjacent wells that dewatering activities may have. (See Exhibit G) Groundwater — Specific Requirements The operation will not affect groundwater quality on or off the site. The operation will comply with State groundwater quality standards. The mining and reclamation may affect the groundwater table surrounding the mine site. The proposed mitigation efforts to minimize these impacts are ditches in necessary areas to maintain groundwater levels during the mining, and dewatering wells or a perimeter drain if needed to convey groundwater around the lined reservoir after the pit side liner is installed. A ground water model by McGrane Water Engineering, LLC has also been provided and the results indicate that water levels will be affected by +1 to +3.5 ft without mitigation measures and with mitigation measures there is not any mounding occurring that affects any wells by using dewatering wells to manage the mounding. On the shadow side (north) of the slurry wall there would be a drop of 3.5 feet adjacent to the wall, however there are other gravel mines for Monarch and Section 20 that have been approved and the wells within the predicted water level change are all within their mining areas so the overall impact of the slurry walls will be insignificant. CCWCD proposes that they monitor groundwater levels through monitoring wells that they have installed, or have access to before, during, and after the mining and reclamation is complete so that impacts to the groundwater table, from this mining operation, can be identified and addressed. It is the intent of CCWCD to operate responsibly and to mitigate any damage to wells that is directly attributable to the mining and reclamation of this site. Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Reclamation — Approximate Time Table The initial proposed rate of production for the mine is 300,000 tons per year and the maximum proposed rate of production for the mine is 1,000,000 tons per year. The total time frame to mine all phases assuming an average production rate of 650,000 tons per year is approximately 11 years and 8 months. The following table shows the approximate time frame to finish each phase of mining assuming an average production rate of 650,000 tons per year: Mining Cell Acreage Time Frame to Complete and Reclaim Phase Phase 1a (Includes Processing and Stockpile Areas) 83.56 1 Year for Mining 1 Year at End of Mining for Processing and Stockpile Area Reclamation Phase 1 Same as Phase 1a 3 Years, 7 Months Phase 2a 50.51 1 Year Phase 2 Same as Phase 2a 5 Years, 1 Month Totals 134.07 11 years, 8 months The assumed annual production rate is 300,000 tons initially to 1,000,000 tons maximum for processed material leaving the mine each year. The size and area of reclamation varies but generally consists of the outside mining slope being maintained as the 3H:1V reclaimed slope. For more information on sequencing and size of the reclamation activities refer to Exhibit L financial warranty calculations. Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT F Reclamation Plan Map See attached maps. �lir Consulting, Inc. ' Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application i cc U I 1 -I LEGEND: 4630 JT-MWNi ,,- ■ ■ 4700 H 4710 4705 4715 4720 4725 4730 4735 47y4 PHASFQ 1, RECLAIMED NORTH RESERVOIR TOP ELEV = 4756' NORMAL LATER SURFACE ELEVATION = 4754' NORMAL WATER SURFACE AREA = 32.23 AC WATER STORAGE VOLUME = 1494.34 AC -FT r]s 4745 4740 4753 4750 4755 4745 4740 EXISTING CONTOURS PROPOSED CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING SANITARY SEWER 4735 4730 4725 4720 4715 4710 NORTH CELL SLURRY WALL I// TI / /17/ / / / i i /7 ///// / j� 4700 II I / .i / 'II // / _'/ / mad 3yI i" 4755 4705 M -M fai ■i ,0 4D WCR 42 20' WIDE ACCESS ROAD NORTH CELL MINING LIMITS // MATCHLINE NORTH CELL: PHASE 1 RECLAMATION PLAN MAP 100 50 0 100 200 300 I SCALE IN FEET PROPERTY/PERMIT BOUNDARY TOPSOIL / OVERBURDENS GRAVEL ACCESS ROAD VARIES �20'� 15' I MINING LIMIT PERIMETER BERM V 7 WATFR SUREBCE—ELFVATION = 4754' I 0' TO 6' SLURRY WALL NATIVE MATERIAL BEDROCK L 4' R A 0 C P 53' TO 59' 6 a 0 =i 2 N ii (4) O N E SI . cO ry Eprgo m cn = E Fn U� M= • �0� Cm) ii 09E C J a 3 Fl O o L L _ c,, • 1•a Sweet Valley Pit W North Cell: Phase 1 Reclamation Plan Map Central Colorado Water Concervancy District REVISIONS 0 U m 0 z° Job# 22009 Dace 03.08.24 Drawn By TWT Designee By TWT Checked By JCY Fue JT-Mining Plan Scale As Shown MONITOR WELL & SOIL BORING GAS WELL TYPICAL RECLAMATION SECTION N.T.S. Sheet: Of: 1 4 1 I 755 4700 4725 \ 4720 \ 4715 \ 4710 4705 4730 4735 4740 4745 4750 v PHASE 2: RECLAIMED SOUTH RESERVOIR TOP ELEV = 4761' NORMAL WATER SURFACE ELEVATION = 4759' NORMAL WATER SURFACE AREA = 40.10 AC WATER STRRAGE VOLUME = 2054.60 AC —FT 60 9 4757 4750 4745 4740 4725 4720 4715 4710 4705 4700 L-- --------- _ 20' WIDE ACCESS ----- ROAD 4695 4730 II 4735 J� I/ 1 g% II I I / _ -1 v/i, 1 SOUTH CELL MINING LIMITS SOUTH CELL SLURRY WALL 20' WIDE ACCESS ROAD 0 JT-MW3 i 1� 2 N Io U T if■if■if�if■if■ifI■if■if■�f■i■■ff■if■ff■if■if■if■if■ff■if i■if■if■f■if■if��fC■■f■•i ff fff if■�■if■if■�■if■if�if■if■i■f■if■i� Tf f 67tv 4750 i! Ili •� I III � I I I LEGEND: 4630 ■ • EXISTING CONTOURS PROPOSED CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING SANITARY SEWER SOUTH CELL: PHASE 2 RECLAMATION PLAN MAP 100 50 0 100 200 300 I SCALE IN FEET PROPERTY/PERMIT BOUNDARY VARIES 20' J TOPSOIL TOPSOIL / OVERBURDENS SLURRY WALL GRAVEL ACCESS ROAD NATIVE MATERIAL BEDROCK L 15' MINING LIMIT PERIMETER BERM TOP ELEVATION = 4761 WATER SURFACE ELEVATION = 4759 R Mq N P 0' TO 6' 57' TO 68' 6 = •I a = N •••i (/) O E ^I N . co c,.1 gprgo m E F� U� • Q gr o OO �aM U C J a 3 [■■I O o 04 ,O LL R Sweet Valley Pit South Cell: Phase 2 Reclamation Plan Map Central Colorado Water Concervancy District REVISIONS 0 U m 0 z° Job# 22009 Dace 03.08.24 Drawn By TWT Designee By TWT Checked By JCY Fue JT-Mining Plan MONITOR WELL & SOIL BORING GAS WELL TYPICAL RECLAMATION SECTION Scale As Shown Sheet: Of: 2 4 4630 JT-MWIr d- M-■ 2 4700 4705 4710 4735 4740 4745 775C1- 47 54 PHASE 1: RECLAIMED NORTH RESERVOIR -�. TOP ELEV = 4756' NORMAL N-4TER SURFACE ELEVATION = 4754' NORMAL WATER SURFACE AREA = 3223 AC WATER STORAGE VOLUME = 1494-34 AC -FT 4753 4755 4750 4745 4740 4735 4730 4725 4720 4715 4710 4705 4700 a ■ • EXISTING CONTOURS PROPOSED CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING SANITARY SEWER SEEDING AREA NOTE: 'S2 ALL DISTURBED AREAS OUTSIDE OF THE WATER SURFACE WILL BE SEEDED AND MULCHED, WITH THE EXCEPTION THE ACCESS ROAD, WHICH WILL BE GRAVEL SURFACED. RECLAIMED AREA TABULATION: 100 50 20' WIDE ACCESS ROAD NORTH CELL MINING LIMITS NORTH CELL SLURRY WALL 0 LOT B RE -3104 MATCHLINE 100 200 300 I SCALE IN FEET NORTH CELL: PHASE 1 SEEDING PLAN MAP JT-MW2 I WCR 27 % HWY 60 I 6 y= VJ/ ❑ = N tI co p N E S ' co N J O N m con EU� ¢'=M F� o p s 0 U3 M C J a 3 F ❑ O • o Sweet Valley Pit North Cell: Phase 1 Seeding Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 z° Job# 22009 Dace 03.08.24 Drawn By TWT Designee By TWT Checked By JCY Fue JT-Mining Plan MONITOR WELL GAS WELL NORTH CELL WATER SURFACE AREA = 3223 AC NORTH CELL SCARIFY, TOPSOIL, SEEDING AREA = 756 AC GRAVEL ACCESS ROAD = 2-11 AC TOTAL AREA = 41.90 AC Scale As Shown Sheet: Of: 3 4 IY U i Yf �00' /00 4 4745 750 4725 4730 4735 4740 -4755 4720 47,5 � 10 i 47 4705 4700 \\ MATCHLINE i -- -- -- 1-44. PHASE 2: RECLAIMED SOUTH RESERVOIR TOP ELEV = 4761' NORMAL WATER SURFACE ELEVATION = 4759' NORMAL WATER SURFACE AREA = 40.10 AC WATER STRAGE VOLUME = 2054.60 AC -FT 45, X60 4757 4725 4720 4715 47 0 4705 4700 4695 20' WIDE ACCESS ROAD t 1 ❑1 1 I I SOUTH CELL SLURRY WALL I y� I SOUTH CELL MINING LIMITS /f 20 WIDE ACCESS ROAD �} 1 1 1 1 I d 1 4730 4735 \ 4740 � 1 4745 r 1 „A 4750 4760_ 4755 EX TING ---------------- 1 1�- --------�---�— -- 47±,9 LEGEND: 4630 ■ ■ EXISTING CONTOURS PROPOSED CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY LINE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC EXISTING SANITARY SEWER SEEDING AREA MONITOR WELL NOTE: ALL DISTURBED AREAS OUTSIDE OF THE WATER SURFACE WILL BE SEEDED AND MULCHED, WITH THE EXCEPTION THE ACCESS ROAD, WHICH WILL BE GRAVEL SURFACED. RECLAIMED AREA TABULATION: 2 JT-MW3 oil 21 �i iMi-E-f ■-M-f Mi-f Mi-f MU- Mi-f Mi-f I•i-f Mi-f M- -M-H Mi-M- SOUTH CELL: PHASE 2 SEEDING PLAN MAP 100 50 0 100 200 300 I SCALE IN FEET u 6 = a 0 = N •••i (1) O E ^I N . co N gprgo m EU` 0 Q g M c°'' Q o Co) � aM� C J a 3 FI O o 04 oi-L Sweet Valley Pit South Cell: Phase 2 Seeding Plan Map Central Colorado Water Concervancy District REVISIONS U m 0 z° Job# 22009 Dace 03.08.24 Drawn By TWT Designee By TWT Checked By JCY Fue JT-Mining Plan GAS WELL SOUTH CELL WATER SURFACE AREA = 40.10 AC SOUTH CELL SCARIFY, TOPSOIL, SEEDING AREA = 52.48 AC GRAVEL ACCESS ROAD = 2.43 AC TOTAL AREA = 85.01 AC Scale As Shown Sheet: Of: 4 4 EXHIBIT G Water Information Introduction The Sweet Valley Pit mining site is I located in the Northeast % of Section 30, Township 4 North, Range 66 West of the 6t" Principal Meridian, in Weld County, Colorado. The proposed mining site is located adjacent to WCR 42 on the north side, WCR 25.5 on the west side, and CO Hwy 60 on the east side. WCR 40 is approximately 2,630 feet to the south of the permit boundary. Access to the site will be located on the south side of the permit boundary and approximately 1,311 feet west of CO Hwy 60 and 1,285 feet east of WCR 25.5. The dominant land use surrounding the property is agricultural. The operation will consist of sand and gravel production and will not impact the South Platte River in the form of depletions due to a slurry wall that will be installed prior to mining below exposed groundwater. Mining of the Sweet Valley Pit site will last for approximately 11 years and 8 months. Once reclamation is complete, the water storage reservoirs will be called the Sweet Valley Reservoir Complex with a total of two reservoirs. The north reservoir will have a water surface area of 32.42 acres and the south reservoir will have a water surface area of 40.10 acres. The depth to groundwater ranges from 13 to 18 feet seasonally within the permit boundary (measured in Existing MW, and MW -1 through MW -3, See the attached piezometer measurements table). The site will be mined down to a depth of 49 to 68 feet thus exposing groundwater to the atmosphere. This exposed groundwater, along with the operational losses associated with the extraction of sand and gravel deposits, will impact the South Platte alluvial aquifer. These impacts will cause river depletions that must be augmented. Groundwater will be exposed during the mining once the mining depths reach an elevation of approximately 4749 feet on the south side of the property and an elevation of approximately 4739 feet on the north side. To enable dry mining at the Sweet Valley Pit mining site, there will be dewatering trenches around the bottom of the mining slope. These dewatering trenches will change in length throughout mining. The maximum length will occur when the north or south cell is completely mined, concurrently with reclamation since the mining slope is the same as the reclaimed slope. The maximum size of dewatering trench will be 0.75 acres of exposed surface area. The water will flow from the dewatering ditch to a small pond at the end of the dewatering ditch from which the water will be pumped where it will either be used for processing and dust control water or where it will be discharged to eventually reach the South Platte River. As mining progresses, the dewatering trenches will shift to account for additional groundwater being exposed. The gravel pit will have slurry wall liners for Phase 1 and Phase 2 constructed prior to exposing groundwater. Water Requirements Water use at the Sweet Valley Pit mining site will include evaporation from exposed groundwater, dust control of haul roads and stockpiles, water for the wash plant (i.e. wash screen for concrete rock and sand) and water retained in material removed from the site. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Evaporative Loss Evaporative losses are dependent on the exposed water surface area, which may shift throughout the mining operation, but will not exceed the maximum. Exposed surface area at the Sweet Valley Pit mining site will include groundwater exposed in the dewatering trenches. The maximum exposed surface area at the site during mining is estimated at 0.75 acres. CCWCD plans to keep the site dewatered throughout the life of the mine. Evaporation data was taken from NOAA Technical Report NWS 33, Evaporation Atlas for the 48 Contiguous United States. The annual gross evaporation was determined to be 45 inches for this location. Monthly evaporation percentages are established by guidelines set by the State Engineer's Office. To determine precipitation, data from the National Weather Service for Greeley, CO (UNC) (1967-2023) was used. The long-term average precipitation at the Sweet Valley Pit mining site is estimated at 14.26 inches. Effective precipitation is calculated as 70`)/0 of the total precipitation. The net evaporation is the difference between gross annual evaporation and effective precipitation. The resulting net evaporation is 35.02 inches or 2.92 feet. The maximum annual evaporative loss from the 0.75 acres is 2.19 ac -ft. Operational Loss The average annual production from the Sweet Valley Pit mining site is estimated at 650,000 tons. Using 4% moisture content (2% for moisture in the product and 2`)/0 for water used to wash), the total associated consumptive use for water retained in the material mined and water used for washing the total associated consumptive use for water retained in the material mined is 19.1 ac -ft. Dust control use is 10,000 gal/day, 6 days/week, 4 weeks/month for 10 months of the year. This equates to 7.4 ac -ft. Maximum annual operational loss is estimated to be 26.5 ac -ft. Consumptive Use The maximum annual consumptive use (operational loss + evaporation loss) at this site during the mining operation is estimated to be 28.69 ac -ft. Replacement Water The replacement of consumptive uses at the site will be accounted for in a substitute water supply plan (SWSP) approved by the State Engineer. The SWSP will be obtained prior to any mining activities occurring that expose groundwater. Surrounding Water Rights The attached Figure A-1 Well Permits in the Sweet Valley Pit — Groundwater Evaluation by McGrane Engineering, LLC shows the permitted wells within 600 feet of the mining limits and permitted wells within the boundaries of the groundwater model/evaluation. The well information Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application and locations were obtained from the Division of Water Resources online mapping well permit locator. This well and water rights information was cross checked with the State's CDSS. Between the sources, all permitted and decreed wells are included. Table G-1 below is a corresponding list of wells as numbered in the Sweet Valley Pit — Groundwater Evaluation by McGrane Engineering, LLC that is attached that are within 600 feet of the mining limits and that were within the 1 to 3.5 feet mounding area on the north and south side of the pit. Table G-1 - Permitted and Decreed Wells Within 600 Feet of Mining Limits Area of 1- 3.5 feet mounding and shadowing not owned by CCWCD Map ID Permit No Structure ID Well Name Owner Address City State Zip Code 1 187426-A Domestic Well Gerald J. and Teresa Moran 19801 CR 25.5 Platteville CO 80651 2 54-WCB Domestic Well Castor Hansen Platteville CO 80651 3 58-WCB Domestic Well Krosh & Hansen Platteville CO 80651 4 19924-U WDID 0205532 Breckon Well 4 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 5 19924-W WDID 0205534 Breckon Well 6 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 6 19924 -T -R WDID 0205531 Breckon Well 3 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 7 19924 -V -R WDID 0205533 Breckon Well 5 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 8 19924 -R -R WDID 0206021 Eaton Cattle Well 7 H&S Land & Cattle, LLC (formerly Eaton Cattle) P.O. Box 366 Gilcrest CO 80623 9 11113-R WDID 0206462 Gutfelder Well 11113 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 10 11114-R WDID 0206463 Gutfelder Well 11114 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 11 7165-R WDID 0205355 Benson Well 2 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application 12 23014 Domestic Well Howard Breckon 538 Garfield Denver CO 80202 13 14028-R WDID 0206862 Koehn Well #3 United Water & Sanitation District 3855 Lewiston Street #140 Aurora CO 80011 At the time of SWSP application/approval, a new gravel pit well permit will be applied for/obtained to include the evaporative and operational losses from the property. If the proposed use of groundwater at the Sweet Valley Pit mining site results in material injury to surrounding wells, CCWCD will ensure that all necessary measures are taken to address the issues. Water Quality An NPDES permit will be obtained from the Water Quality Control Division at the Colorado Department of Public Health & Environment for the Sweet Valley Pit mining site prior to discharging any groundwater that is dewatered from the site. This permit will be kept current and amended as necessary to ensure that any water discharged from the site will meet the permitted water quality standards. Impacts to Groundwater/Hydrologic Balance CCWCD will monitor the groundwater levels surrounding the site and provide groundwater mitigation via a groundwater drain or dewatering wells as described in the Groundwater Evaluation. The mitigation measures are provided with the Groundwater Evaluation. Design plans will be provided to the DRMS for the mitigation measures. CCWCD will discharge dewatering flows into existing adjacent irrigation laterals where possible to limit the disturbance to the surrounding land or discharge the dewatering flows via CCWCD's proposed pipeline that discharges directly to the South Platte River. A slurry wall liner is proposed around the Phase 1 and Phase 2 cells. To summarize the mitigation process, as the mining/dewatering occurs, CCWCD will monitor the groundwater levels adjacent to mine as the mining progresses. If groundwater levels drop to a level that prevents an adjacent well from performing acceptably, according to that well's owner, CCWCD will either implement a groundwater recharge ditch/pond near the well in order to raise the groundwater level in the vicinity of the well and hence return it's operation to acceptable standards, or will negotiate an agreement with that well owner to replace the well or provide replacement water via other means until the mining and reclamation activities are concluded but it is not anticipated that any groundwater levels will drop since the slurry wall will be installed prior to exposing groundwater and that mitigation measures to keep groundwater from mounding on the south side of the Phase 2 slurry wall will be in place such that baseline groundwater levels will be maintained to within plus or minus 2 feet. The north side of the Phase 1 slurry wall will be in a shadow area but all of the impacted wells are within the foot print of the approved permit boundaries of the Monarch Mine and the Section 20 Mine. Groundwater wells that are not owned by CCWCD are potentially located within 600 feet of the mining limits. The exact physical location of these wells will be determined during the SWSP and well permit application processes. If wells are found to be within 600 feet of the mining limits, CCWCD will either obtain a well waiver from the owner of the well, or provide an agreement with the well owner that CCWCD will mitigate and material damage to the well that is directly attributable to the mining and reclamation of the site. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application All other wells within 600 feet of the mining limits are either owned by CCWCD or are monitoring wells therefore groundwater impacts to these wells do not need to be addressed. See the attached Piezometer Location Map, and Piezometer Data Summary, which show the locations of monitoring wells around the perimeter of the site that CCWCD has either installed or has access to, and the groundwater level data that has been collected for each well. The groundwater monitoring data will be provided for what has been done to date with this permit application and then submitted in the annual report for the pit to the DRMS after approval of the permit application. Groundwater Quality Monitoring Plan The majority of the mining operations at this site will be within the slurry wall lined area. The areas outside of the slurry wall will be limited to the scale house and haul roads for trucks coming into and out of the pit, and stockpiles, which are not likely to affect groundwater quality. To establish pre -mining groundwater quality at the site CCWCD will have two monitor wells sampled quarterly. The upgradient monitor well that will be sampled is MW -3 and the downgradient monitor well that will be sampled is MW -1. The samples will be taken by a qualified consultant and then tested by SGS Laboratories for the analytes listed in Tables 1-4 of the "Basic Standards for Groundwater." The quarterly sampling will continue until 5 quarters of data has been established. Once the baseline has been established, we would recommend annual sampling to monitor the groundwater quality. The groundwater quality sampling data will be provided for what has been done to date with this permit application/adequacy review and then submitted in the annual report for the pit to the DRMS after approval of the permit application. CCWCD will notify the DRMS within 7 days of receiving a lab report that indicates any of the standards set forth in Tables 1-4 have been exceeded. If a lab report shows an exceedance, a new sample will be taken to verify exceedance or discount potential lab contamination. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Sweet Valley Pit - Monitor Well Readings Well Designation Existing Monitor Well JT MW -1 JT MW -2 JT MW -3 Description Southwest Corner Northwest Corner Northeast Corner Southeast Corner Top of Well Elevation (ft) 4765.11 4754.77 4757.78 4763.64 Ground Elevation (ft) 4762.38 4752.57 4755.56 4761.50 Date Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) October 26, 2023 16.17 13.44 4748.94 November 17, 2023 17.25 14.52 4747.86 17.00 14.80 4737.77 17.96 15.74 4739.82 16.00 13.86 4747.64 December 22, 2023 18.63 15.90 4746.49 18.10 15.90 4736.67 18.83 16.61 4738.95 17.25 15.11 4746.39 January 20, 2024 19.54 16.81 4745.57 18.92 16.72 4735.85 20.00 17.78 4737.78 18.25 16.11 4745.39 February 25, 2024 20.31 17.58 4744.80 19.58 17.38 4735.19 19.92 17.70 4737.86 18.88 16.73 4744.77 March 30, 2024 20.60 17.87 4744.51 19.88 17.67 4734.90 20.77 18.55 4737.01 19.17 17.03 4744.47 Western Ditch Running Western Ditch Running .._- -- ,, _ SGS Engage --- Analysis Crosstab Job:DA60116 Analysis: General Chemistry - SW846 9056A Regulation 41 Table Value Standard Description: Analyte: pH - from field sample information pH Unit: J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT MW -1 DA60116-1 Ground Water 11/17/2023 3:00 PM 7.6 6.5-8.5 J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT MW -1 DA60116-1 F Groundwater Filtered 11/17/2023 3:00 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT MW -3 DA60116-2 Ground Water 11/17/2023 3:20 PM 7.2 6.5-8.5 J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT MW -3 DA60116-2F Groundwater Filtered 11/17/2023 3:20 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -1) DA62542-5 Ground Water 3/1/2024 12:55 PM 7.13 6.5-8.5 J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -1) DA62542-5F Groundwater Filtered 3/1/2024 12:55 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -1) DA62542-5FC Groundwater Filtered 3/1/2024 12:55 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -3) DA62542-6 Ground Water 3/1/2024 1:10 PM 7.11 6.5-8.5 J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -3) DA62542-6F Groundwater Filtered 3/1/2024 1:10 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -3) DA62542-6FC Groundwater Filtered 3/1/2024 1:10 PM Result Comments a Calculated as: (Nitrogen, Nitrate) + (Nitrogen, Nitrite) b Elevated detection limit due to matrix interference. General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Regulation 41 Table Value Standard TDS TDS (mg/L, unless other units Chloride Chloride (mg/L, unless other units Fluoride Flouride (mg/L, unless other units mg/I given) mg/I given) mg/I given) Not Tested 400 148 250 0.77 2 Not Tested 400 161 250 0.94 2 709 400 151 250 1.2 2 723 400 165 250 0.86 2 General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Nitrogen, Nitrate Nitrogen, Nitrate Nitrogen, Nitrate + Nitrite Nitrate + Nitrite as Nitrogen Nitrogen, Nitrite mg/I (mg/L, unless other unitsgiven) mg/I (mg/L, unless other unitsgiven) mg/I 3.7 a 10 3.7 10 0.048 5.4 a 10 5.4 10 <0.0080 3.4 10 3.4 10 <0.040 4 10 4 10 <0.040 Regulation 41 Table Value Standard General Chemistry - SM 2540D-2011 General Chemistry - SW846 9056A Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Nitrogen, Nitrite (mg/L, unless other units Solids, Total Suspended Sulfate Sulfate Dissolved (mg/L, unless other units Aluminum given) mg/I mg/I given) ug/I (1,000 ug/I = 1 mg/L) 1 431 187 250 <100 1 36 207 250 <100 1 Not Taken 188 250 <100 1 Not Taken 193 250 <100 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Aluminum Dissolved Antimony Antimony Dissolved Arsenic Arsenic Dissolved Barium (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) 5 <30 0.006 <25 0.01 67.5 5 <30 0.006 <25 0.01 60.1 5 <30 0.006 <25 0.01 62 5 <30 0.006 <25 0.01 51.3 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Barium Dissolved Beryllium Beryllium Dissolved Boron Boron Dissolved Cadmium (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) 2 <10 0.004 134 0.75 <10 2 <10 0.004 <50 0.75 <10 2 <10 0.004 209 0.75 <10 2 <10 0.004 191 0.75 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Cadmium Dissolved Chromium Chromium Dissolved Cobalt Cobalt Dissolved Copper (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) 0.005 <10 0.1 <5.0 0.05 <10 0.005 <10 0.1 <5.0 0.05 <10 0.005 <10 0.1 <5.0 0.05 <10 0.005 <10 0.1 <5.0 0.05 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Copper Dissolved Iron Iron Dissolved Lead Lead Dissolved Lithium (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) 0.2 <70 0.3 <50 0.05 15.6 0.2 <70 0.3 <50 0.05 22.4 0.2 <70 0.3 <50 0.05 22.4 0.2 <70 0.3 <50 0.05 15.1 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 7470A Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Lithium Dissolved Manganese Manganese Dissolved Mercury Mercury Dissolved Molybdenum (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) 2.5 291 0.05 <0.10 0.002 <10 2.5 33.8 0.05 <0.10 0.002 <10 <5.0 0.05 <0.10 0.002 <10 2.5 <5.0 0.05 <0.10 0.002 <10 2.5 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Molybedenum Dissolved Nickel Nickel Dissolved Selenium Selenium Dissolved Silver (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) 0.21 <30 0.1 <50 0.02 <30 0.21 <30 0.1 <50 0.02 <30 0.21 <30 0.1 <50 0.02 <30 0.21 <30 0.1 <50 0.02 <30 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Silver Dissolved Thallium Thallium Dissolved Uranium Uranium Dissolved Vandium (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I (1,000 ug/I = 1 mg/L) (mg/L, unless other units given) ug/I 0.05 <10 0.002 <50 0.03 <10 b 0.05 <10 0.002 <50 0.03 <10 0.05 <10 0.002 <50 0.03 <10 0.05 <10 0.002 <50 0.03 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Vandium Dissolved Zinc Zinc Dissolved (mg/L, unless other units given) ug/I (mg/L, unless other units given) 0.1 <30 2 0.1 63.3 2 0.1 <30 2 0.1 <30 2 McGrane Water Engineering, LLC SWEET VALLEY RESERVOIR COMPLEX - GROUNDWATER IMPACT EVALUATION PREPARED FOR J&T CONSTULTING FORT LUPTON, COLORADO JANUARY, 2024 PROJECT NO.: J&VSVRC) SVRC Pit Evaluation MCGRANE WATER ENGINEERING, INC. PROVIDES ACCURATE, COST-EFFECTIVE GROUNDWATER SOLUTIONS TO MUNICIPAL, INDUSTRIAL, WINING, AND RECREATIONAL WATER PROVIDERS USING EXPERIENCED PROFESSIONALS AND APPROPRIATE TECHNOLOGIES. SWEET VALLEY RESERVOIR COMPLEX GROUNDWATER IMPACT EVALUATION PREPARED FOR J&T CONSULTING FORT LUPTON, COLORADO JANUARY, 2024 PROJECT NO.: J&T(SVRC) The technical material in this report was prepared by or under the supervision and direction of the undersigned, whose seals as a Professional Geologist and Professional Engineer in the State of Colorado are affixed below: The following independent consultants contributed to this report: Principal in Charge and Modeler: Dennis R. McGrane, P.E., C.P.G GIS Analyst: Tammi Renninger, ElephantFish, LLC McGrane Water Engineering, LLC. Page i SVRC Pit Evaluation Table of Contents BACKGROUND AND PURPOSE 1 Water Level History 1 Other Planned Pits 1 Report Structure 1 EXECUTIVE SUMMARY Model Results Summary SVRC Mitigation Options Impacts by Other Pits Mitigation Runs 2 3 3 3 4 Pit Scenario 2 - Only Section 20 Pits 4 Pit Scenario 3 - Only Monarch Pits 5 Pit Scenario 4 - Section 20 and Monarch Pits 5 Pit Scenario 5 - All Pits (Section 20, Monarch and SVRC 5 CONCLUSIONS AND RECOMMENDATIONS 5 EXECUTIVE SUMMARY TABLES (within text) Table 1 - Pit Scenario 1 Impacts - Only SVRC (no Mitigation) 3 Table 2 - Pit Scenario 1 Impacts - Only SVRC (with Flow to Pipeline) 3 Table 3 - Pit Run Impact Summary 5 REPORT SUMMARY FIGURES 7 Figure 1 - Study Area and SEO Wells 8 APPENDIX A - GROUNDWATER EVALUATION AND MODELING 9 Available Data 9 HYDROGEOLOGY 9 Surficial Geology 10 Well Depth 10 Bedrock Elevation 10 Water Levels 10 Depth to Water 11 Seasonal Fluctuations 11 Saturated Thickness 12 Well Yield 12 Aquifer Transmissivity 12 Hydraulic Conductivity (K) 12 MODELING 12 Boundary Conditions 13 Modflow "River" Package 13 Model Calibration - Pre -pit Run 14 Hydraulic Conductivity (K) Distribution 15 Mass Balance 15 Water Level Changes Caused by the SVRC 15 SVRC Mitigation Options 16 Model Error and Uncertainty 17 SOURCES 17 McGrane Water Engineering, LLC. Page ii SVRC Pit Evaluation Table of Contents — Continued APPENDIX A TABLES 19 Table Al - SEO Well Data Used for Hydrologic Analysis (4 pages) 20-23 Table A2 - SVRC Monitoring Well Water Levels 24 Table A3 - Section 20 Monitoring Well Water Levels (From J&T Consulting) 24 Table A4 - Modflow "River" Cell Parameters 14 Table A5 - Pre -pit Run Calibration Satistics 14 Table A6 - Pre -Pit Run Mass Balanca 15 Table A7 - Pit Scenario 1 Impacts - Only SVRC without Mitigation 16 Table A8 - Pit Scenario 1 Impacts - Only SVRC (with Flow to Pipeline) 16 APPENDIX A FIGURES 25 Figure Ala - Study Area with DWR Wells (NE) 26 Figure Alb - Study Area with DWR Wells (SE) 27 Figure Ale - Study Area with DWR Wells (SW) 28 Figure Ald - Study Area with DWR Wells (NW) 29 Figure A2 - Surficial Geology and Well Depth 30 Figure A3 - Bedrock Elevation Contours 31 Figure A4a- Year 2000 Water Table 32 Figure A4b- Recent Water Table 33 Figure A5a- Depth to Water (NE) 34 Figure A5b- Depth to Water (SE) 35 36 Figure A5c- Depth to Water (SW) Figure A5d- Depth to Water (NW) 37 Figure A6 - Aquifer Saturated Thickness 38 Figure A7 - Well Yield 39 Figure A8 - Transmissivity 40 Figure A9 - Hydraulic Conductivity 41 Figure A10 - PrePit Water Table and Calibration Residuals 42 Figure All - Scenario 1 - Change Caused by SVRC Pits 43 Figure Al2 - Scenario 1 - SVRC Mitigation to CCWCD 44 Pipeline Figure A13 - Scenario 1 - SVRC Mitigation to Drain 45 APPENDIX B - GROUNDWATER EVALUATION AND MODELING 45 BACKGROUND 46 MITIGATION RUNS 46 Pit Scenario 2 - Only Section 20 Pits 46 Pit Scenario 3 - Only Monarch Pits 47 Pit Scenario 4 - Section 20 and Monarch Pits 47 Pit Scenario 5 - All Pits (Section 20, Monarch and SVRC) 47 APPENDIX B TABLES Table B-1 - Pit Run Results Summar 48 APPENDIX B FIGURES 49 Figure Bl - Scenario 2 - Change Caused by Section 20 Pits 50 Figure B2- Scenario 2 - Section 20 Mitigation to Drain 51 Figure B3 - Scenario 3 - Change Caused by Monarch Pits 52 Figure B4 - Scenario 3 - Monarch Mitigation to Drains 53 Figure B5 - Scenario 4 - Change Caused by Section 20 and Monarch Pits 54 Figure B6 - Scenario 4 - Section 20 and Monarch Pits Mitigation to Drains 55 Figure B7 - Scenario 5 - Change Caused by All Pits (Section 20 and Monarch and SVRC) 56 Figure B8 - Scenario 5 - All Pits with Mitigation to Drains 57 Figure B9 - Scenario 5 - All Pits with Mitigation to Drains (SVRC to Pipeline) 58 McGrane Water Engineering, LLC. Page iii SVRC Groundwater Evaluation January 2024 Page 1 of 58 BACKGROUND AND PURPOSE The proposed Sweet Valley Reservoir Complex (SVRC) is located approximately 2 miles west of Gilcrest, Colorado in Section 30, Township 4 North, Range 66 West (6th PM). The site is located approximately one mile east of the South Platte River (SPR) which flows northeast along this stretch. The SVRC consists of two proposed lined pits, each approximately 40 acres. The mine owner/applicant is the Central Colorado Water Conservancy District (CCWCD). As part of the mine permit application process, the mine consultant, J&T Consulting, Inc. (J&T) requested that McGrane Water Engineers, LLC. (MWE) determine the potential impacts of installing pit liners at the SVRC. Impacts typically include a rise in the water table ("mounding") on the up -gradient side of the slurry wall and a decline in the water table ("shadowing") on the down gradient side. Water level increases to within 10 feet of the surface on the up -gradient side of the pit could also cause flooding of low-lying structures such as home basements. A decline in water levels on the down gradient side could reduce the aquifer saturated thickness and well yields if the decline is more than approximately 10 percent of the saturated aquifer thickness. Water Level History The Colorado Geological Survey (CGS) has documented a rise in alluvial aquifer groundwater levels in the vicinity of Gilcrest, Colorado over the past several decades (Topper and Others, 2014). The higher than normal water table is a concern among residence and regulators due to potential flooding of basements and water logging damage to agriculture. We created a "recent Pre -pit" water table based on CGS contours that represent 2012 conditions and modified them to consider more recent 2021 and 2023 water levels from SVRC and other pit monitoring wells. We conclude that although water levels in the pit vicinity have likely increased approximately 10 feet over past decades, they are still 10-15 feet below ground level at and upgradient from the pits. Other Planned Pits Other gravel mining operations ("Monarch" Pit and "Section 20" Pit) are planned and applications have submitted to DRMS. Applicants for both pits have proposed installing infiltration drains to mitigate mounding on the upgradient sides, and recharge ponds, trenches or subsurface "exfiltration" drains (to eliminate evaporation) downgradient to mitigate shadowing. Upgradient drains are also planned for the SVRC as discussed below. The study area surrounding the pits covers approximately 24 square miles and includes approximately 404 permitted and constructed wells (excluding abandoned wells and monitoring wells) per the State's well database (CDWR, 2023). Figure 1 shows the permitted wells (sorted by use), proposed pit boundaries (white), study area and natural features provided by Google Earth. Due to the increased density of wells closer to Gilcrest, we did not consider wells shown in yellow in our hydrology data set, but we did consider them in our water level impact (aka "change") analysis. Report Structure This report includes an: 1. Executive Summary of the study, modeling results and recommendations; 2. Appendix A that provides the hydrogeologic evaluation and description of the model conceptualization, construction and the SVRC impact and mitigation analyses; cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 2 of 58 3. Appendix B that evaluates impacts and mitigation measures of the other pits with and without the SVRC. All figures are located after each section. Some important unnumbered figures are located within the text to facilitate reading. Small numbered tables are located within the text with larger tables after each section. Figures and tables with prefixes "A" and "B" are located after the associated Appendix. EXECUTIVE SUMMARY We: 1. Reviewed published technical groundwater literature focusing on the hydrogeology of the South Platte River (SPR) near Gilcrest; 2. Compiled well data from the State's Well database (Table Al); 3. Updated maps prepared by the US Geological survey depicting the water table and alluvial aquifer bottom surfaces (aka bedrock structural elevation map) using more recent monitoring well drilling data; 4. Compiled monitoring well water level from monitoring wells drilled around the SVRC and Section 20 Pit by the applicants (Table A2). 5. Updated the table map (Figure A4a) created by the CGS (Topper et al., 2014), by considering more recent measurements around the pits (Figure A4b); 6. Evaluated the hydrogeology of the study area and created a Modflow groundwater model (Appendix A) that we used to create the "Pre -pit" water table; 7. Evaluated seasonal water level changes at the site; 8. Updated depth to water maps prepared by the CGS (Topper et al., 2014) within the study area (Figures A5a, b, c, and d); 9. Evaluated changes in groundwater levels compared to the "Pre -pit" water table caused by the SVRC liner (Pit Scenario 1); 10. Evaluated changes in groundwater levels from other pit scenarios (Appendix B) including: Pit Scenario 2 - Section 20 pits; Pit Scenario 3 - Monarch Pits; Pit Scenario 4 - Both Section 20 and Monarch Pits; and Pit Scenario 5 - All Pits (Section 20, Monarch and SVRC). 11. Each Pit Scenario includes at least one mitigation run that reduces mounding and shadowing using dewatering wells and infiltration and exfiltration drains discussed below. Model Results Summary The groundwater model was constructed using reasonable aquifer properties and boundary conditions (aquifer sides, bottom, thickness and river leakage assumptions). The Pre -pit Run was calibrated to recent water levels such that Root Mean Square (RMS) error is less than 3 ft (Figure A10). The modeled elevation contours are very similar to our Pre -pit water table (Figure A4b). Pit Scenario 1 simulates the effects of installing the SVRC liners. When the SVRC liners are installed, water level changes in the range of plus or minus (+/-) 1 to 3.5 feet occurs within a half mile upgradient (mounding) and a half -mile downgradient (shadowing). There are two registered cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 3 of 58 wells within the mounding and four registered wells located within the shadowing areas as summarized in Table 1: Table 1 - Pit Scenario 1 Impacts - Only SVRC (no Mitigation) Water Level Changes in Registered Wells (Run 1) It # Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit Mounding (+) 58-WCB KROSH & HANSEN 4 N 66 W 30 r +1.2 https://dwr.state.co.us/Tools/WeIlPermits/C620058 54-WCB HANSEN, CASTOR 4 N 66 W 30 r +1.9 https://dwr.state.co.us/Tools/WeIlPermits/C620054 Shadowing (-) 19924-U EPPINGER LINDA KAY 4 N 66 W 19 r -2.1 https://dwr.state.co.us/Tools/WeIlPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.2 https://dwr.state.co.us/Tools/WeIlPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 r -1.1 https://dwr.state.co.us/Tools/WeIlPermits/9062687 185466-A EATON CATTLE CO 4 N 66 W 19 -1.1 https://dwr.state.co.us/Tools/WeIlPermits/0371951B The combined effect of upgradient mounding and seasonal water level increases may increase water levels to within 10 feet of ground level at these wells, which may require upgradient mitigation to prevent their basements (if they exist) from flooding. SVRC Mitigation Options We evaluated two mitigation options, both included installing two vertical dewatering wells upgradient of the SVRC and pumping a combined total of approximately 400 gpm total to offset upgradient mounding. The preferred option is to discharge the dewatering wells into a pipeline belonging to the applicant (CCWCD) which discharges near the SPR approximately 3 miles to the north. By doing so, the shadowing will increase due to drawdown from the extraction wells. Figure All shows that the downgradient shadowing of -1 to -3 feet extends approximately one-half mile from the SVRC. Eight wells are affected and summarized in Table 2. Table 2 - Pit Scenario 1 - Only SVRC (with Flow to CCWCD Pipeline) Downgradient Shadowing in Registered Wells (Run 1Mit-a) 'ermit # Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit 19924-U EPPINGER LINDA KAY 4 N 66 W 19 r -2.7 https://dwr.state.co.us/Tools/WeIlPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.7 https://dwr.state.co.us/Tools/WeIlPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 r -1.5 https://dwr.state.co.us/Tools/WeIlPermits/9062687 185466-A EATON CATTLE CO 4 N 66 W 19 -1.5 https://dwr.state.co.us/Tools/WeIlPermits/0371951B 14028-R UNITED WATER & SANIT/ 4 N 66 W 30 -1.5 https://dwr.state.co.us/Tools/WeIlPermits/9061848 19924 -T -R EPPINGER LINDA KAY 4 N 66 W 19 -1.4 https://dwr.state.co.us/Tools/WeIlPermits/9062685 23014 BRECKON, HOWARD W 4 N 66 W 19 -1.3 https://dwr.state.co.us/Tools/WeIlPermits/9062965 11113-R HS LAND & CATTLE LLC 4 N 66 W 30 -1.3 https://dwr.state.co.us/Tools/WeIlPermits/9060576 11114-R HS LAND & CATTLE LLC 4 N 66 W 30 -1.3 https://dwr.state.co.us/Tools/WeIlPermits/9060577 187426-A MORAN, TERESA 4 N 66 W 30 -1.3 https://dwr.state.co.us/Tools/WeIlPermits/0385674D 19924 -R -R HS LAND & CATTLE LLC 4 N 66 W 19 -1.0 https://dwr.state.co.us/Tools/WeIlPermits/0343851 The second mitigation option is to install an exfiltration drain downgradient of the SVRC to infiltrate the 400 gpm pumped by the dewatering wells. This will effectively mitigate pit impacts as shown in Figure A13. Although this run demonstrates that exfiltration drains are effective, we believe pumping into CCWCD's pipeline may provide additional shadowing benefits downgradient and the small declines will not affect the yield of nearby wells. Impacts by Other Pits In Appendix B, we evaluated four additional pit development scenarios including: cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 4 of 58 • Pit Scenario 2 • Pit Scenario 3 • Pit Scenario 4 • Pit Scenario 5 — Only Section 20 Pits (Run 2); — Only Monarch Pits (Run 3); - Both Section 20 and Monarch Pits (Run 4); and - All Pits (Section 20, Monarch and SVRC) — Run 5. In each scenarios, we simulated pits in the model by assigning pit cells as impermeable "no -flow" cells and then calculated the "change" compared to water levels from the Pre -pit Run. Mitigation Runs In the Mitigation Runs, we attempt to minimize the upgradient change by simulating dewatering wells and or infiltration drains upgradient of pits to reduce drawdown. For Scenario 1 (Only SVRC Pit), discussed in Appendix A, we used two dewatering wells. For the Section 20 Pit, the applicant plans to install both drains and wells to mitigate upgradient mounding, and simulate downgradient recharge through a surface recharge pond located outside the center of the downgradient liner (Civil Resources, 2021 Sheet 6). To date, we are uncertain what Monarch's mitigation plan will entail, so we chose to evaluate the use of exfiltration drains. We believe that installing downgradient exfiltration drains will be more cost effective and require less maintenance and augmentation challenges than using recharge ponds, which is why we used them in this analysis. For Scenarios 2-5, we evaluated horizontal infiltration drains to mitigate mounding. Groundwater flow into a drain is controlled by the conductance term (COND) which is a function of the drain area, permeability of the gravel fill around the drain and depth below the water surface. We assume a 1 foot cross-sectional drain surrounded by gravel with a hydraulic conductivity (K) of 400 ft/day. COND is calculated internally by the model using the digitized length of drain across each model cell. For a 100 foot -long model cell, COND = 40,000 ft^2day (400 ft/day x 1 ft x 100 ft). We determined the depth of each upgradient drains by trial -and -error to achieve zero drawdown, and then iteratively "hard wired" that amount as recharge using the Modflow "Recharge" package. Using this approach to simulate exfiltration drains, we were able to spread the water out over a longer stretch than could be achieved using a real drain where the water will drain alongthe path of least resistence. We report the predicted drain flow for each model scenario which, in reality, will vary depending on the drain design and site -specific aquifer properties. Pit Scenario 2 — Only Section 20 Pits Figure B1 shows the impact of liners installed in Section 20 Pits under Scenario 2. The model predicts mounding in the range of +1 to + 6.2 feet in approximately 25 wells. Shadowing is expected in the range of +1 to + 6.4 feet in approximately 87 wells. We did not tabulate the well owners affected since it is not the purpose of this evaluation. To mitigate upgradient mounding Figure B2 shows a dashed yellow line that represents the upgradient drain and a solid yellow line representing the exfiltration drain along the northern pit boundary. The simulated drain flow is approximately 1467 gpm which reduces water level changes to nearly zero. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 5 of 58 Pit Scenario 3 — Only Monarch Pits Under Scenario 3 only Monarch Pits are simulated. The change in water levels associated with just the liner show mounding is expected in the range of +1 to + 4.2 feet in approximately 4 wells (See Figure B3). Shadowing is expected in the range of -1 to -3.7 feet in approximately 76 wells. Most impacts can be reduced to below +/- 1 foot if an upgradient drain is installed in front of Cell 1 (elevation 4742 ft) and Cell 3 (elevation 4733 ft), and an exfiltration gallery is installed downgradient to reinfiltrate the groundwater (Figure B4). The simulated combined drain flow is approximately 1016 gpm. Pit Scenario 4 — Section 20 and Monarch Pits Under Scenario 4, both Section 20 Monarch Pits are simulated. Mounding is expected in the range of +1 to + 5.9 feet in approximately 27 wells (See Figure B5). Shadowing is expected in the range of -1 to -6.4 feet in approximately 132 wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient drains are installed at both pits (Figure B6). Model results show the infiltration and exfiltration drains will flow approximately 2373 gpm. Pit Scenario 5 — All Pits (Section 20, Monarch and SVRC) Under Scenario 5 only Monarch Pits are simulated together. The change in water levels associated with just the liners, shows mounding in the range of +1 to + 5.9 feet in approximately 27 upgradient wells (Figure B7). Shadowing is expected in the range of -1 to -8.7 feet in approximately 133 downgradient wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient infiltration and exfiltration drains are installed at both the Section 20 and Monarch pits. At the SVRC, we simulated two upgradient wells, each pumping 225 gpm (450 gpm total). Using an exfiltration drain (Figure B8), the total drain inflow is approximately 2367 gpm and exfiltration drain outflow is 2817 which includes the amount pumped. In the preferred mitigation run for SVRC, where pumped water is exported off -site into the CCWCD pipeline (Figure B9), the infiltration and exfiltration drain flows are the same (2367 gpm). Both mitigation runs are equally effective at reducing shadowing downgradient which is why the applicant prefers to discharge into the CCWCD drain. Table 3 summarizes each pit scenario impact and mitigation run. Table 3 - Pit Run Summar Pit Scenario Run Description Without Mitigation With Upgradient Mitigation Downgradient Mitigation Fig. Number or Wells with Water Level Change Well Infiltration Exfiltration Fig. Pumping Gallery (gpm) (gpm) Drain (gpm) Number or Wells with Water Level Change Mounding Shadowing >1ft >1ft Mounding Shadowing >1ft >1ft 1 Only SVRC A11 2 4 Al2 400 na na 0 8 A13 400 na 400 0 0 2 Only Section 20 Pit B1 25 87 B2 na 1467 1467 0 0 3 Only Monarch Pit B3 4 76 B4 na 1016 1016 0 2 4 Section 20 and Monarch Pits B5 27 132 B6 na 2373 2373 0 0 5 Section 20, Monarch and SVRC (All Pits) B7 27 133 B8 450 2367 2817 0 0 B9 450 2367 2367 0 0 CONCLUSTIONS AND RECOMMENDATIONS We conclude: 1. Over the past 20 years, rising groundwater levels in the G i 1 c r e s t area has been documented by the Colorado Geological Survey (Badman and Others, 2014). cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 6 of 58 Groundwater levels increases of approximately 10 - 15 feet over the past 30 years are common over most of the model area. However, near the SVRC, monitoring well data suggests increases have slowed to only about 1 foot in the past decade. This is much less than the average 5 -foot seasonal fluctuation measured at the SVRC. 2. Based on updated recent depth to water maps, the depth to water near the SVRC site varies and in some areas upgradient of the pit are currently less than 10 feet below the ground surface. Groundwater levels downgradient near the mapped SPR are less than 5 feet from the ground surface. 3. Model simulations demonstrate that the SVRC liners will cause +/- 3.5 feet changes water levels up and downgradient which may increase levels above a depth of 10 feet. Potentially "impacted" wells are listed in the above tables. 4. Upgradient mitigation by pumping approximately 400 gpm from two wells can alleviate upgradient impacts (Figures Al2 and A13). 5. Carefully designed and constructed infiltration and exfiltration drains can effectively offset potential impacts. 6. We evaluated mitigation measures for the SVRC with and without other pits being constructed. In both options, upgradient dewatering will effectively mitigate upgradient mounding. We believe it would be more beneficial to vicinity property owners if pumped groundwater was transported off -site in a pipeline belonging to CCWCD. However, if that option is not approved, pumped groundwater can be reinfiltrated which will offset downgradient shadowing. 7. Other pits, including Monarch and Section 20 are expected to have much greater and broader impacts as shown in other model scenarios (Appendix B). 8. The combined impact of both the Monarch and Section 20 pits (Scenario 4, Figure B6) could impact hundreds of wells within a range of +9 feet of mounding to -6 feet of shadowing unless mitigation measures are implemented. 9. At all planned lined pit sites, careful mitigation using infiltration and exfiltration drains can effectively mitigate pit impacts. 10. We recommend that ongoing monitoring occur throughout the Gilcrest area to evaluate ongoing water level changes that may be naturally occurring or resulting from approved pit development. cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 7 of 58 REPORT SUMMARY FIGURE 1 cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com Page 8 of 58 FIGURE 1 4N 67W I 4N 66W j.. Site Map Weld County, Colorado Sources: ly JT Consulting Pit outlines; 2y 8arkmann, 2014, Table 2017TM-1; IJSGS DEM 10m; CDSS Well Database; Google Earth Imagery (2021); .a 15:▪ a▪ igiOltif?t! Map Legend r _1 Study Area = Model Area Sweet Valley Reservoir Complex Pit 0 Section 20 Pit Monarch Pit YQ.,¢.?_5 0.5 1 - ,� Mile Eastern Slough* Western Slough* Western Canal Sweet Valley Reservoir Complex MW ❑ Section 20 Pit MW *Standing water per Google Earth Image June, 2021. "Yellow symbols represent DWR that were not used for geologic characterization. O Well WL-M-001 (ref. 2) DWR Wells Used for Geologic Characterization" o Domestic/Stock O Irrigation f Monitoring/Sampling 0 Municipal O Dewatering/Other/NA Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet 1 : arc ran. r SVRC Groundwater Evaluation January 2024 Page 9 of 58 APPENDIX A - GROUNDWATER EVALATION AND MODEI JNG The proposed Sweet Valley Reservoir Complex (SVRC) is located approximately 2 miles west of Gilcrest, Colorado in Section 30, Township 4 North, Range 66 West (6th PM). The complex consists of two pits each consisting of approximately 40 acres. The site is located approximately 1 mile east of the South Platte River (SPR). In this appendix we will discuss: • The available data and study area hydrogeology; • Groundwater modeling assumption and model construction; • Model calibration; • Modeling results of the Pre -pit (pre -liner) run; • Modeled water level changes caused by the SVRC and mitigation options; and • Model error and uncertainty. In Appendix B (following), we evaluate the impact of other individual pits and joint impacts of combined pit scenarios. Available Data We compiled hydrogeologic data from: • Existing reports from the US Geological Survey, Colorado Geological Survey and Colorado Division of Water Resources (see Sources below); • Permitted well "completion reports" filed with the State Engineer's Office ("SEO" wells) located within approximately 2 miles of the proposed pit; and • Four monitoring wells installed around the SVRC and seven monitoring wells belonging to the Section 20 pit provided by J&T. Figure la, lb, lc and ld show the overall study area, model area, pit properties, permitted wells color coded by use, well permit numbers and SVRC and Section 20 private monitoring wells. They include 404 permitted wells located within the study area. Abandoned wells and other private monitoring wells were excluded because they cannot be impacted. The remaining wells shown on the figures are used for irrigation (226), domestic water supply (125), commercial (15) stock (7), industrial (4) municipal (2) and other purposes. Because the density of wells increases to the east toward the Town of Gilcrest, we did not utilize all the well data to characterize the aquifer. Figure 1 (shown before Appendix A) shows wells (colored yellow) that were excluded from the hydrologic data set. The remaining compiled data (Table Al) includes: the permit number, well owner, Colorado State Plane coordinate, USGS Digital Elevation Model (DEM) elevation, registered use, well depth, and reported static water level (SWL). Well use, depth and water level statistics are discussed below. HYDRO GEOLOGY cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 10 of 58 The hydrogeology of the SPR alluvial aquifer is described in detail by the US Geological Survey (Smith and Others, 1964, Hurr and Schneider, 1972, Robson, 2000, Lindsay and Others, 1998 and 2005). More recently, the Colorado State University, (CSU, 2013) updated the surface water and groundwater hydrology, while the Colorado Water Conservation Board prepared an extensive study on the SPR as part of the South Platte River Decision Support System (SPDSS) project (CDM, 2006 and 2013). In 2014, in response to observed evaluated water levels around Gilcrest (2 miles to the east), and LaSalle, the Colorado Geological Survey (CGS) conducted a study (Barkmann and Others, 2014) focusing on groundwater level trends. Barkmann references the SPDSS data base for their analysis. The most recent geologic mapping was also prepared by the Colorado Geological Survey (Palkovic and Others, 2018), which we used to better refine the western edge of the alluvial aquifer. Surficial Geology Figure A2 shows the site surficial geology mapped by the CGS (Palkovic and Others, 2018). The model area consists of alluvial deposits within the SPR floodplain. The alluvium consists of alluvial (Qa) sand and gravel (geologic map symbols: Qa, Qai, Qaz, and Qa3 ) based on their age (recent to older). The alluvial aquifer, consisting of mostly sand and gravel, extends below wind blow dune sand and loess (fine silt and sand) deposits (Qe) along the east side of the model near Gilcrest. Well Depth Figure A2 also shows the reported well depths from 288 wells (Table Al) ranging from 5 to 200 feet and averaging 58 feet within the study area. We assume that the depth of the wells is at the base of the alluvial aquifer (ie. top of bedrock). Assuming this, the alluvium appears to deepen from approximately 40-60 feet near the SPR to 80-90 feet along the east side of the model. Bedrock Elevation Figure A3 shows the elevation contours of the structural top of bedrock digitized from Robson and Others (2000) based on the ground surface topography above the floodplain combined with the elevation of bedrock determined from SEO well data. The well elevation data plotted from Table Al is consistent with the Robson contours and those prepared by the CGS (Badman and Others, 2014, Fig. 7). The contours show that the bedrock drops abruptly from outcropping Fox Hills Sandstone west of the model into a paleochannel (erosional remnant) beneath the SPR. The bedrock surface rises in the center axis of the model and then drops into a deeper paleochannel that extends along the eastern side of the model beneath the Town of Gilcrest. This is consistent with the well depth data discussed above and shown in Figure A2. Water Levels We initially prepared a water table map (Figure A4a) using all SEO well data and contours prepared by Robson (2000). We then updated the map using SVRC monitoring well data measured in December, 2023 (Table A2) and Section 20 monitoring wells (Table A3) measured in December, 2021 (orange squares). The higher recent measurements near older wells suggest that water levels have risen approximately 10-15 feet in the pit vicinity since 2000 when Robson made his interpretation of reported values in the SEO well database. We updated more recent water level contours prepared by the Colorado Geological Survey that represent spring 2012 conditions (Topper and Others, 2014, Fig.10), using the recent monitoring well data and surveyed surface water elevations provided by J&T (Figure A4b, ref blue diamonds). The resulting solid contours on Figure A4b represent CGS 2012 contours with dashed contours having a higher degree of uncertainty. The dotted contours were updated by MWE. We cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@incgrannlater.com SVRC Groundwater Evaluation January 2024 Page 11 of 58 believe Figure A4b represents recent, pre -pit conditions. We used Figure A4b contours and monitoring well level measurements to calibrate the groundwater model. Groundwater flows perpendicular to the water level contours, often preferentially through zones of higher permeability and thickness (the product of which is referred to as the transmissivity). The water table elevation at the southwest corner of the model is at approximately 4760 to 4770 ft (msl) and flows northwest toward the SPR. Most of the groundwater entering the model is from the south. The water table is tied to DEM elevations of the SPR at 10 -ft intervals. The water table gradient falls approximately 35 feet from approximately 4730 ft (msl) on the southwestern end to 4695 ft (msl) on the northwestern corner. The contours show that the SPR is a gaining stream throughout the reach. Depth to Water (ft) The CGS prepared a depth to water map using their spring 2012 water table (Barkmann and Others, 2014, Fig. 7) that shows shallow groundwater within 5-15 feet of the ground near the SPR and mapped sloughs, and near Gilcrest. We prepared an updated Depth to Water maps (Figures Asa, A5b, A5c, and A5d) using current water table conditions (Figure A4b). The maps show that the depth to water is mostly greater than 15 feet deep at the SVRC, Monarch and Section 20 pits, with shallower groundwater (within 10 -15 feet) upgradient. The depth to water is only less than 5 feet deep close to the SPR and in the vicinity of Gilcrest (Figure A5b). Seasonal W iter Table Ilucluatlons Monitoring Well WL-M-001 is located approximately 400 east of the north SVRC as shown on Figure A2. It was used by the CGS (Barkmann and Others, 2014, Table 2017TM-1) for their water level change evaluation. J&T provided us the continuous water level measurements plotted below. Depth to Water (ft) — Monitoring Well WL-M-001 (Barkmann, 2014, Table 2017TM-1) Depth to Water (ft) 0 5 10 15 20 25 Depth to Water (ft) •--e-- [legation (ft msl) — — Linear (depth to Water (ft)] I� LA I-, I-% LA LA N u I-, I-, N � w w N � � � N O N N N _ O O O u ▪ I-, u Cr. N W -P+ From this plot, we conclude: u u N u u � � � � � U., w 1-,ct., w -LD , � N � N N O N N O O F-, O O I-, I-, LC, , N ✓ CO O I-, Date 4758.5 4753.5 4748.5 4743.5 4738.5 4733.5 Water Elevation (ft msl) McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: Bennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 12 of 58 • The depth to water in the vicinity of the SVRC is approximately 15-20 feet below ground level; • Water levels away from the SPR fluctuate seasonally in the range approximately 5 feet per year; • High water levels occur in late September and early October most years; • The average water table level rose approximately 1 foot from 18 to 17 feet in the last decade; and • December water levels (used to upgrade the recent water table map (Figure A4b) closely represent the average water table depth, therefore • A reasonable "recent" average level plotted on Figure A4b is approximately 4741.5 ft. Saturated Aquifer Thickness We calculated the aquifer saturated thickness as the difference between the recent water table (Figure A4b) and the top of bedrock (Figure A3). Figure A6 shows how the average saturated aquifer thickens approximately 30 - 40 feet near the SPR to 60 - 86 feet within the paleochannel beneath the Town of Gilcrest. Well Yield Well yield is proportional to the aquifer saturated thickness. We plotted reported well yields extracted from the State's well database (Table Al) on Figure A7. Well yields range from 5 gpm for domestic wells to over 2500 gpm for irrigation wells. Aquifer Transmissivity Figure A8 shows the contoured aquifer transmissivity (T) which is the product of the aquifer hydraulic conductivity (a measure of permeability) multiplied by the saturated thickness (Figure A6). The computed transmissivity ranges from less than 50,000 gpd/ft near the SPR to over 300,000 gpd/ft near Gilcrest. The resulting transmissivity distribution used in our model is consistent with the CGS (Barkmann, 2014, Fig. E9) who reportedly refined aquifer properties from the SPDSS model (CDM, 2006, Fig. 7a). We plotted transmissivity values determined from SPDSs modeling which shows that our and Barkmann's values are typically higher. Hydraulic Conductivity (I) The transmissivity is equal to the hydraulic conductivity (K), a measure of permeability multiplied by the saturated thickness (Figure A9). The K distribution and values are similar to those determined for the Section 20 model (Civil Resources, 2021, Sheet 3). See "Model Calibration - Pre -pit Run" section below. MODELING We used the Groundwater Vistas (GV) pre and post processor (version 8.3 Build 87, Environmental Solutions, Inc.) to construct and run a MODFLOW2000 (Harbaugh et al, 2000) model and display the results. We exported processed cell -by -cell flow terms from the model into ArcView GIS software to process prepare report figures. The model consists of one layer, 180 rows and 220 columns using 100 -foot square model cells. (180,000 feet high and 220,000 feet wide). The active model area is approximately 12.7 square miles. Precipitation and evapotranspiration are not considered in the model runs because we do not expect there to be a significant change in either of these parameters resulting from pit lining or installing drains. Therefore, it is unnecessary to spend additional time to understand and simulate them. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 13 of 58 Since both the pre -pit and post -pit steady-state runs represent average groundwater conditions, the differences shown in the figures below are average differences. As we will discuss later, these changes are comparable and sometimes exceed the average annual water table fluctuations. In addition, shadowing downgradient may actually benefit downgradient water users by dampening what was a natural increase in water levels. For this reason, we need to keep the discussion of "change" in perspective compared to seasonal changes that also will occur. Boundary Conditions The model is centered on the SVRC but extends up and downgradient approximately 2 miles. The model is rotated 40.49 degrees counterclockwise so that the SPR is parallel to the active western model boundary. Model cells west of the SPR were turned off (using Modflow "no -flow" cells) because significant groundwater flow does not flow underneath the SPR. The bottom bedrock surface was digitized in ESRI GIS software and imported into the model on a 100 ft grid. The south, north and east sides of the model consist of MODFLOW Constant Head (CH) cells that establish a fixed gradient within the stream alluvium. We assigned MODFLOW "River" cell stage elevations using 10m DEM data and interpolating in between. Modf7om "River- Package We modeled the aquifer's connection to the SPR and sloughs located between the planned pits and the SPR using the MODFLOW "River" package which uses a streambed conductance term (COND) to calculated flow from one to the other in proportion to the hydraulic gradient between surface water and groundwater. . COND is calculated as the product of the streambed unit conductance (Ksb/m) times the wetted river area (length * width). Ksb is the streambed vertical permeability and m is the streambed thickness (m) which we assume is 1 ft so that Ksb/m equals Ksb. CDM-Smith (2006, Task 34.3 Streambed Conductance Figure 9) evaluated the streambed permeability at two sites (SC -O7 and SC -08 located within 10 miles of the SVRC pit, and came up with Kh values ranging from 137 ft/day to 377 ft/day. Tests conducted in 2009 by Leonard Rice Engineers, Inc. (Denver, Co.) near Ft. Lupton (in Twn. 2N, Rng. 66W, Sec. 18) arrived at a Ksb value of 36 ft/day (Miller, 2009). Therefore, to be conservative, we decided to reduce the connection to the river by using a Ksb of 36 ft/day. For sloughs, we assume that fine-grained silt that accumulates and reduces Ksb by a factor of 10 to 3.6 ft/day. Using Google Earth imagery taken in October 2017, we measured the SPR river widths at the southwest corner of the model (115 ft), center (128 ft) an northwest (134 ft) corners of the model area (average = 126 ft). Representative MODFLOW River cell parameters are shown in the table below. For the eastern slough we measured the width at three locations along the "S" shape which averaged approximately 100 feet. For the western slough located west of the Monarch pits, the slough width averages 30 feet. Table A-4 shows COND variables. cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 14 of 58 Table A-4 River Cell Parameters MODFLOW "River" Cell Parameters Location Width (ft) Cell Length (ft) Streambed Conductance Ksb/m (day^ -1) COND (ft^2/day) South Platte River 126 100 36 452400 Eastern Slough 100 100 3.6 36000 Western Slough 50 100 3.6 18000 Calculated CONDs range from 18,000 ft^2day for the western slough to 452,400 ft/2day for SPR River cells. The actual COND for each model cell is calculated by the model based on the digitized river or slough length in each "River" cell. The exchange of water between the river cells and aquifer is determined by multiplying COND by the head difference in the river and the underlying model cell. With such a high COND values (even for the western slough), we believe there is a free flow of water between groundwater and surface water in the model. Model Calibration - Pre -pit Run We calibrated the model to Pre -Pit Run (Figure A4b). The process of calibration involves changing hydraulic conductivity values until the modeled cell elevations closely match observed values for the model cells they are in. Figure A10 shows the modeled water table contours (aqua colored) compared to blue "target" contours (Figure A4b). The calibration "residuals" are the differences between observed monitoring well values compared to model generated output. Blue labels show where the observed values are higher than the modeled values, and red values are where observed values are below the modeled values. Calibration statistics and plotted observed verses modeled heads are shown in Table A-5. Table A-5 Pre -pit Run Calibration Statistics Modeled Water Table Elevatiun {ft rr:s4 .1745 4740, 4:7 ,, 1 1720 .1715 .1710 471: 4722, 4720 4740 750 Observed Water Table Elevation (tt.msli Residual Mean 1.915 Absolute Residual Mean 2.141 Residual Std. Deviation 2.288 Sum of Squares 97.938 RMS Error 2.984 Min. Residual -0.912 Max. Residual 5.871 Number of Observations 11.000 Range in Observations 30.360 Scaled Residual Std. Deviation 0.075 Scaled Absolute Residual Mean 0.071 Scaled RMS Error 0.098 Scaled Residual Mean 0.063 If there were perfect match, the observed verses modeled data would plot on a straight line with a perfect 1:1 relationship. The best fit line shown above has a slope of 0.9996:1 which is a very close to perfect. The Root Mean Squared (RMS) error (2.984 ft) is the square of the difference between the observed and modeled values (aka "residual"). We feel this value is reasonable considering the data comes from two different years when precipitation recharge, well pumping, river stage fluctuations and agricultural return flow vary. cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 15 of 58 Upon close inspection of the residuals on Figure A4b, the model does a good job matching heads at the Section 20 pit, but the modeled heads are 5-6 feet lower than observed levels at the SVRC. There appears to be a nearly a 10 -foot gradient across the SVRC site that the model does not closely replicate. We do not believe this is a critical for evaluating water level "changes" resulting from future lined pits since there is low risk that lined pits with mitigation will likely cause additional water level increases. Hydraulic C'oncluctnvity (K) Distribution We spent a considerable time trying to reduce the RMS by changing the K zoning and values. The K distribution was guided by the distribution created by Civil Resources for the Section 20 model (Civil Resources, LLC, December, 2022). Civil Resources (CR) "calibrated" their model to a Pre - pit water table constructed using monitoring well observations and published SEO well data. Their resulting K distribution showed a zonal increase from 370 to 805 ft/day from the SPR eastward through the SVRC and Section 20 sites (CR, 2022, Sheet 3). Our "best" calibration results occurred when we used a K zoning that increasing from 75 at the SPR to 400-600 ft/day at the SVRC and Section 20 sites as shown in Figure A9. Mass Balance Table A6 shows the model mass balance results of the Pre -pit Run (Run: Mein_SS6) which shows the inflow and outflow components that include alluvial aquifer inflow (19.84 cfs) and outflow (8.95 cfs), and 10.89 cfs (11.60-0.71) of river gains. Table A6 — Pre -Pit Run Mass Balance Mass Balance (cfs) Source Inflows Outflows Aquifer 19.84 -8.95 River 0.71 -11.60 Total 20.54 -20.54 Error = -0.006% The total aquifer inflow and outflow balance at 20.54 cfs. The mass balance error is less than .01 percent. 0.01% based on the difference between inflows and outflows. Water Level Changes Caused by the SVRC Pit Scenario 1 (Run 1) simulates water level changes resulting from installing the SVRC liner compared to the Pre -pit Run. After installation, the model predicts water level changes up to plus or minus (+/-) 3.5 feet. Figure All shows the mapped change. The change is greatest at the pit walls but grades outward approximately a half -mile upgradient (mounding) and half -mile downgradient (shadowing). There are two registered wells within the mounding and four registered wells located within the shadowing areas summarized below. Well permit 58-WCB experiences the greatest mounding at +1.2 feet whereas Well permit 18824-U experiences the greatest shadowing. cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 16 of 58 Table A-7 Pit Scenario 1 Impacts - Only SVRC (without Mitigation) Water Level Changes in Registered Wells (Run 1) lit # Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit Mounding (+) 58-WCB KROSH 8I. HANSEN 4 N 66 W 30 +1.2 https://dwr.state.co.us/Tools/Well Permits/C620058 54-WCB HANSEN, CASTOR 4 N 66 W 30 r +1.9 https://dwr.state.co.us/Tools/WeIlPermits/C620054 Shadowing (-) 19924-U EPPINGER LINDA KAY 4 N 66 W 19 r -2.1 https://dwr.state.co.us/Tools/WeIlPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.2 https://dwr.state.co.us/Tools/WeIlPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 r -1.1 https://dwr.state.co.us/Tools/WeIlPermits/9062687 185466-A EATON CATTLE CO 4 N 66 W 19 -1.1 https://dwr.state.co.us/Tools/WeIlPermits/0371951B With the depth to water being 10 to 15 feet deep at these wells (Figure A5d), the additional 1-3 feet of mounding in addition to the +/- 5 -foot seasonal fluctuation may cause flooding of basements if they exist. Therefore, we recommend monitoring and mitigation (drains or wells) upgradient of the SVRC to protect these wells. SVRC Mitigation Options We evaluated two mitigation options for the SVRC; both include installing two vertical dewatering wells upgradient of the SVRC to offset the expected mounding. For both runs, upgradient mounding will be eliminated by two pumping wells located approximately 800 feet apart, each pumping 200 gpm total (400 gpm total). The preferred option (Run 1 Mit-a) is to discharge the dewatering wells into a pipeline belonging to the CCWCD Water Conservancy District (CCWCD) which discharges approximately 3 miles to the north into the SPR. By doing so, the downgradient shadowing affect will increase due to drawdown from the extraction wells. Figure Al2 shows that the downgradient shadowing of -1 to -3 feet extending approximately one-half mile from the SVRC. Eight wells are affected and summarized in the table below. Pit Scenario 1 - Only SVRC (with Mitigation into CCWCD Pipeline) Downgradient Shadowing in Registered Wells (Run 1Mit-a) Permit # Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit 19924-U EPPINGER LINDA KAY 4 N 66 W 19 r -2.7 https:Nwr.state.co.us/Tools/WeIlPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.7 https:Nwr.state.co.us/Tools/WeIlPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 r -1.5 https:Nwr.state.co.us/Tools/WeIlPermits/9062687 185466-A EATON CATTLE CO 4 N 66 W 19 -1.5 https:Hdwr.state.co.us/Tools/WeIlPermits/0371951B 14028-R UNITED WATER & SANIT<4 N 66 W 30 -1.5 https:Nwr.state.co.us/Tools/WeIlPermits/9061848 19924 -T -R EPPINGER LINDA KAY 4 N 66 W 19 -1.4 https:Nwr.state.co.us/Tools/WeIlPermits/9062685 23014 BRECKON, HOWARD W 4 N 66 W 19 -1.3 https:Nwr.state.co.us/Tools/WeIlPermits/9062965 11113-R HS LAND & CATTLE LLC 4 N 66 W 30 -1.3 https:Nwr.state.co.us/Tools/WeIlPermits/9060576 11114-R HS LAND & CATTLE LLC 4 N 66 W 30 -1.3 https:Nwr.state.co.us/Tools/WeIlPermits/9060577 187426-A MORAN, TERESA 4 N 66 W 30 -1.3 https:Hdwr.state.co.us/Tools/WeIlPermits/0385674D 19924 -R -R HS LAND & CATTLE LLC 4 N 66 W 19 -1.0 https:Nwr.state.co.us/Tools/WeIlPermits/0343851 The second mitigation option is to install an exfiltration drain downgradient of the SVRC to infiltrate the 400 gpm pumped by the dewatering wells (Run 1Mit-b). This was done iteratively by first determining the amount of upgradient pumping and then recharging that amount using the Modflow recharge package along a line of "Recharge" cells along the downgradient pit boundary. The combined effect of the upgradient mitigation and downgradient exfitration is that no wells will expereince any significant (> 0.5 ft) change in water levels as shown in Figure A13. cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 17 of 58 Although this run demonstrates that exfiltration drains are effective at mitigating downgradient shadowing, the applicant (CCWCD) believes that pumping into their pipeline is adequate. We agree because we believe that shadowing less than 3 feet will provide a benefit to homeowners who may be experiencing high groundwater conditions in recent years. In addition, a slight decline in water levels at the downgradient wells will not significantly reduce well yields. Model Error and Uncertainty Our modeled predictions include three types of error: 1) conceptual error (how the model is set up and what boundary conditions are used); 2) parametric error (how aquifer properties are measured and calculated); and 3) predictive error (which includes other influences such as seasonal recharge or climate change variations). It was beyond the scope of this project to quantitatively evaluate the sum of these errors. However, based on our professional opinion, we believe our model results are reasonably accurate for the purpose of this study. There is uncertainty in our predictions related to measurement and modeling error. USGS 10m DEM Data was used to assign ground elevations to off -site wells. The overall accuracy of expressed as the root mean square error (RMSE) for 10m DEM data for one study in (Haneberg, 2006) is 1.87 m or approximately +/- 6 ft. The accuracy of surveyed site well elevations data is much higher, probably within a tenth of a foot, and the accuracy of hand - measured water levels can vary several inches. SOURCES Barkmann, Peter E., Horn, Andy, Moore, Annette, Pike, Jeremy, and Curtiss, William. 2014. Gilcrest/LaSalle Pilot Project Hydrogeologic Characterization Report. Colorado Geological Survey, prepared for the Colorado Division of Water Resources and the Colorado Water Conservation Board. CDM-Smith, April, 2013a. South Platte Decision Support System Alluvial Groundwater Model Report. CDM-Smith, December 6, 2006. SPDSS Phase 3, Task 34.3 South Platte Alluvium Region Aquifer Property Technical Memoradum. Colorado Division of Water Resources (CDWR), June, 2023. Well permit website search: Memorandum. http://www.dwr.state.co.us/WellPermitSearch/ Colton, Roger B., 1978. Geologic Map of the Bounder —Fort Collins — Greeley, Area, Colorado. US. Geological Survey Map I -855-G. 1: 100,000. Civil Resources, LLC., December, 2022. Gilcrest Area Alluvial Groundwater Model — Potential Impacts of Proposed Gravel Mining. Prepared for Red Tierra Equities, LLC. Greenwood Village, Co. 80111 Colorado State University (CSU), December, 31, 2013. HB 12-1278 Study of the South Platte River Alluvial Aquifer. Report to the Colorado Legislature. Environmental Solutions, Inc. April 2023. Groundwater Vistas version 8.30 build 87. Developed by Jim and Doug Rumbaugh. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 18 of 58 Haneberg, August, 2006. Effects of Digital Elevation Model Erros on Spatially Distributed Seismic Slope Stability Calculations: An Example from Seattle, Wa. Environmental & Engineering Geoscience, Vol. XH, no. 3, August, 2006, pp. 247-260. Hurr, R. Theodore, Schneider, Paul A., and Others, 1972. Hydrogeologic Characteristics of the Valley -Fill Aquifer in the Greeley Reach of the South Platte River Valley, Colorado. USGS Open File Report 93-124. Prepared in cooperation with the Colorado Water Conservation Board. Lindsay, D.A., Langer, W.H., and Knepper, D.H., 2005. Stratigraphy, Lithology, and Sedimentary Features of Quaternary Alluvial Deposits of the South Platte River and Some of its Tributaries East of the Front Range, Colorado. U.S. Geological Survey Professional Paper 1705. Lindsey, D. A., Langer, W. H., and Shary, J. F., 1998, Gravel deposits of the South Platte River valley north of Denver, Colorado, Part B - Quality of gravel deposits for aggregate: U. S. Geological Survey Open -File Report 98-148-B, 24 p. McDonald, M.G., and Harbaugh, A.W., 1988, A modular three-dimensional finite -difference ground -water flow model: Techniques of Water -Resources Investigations of the United States Geological Survey, Book 6, Chapter Al, 586 p. Miller Groundwater Engineering, June 29, 2009. Groundwater model evaluations of the Broomfield Well Field. Letter report to Dennis McGrane, Leonard Rice Engineers, Inc. Palkovic, Martin J, Lindsey, Kassandra O., Morgan, Matthew, L., 2018. Geologic Map of the Milliken Quadrangle, Weld County, Co. U. S. Geological Survey Open -File Report 18-02, 2 plates. Robson, S.G., Heiny, J.S., Arnold, L.R. 2000. Geohydrology of the Shallow Aquifers in the Fort Lupton- Gilcrest Area, Colorado. USGS Hydroologic Investigations Atlas HA -746-C. Sheet 2 of 5 — Altititude and Configuration of the Bedrock Surface. Smith, Rex O., Scheider, Paul A., Petri, Lester R., 1964. Ground -Water Resources of the South Platte River Basin in Western Adams and Southwestern Weld Counties Colorado., U.S. Geological Survey Water Supply Paper 1658. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 19 of 58 APPENDIX A - TABLES (not in text) cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 20 of 58 Table Al — SEO Well Data Used for Hvdroloic Analysis (1 of 4 Permit Number Applicant Name COSPN_ X COSPN_ Y Well Use Well Depth (ft bgs) Depth to Bedrock (ft bgs) Bedrock Elev. (ft bgs) Yield (gpm) SWL (ft bgs) SWL Elev. 5-WCB MONGOMERY, VIOLET 3184314 1351748 40 40 4685 - 8 4717 633-WCB BETZ, CARL 3189427 1362510 32 32 4700 300 9 4723 62457-DW FISCHER CONSTRUCTION 3179208 1346200 Dewatering 32 299322 BOOS, DONALD C 3184363 1345660 Domestic 60 268087 EATON CATTLE CO 3191792 1356688 Domestic 60 268086 HS LAND & CATTLE LLC 3191792 1356688 Domestic 30 268085 HS LAND & CATTLE LLC 3191862 1356664 Domestic 65 266836 CLARK GLENN & SANDRA 3182981 1343797 Domestic 60 232159 HENDERSON CONVENIENCE, LLC 3189642 1352388 Domestic 71 225280 GURLEY, GORDON 3187424 1343693 Domestic 40 187426 GUTFELDER, BEN L 3189434 1348160 Domestic 187425 GUTFELDER, BEN L 3187081 1349373 Domestic 185466 EATON CATTLE CO 3189778 1350512 Domestic 31 155687 BERNHARDT, HERBERT 3187538 1357432 Domestic 21288 BAIER, JOHN H 3183700 1347234 Domestic 38 17583 HILDENBRANDT P L MRS 3183718 1344593 Domestic 48 17919-A HAREN THOMAS & CYNTHIA 3199325 1354611 Domestic 69 125566-A FARM BOY INC 3193791 1349232 Domestic 59 297336 KISSLER, JAMES D 3199436 1354355 Domestic 69 293470 ZABKA FARMS INC 3197391 1351934 Domestic 70 287458 LARA, REYMUNDO 3197578 1357305 Domestic 75 260981 WIEDEMAN ROBERT& ESTHER 3193505 1349072 Domestic 90 251239 COGBURN NORM &JUDY 3196095 1349392 Domestic 30 207916 INGRAHAM, JOSHUA G. 3200120 1354708 Domestic 200 155183 WADDLE, RANDELL 3192134 1345135 Domestic 80345 KAMMERZEL, GEORGE 3191831 1361802 Domestic 74711 KAMMERZELL JR GEORGE 3191832 1362153 Domestic 53399 TUCKER SHELTON & ELOISE R 3192553 1359589 Domestic 17919 KCB LLC 3199397 1355113 Domestic 71 17101 INGERSOLL, LYLE 3189685 1341190 Domestic 40 21774 HODGSON, ALBERT 3194121 1359071 Domestic 30 27 4679 275938 HS LAND & CATTLE LLC 3189490 1352792 Domestic 59 58 4692 80345-A KAMMERZELL, GENE 3191831 1361802 Domestic 58 57 4650 15 20 4687 51636 TITCHENELL SR, JAMES E. 3192458 1358491 Domestic 34 32 4680 15 7 4705 268245 BETZ CLIFFORD & TRACY 3188231 1358362 Domestic 135 97 4634 100 26 4705 74711-A KAMMERZELL, GENE 3191807 1362152 Domestic 60 55 4671 30 20 4706 279370 JANECZKO, MICHAEL 3189246 1357432 Domestic 45 35 4678 15 6 4706 155687-A BERNHARDT, HERBERT 3187538 1357432 Domestic 25 19 4697 12 9 4707 225934 KNUTSON, RANDALLC 3194620 1355466 Domestic 50 45 4694 15 29 4710 267998 BUCKENDORF MATTHEW & SUSAN 3197755 1355639 Domestic 80 75 4665 14 28 4712 96112-VE BOHLING, FATIMER 3190443 1362273 Domestic 60 - - 15 18 4713 279437 NELSON CHARLES & PHYLLIS C 3195629 1355410 Domestic — — — 14 29 4714 287458-A LARA, REYMUNDO 3197519 1357328 Domestic 51 — — 23 25 4714 1123 CAW EQUITIES LLC (LEMBKE, ROBERT A.) 3195517 1351127 Domestic 34 — — 15 34 4714 216684-A KARBOWSKI, RICHARD S. 3191992 1352433 Domestic 60 58 4691 15 34 4715 279438 OWENS, TOMM 3197132 1355419 Domestic 50 - - 15 26 4715 267999 HAREN THOMAS M & CYNTHIA 3197877 1356440 Domestic 80 75 4664 13 19 4720 23014 BRECKON, HOWARD W 3191502 1351098 Domestic 62 60 4689 15 28 4721 267997 WIEDEMAN CRAIG L & MICHELLE L 3197762 1354940 Domestic 80 75 4666 12 20 4721 187425-A GUTFELDER, BETTY A. 3187077 1349373 Domestic 55 51 4701 15 28 4724 185466-A EATON CATTLE CO 3189498 1350501 Domestic 60 57 4698 15 30 4725 251239-A HARDING CHARLES H & JULIE N 3196093 1349392 Domestic 60 58 4702 15 35 4725 297336-A KISSLER, JAMES D 3199382 1354371 Domestic 83 81 4670 15 24 4727 293470-A ZABKA FARMS INC 3197476 1352043 Domestic 62 58 4691 15 20 4729 187426-A MORAN, TERESA 3189430 1348160 Domestic 60 59 4701 15 31 4729 204050 JENKINS MARK & KAREN 3185519 1348707 Domestic 45 41 4708 15 19 4730 260982 WIEDEMAN ROBERT& ESTHER 3194539 1349103 Domestic 90 - - 14 25 4731 21288-A DANIELS, MARK J. 3183501 1346651 Domestic 54 — — 15 29 4732 560-WCB NESOM, ALBERT 3200717 1355124 Domestic 94 94 4654 — 15 4733 84422 FRITZLER, EDWARD J 3189675 1341241 Domestic 77 — — 8 39 4734 155183-A WADDLE, RANDELL 3192144 1345136 Domestic 58 57 4708 15 31 4734 225280-A GURLEY, GORDON 3187424 1343673 Domestic 60 59 4708 15 32 4735 206387 FRANK, ALLAN 3186853 1346714 Domestic 52 50 4710 15 23 4737 cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 21 of 58 Table Al — SEO Well Data Used for Hvdroloic Analysis (2 of 4 Permit Number Applicant Name COSPN_ COSPN X Y _ Well Use Well Depth (ft bgs) Depth to Bedrock (ft bgs) Bedrock Elev. (ft bgs) Yield (gpm) SWL (ft bgs) SWL Elev. 270080 ARIAS, MICHAEL J. 3184442 1346854 Domestic 60 50 4712 15 23 4738 266836-A CLARK GLENN & SANDRA 3182981 1343797 Domestic 50 48 4719 15 28 4739 155183-A DEROO, BRAD 3192134 1345214 Domestic 60 53 4712 15 26 4739 1336 HANSEN, CASTOR 3191567 1347134 Domestic 60 - - - 20 4739 208693 BOOS, DON 3186895 1345028 Domestic 51 50 4715 15 23 4742 14539-R BOOS DONALD C & BARBARA 3186993 1343853 Domestic 60 60 4709 - 25 4744 184198 MARTINDALE JOHN & DELORES 3184822 1343796 Domestic 60 58 4706 15 20 4744 300729 EVANS, WILLIAM C. 3184502 1346194 Domestic 55 52 4710 15 14 4748 287838 VILLALOBOS, JOSE 3187288 1341014 Domestic 80 68 4704 15 17 4755 281801 MARTINDALE, DELORES 3186894 1341029 Domestic 72 69 4704 15 15 4757 282403 MARTINDALE, DELORES 3186852 1338648 Domestic 52 262824 PTASNIK, MICHAEL 3181481 1343929 Domestic 232768 ELMORE, STAN 3185981 1359627 Domestic 169399 SCOTTDALE RANCH 3181539 1344105 Domestic 54 4933 BERNHARDT, BEN 3186255 1359035 Domestic — 35 4705 232768-A LONG, CLIFTON 3185981 1359627 Domestic 48 39 4706 15 18 4727 169399-A PTASNIK MICHAEL & JOY 3181539 1344095 Domestic 54 52 4714 7 27 4739 262824-A PTASNIK, MICHAEL 3181500 1343929 Domestic 60 49 4719 15 25 4743 93438 RICE HAROLD E & DORIS A 3187167 1338572 Domestic — — — 15 26 4751 5124 RUTT, ELMER 3180986 1355067 Domestic 45 43 4803 - 15 4831 81-R BERNHARDT BEN & ESTHER 3187504 1359044 Irrigation 15 738-R MICHEL, REUBEN 3192770 1357687 Irrigation 27 7164-R HS LAND & CATTLE LLC 3187635 1347125 Irrigation 54 42519-F BERNHARDT, DAIRY 3184728 1351757 Irrigation 22306 -F -R BOOS, DONALD C 3186814 1345174 Irrigation 60 19924-V EPPINGER LINDA KAY 3190201 1349774 Irrigation 62 19924-R PHELPS, WILLIAM E 3188861 1351089 Irrigation 55 14477-F KASTEN CHERYL L & CARLENE M KASTEN 3182972 1352168 Irrigation 13688-R RED TIERRA EQUITIES, L.L.C. (LEMBKE, ROBERT) 3192832 1352427 Irrigation 12462-R SCHMIDT ROY A & MELVIN C & CLARENCE 3192800 1355046 Irrigation 49 10223-R UNITED WATER & SANITATION DIST 3195480 1355076 Irrigation 64 10222-R UNITED WATER & SANITATION DIST 3195480 1355076 Irrigation 50 10044-R HS LAND & CATTLE LLC 3191482 1352419 Irrigation 75 955-WCB BISKAS, NICK 3186387 1340528 Irrigation 52-R UNITED WATER & SANITATION DIST 3199397 1355113 Irrigation 93 51-R SMITS MARTIN & CECILIA 3199423 1355115 Irrigation 91 50-R SMITS MARTIN & CECILIA 3199397 1355113 Irrigation 90 20461 -T -R TITCHENELL SR, JAMES E. 3192785 1359150 Irrigation 29 20461-T MCMILLEN F DEE 3192749 1359151 Irrigation 30 13671 -F -R RED TIERRA EQUITIES, L.L.C. (LEMBKE, ROBERT) 3196151 1351821 Irrigation 63 13660-R CENTRAL COLORADO WATER CONSERVANCY DI 3191567 1347134 Irrigation 13640-F RED TIERRA EQUITIES, L.L.C. (LEMBKE, ROBERT) 3194891 1351768 Irrigation 63 10989-R WIEDEMAN, TERRY 3192913 1345820 Irrigation 96 4460-R PEVONKA JAMES E & ROSALIE R 3191426 1356355 Irrigation — 34 4678 20461-R HODGSON, ALBERT 3192754 1359074 Irrigation — 30 4681 7643-F MICHEL, REUBEN 3192770 1357687 Irrigation 27 25 4687 15499-F BERNHARDT, JACOB 3187683 1359814 Irrigation 35 35 4705 250 14042-R FRANK, JANICE 3186685 1346496 Irrigation 60 - - 900 54-WCB HANSEN, CASTOR 3189633 1346469 Irrigation 60 60 4703 900 8818-F HS LAND & CATTLE LLC 3191462 1353726 Irrigation 63 60 4684 1119 8302-R KAMMERZELL, GENE 3190651 1361021 Irrigation 48 47 4662 1800 12 4697 20461 -R -R HODGSON, LEE 3192794 1359536 Irrigation 32 27 4684 450 10 4701 13701-F BERNHARDT, HERBERT B 3187341 1355674 Irrigation 35 — — — 15 4701 23881-F BERNHARDT, J 3189510 1359836 Irrigation 39 38 4676 1350 11 4702 739 -R -R FRONT RANGE LAND & LIVESTOCK 3192086 1357876 Irrigation 27 26 4686 525 8.5 4703 14523 -R -R BETZ CLIFFORD H & TROY L 3188578 1357434 Irrigation 40 38 4673 1200 7 4704 591-WCB RYAN, MARY 3191426 1356355 Irrigation 34 34 4678 1000 7 4705 739-R FRONT RANGE LAND & LIVESTOCK 3192770 1357687 Irrigation 30 25 4687 - 7 4705 15094-R MICHEL, REUBEN 3192770 1357687 Irrigation 27 25 4687 — 7 4705 848-WCB MICHOL, REUBEN 3192770 1357687 Irrigation 30 25 4687 1000 7 4705 13042 -R -R WEBER, WAYNE 3201122 1354591 Irrigation 82 — — 1400 43 4706 14523 -R -R EHRLICH FEEDLOT INC 3188430 1357278 Irrigation 40 34 4678 1200 6 4706 14523-R PHELPS INVESTMENT CO 3188768 1357661 Irrigation 40 - - 1200 6 4706 62-WCB HANSEN & PURSE 3179713 1347320 Irrigation 62 61 4670 1200 24 4707 cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 22 of 58 Table Al — SEO Well Data Used for Hvdroloic Analysis (3 of 4 Permit Number Applicant Name COSPN_ X COSPN_ Y Well Use Well Depth (ft bgs) Depth to Bedrock (ft bgs) Bedrock Elev. (ft bgs) Yield (gpm) SWL (ft bgs) SWL Elev. 10682-R CULLOR, RACHEL F 3189000 1341842 Irrigation 97 — — — 22 4746 10682 -R -R CULLOR, RACHEL F 3189000 1341842 Irrigation 92 — — 1000 22 4746 10747-R PTASNIK MICHAEL & JOY W 3183718 1344593 Irrigation 68 — — 1200 20 4747 10746-R PTASNIK MICHAEL & JOY W 3183718 1344593 Irrigation 65 — — 1300 20 4747 13420 -R -R WESTERN EQUIPMENT & TRUCK INC 3189829 1338650 Irrigation 89 89 4688 1200 27 4750 13421 -R -R WESTERN EQUIPMENT & TRUCK INC 3190810 1338601 Irrigation 72 71 4710 935 30 4751 433-WCB LINDEN, CARL 3190309 1343174 Irrigation 97 — — 850 18 4751 20079 -S -R FRANK, VIOLA 3194094 1342405 Irrigation 91 89 4684 1100 21 4752 1747-R ASCHENBRENNER WILLIAM & PATRICIA J PAUL 3190309 1343174 Irrigation 98 — — — 16 4753 11024-R MARTINDALE JOHN A & DELORES O 3187710 1339187 Irrigation 60 - - - 15 4759 7026-R BRIGGS, CHARLIE 3186407 1337899 Irrigation 6371-R BESKAS NG TRUST 3186837 1338558 Irrigation 13626-R PTASNIK, MICHAEL 3183739 1341958 Irrigation 60 11494-R PTASNIK MICHAEL & JOY W 3182404 1342014 Irrigation 60 11493-R OSTER, CHRIS C 3182404 1342014 Irrigation 60 11418-R MONFORT FEED LOTS INC 3197886 1363026 Irrigation 26 — — 600 5 4693 272-R SHABLE, ALVA L 3192446 1364493 Irrigation 42 — — 1200 19 4697 250-R AGGREGATOR LLC 3195071 1364449 Irrigation 42 — — 2500 13 4697 11419 -R -R FIVE RIVERS RANCH CATTLE FEEDING LLC 3199442 1362465 Irrigation 61 — — 143 28 4699 13272 -R -R FIVE RIVERS RANCH CATTLE FEEDING LLC 3202383 1357245 Irrigation 70 69 4673 800 42 4700 12065-R KAMMERZELL ANNA & GEO 3189214 1365679 Irrigation 42 — — 1000 9 4702 12740 -R -R ECKHARDT FARMS INC 3206775 1356221 Irrigation 104 102 4633 1250 33 4702 8895-F MONFORT FEED LOTS INC 3200648 1361742 Irrigation 65 — — 600 26 4704 8577 -R -R WESTERN EQUIPMENT & TRUCK INC 3204561 1357449 Irrigation 74 72.5 4668 900 36 4705 13437-R MONFORT FEED LOTS INC 3201979 1360439 Irrigation 63 — — 1350 22 4708 13427-R FIVE RIVERS RANCH CATTLE FEEDING LLC 3199287 1359070 Irrigation 65 — — 1000 22 4710 13438-R FIVE RIVERS RANCH CATTLE FEEDING LLC 3201325 1359788 Irrigation 60 - - 1350 22 4711 2526 -F -R GRAHAM, DOUGLAS 3207755 1352514 Irrigation 110 104 4631 673 23 4712 11588-R MOSIER, KATHRYN 3208230 1351753 Irrigation 83 — — 1200 22 4712 12740-R ECKHARDT LILLIE MRS 3206775 1356221 Irrigation 73 — — 700 22 4713 19923-R NESOM ALBERT & ANNE 3206092 1355231 Irrigation 72 — — 750 25 4713 13118-F GILCREST TOWN OF 3201726 1347053 Irrigation 90 - - - 35 4714 620 -R -R FRITZLER REAL ESTATE LLC 3206115 1352620 Irrigation 99 99 4638 1200 23 4714 634-WCB BERNHARDT, JACOB 3187483 1360432 Irrigation 35 36 4701 250 19 4718 248-R KAMMERZELL GEORGE & ANNA 3189881 1363083 Irrigation 42 — — — 10 4720 10943-F SCHAEFER CARL & VENICE 3203478 1348579 Irrigation 94 — — 800 21 4721 10482-R SCHWINDT, RONNIE 3206125 1351300 Irrigation 95 99 4639 900 16 4722 14050-R GILCREST RESERVOIR COMPANY 3179737 1344679 Irrigation 60 - - - 20 4724 16163-F NELSON, THYRA 3200007 1345496 Irrigation 98 97 4658 990 30 4725 13056-R HUNT DAVID W & KAYLEEN J 3202205 1344588 Irrigation 54 — — — 30 4728 592-WCB NELSON, HANS 3204855 1345971 Irrigation 51 — — 900 22 4731 12938-R HUNT, DAVID W. 3206147 1348654 Irrigation 34 — — 450 8 4735 11150-F FRITZLER, JACOB 3204078 1346757 Irrigation 81 — — 1000 13 4736 10449-R EHRLICH FEED LOTS INC 3184269 1360036 Irrigation 41 35 4715 280 13 4737 664 -R -R HUNT, DAVID W. 3199419 1343864 Irrigation 94 94 4667 900 22 4739 82 -R -R BERNHARDT, DAIRY 3184310 1359696 Irrigation 37 36 4717 500 13 4740 44472-F GILCREST RESERVOIR CO 3179839 1342742 Irrigation 43 42 4708 900 9 4741 11493 -R -R PTASNIK MICHAEL & JOY W 3182515 1341340 Irrigation 70 70 4702 900 30 4742 4209-F PTASNIK MICHAEL & JOY 3181066 1343358 Irrigation 52 — — 600 23 4742 12936-R HUNT, DAVID W. 3205487 1346644 Irrigation 32 — — 350 8 4743 14043-R PTASNIK MICHAEL & JOY 3181066 1343358 Irrigation 60 - - - 20 4745 664-R WATERMAN JULIUS & ZOLMAN E BROWN 3198242 1343236 Irrigation 54 — — — 15 4747 19468-R NELSON HANS B & ERNA M C & HANS B 3203711 1344041 Irrigation 66 66 4700 650 17 4749 6373-R MARTINDALE, DELORES O 3186397 1339207 Irrigation 90 90 4684 1119 25 4749 210-R WPD STORAGE LLC 3195602 1340586 Irrigation 70 70 4698 1000 18 4750 6371 -R -R MARTINDALE, DELORES O 3186837 1338558 Irrigation 54 48 4730 650 24 4754 6372-R MARTINDALE, DELORES O 3186397 1339207 Irrigation 55 55 4719 915 20 4754 14541-RF PTASNIK MICHAEL & JOY W 3183061 1340008 Irrigation 59 58 4717 950 20 4755 7025-R BRIGGS, CHARLIE 3186407 1337899 Irrigation 73 — — 800 17 4760 1504 -R -R HUNT, DAVID W. 3189838 1334656 Irrigation 50 48 4737 700 25 4760 12674 -R -R MCGLOTHLIN, MARGARET 3189070 1336624 Irrigation 56 56 4723 1100 17 4762 11158-F BROWN, ZOLMAN E 3199603 1340635 Irrigation 48 — — 400 10 4768 12564 -R -R TARIN, JOSE C 3195745 1338908 Irrigation 52 51 4723 150 5 4769 1501-R COMING, IONE 3191739 1335385 Irrigation 49 — — — 16 4770 cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 23 of 58 Table Al — SEO Well Data Used for Hydrologic Analysis (4 of 4) Permit Number Applicant Name COSPN_ X COSPN Y _ Well Use Well Depth (ft bgs) Depth to Bedrock (ft bgs) Bedrock Elev. (ft bgs) Yield (gpm) SWL (ft bgs) SWL Elev. 82-R BERNHARDT, BEN 3184945 1357668 Irrigation 40 -- -- 1500 10 4775 12053-R HUNT, DAVID V 3195651 1336730 Irrigation 47 -- -- 900 4 4778 12055-R HUNT, DAVID W. 3195651 1336730 Irrigation 57 -- -- 1000 4 4778 12565-R TARIN,JOSE C 3197146 1338685 Irrigation 10 -- -- 700 2 4779 12054-R HUNT, DAVID W. 3196972 1336732 Irrigation 47 -- -- 400 4 4784 63802-MH NOBLE ENERGY INC 3187423 1355160 Monitoring 15 -- -- -- -- -- 63296-MH J-2 CONTRACTING CO (LEONE, CHRIS) 3189653 1346609 Monitoring 65 -- -- -- -- -- 63185-MH NOBLE ENERGY INC 3187448 1355141 Monitoring 18 -- -- -- -- -- 63178-MH PDC ENERGY INC (OLSON, KAREN) 3185519 1354639 Monitoring 11 -- -- -- -- -- 63110-MH PDC ENERGY INC (OLSON, KAREN) 3186422 1355068 Monitoring 11 -- -- -- -- -- 62197-MH PDC ENERGY INC (OLSON, KAREN) 3186447 1353760 Monitoring 5 -- -- -- -- -- 22510-MH NORTHERN COLO WATER CONSERVANCY DIS 3192864 1349786 Monitoring 34 -- -- -- -- -- 325211 RED TIERRA EQUITIES LLC 3194845 1351884 Monitoring 47 -- -- -- -- -- 325206 RED TIERRA EQUITIES LLC 3194165 1354234 Monitoring 52 -- -- -- -- -- 325205 RED TIERRA EQUITIES LLC 3192973 1352114 Monitoring 53 -- -- -- -- -- 324583 MONARCH MOUNTAIN MINERALS AND AGG 3187210 1346548 Monitoring 55 -- -- -- -- -- 324582 MONARCH MOUNTAIN MINERALS AND AGG 3191512 1350298 Monitoring 60 -- -- -- -- -- 324581 MONARCH MOUNTAIN MINERALS AND AGG 3189484 1348467 Monitoring 60 -- -- -- -- -- 324580 MONARCH MOUNTAIN MINERALS AND AGG 3187792 1350076 Monitoring 60 -- -- -- -- -- 324579 MONARCH MOUNTAIN MINERALS AND AGG 3191641 1352476 Monitoring 60 -- -- -- -- -- 324578 MONARCH MOUNTAIN MINERALS AND AGG 3190150 1355025 Monitoring 40 -- -- -- -- -- 285471 GILCREST RESERVOIR COMPANY 3181150 1345896 Monitoring 41 -- -- -- -- -- 325210 RED TIERRA EQUITIES LLC 3193448 1349270 Monitoring 51 -- -- -- -- -- 325208 RED TIERRA EQUITIES LLC 3197470 1351056 Monitoring 52 -- -- -- -- -- 325207 RED TIERRA EQUITIES LLC 3197433 1353254 Monitoring 52 -- -- -- -- -- 261609 PRIMA OIL &GAS 3189687 1361068 Monitoring 23 -- -- -- -- -- 163692 CENTRAL COLO WTR CONSERVANCY DIST 3193509 1346459 Monitoring -- -- -- -- -- -- 324577 MONARCH MOUNTAIN MINERALS AND AGG 3191921 1355495 Monitoring 50 40 4686 -- -- -- 320417 LAFARGEHOLCIM/AGGREGATE INDUSTRIES (D 3191995 1361442 Monitoring 30 -- -- -- 15 4701 260892 PRIMA OIL &GAS 3189701 1360983 Monitoring 23 -- -- -- 9 4703 260893 PRIMA OIL &GAS 3189726 1360988 Monitoring 24 -- -- -- 8 4704 261610 PRIMA OIL &GAS 3189603 1360862 Monitoring 23 -- -- -- 8.5 4704 260775 PRIMA OIL & GAS 3189675 1360913 Monitoring 26 -- -- -- 5 4708 42858-MH TPI PETROLEUM INC 3194146 1352425 Monitoring 30 -- -- -- 21 4724 19084-MH NORTH FRONT RNG WTR QUAL PLNG ASSOC 3191567 1347134 Monitoring 35 -- -- -- 19 4740 61795-MH GREAT WESTERN OPERATING CO LLC 3187825 1361697 Monitoring 24 -- -- -- -- -- 38036-MH HALL-IRWIN, CONSTRUCTION 3184917 1360404 Monitoring 19 -- -- -- -- -- 38034-MH HALL-IRWIN, CONST 3183624 1357678 Monitoring 19 -- -- -- -- -- 316916 UNITED WATER AND SANITATION DISTRICT 3179684 1344940 Monitoring 43 57 4687 -- -- -- 316920 UNITED WATER AND SANITATION DISTRICT 3179766 1343608 Monitoring 46 45 4701 -- -- -- 316918 UNITED WATER AND SANITATION DISTRICT 3179797 1343604 Monitoring 45 44 4703 -- -- -- 316917 UNITED WATER AND SANITATION DISTRICT 3179633 1344936 Monitoring 40 40 4703 -- -- -- 316921 UNITED WATER AND SANITATION DISTRICT 3178855 1344919 Monitoring 37 37 4706 -- -- -- 316926 UNITED WATER AND SANITATION DISTRICT 3178636 1345679 Monitoring 33 33 4707 -- -- -- 316925 UNITED WATER AND SANITATION DISTRICT 3178644 1345631 Monitoring 33 33 4708 -- -- -- 64179-DW FISCHER CONSTRUCTION 3179874 1344856 Monitoring 37 -- 4750 -- 6 4744 285473 GILCREST RESERVOIR COMPANY 3180722 1343484 Monitoring 31 -- -- -- 10 4745 11685 -R -R HILL, V 3194180 1349792 Municipal -- -- -- -- -- -- 2005102-AB BUYS & ASSOCIATES 3189513 1360946 Other -- -- -- -- -- -- 2005090-AB BUYS & ASSOCIATES 3189332 1360864 Other -- -- -- -- -- -- 2005103-AB BUYS & ASSOCIATES 3189593 1360952 Other -- -- -- -- -- -- 2005100-AB BUYS&ASSOCIATES 3189737 1361027 Other -- -- -- -- -- -- 2005099-AB BUYS&ASSOCIATES 3189692 1361064 Other -- -- -- -- -- -- 2005098-AB BUYS&ASSOCIATES 3189705 1361046 Other -- -- -- -- -- -- 2005097-AB BUYS&ASSOCIATES 3189764 1361003 Other -- -- -- -- -- -- 2005096-AB BUYS&ASSOCIATES 3189595 1361020 Other -- -- -- -- -- -- 2005095-AB BUYS&ASSOCIATES 3189593 1360947 Other -- -- -- -- -- -- 2005094-AB BUYS&ASSOCIATES 3189736 1360908 Other -- -- -- -- -- -- 2005093-AB BUYS&ASSOCIATES 3189659 1360853 Other -- -- -- -- -- -- 2005092-AB BUYS & ASSOCIATES 3189649 1360995 Other -- -- -- -- -- -- 2005091-AB BUYS & ASSOCIATES 3189575 1360917 Other -- -- -- -- -- -- 63753-F CENTRAL COLORADO WATER CONSERVANCY DI 3197992 1351889 Other 72 -- -- 1250 34 4719 2005101 -AB BUYS & ASSOCIATES 3189554 1364066 Other -- -- -- -- -- -- 538-WCB ROOT, CHARLES 3191444 1355035 Stock 31 30 4697 5 18 4709 3740 OWENS TOMM & DEBORAH 3196800 1355090 Stock 61 -- -- -- 26 4716 Count 324 283 118 -- 167 204 -- M i n 5 19 -- 5 2 -- Max 200 104 -- 2500 43 -- Average 58 56 -- 693 21 -- cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 24 of 58 Table A2- SVRC Monitoring Well Water Levels Well Designation Existing Monitor Well JT MW -1 JT MW -2 JT MW -3 Description Southwest Corner Northwest Corner Northeast Corner Southeast Corner Top of Well Elevation (ft) 4765.11 4754.77 4757.78 4763.64 Ground Elevation (ft) 4762.38 4752.57 4755.56 4761.50 Date Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) October 26, 2023 16.17 13.44 4748.94 November 17, 2023 17.25 14.52 4747.86 17.00 14.80 4737.77 17.96 15.74 4739.82 16.00 13.86 4747.64 December 22, 2023 18.63 15.90 4746.49 18.10 15.90 4736.67 18.83 16.61 4738.95 17.25 15.11 4746.39 January 20, 2024 19.54 16.81 4745.57 18.92 16.72 4735.85 20.00 17.78 4737.78 18.25 16.11 4745.39 Note: December 22, 2023 water levels used in Pre -pit Run model calibration Table A3- Section 20 Monitoring Well Water Levels (From J&T Consulting) Section 20 Groundwater Monitoring Program* Monitoring Well Date Measured' MW -1 MW -2 MW -3 MW -4 Drilling estimate 11/4/2021 25 24 :. 12/28/20211 26.4 25.5 3/16/20221 26.6 25.9 , 1 5/23/2022 26.7 25.7 6/22/2022 26.7 24.4 7/15/2022 28.6 24.4 Date Measured, MW -1 MW -2 12/28/2021 4,725.90 4,717 50 4,723.70 4,728.60 3/16/2022, 4,725.70 4,71710 4,72340 4,728.70 5/23/2022 4,725.60 4,717 30 4,724.20 4,730.80 6/22/2022 4,725.60 4,718 60 4,724.90 4,732.90 7/15/2022 4,723.70 4,718 60 4,726 10 4,732.50 MW -5 MW -6 MW -7 27 28.8 28.6 27.8 26.3 26 ............... MW -7 ................ 4,733.90 4735.3 4,726.82 4,733.90 4735.5 4,727.02 4,735.90 4737.5 4,727.82 4,736.50 4738.8 4,729.32 4,736.90 4739 4,729.62 14 22..2... 22 ..... 20 18.7 18.5 MW -6 Notes: *All measurements are from table provided in Final Report 120222 - Part 139.pdf **December 28, 2023 water levels used in Pre -pit Run model calibration Tables A4 - A8 in Text cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 25 of 58 APPENDIX A - FIGURES cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com Page 26 of 58 4N 66W , a634-wCB t r I o• s33-wcgl 15499-F • P- u 83-R 0 —" -,� r ' , .4268245 -' .•+..w 4i i 'r4523;RRS�: ".; �. g;.1 70%,"' N�145�274R, x,841-WCB ., 1 - �13701'�F' ' 10,4-1 es )►.t A 41.- '413703-R ot9924-R-R • ..� .' .a a r ,279938 232159 °10045-R o x`28461 -R -R 20461 -T -R 51636 _Fp738-R 15094-R 848-WCB. . } ft� r2 S '"' . -i }4. cl+ 1`}. ii �r''A �. . l • r .•10. • ✓ ■' 2.5144 ! � - } r r1 4 pfd ' 021 4 j 10475-R 8967-F o 2680I7c6248,085 8083 68086 4=R,e591-wc8 A,oy , 538-wca - 1565B 0 �R_487=WCB ` nLEIi 8818-F ''. Imo., J 10044R --2166134-:A_ 3688-R r�18e 23014 FIGURE Ala 5Ea Well Data Used for Hydrogeologic Analyses Weld County, Colorado Sources: ly JT Consulting Pit outlines; 2j Barkmann, 2614, Table 2017TH -1; Goagfe Earth Imagery (2021); USGS DEM 10m; CDSS Well Database Map Legend DWR Wells - by use type • Domestic/Stock n Irrigation • Dewatering/Other/NA r _I Study Area Model Area *Standing water per Google Earth Image June, 2021 R AIR 1261I_ -R o $a 278183-A 4 013426-R 10476-R 67808-F _ _ o o - 279437. a 10223-R 10222-R' ASW-2 5' 11 13427-R° s • . 29974-F p 55663=F 7458 A 29923 -F 455664 -F 55664-F la 4 � 5279438 3740 Y 62679i8 �Zs7997 321654' . • t'�• Western Canal Eastern Slough* Western Slough' Lined Section 20 Pit Lined Monarch Pit • I t- _ 4 "41thl 2677999 50-R:R • o - 29 336 A O Section 20 Pit MW Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 27 of 58 , .� _, OD F • R▪ 1 'r '1 •�.J - 267998 . .} Ky ^ ' x779437 ; 27,843.8., b 1022 R .10222-R.;3740,1 267997 " , ,52 ; : 321654' ,! �. _ —.• • 1' ; ; ; 1791 t - 50 -R -R 13690-R :1 ��260982 x1123 Western. Canal ..r 10988 -'R -R _ ',.7983141107.im• I1 I -V - 20031-R 20031-S o 20031-T PAN -4 11;231)67 1 952 -R -R p 24179 953 -R -R • 4N 66W £3730-F y 13044 -R -R . 1,042 -R -R p466-WCB 4143=F 5 -WC x5819 -R -R F 297336-A , z?899.$ryr 7 5440-_F 47534- 4 �- — , • i 6'" •• ,.118844 63753-F • .?', Eta-WCB' ' a e' s 209-R 59953-F 63758-Fz13 637 11.101 ^Q631 -R • _632-R L liT91-R-R - !'0 287311. ° 6132-R 59952-F X619 -R - 623 -R -R 76r� O11324 -R x98.'r B I 14969 -R -R 342 r, � 0407 -WC 187-A 112135624 535-WCB irr. - s• „ B7 IIIL- -114' Z7041 F 63- x▪ = 665` CBV432iWC " 4fe . 4!"_',7'1 10 Iv - 59739-F 74968&R F� �118•�„A � ;x"-''13149-F,R r; • 5 4838-F--_ .7.;-•16-04.V. 1390-R •`mss-�. t:: A 644-WCB �• 773605-A .43.342 • -14418 49286 6213308-A - 5 , X3$07 A 2n496-A- CBo12939-R °12938-R t. .091150-F Q 592-WCp ° - ,320x15 -R -R f t T . 3607-F ^ : .500-wCB 60564...500 1,000 / 2,000 130T.lt "13058-I - Feet s: FIGURE Al b 5Ea Well Data Used for Hydrogeologic Analyses Weld County, Colorado Sources: ly JT Consulting Pit outlines; 2j 8arkmann, 2614, Table 2017TH -1; Goagfe Earth Imagery (2021); USGS DEM 10m; CDSS Well Database Map Legend DWR Wells - by use type 0 Domestic/Stock Irrigation 4 Municipal a Dewatering/Other/NA r- :1 Study Area Q Model Area *Standing water per Google Earth Image June, 2021 Western Canal Eastern Slough* l= Lined Section 20 Pit 0 Section 20 Pit MW Data: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 28 of 58 4N 6'W 4N 66W z z m 0 7164-R 2063,87 06 -FA _ 693 ❑ -y ❑ 13659-R ;71654 , OJT -MW -4 .•54WCB •58MCB; }• ▪ �I t A - 39-R - A 2252 Q-A Q —:81801 287838 242403' a 93138 6=71 -R -R -188144 r� 94863-A 1 r - 1746 -R -R .t 433-WCBo1747-R I iRR .... '42980 7.fii73-F 84422471 1 76274-F 13419 -R -R 44657 44658-A O13418 -R -R n13420 -R -R _ 1342t.R $. - O12674 -R -R "I 4` O 5649-F • y 27¢_A 76 _" ,1504 -R -R s � 5E10 Well Data Used for Hydrogeologic Analyses Weld County, Colorado Sources: 1) JT Consulting Pit outlines; 2j Barkmann, 2014, Table 2017TM-1; Goagfe Earth Imagery (2021); USGS DEM 10m; CDSS Well Database ❑ 1336 JT-MW3 13660-R _ _.. p I WCB ❑ ; M 2®0980 -56374kE40- irr - 77041-F FIGURE Alt • X8056 -FAG t"2 alA Y." - - 8 63 1098�7aR R_, I OI ,. �t�! 4003 4020031-V j 75712-F 10987-R 55614 Map Legend DWR Wells - by use type • DomesticiStock o Irrigation • Dewatering/Other/NA r _1 Study Area Q Model Area *Standing water per Goggle Earth Image June, 2021 200331-R 20031-g o 13 20031-T ❑1589 -R -R 20079-T ❑1590 -R -R 49494-F �. - _it 2i0 -R f3 I ! Lined Monarch Pit 0632-R 4838-F 644-WCB �. 41 791 -R -R - •'Jo 287311 44' 664 -R -R 665 -R -R - • ° 6132-R I. `2207.7 93952 305023 K ill 256543 3607-F Sweet Valley Reservoir Complex MW Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet r •••, Page 29 of 58 4N 67W 4N 66W • 21. •-k. ., d• - _y atS, ' ,• , • o. r �r` • ,•r r' ~ �' r •: a FIGURE A7d 5Ea Well Data Used for Hydrogeologic Analyses Weld County, Colorado • O c� 5-WCB ,;b 42519-P �' I • _ - - •n. � �•K.. .r pe art' 4• F r I' T/ • -•eGr i • �� 204050 140449•R ° ,f • 14041-R 270080 621288-A :61-VCB.- �300T29 0 3-WCB O299322 • r :.r . Id •R, +, 17583x10746 -R 1' 10747-R% 1 f 1y- 0. A ' 266836-A•-� 184198 d f °' ci 399-A o 11494-R - O11493 -R -R '17584-A Sources: 1) JT Consulting Pit outlines; 2j Barkmann, 2O14, Table 2O17TM-1; Goagfe Earth Imagery (2021); USGS DEM 10m; CDSS Well Database r o1 R n ❑ 287838 Map Legend DWR Wells - by use type a Domestic/Stock n Irrigation • Dewatering/❑ther/NA r _1 Study Area Model Area *Standing water per Google Earth Image June, 2021 e• • 4 3743=R •-- ',187425-A o- 4026 -R 1 o .>.- ir!" - 232159 010045-R • D19924 -R -R ;1185466-A _ 19924 -V -R 019924-U JT-MW1 1,111 ' _ 111137R ,• • - '� 187426-A �08f� 0 164-R M0:�6387 014naA:1 1114 . -- &30.6.fA 0208693 rf 1-_ R - �. � +-_22 80-A--• h 0 7165:R 13659-R ••5- ° 13661-R rr-new-d y ' � awCB . . �-58=WCB, y• I r. I '• r1 4‘ . • —181801 w�:s - o soo r Western Canal •�`.�� Western Slough* Lined Sweet Valley Reservoir Complex Pit 1 Lined Monarch Pit It r • I 60' it , . 433-WCB 1747-R• i ;r • 76273=F 84422 117 p� 76274-F • Sweet Valley Reservoir Complex MW ❑ Well WL-M-001 [ref. 2] Data: January 2O24 Datum/Projection: NAD83/Colorado State Plane North, feet • u •. ''•••••• . Page 30 of 58 Qa3 / • 19 . 437 1-481 / �. / 19 ,e-40 of A, / / / 45 Qgi / / Qe Kfh Qe 32 33 ■33 3T® 40 S 31 �` . A ' • 45,43 \` C\ • FIGURE A2 Qa of - 38 54 -k1,r a21 . 1 Qaz ■ Qa1 40 40 601 /4.4.5 a 42. 32 0 _ A .=60: 24 , • ❑ i 2�J4 35 X324 A35 5 l I ,A 64 65 Pi I27 334 5..▪ .487 51 40 +0�3®7 ', 75 ' 0.0 40 S 65 80 394r /4.—/ A . , 35 42 3j14.50,..--___./1___50„,--'5080 A 18' r _ - 0 _;31 49 61 A 64 A ® 93 94 80 94. • � A. 50448 050 ❑61 A 0.,69© Western Carnal m a/. "�. 63 A50 1,l4: 70 75 0 67 .■ 4 ..,1 71 50 . 58 62 34 I ■ , `. 3 ■ 72 ., = 0 2 84 A1Y02a 31 ■ 52 • 05 - 42 640. A „. 58Y-0 2 p82 _ 52 ` -:60s 58;: 60 64608 60 50"a 55 49 ❑ 60 65 68 A48.: so ° so Aso ❑ 60 5 60. 7 A3 oatte coo 52 60 60 90 X90, fi0 ` -54` . 57 47 35 A 0, 65 ❑ 60 62 ° 60 96 A- 6p. A06 96 990 A 51 58 IL58:: 60 � 3 : .�97 A 3 .. 40 060. ` ©998 • 20 Qa3 A. f 80' 558'�.g0 4 •. . 9792 ❑ 56 89 . 50 mil- � 72 _AS= f ❑70 ®26 wl . Ati,=.65 52 2 7 a74 91 369 �• N6 60 3 t ❑ •• 82. A • • • 7 • • • •13 T0( 72 -90 a ®102 A0 ®4 GILCRE5T ®80 ❑94 © 1 ®3/ 51/ ♦ ®8 Qe ❑/ 54 I © V 94 o p J A48 / 10 / / 99 110 A34 / / I 57 ®4/ / ❑ / A 0 0.25 0.5 1 Mile Surficial Geology and Well Depth Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; Milliken Quadrangle Geologic Map OF -18-02, Palkovic et al. (2018) Map Legend Q Model Area _. Study Area DWR Wells - Well Depth (ft) • < 25' A 25' to 50' ❑ 50' to 75' A 75' to 100' A > 100' 0 Western Canal Eastern Slough* Western Slough* Lined Sweet Valley Reservoir Complex Pit Lined Section 20 Pit Lined Monarch Pit Geologic Unit (modified from: OF -18-02) © Disturbed Alluvium Eolian Ground (dg) Three (Qa3) sediment Artificial Fill Gravel (Qe) (af) deposit One Conglomerat Alluvium (Qgi) (OgMiC) (Qa) Gravel Fox Hills SS Alluvium deposit Two (Kfh) One (Qai) (Qg2) Alluvium Two (Qa2) *Standing water per Google Earth Image June, 2021 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 31 of 58 4N 67W FIGURE A3 L4708 i "4.70.3%, 4704 o. Bedrock Elevation Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); IJSGS DEM 10m; COSS Wefl Database; Robson (200O) 4687 4678 6 8 468fi 4694 467 '..• 4689, _ 4694 r y' 4684 .' '4692 +• • _ 4691 ' 4fi9i "_ F4 - - yi .c^' 64690 -' 4668 • 4708 4675 4N 66W 4723- t.w 4658 4673 tr- Map Legend r Study Area [3 Model Area DWR Well with Bedrock 0 Elevation Data — Western Canal S- Eastern Slough* ''•,. Western Slough* Lined Sweet Valley Reservoir Complex Pit [] Lined Section 20 Pit ��.J Lined Monarch Pit Bedrock Elevation 'N.) Contour (revised from Robson [2000]) *Standing water per Google Earth Ima+e June, 2021 Date: January 2O24 Datum/Projection: NAD83/Colorado State Plane North, feet Toy ' a -"y ',—.4 ti -1 .- cam/ A •••, Page 32 of 58 3 r- z FIGURE A4a Year 2000 Water Table Weld County, Colorado Sources: (1) Civil Resources LLC, October 14, 2022. Memo to Robert Lembke titled "Modification to Model in Response to DRMS Comments."; (2) Barkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fig. 10; (3) J&T Consulting Monitoring Well Data; Robson, 2000; ESRI Worfd Imagery (2021); USGS DEM 10m Map Legend r _1 Study Area 0 Model Area Section 20 Pit ❑ Monitoring Well - Summer 2022 (ref. 1) Stream Point Elevation' V r {L • A6 Mi�te O DWR Well with SWL Data Western Canal 2.." Eastern Slough* Western Slough* Lined Sweet Valley Reservoir Complex Pit Meining Monitoring Well Q Lined Section 20 Pit D - Observed November Lined Monarch Pit 2023 (ref. 3) • - .1 • 1` al • Water Table Contour (revised from Robson [2000]) interval = 20' *Standing water per Google Earth Image June, 2021 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet cr- a ti. o '.► . Page 33 of 58 FIGURE A4b Recent Water Table Weld County, Colorado Sources: (1) Civil Resources LLC, October 14, 2022. Memo to Robert Lembke titled "Modification to Model in Response to DRMS Comments."; (2) Barkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fig. 10; (3) MT Consulting Monitoring Well Data; {4) Barkmann, 2014, Table 2017TM-1 ESRI World Imagery (2021); USGS DEM lOm Map Legend r : Study Area 0 Model Area b Stream Point Elevation" Meining MW — Observed November 2023 (ref. 3)* Section 20 Pit MW - CI Observed December 2021* (ref. 1) 0 Weil WL-M-001 (ref. 4) 0 DWR Well with SWL Data Water Table Contour - Western Canal Eastern Slough* Western Slough* Lined Sweet Valley Reservoir •, Complex Pit Lined Section 20 Pit Lined Monarch Pit interval = 10' (ref. 2) CGS (2012) Figure 10 Spring 2412 WT Modified contour based on SVRC Dashed where inferred (ref. 2) *Standing water per Google Earth Ima+e June, 2021 Data: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet A ',Ws. Page 34 of 58 0634WCB 268245 FIGURE A5a 633-WCB rr r� l' a 75938 232159 010045-R 96112-VE 019924 -R -R Depth to Groundwater (north) Weld County, Colorado 4N 66W O 20461 -Ft R 02046144/ 739 -R -R• p7F X738 -R 15094-8 848-WCB 538-WCB 12461-R 15858-R�487-WCB 12482 -R -R 08818-F I .I I 10044-R 21:• A013688 -R 0 I Sources: lT Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); uSGS DEM 10m; COSS Well Database 23014 368.%ILP Map Legend DWR Wells - by use type • Domestic/Stock e Irrigation o Dewatering/Other/NA r _I Study Area Model Area *Standing water per Google Earth Image June, 2021 10475-Ro8987-F o 10476•R 67808-F 0225934 0279437 10223-Rin10222-R 06562-F 422-WCB 0 12008-R 12008-R 12010 -R -R o 278183-A ° R o 13426-R 13427-R ° s7 29924-F 0 55863-F 29923-F fl 55664-F T458 -A n 279438 0 03740 3216M 0267998 0267997 X52 -R 17919•A 287999 50 -R -R De 29 336-A $93470-A 138 36,4p,E„,m91101-VFJ 73671 -F -R M3 500 1,000 c• Western Canal Eastern Slough* Western Slough" Q Lined Section 20 Pit Lined Monarch Pit // Li g� 6 -R -R 83753-F 00 610- X Feet 11687 -R -R 6 w Depth to Groundwater" (feet below ground surface) < 5' 5' to 14' 10' to 15' a 15' "Revised from Barkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fig. 10 Date: January 2424 Datum/Projection: NAD83/Colorado State Plane North, Feet A ,^••� , - r.i •" Page 35 of 58 U225934 279437 279438 x 10223 -R 10222-R 3740 ° 321654 °6562-F 13640-F 13671 -F -R O1123 i'Vestern Cana) °12091-F 260982 O267998 O267997 4N 66W 52-R 13043-R 63750-F ° 560-WCB ° Qi 13044 -R -R 267999 20T916 17919-A a 51 -R -R ❑ 13042 -R -R 50 -R -R ° O 297336-A 6 -R -R 11687 -R -R 59952-F 63753-F ° O610-WCB 209-Ro59953-F 63758-Fa1i3959-R-R 63759-F o O208 -R 02��"�31167 6r12"WCB 207•R El 12092-F O952 -R -R 24179 953 -R -R 4 0 59956-F 012681-R O 10988 -R -R 63754-F 20031-U o 20031-V 20031-R ©20031.8 20031-T X631 -R ©630-R 4466-WCB 5-WCB°5819-R-R 54-F 59951-F 75540-F 47534- 14969 -R -R 288867-A ° 0 665-WCB 0 619-R 0623 -R -R ©11324-R 98342-VE 407:WCB o 213562-A 515-WCB 059739-F 01496 13118 -Ea 13119 -F -R 4 4838-F- 109834 12390-R 0632-R 644-WCBu1593t1-A m12791•R-R O 287311. ° 6139-R I 31 5tlU=WGBm13058- 13057-R 130 FIGURE A5b Depth to Groundwater (east) Weld County, Colorado Sources: lT Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); USGS DEM 10m; COSS Well Database Map Legend DWR Wells - by use type 7 Domestic/Stock [21 Irrigation 4 Municipal 03 pewatering/Other/NA r- _ I Study Area Q Model Area *Standing water per Google "Revised from Barkmann and Others, 2014, Colorado Geologic Earth Image June, 2021 Survey Open File 13-06, Fig. 10 14018 49286 q 63756-F 19923-R DL O 213308-A X620 -R -R 85 Western Canal .- Eastern Slough* 0 Lined Section 20 Pit Depth to Groundwater" (feet below ground surface) < 5' 5' to 10' 10' to 15' a 15' Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 36 of 58 4N 6'W 4N 66W r - w z m 1 0 7164-R o 106387 L ?2306 -F -R • 0 208693 1539-R O 225288-A 81801 v 287838 242403 n 1 r 661-R ° 13659-R j o 1336 7165-R 1360-R 544WCB J X58-WCB 433-WCB o 1747-R 0904-WCB 155183-A 8 155183 725-WCB 10986-R ° p. 757'12-F 1997 -R -R o 60980 ql 10987-R 1746 -R -R n �0 63747-F 75614 77041-F 010682 -R -R 92983-A 76273-F 844228 17101 76274-F 013419 -R -R 49496-FD49495-F o 044657 11024-R 44658-A 013418 -R -R a 6371 -R -R 188144 0 94863-A • • • • 13420 -R -R 13421 -R -R 78571-A 0 012674 -R -R • ®5649-F • 013715 -R -R • 027764-A • ©1504 -R -R • N. 0184146- 1-R 38 WCB 18 4-A 59956-F ❑ 12681-R 10988 -R -R 6I 63754 -F 20031-U ❑ 20031-V 20031-R 20031-5 ° ❑20031-T ❑1589•R -R 020079-T 01590 -R -R © 0079S -R °20079-R 49494-F 0210-R R -R © 631-R 4 © 32-R 4838-F 644-WCB 01279'1 -R -R r 0 287311 ° 6132-R 664-R-RQ 93952 305023 12565-R 0250968-A ! J ! 371-WCB 12055-R 12053-R 12054-R ! r)n ❑ /6969-A ! 1 4 5()C(1,000 726-WCB 2,000 Feet F U 11158-F 0 22105 n 1 0119199 !! 01*�-A FIGURE A5t Depth to Groundwater (south) Weld County, Colorado Sources: lT Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); USGS DEM 10m; COSS Well Database Map Legend DWR Wells - by use type • DomesticiStock o Irrigation o Dewatering/Other/NA r _I Study Area [� Model Area 0 Lined Sweet Valley Reservoir Complex Pit 2' Lined Monarch Pit Depth to Groundwater" (feet below ground surface) ® < 5' 5' to 14' 10' to 15' n 15' *Standing water per Google "Revised from Barkmann and Others, 2014, Colorado Geologic Earth Image June, 2021 Survey Open File 13-06, fig. 10 Date: January 2424 Datum/Projection: NAD83/Colorado State Plane North, Feet Page 37of 58 • • • 14050-R 4N 67W 4N 66W 232159 810045-R 0 .' 0 5-R R. 042519fa- 0187425-A 14027- 14026-R �.o _..P 204050 I 014041-R 0270084 0 21288-A 61-WCB ❑ (5300729 0299322 0723-WCB 17583010746-R 10747-R 399-A O 262: A ❑266836-A ❑184198 14043 - 4209-F d No • 044472=F N. . ■ • • C FIGURE A5d 7 9 . ' iia9s- K +4. 17584-A n •o • • • • p11494 -R • • • Q13 ❑ 71644-R 06387 a f a 1 42-8 306 -F -R 0 08693 r 855-W 9-R 0225280-A 81801 287838 B 4 5001,000 19924-Ra 7426-A 1 0 165-R ( ❑13659-R I 13661-R Q a 58-WCB 54=weB�� 433-WCBQ1747-R ©10682 -R -R 92983-A 7s273 -F &W22� 17101 76274-F 2,000 Feet 13419 -R -R n Depth to Groundwater (west) Weld County, Colorado Sources: lT Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); USGS DEM 10m; COSS Well Database Map Legend DWR Wells - by use type ? Domestic/Stock ▪ Irrigation o Dewatering/Other/NA r _1 Study Area [� Model Area Western Canal ' Western Slough* Lined Sweet Valley Reservoir Complex Pit Lined Monarch Pit Depth to Groundwater^ (feet below ground surface) < 5' 5' to 10' 10' to 15' a 15' *Standing water per Google "Revised from Barkmann and Others, 2014, Colorado Geologic Earth Image June, 2021 Survey Open File 13-06, Fig. 10 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, Feet Y Page 38 of 58 FIGURE A6 4N 67W 38 39 40 42 n 41 Aquifer Saturated Thickness Weld County, Colorado Q3.. 41 L,45 43 42 43 43r12043 C41 4fi 4b 49 OD ■ m 4 .4_ 48'� 48 ®�■ 33 .35..s ■ O,,c, 46 ._46 4 49 42c- 41 cox i o 48 0 0563 `'� �s 42 '—'j 531. 55' I47 48 64 n� C fs3 Sources: (1) Civil Resources LLC, October 14, 2022. Memo to Robert Lembke titled "Modification to Model in Response to DRMS Comments..", (2) J&T Consulting Monitoring Well Data; ESRI World Imagery (2021); USGS DEM 10m; CDSS Well Databas Robson, 2000; Section 20 MW Final Report (12.02.2022) Map Legend Q Model Area Eastern Slough* •or Western Slough* Lined Sweet Valley Reservoir Complex Pit Q Lined Section 20 Pit L. Lined Monarch Pit 4N 66W • GILCREST ° DWR Well^ Meining Monitoring Well A —Observed November 2023 (ref. 2) Section 20 Pit Monitoring ❑ Well - Observed December 2021 (ref. 1) — Western Canal Aquifer Saturated Thickness (ft) 20' to 30' 30' to 40' 40' to 50' 50' to 60' 60' to 86' Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet a _ �r1 1.1 1 •lr•s Page 39 of 58 FIGURE A7 4N 67W I 4N 66W fatte'Rlvet :4400 $00 1400' 1300 1200 15�y+ 15 Well Yield Weld County, Colorado �' aso • 300' i 15 ,( 1000 I loop13' 113 d' 900o500: - Do 900 Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database loon Erg 2150 1225 :15 0 ° i 15 1800 800 2000 2000 1100_ N4 - 1200 Map Legend Model Area Eastern Slough* `., Western Slough* — Western Canal Lined Sweet Valley Reservoir Complex Pit Lined Section 20 Pit I Lined Monarch Pit •1000 65.0 7 II gpm 1000 ` - "e .9f7. .w i+1200 •rI 900 800 ■. • I wester'n`Canal • -=a 1600 4 86'0 90 DWR with Yield Data^ O Domestic/Stock (<15 gpm) ❑ Irrigation (<15 gpm) O Domestic/Stock (15-250 gpm) ❑ Irrigation (15-250 gpm) © Irrigation (250-1,000 gpm) 0 Other/NA (250-1,000 gpm) Irrigation (>1,000 gpm) • Other/NA (>1,000 gpm) Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet .- .... 'fir '�.�.. �• Page 40 of 58 FIGURE A8 Transmissivity Weld County, Colorado Sources: JTConsulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database; SPDSS Map Legend El Model Area Eastern Slough* •or Western Slough* — Western Canal Lined Sweet Valley Reservoir Complex Pit El Lined Section 20 Pit I'• � Lined Monarch Pit r\ Transmissivity Contour from SPDSS [tgrid0309] (1,000's gpd/ft) Modeled Transmissivity (1,000's gpd/ft) ,t„ *Standing water per Google Earth Image June, 2021. Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 41 of 58 FIGURE A9 4N 67W I 4N 66W Hydraulic Conductivity Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database; SPDSS Map Legend Q Model Area Eastern Slough* •or Western Slough* — Western Canal Lined Sweet Valley Reservoir Complex Pit I Lined Section 20 Pit Lined Monarch Pit *Standing water per Google Earth Image June, 2021. Western Canal Hydraulic Conductivity (ft/day) 7s 200 400 800 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet FIGURE A10 Pre -Pit Water Table and Calibration Residuals Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database; (2) Barkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fi 10 4. G. 0.39 '5187 Map Legend r Study Area Q Model Area Observed vs Modeled Residuals Observed Higher than Model Observed Lower than Model • • Modeled Water Table Elevation Contour Page 42 of 58 -- Western Canal Water Table Contour - a- Eastern Slough* interval = 10' (ref. 2) (\,. Western Slough* CGS (2012) Figure 10 Lined Sweet Valley Reservoir r\/ Spring 2012 WT Modified contour Complex Pit Q Lined Section 20 Pit [7. Lined Monarch Pit Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet • based on SVRC data Dashed where • inferred (ref. 2) *Standing water per Google Earth ImaS June, 2021 4r ��.... 'r. 1 . - • .. F w�u Page 43 of 58 4N 67W FIGURE A11 7164-R Q �. 06387 14042-R --.-.-- 1453.1 R Scenario 1- Change Caused by SVRC Pits Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 4N 66W �y - 035-R 904-WCB 155183 0880 •- WC8p1747A Map Legend '.: Western Slough* I_ 1 Study Area Eastern Slough* 0 Model Area DWR Wells - by use type Lined Sweet Valley • Domestic/Stock Reservoir Complex Pit • Irrigation Monitoring/Sampling 0 Municipal ▪ Dewatering/Other/NA *Standing water per Google Earth Image June, 2021 ^Contour interval = 0.5 ft Change in Water Level Contour^ Drawdown iNj Mounding -- Western Canal Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet w�u Page 44 of 58 4N 67W 4N t 300729 ' 299322 F; FIGURE Al2 187425�ASI 1402 O 8 R � 11414-R 7164-R 7165-R 13659-R. 06387 C7 , *. X13661 -R Va i •54-WCB El 14042-R. -- •m. 14539-R 225280-A Scenario 1 - SVRC Mitigation to CCWCD Pipeline Weld County, Colorado ❑ Q • 0:5, 58=WCB Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 1997 -R -R "1746;R -R R 1747-R 433-WCB 66W 7643-F •738-R . 5094-R 848-WCB Rkj L . p -X225934 216684-A p13688 -R 10044=R • c. 14028=8 13689 -R -R 904-WC8' ©•., F 155183-A } .e 155183 725-WCB •10986.8 260980 �637-47 ,-75614, =77041-F Map Legend Western Slough* Eastern Slough* DWR Wells - by use type A Domestic/Stock D Irrigation O Dewatering/Other/NA 75712-F 109878 63754E '6794-F 29924=F' 55663- 2992 F.® F 287458-A =- :267998 ik. 297336-A: ,0 293470/1 Ca 9110 ,VE{c 476 -R -R 11687 -R -R 36777 E?R• �e`' 63753-F . &. 251239-A 0031 U ■.20031-V 20031-R 610-WCB 209-R 59953=F E; X13959-R-R�f63758-F 63759-207=8 3208-1 23116%t 642-WCB 2092-F O952 -R -R 953 -R -R :'J I ' +•: . 631-R 159311-A{ 1�12791=R'R 287311 p 6132-R 3607-F/J 664 -R -R 665 -R -R Lined Sweet Valley Change in Water Level Reservoir Complex Pit Contour" r\,./ Drawdown i\J Mounding *Standing water per Google Earth Image June, 2021 ^Contour interval = 0.5 ft -- Western Canal O Modeled Dewatering Well Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet 4 'rI • �s emu.. Page 45 of 58 Z a 0 p 270080 •69-WCB ��300729 4N 67W 4N 66W 14041_RE 299322 a FIGURE A13 13703•R 14524-R 199241R•R 185.1013,-A ,19824V -R 11114-R 11113 -RD 187426-Ah 7164-K 06387 014042-K-, --� R' 22306-F_ K r. S 8693.} I !' t, A 14539-K 225280-A CAS ' I 7165-R IR 54-WCBf 5 Scenario 1- SVRC Mitigation to Drain Weld County, Colorado 5841CB.r`r Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 013559-R 13661•R 7643•F' 739R•• 5094-R 848-WCB r 225.934, 53 ANC er 12461-K 182.23-R 15656-K 487-WCB _12462 -K -K s 8818-F 10222-R 13640--F' Rr_. . 41123- ,5 125566-4 :12091; F. •:260982 904-WCB f f'' 155188-A 155183 I 725-WCB, 10986-K Li ,r75712 -F. 1997-R-R }'174fr`R•R � 1747-R Li 433-WCB 1 *?19.56- 10988 -K -K 63754-F 20031 20031-K 20031-S All A 260980, _ 10987-K I 20031-T T x_756 4 _ ©1[589-K-nra CF637„47-x. 77041-F • s'67' 29924-F x'55663 -F 29923-F 55664-F 287458-A' 4279438 740- • ji5244 287999 324 41,055114:' RrRy �51'-R=R yq , - - °.17999, 29733&A. 91101:VEr 13671 rR 251239-A 20031-V Map Legend `., Western Slough* 2,- Eastern Slough* DWR Wells - by use type O Domestic/Stock 0 Irrigation O Dewatering/Other/NA 20079-T `_'' 1590-R!R 267997 �a 293470-A C • L41,, 476 -K -K 11687 -K -K 53753-F O610-WCB+ 209-K ,b9953 -F 4413959 -K -K 63758-F 63759-202 W n 642- 3116r�i 208-K 12092--F 952 -R -R 0 yf 63U`K 953ds•Rfte ' 6.4a,WC6 127914V 287311.E . O"1x61 3607 -Fe. @011- R -R 655 -R -R /' Study Area 0 Model Area Lined Sweet Valley Reservoir Complex Pit *Standing water per Google Earth Image June, 2021 ^Contour interval = 0.5 ft Change in Water Level Contour^ r\./ Drawdown r\./ Mounding -- Western Canal O Modeled Dewatering Well Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet 'r I •s •u.. SVRC Groundwater Evaluation January 2024 Page 46 of 58 APPENDIX B -MODELING IMPACTS CAUSED BY OTHER PITS BACKGROUND In Appendix B, we evaluated four additional pit development scenarios including: • Pit Scenario 2 — Only Section 20 Pits (Run 2); • Pit Scenario 3 — Only Monarch Pits (Run 3); • Pit Scenario 4 - Both Section 20 and Monarch Pits (Run 4); and • Pit Scenario 5 - All Pits (Section 20, Monarch and SVRC) — Run 5. In each scenarios, we simulated pits by assigning pit cells as impermeable "no -flow" cells and then calculated the "change" compared to water levels from the Pre -pit Run. MITIGATION RUNS In the Mitigation Runs, we attempt to minimize the upgradient change by simulating dewatering wells and or infiltration drains upgradient of pits to reduce drawdown. For Scenario 1 (Only SVRC Pit), discussed in Appendix A, we used two dewatering wells. For the Section 20 Pit, the applicant plans to install both drains and wells to mitigate upgradient mounding, and simulate downgradient recharge through a pond located outside the center of the downgradient liner (Civil Resources, 2021 Sheet 6). To date, we are uncertain what Monarch's mitigation plan will entail, so we also simulate exfiltration drains in this analysis. Whether one or the other is used will depend on its cost effectiveness and regulatory approval. We believe that installing downgradient exfiltration drains will be more cost effective and require less maintenance and augmentation challenges than using recharge ponds, which is why we used them in this analysis. For Scenarios 2-5, we evaluated horizontal infiltration drains to alleviate mounding. Water level flow into a drain is controlled by the conductance term (COND) which is a function of the drain area, permeability of the gravel fill around the drain and depth below the water surface. We assume a 1 foot cross-sectional drain surrounded by gravel with a hydraulic conductivity (K) of 400 ft/day. For a 100 foot long model cell, COND = 40,000 ft^2day (400 ft/day x 1 ft x 100 ft). COND is calculated internally by the model using the digitized length of drain across each model cell. We determined the depth of each upgradient drains using trial and error to achieve zero drawdown, and then iteratively "hard wired" that amount as recharge using the Modflow "Recharge" package. Using this approach to simulate exfiltration drains, we were able to spread the water out over a longer stretch than could be achieved through a real drain. We report the predicted drain flows under each scenario which will vary in reality depending on the drain design and site -specific aquifer properties. The modeling results should be refined through additional modeling and cost analyses prior to construction. Pit Scenario 2 — Only Section 20 Pits Figure A14 shows the impact of liners installed in Section 20 Pits under Scenario 2. The model predicts mounding in the range of +1 to + 6.2 feet in approximately 25 wells. Shadowing is McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 47 of 58 expected in the range of +1 to + 6.4 feet in approximately 87 wells. We did not tabulate the well owners affected since it is not the purpose of this evaluation. To mitigate upgradient mounding Figure A15 shows a dashed yellow line that represents the upgradient drain and a solid yellow line representing the exfiltration drain along the northern pit boundary. The simulated drain flow is approximately 1467 gpm which reduces water level changes to nearly zero. Pit Scenario 3 — Only Monarch Pits Under Scenario 3 only Monarch Pits are simulated. The change in water levels associated with just the liner (Run 3) show mounding is expected in the range of +1 to + 4.2 feet in approximately 4 wells (See Figure A16). Shadowing is expected in the range of -1 to -3.7 feet in approximately 76 wells. Most impacts can be reduced to below +/- 1 foot if an upgradient drain is installed in front of Cell 1 (elevation 4742 ft) and Cell 3 (elevation 4733 ft), and an exfiltration gallery is installed downgradient to reinfiltrate the groundwater (Figure A17). The simulated combined drain flow is approximately 1016 gpm. Pit Scenario 4 — Section 20 and Monarch Pits Under Scenario 4 both Section 20 Monarch Pits are simulated. Mounding is expected in the range of +1 to + 5.9 feet in approximately 27 wells (See Figure A18). Shadowing is expected in the range of -1 to -6.4 feet in approximately 132 wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient drains are installed at both pits (Figure A19). Model results show the infiltration and exfiltration drains will flow approximately 2373 gpm. Pit Scenario 5 — All Pits (Section 20, Monarch and SVRC) Under Scenario 5 only Monarch Pits are simulated together. The change in water levels associated with just the liners (Run 5), shows mounding in the range of +1 to + 5.9 feet in approximately 27 upgradient wells (Figure A20). Shadowing is expected in the range of -1 to -8.7 feet in approximately 133 downgradient wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient infiltration and exfiltration drains are installed at both the Section 20 and Monarch pits. At the SVRC, we simulated two upgradient wells, each pumping 225 gpm (450 gpm total). Using an exfiltration drain (Figure A21), the total drain inflow is approximately 2367 gpm and exfiltration drain outflow is 2817 which includes the amount pumped. In the preferred mitigation run for SVRC, where pumped water is exported off -site into the CCWCD pipeline (Figures A22), the infiltration and exfiltration drain flows are the same (2367 gpm). Both mitigation runs are equally effective at reducing shadowing downgradient which is why the applicant prefers to direct drain flow into the CCWCD drain. Table B 1 summarizes all pit impacts in terms of the number of wells with mounding and shadowing over 1 foot, and mitigation run well and drain discharge estimates to alleviate changes in the water table. cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 48 of 58 Table B1 - Pit Run Summar Pit Scenario Run Description Without Mitigation With Upgradient Mitigation Downgradient Mitigation Fig. Number or Wells with Water Level Change Well Infiltration Exfiltration Fig. Pumping Gallery (gpm) (gpm) Drain (gpm) Number or Wells with Water Level Change Mounding Shadowing >1ft >1ft Mounding Shadowing >1ft >1ft 1 Only SVRC A11 2 4 Al2 400 na na 0 8 A13 400 na 400 0 0 2 Only Section 20 Pit A14 25 87 A15 na 1467 1467 0 0 3 Only Monarch Pit A16 4 76 A17 na 1016 1016 0 2 4 Section 20 and Monarch Pits A18 27 132 A19 na 2373 2373 0 0 5 Section 20, Monarch and SVRC (All Pits) A20 27 133 A21 450 2367 2817 0 0 A22 450 2367 2367 0 0 cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 49 of 58 APPENDIX B FIGURES B1 - B8 cGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com Page 50 of 58 4N 67W I 4N 66W FIGURE B1 Scenario 3 - Change Caused by Section 20 Pits Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m _ Map Legend `.: Western Slough* r_ , Study Area Eastern Slough* IM Model Area DWR Wells - by use type Q Lined Section 20 Pit 4 Domestic/Stock • Irrigation * Monitoring/Sampling 4 Municipal o Dewatering/Other/NA *Standing water per Google Earth Image June, 2021 ^Contour Interval = 0.5 ft Mile Change in Water Level Contour^ Drawdown Mounding Western Canal Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet ▪ 4-ps �' . Page 51 of 58 Z 4N 67W Fr~204050 : '`• ❑41( g 270080 s1-wcB W30y 0729 299322 H 279370 232159 4854* 19924 -1I -R •1874254,1 -• • O14026 -R l 11114-R 11113-R GI 1874 07164-R 6387 14042-R•i -•••- Few Scenario 3 - Section 20 Mitigation to Drain Weld County, Colorado 19924-U 7165-R 13659•R i ❑.a i X13661 -R 54-WCB 44ii � IIA�. 58-WCB Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 117 1747-R 433-WCB 7643-F 15094-R 268885 0-R - 68686 591-WCB 19924-W 14028=R 4N 66W 848-WCB 13690-R eRr 25566-A 1 i 60982 0133A , 13660-R ,x60981 FIGURE B2 p904-WCB: X155183=A. 155183 725-WCBj-1-0906:R: r*Or 41E.637, 71041-F } Map Legend '-'„ Western Slough* 70— Eastern Slough* DWR Wells - by use type O Domestic/Stock O Irrigation © Dewatering/other/NA 757. - 0987ir. 75614.- - • 10988-R•R 63754-F 20031-V 20031;RR� p31.5 -T Q15gg�-R) 20079-T' • '15800 -R' -R 0 e. '13 i . �4 !. 267997! L0 293479 -At," �y.476-R-R 11687•R -R ) - 63753-F ° 0s1n-wcs 209-1)559953,F 1239•A r Study Area Q Model Area O Lined Section 20 Pit *Standing water per Google Earth Image June, 2021 "Contour interval = 0.5 ft 67 55663-F 55664=F 1 "52_R 267999 R . 50 -R=R' 51'-R'R 1T,91� x97336 -A_ NM13959-R-R 63758-F 53759 -MA 0642- 231167 200-R i 12092-F ©952 -R -R t 953 -R -R 631-R F.+ 644:WCB, I r '127914VR� ae7earr�: = .w► q Ofi132 R 3607-F� .SW -RJR -685 -R -R +� Change in Water Level Contour" Drawdown r\.J Mounding Western Canal Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet 1 � -rC LY c L� • c L� - e Page 52 of 58 FIGURE B3 4N 67W 4N 66W Scenario 3 Change Caused By Monarch Pits Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m Map Legend Western Slough* r_ , Study Area Eastern Slough* IM Model Area DWR Wells - by use type I = r Lined Monarch Pit 4 Domestic/Stock Irrigation * Monitoring/Sampling 4 Municipal o Dewatering/Other/NA *Standing water per Google Earth Image June, 2021 ^Contour Interval = 0.5 ft Change in Water Level Contour^ Drawdown Mounding Western Canal Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet �' . Page 53 of 58 Z 4N 67W 4N 66W O1=R g 270080 s1-wcB w3000729 299322 N 275938 19924-WR 19924-11 187425;*t. 11C 1402fiA,-,1 =1� - 11114-R 11113-R •187428-A i, --4 y 7164-R : 71654R 13659•R 2D638 �',0� .1 13661-R E�77 54-WCB Scenario 3 - Monarch Mitigation to Drains Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USG~ DEM 10m 7843-F = •738-R 150 8818-F 848-WCB 044-R► - 13689•R -R 9924-W, 14028=R"1 260981 199 T -R FIGURE B4 , '904 -WO; rl'155183:A . 155183 725-WCB;.f0986=R: Map Legend '-'„ Western Slough* 70— Eastern Slough* DWR Wells - by use type O Domestic/Stock ® Irrigation © Dewatering/Qther/NA 225934 10223 R t�a5 125566-i 12091:F Cc ,M260982 200311R 75712-F:. - 098i�=R'. 7.6641r-- - • r59956 -F x: 10988-R•R 63754-F 13671 -F --R 299241F. 29923-F 287458-A 67• 55663- 556641F 293470-A v 418 -R -R 11687 -R -R 63753-F Os10-WCB '.. 209-R P*13959-R-R 59953,E 63758-F i 03700407.1R 642- 251239-A 223118yrVA' 200-R 12092-F 952 -R -R © X6301R 953 -R -R 20031-V l4. 20031-T Q158�-R) _ �:. 20079-T' • :'1590 -R' -R O e - r Study Area Q Mod& Area Lined Monarch Pit *Standing water per Google Earth Image June, 2021 ^Contour interval = 0,5 ft '12791=RM 2.87311r 4838-F; r 6132-R 3607-F� SW -RA 685 -R -RR Change in Water Level Contour" r\J Drawdown r Mounding Western Canal Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 54 of 58 FIGURE B5 4N 67W 4N 66W Scenario 4 - Change Caused by Section 20 and Monarch Pits Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m Map Legend Western Slough* r_ , Study Area 20— Eastern Slough* IM Model Area DWR Wells - by use type Lined Section 20 Pit 4 Domestic/Stock Lined Monarch Pit Irrigation 'A- Monitoring/Sampling 4 Municipal o Dewatering/Other/NA *Standing water per Google Earth Image June, 2021 ',Contour interval = 0.5 ft Change in Water Level Contour^ Drawdown Mounding Western Canal Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet , Page 55 of 58 4N 67W 4N 66W 85:R Rs 42519=F •620 •4050 14049-R gh, O 1404114/ x70080 9s1-wc8 �3 0729 299322 N -,-,0:-.a.1.-- v0% __ rA gr, 7164-R II 71654? 13859.8 -20638 ••!.. 0 ;,FO. i X13661 -R 1:,),40,46.i-_-_-- 54-WCB .,1i.D' �� 58-WC8 f. 19924•R -R 187425% 14020i giros_ 11114-R11113-R f. 19924-U • 187420-A 7943-F - 738.R 68086 591-WCB w - i225934 5351WCB 12461-R 10223 R 15656-R 487-WCB 12462•R -R 1 a li=M!n 16684- 10044-R 13688-R Ar5 14028=R a '260981 s 199 T -R ■ 145 Scenario 4 - Section 20 and Monarch Pits Mitigation to Drains Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m g FIGURE B6 f 155183 P•' ''725-WCB .10986=R: .,1 • A17 1747-R 433 WCB ;904-WCB; 155183`A. P10r 674- ,..77041-F Map Legend '-'„ Western Slough* Jr Eastern Slough* DWR Wells - by use type © Domestic/Stock • Irrigation O Dewatering/Cither/NA 75712-F: - 098iir• 75614.- - r59956 -F 0988 -RA 63754-F 200311R 20031-V 20031+$ 2fl�031-T Q158M-R) _ �:. 20079-T' ''1590 -R' -R D e "G{ i r Study Area Q Mod& Area O Lined Section 20 Pit ) Li .ned Monarch Pit *Standing water per Google Earth Image June, 2021 ^Contour interval = 0,5 ft 29924F. 29923-F 287458-A 293470-A 2677 55663- 55664-F .267999 51'--R=.R 17,916 297336-A_ 76 -R -R 11687 -R -R 63753-F 610-WCB 7:0" 209;11599531F at13959-R-R 63758-F 63759401.40642- 6.231167.r..". 200-R 12092-F 952 -R -R _#d630=R 953 -R -R r � . -1 . 631-R r 'T12791OR 2.873110: q 06132-R 3607-F/ SW -RA 685 -R -RR '; 4838-F,+ 644.WCB, Change in Water Level Contour" (NJ Drawdown r\.J Mounding Western Canal Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 56 of 58 FIGURE B7 Scenario 5 - Change Caused by All Pits Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m Map Legend Western Slough* Eastern Slough* DWR Wells - by use type 4 Domestic/Stock Irrigation 'A- Monitoring/Sampling 4 Municipal o Dewatering/Other/NA r_ , Study Area 0 Model Area Lined Sweet Valley Reservoir Complex Pit Lined Section 2a Pit i-,! Lined Monarch Pit Change in Water Level Contour^ Drawdown Mounding Western Canal *Standing water per Google Earth Image June, 2021 ',Contour Interval = 0.5 ft Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 57 of 58 Z 4N 67W � -4 85:R R� 42519=F 01404 270080 g61-WCB 300729 299322 N 187425=Ayer')• - 1402s`R'' ( km A� :A.5 _ . v .._y. f 11114-R 'osti 11113-R O � . �14i-18742 ',oak 279938 19924-R.R 18540&A 19924Y -R °J541hr ,a5 ii 5ydi 7164-R 7165-R i i o a i.- Y6387 ^ - I f0.5, • , Y 14042 -FYI -;--........t .54 1.1q 6'D i r 306&F -R Scenario 5 - All Pits with Mitigation to Drains Weld County, Colorado 58-WCB d4 Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 19924-U 4N 66W 7643 -F -738A 15094-R ei 68095 68086 CB ti I' i y225934, 5381WCB 12461A 10223-R 656•R�487-WCB X216684 -A 23014 19924-W FIGURE B8 14028=R 260981 o13659•R 0133A , 13661-R 13660-R X17 1747-R 433-Wc8 725-WC6,.10986=R: 2003VR 247.14 r0.9ib - 2` 0, , j 63t. 75614. - - -904-WCB; it' X155183`4. 155183 ■ f'I K 13690-R 125566-A X260982 •267998 279437 127943_$: 3740 267997 94 R � 52,R 8222-R ti ' � r �, f3 � '321654a 267999' 51 tR. w 59956 10988-R•R 63754-F 20031-V �20viNft.031-T 158M -R) 0 = 06-'77041-F �. 20079-T' 'ti 1590 R'R D e _ Map Legend '"'„ Western Slough* Jt- Eastern Slough* aWR Wells - by use type © Domestic/Stock O Irrigation © Dewatering/other/NA r Study Area Q Modef Area Lined Sweet Valley Reservoir Complex Pit [] Lined Section 20 Pit .4 Lined Monarch Pit *Standing water per Google Earth Image June, 2021 "Contour interval = 0.5 ft 293470-A L` ymi 476 -R -R 11687 -R -R • e 63753-F � 961a WCB f+ I 209.8 59953,F Is!�13959-R-R - 3758-F 6375940DR 0642- •23116! 20&R 12092-'F O952 -R -R 953 -R -R r � . 631-R ' ..4630=8 i al I T12791=R=R 9077 14C1, �• .a.► w,y"{:31O 41 • 644.WCB, 3607-F, SW -R=R 665 -R -R Change in Water Level Contour" (-4_J Drawdown r\.J Mounding — Western Canal a Modeled Dewatering Well Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 58 of 58 4N 67W R � -4 85 R% 42519=F FIGURE B9 -26638 187425'A O i, 40261-R 19924tH -R AT's A.5 ice' _�1- :k_� n1r r 11114-R -015.- 11113-R 0:5,18742 a4 Q O7164 -R �` f] 4146- R +! _ _ 1 R'i i anoint— 5446310 r 58-WCB CIF .T• Scenario 5 - All Pits with Mitigation to Drains with SRVC to CWCB Pipeline Weld County, Colorado Sources: lT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 19924-u 7643-F 15094-R R - 68086 4N 66W 848-WCB ►v i'- i 225934, 5381WCB e12461 -R 10223 R 5656-R 487-WCB 12462-R•R 8818-F i.� 9924-W 14028=R - -260981 1'9 -R ■ 13650-R 1331ii 13661-R 13660-R i? r L� X17 1747-R 433-WCB 125566-A ,:260982 -904-WCB; �I 1551834. 155183 725-WC100986=R: !2, of r rop6374 77041-F _ Map Legend Western Slough* Jr Eastern Slough* aWR Wells - by use type © Domestic/Stock Irrigation o Dewatering/other/NA r 75712-F: 4 0987 R'. 75514 : -' 599561 10988•R•R 63754-F 26031-R 29924F. 29923-F 287458-A .67• ,4 55663 F 55664-F 247998' {279438; • { 3740 9 •' � ti . 2fi7997 +, Q ..�.c 267999 .*51'-R R g' 17,91s- 297336-AY"I .ca 293470-A tC 99101-11F �i�Ts�:476 R -R 11687•R -Ft h 3l� 63753-F Q 200314 ,'cocas 20031-T :1158M-14 _ 20079-T' 1590=R=R: O e i r Study Area Q Model Area Lined Sweet Valley Reservoir Complex Pit Lined Section 20 Pit Lined Monarch Pit r � *Standing water per Google Earth Image June, 2021 ^Contour interval = 0,5 ft ':12791=R=R 287311O. 4838-F,+ 06132-R 3607-F/ SW -RA 685 -R -RR Change in Water Level Contour" (-4.) Drawdown r\J Mounding — Western Canal Q Modeled ❑ewatering Well Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet EXHIBIT H Wildlife Information The project area was surveyed for general wildlife habitat by Ecological Resource Consultants (ERC). The Screening Report for Federal and State Listed Threatened and Endangered Species from ERC is attached which describes the wildlife habitat present on the site and the common species that may be found in the habitat area. ERC has conducted this screening for federal and state listed threatened and endangered species and general wildlife for the approximately 152 -acre survey area. The following provides key items identified as part of this report: 1. Two primary land use class/vegetation cover types exist within the survey area. Habitat within the survey area is characterized as Cultivated Cropland (95`)/0) and Disturbed (5`)/0). Historic land use for agricultural practices has led to degradation of the native vegetation community. 2. Generally, there are features on the survey area and the surrounding area that provide general habitat for local songbirds, raptors, and small to mid -size mammals. However, habitat within the survey area is somewhat degraded and of lower ecological value from a wildlife perspective due to historic and current land use for agriculture, which has restricted overall growth and establishment of vegetation. Per the CPW SAM data, High Priority Habitat was mapped for bald eagle winter range, little brown myotis overall range and mule deer overall range. The survey area has been subject to frequent agricultural practices, is fragmented on all sides and does not contain the necessary habitat to support the listed species. Therefore, impacts to HPH associated with the listed species is not anticipated. 3. Non -raptor birds No non -raptor migratory bird nests were observed within the survey area. However, prior to vegetation removal a nest survey should be completed to ensure that no nests have become established within the survey area and active nests, if any, are not disturbed. Non -eagle Raptors No non -eagle raptor nests were observed and no CPW mapped non -eagle raptor nest protection zones are located within the survey area (CPW 2023a). However, nest activity status can vary seasonally and from year-to-year. Future land use changes may require additional nest surveys (generally between February 1 and September 15 (CPW 2020)) to determine activity status within % to % mile of the survey area to ensure compliance with CPW recommendations. Eagles No eagle nests or eagles were observed and no CPW mapped eagle nests are located within the survey area (2023a). However, nest activity status can vary seasonally and from year-to-year. If a nest does become established within a %-mile of the survey area or within the survey area, CPW recommends a "No Surface Occupancy" and "No Human Encroachment" within %-mile radius of active nest sites from December 1 through July 31. Future land use changes may require an additional nest survey (generally between Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application December 1 and July 31 (CPW 2020) to determine activity status within'/2-mile of the survey area to ensure compliance with CPW recommendations. 4. No federally listed threatened and endangered species and/or habitat protected under the ESA were identified within the survey area. The survey area is not within designated critical habitat of any federally listed species (USFWS 2008). The vegetation community and features within the survey area were investigated as potential habitat for federally listed species. Any future land use changes will result in No Take on any federal listed species, their habitats, or proposed or designated critical habitat. 5. No State listed threatened or endangered species and/or habitat protected by CPW under Colorado Statute Title 33 were identified within the survey area. The vegetation communities within the survey area were investigated as potential habitat for state listed species. Any future land use changes will have no effect on any state listed species, their habitats, or proposed or designated critical habitat. Attached is ERC's Screening Report for Federal and State Listed Threatened and Endangered Species. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application fficed ®jai C,820 Mamma i d S Crkg29 LIM 225 Union Blvd., Suite 325- Lakewood, CO 80228- (303) 679-482❑ SCREENING REPORT FOR FEDERAL -STATE LISTED THREATENED AND ENDANGERED SPECIES AND GENERAL WILDLIFE FOR MEINING PROPERTY WELD COUNTY, COLORADO November 22, 2023 Prepared For: J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office Phone: 303-857-6222 Email: jcyork@j-tconsulting.com J.C. York, P.E. ERC Project #420-2310 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Screening Report for Federal -State Listed Threatened and Endangered Species and General Wildlife Meining Property Weld County, Colorado November 22, 2023 Contents 1.0 INTRODUCTION 3 2.0 GENERAL SURVEY AREA DESCRIPTION 3 3.0 SCREENING METHODOLOGY 7 4.0 GENERAL WILDLIFE HABITAT (NON -REGULATED) 7 HIGH PRIORITY HABITAT AREAS 8 5.0 MIGRATORY BIRD TREATY ACT 9 6.0 SPECIES PROTECTED UNDER THE ENDANGERED SPECIES ACT OF 1973 10 MONARCH BUTTERFLY (DANAUS PLEXIPPUS) 12 7.0 STATE THREATENED AND ENDANGERED SPECIES 13 BLACK -FOOTED FERRET (MUSTELA NIGRIPES) 14 BURROWING OWL (ATEHENE CUNICULARIA) 15 8.0 SUMMARY 15 9.0 REFERENCES 17 Figures FIGURE 1 -SITE LOCATION AND VICINITY MAP FIGURE 2 -VEGETATION COMMUNITY MAP 2 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Ecological Resource Consultants, LLC (ERC) has prepared this report at the request of the property representative, J&T Consulting, Inc. The 152.3 -acre property referred to herein as the Meining Property (survey area) is located west of Gilcrest, Weld County, Colorado. The survey area is under consideration for potential future gravel mining operations which will likely alter a majority of the current survey area landscape; therefore, this report has been prepared to specifically identify potential federal and state listed threatened and endangered species and/or habitat that could exist on or immediately surrounding the survey area. In addition, this report provides a cursory screening of general wildlife use characteristics and existing vegetation community types. This report has been prepared in accordance with the Migratory Bird Treaty Act (MBTA), Endangered Species Act (ESA), Colorado Parks and Wildlife (CPW) Colorado Statute Title 33, the Bald and Golden Eagle Protection Act (BGEPA) and Rule 6.4.8 of the Construction Materials Rules of the Colorado Mined Land Reclamation Board Exhibit H — Wildlife Information. The survey area is located approximately 2.31 miles west of the intersection of CO Highway 85 and County Road 42 and west of Gilcrest in the Wildcat Mound -South Platte River watershed (HUC 101900030604). More specifically, the survey area is located in Section 30, Township 4 North, Range 66 West, in Weld County. The approximate center point of survey area is latitude 40.286121° north, longitude -104.815663° west. From the intersection of CO Highway 85 and Weld County Road 42 in Gilcrest, the survey area can be accessed by heading west on Weld County Road 42 for approximately 2.31 miles until reaching the intersection of Weld County Road 42 and CO Highway 60. The survey area is comprised of agricultural fields with the Western Mutual Ditch transecting the survey area from west to east. Two irrigation ponds are also present in the northeast portion of the survey area. Refer to Figure 1 for a location map and a US Geological Survey (USGS) topographic map of the survey area. The survey area is situated within the Great Plains ecoregion (Bailey 1976) at an approximate elevation of 4,760 feet above mean sea level (AMSL). The vicinity of the survey area is comprised of agricultural lands in all directions with private, single-family homes throughout. The landscape within the survey area is predominantly characterized as Cultivated Cropland (NatureServe 2023). Cultivated Cropland The cultivated cropland community is characterized as a non -natural system which includes lands used for the production of annual crops where crop vegetation accounts for greater than 20 percent of the total vegetation and where the land is actively tilled (SWReGAP 2011). This community also includes all land being actively tilled. The cultivated cropland community within the survey comprises relatively flat agricultural fields currently planted with corn (Zea mays), and row crops including winter wheat (Triticum aestivum). The agricultural fields appear to be regularly plowed and/or tilled and subject to flood irrigation practices throughout the growing season. 3 A ERC Disturbed Meining Property Threatened & Endangered Species and General Wildlife Screening Report The Disturbed community includes the Western Mutual Ditch, an irrigation ditch which appears to be used solely for irrigational purposes. Two irrigation ponds which are fed from the Western Mutual Ditch and also appear to be used solely for irrigational purposes. An oil and gas tank in the west central portion of the survey area, and a private single-family home with agricultural outbuildings and corrals in the southeast corner of the survey area. These features consist of barren grounds associated with oil and gas related activities, closely cropped vegetation such as well lawns and landscaping, and urban materials such as buildings and pavement. Tree canopy varies from 0 to 50% (e.g., open to shaded lawns and gardens) (NatureServe 2023). Refer to Photos 1-8 below for typical characteristics within the survey area. _.Z.•• Photo 1. View south from the western portion of the survey area. The survey area is dominated by agricultural fields and subjected to frequent plowing/tilling. Photo 2. Overview east from the center portion of the survey area. The survey area lacks overstory trees and shrubs as it is frequently subjected to agricultural practices. lignik. Mk - Photo 3. View north from the center portion of the survey area. The Western Mutual Ditch can be seen in the foreground. Photo 4. View west from the eastern portion of the survey area. The Western Mutual Ditch can be seen in the right-hand side of the photo. The survey area is dominated by agricultural cropland. 4 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report 24 o r, O Atu rue c l _ 25 Well. 47th • Forl Collins --47,0- Well 476 19 a w 1 4743 4753 Legend * Approximate Location Survey Area Boundary (152 ac Well 17 wis° DITCH 54 30 4767 T4, . Gleelery Lor�icnt Bonlrier emer 4765 3 r t I P� Wells 4,773 4734 r w 29 f 'a: am/ y Yen • 4753 P I Fem 4768 Prepared By: A ERR 2820 Wrldemess Pl. Ste A Boulder. CO 80309 (303) 679.4820 ERG 4: 420.2310 FIGURE 1 LOCATION & TOPOGRAPHIC MAP MEINING PROPERTY WELD COUNTY, COLORADO 0 1,000 2,000 4,000 Fee[ 5 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Prepared By: ® E C 2820 Wlderness PI. 5[e R Boulder, CO 8O0'1 [303] 879.4820 ERC #: 420-2310 FIGURE 2 VEGETATION COMMUNITY MAP MEINING PROPERTY WELD COUNTY, COLORADO 0 209 400 800 Feel 6 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report ERC conducted a literature review as part of initial data collection for preparation of this report. ERC reviewed available literature sources including: CPW information and the US Fish and Wildlife Service (USFWS) Federal Register. A field inspection was subsequently conducted on November 6, 2023, to identify and document the presence of natural vegetation communities, general wildlife use and potential for threatened and endangered species/habitat. Upon review of all available resources, including literature and field inspections, ERC provides the following determination for the survey area. Wildlife utilizes the general landscape in a multitude of ways and uses a variety of habitats as areas of permanent inhabitance, seasonal inhabitance, breeding grounds, migratory routes, for foraging purposes, or as temporary shelter. Potential wildlife habitat includes the entire survey area. Historic and current land use associated with agricultural practices have restricted and/or degraded the development of any significant natural vegetation communities within a majority the survey area, which limits the overall quality of potential wildlife habitat. As discussed in Section 2.0, two habitat types were observed within the survey area and are characterized as Cultivated Cropland and Disturbed. The Cultivated Cropland (95%) and Disturbed (5%) vegetative communities are dominated by non-native or weedy species and are not typically considered of high ecological value to wildlife; however, agricultural lands can have beneficial values to certain wildlife species. These areas at a minimum are considered "open space" providing limited foraging and hunting grounds, refuge, and limited areas for nesting (Kingery 1998). Such lands often serve as a buffer between natural areas, providing food, cover, nesting, and open -space habitat which allow movement and exchange of plant and animal populations. The vacant agricultural land which is present across the survey area has largely replaced the native shortgrass prairie habitat which would have been present in this region. Herbaceous non-native species and ruderal native species which dominate the vegetation community generally do not provide quality habitat for most wildlife. In general, although agriculture practices have altered the structure, function, community composition, and habitat value of land within a majority of the survey area, some areas do provide a variety of wildlife habitat values in an otherwise agricultural landscape. Within the survey area, significant limitations for wildlife use exist due to land use activities such as regular plowing, tilling and mowing, habitat fragmentation from fences, overgrazing, and general agricultural practices within the survey area. Some other local wildlife species that may use this habitat within the survey area include coyote (Canis latrans), red fox (Vulpes vulpes), rabbit (Lepus sp.), cottontail (Sylvilagus sp.), black tailed prairie dog (Cynomys ludovicianus), white-tailed deer (Odocoileus virginianus), deer mouse (Peromyscus maniculatus), meadow vole (Microtus pennsylvanicus), mourning dove (Zenaida macroura), western meadowlark (Sturnella neglecta), barn owl (Tyto alba), hawks (euteo sp.), and garter snake (Thamnophis sp.). These types of species may utilize the survey area; however, have not specifically been identified within the survey area. 7 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report • Generally, there are features within the survey area and the surrounding area that provide general habitat for local songbirds, raptors, and small to mid -size mammals; however, the habitat within the survey area is characterized primarily as Cultivated Cropland, which is degraded from a wildlife perspective by historic and current land use practices. HIGH PRIORITY HABITAT AREAS Various development projects within Colorado including residential, energy, or transportation, for example, can impact wildlife and their preferred habitat. Therefore, the CPW has listed recommendations to avoid and minimize impacts to wildlife from land use development in Colorado. Specifically, impacts that may occur in high priority habitat (HPH). HPH is defined as an area containing raptor nests and roost sites, grouse and prairie chicken lek sites and occupied ranges, bat hibernacula, migration corridors, production areas, severe winter ranges, winter concentration areas, winter ranges and waters identified as "Gold Medal" waters (within 500 -feet of an ordinary high-water mark) (COGCC 2021). Where proposed projects cannot avoid impacts to wildlife or their preferred habitat and direct mortality or displacement during construction and habitat conversion occur, or direct impacts occur over time from cumulative functional habitat loss from fragmentation and modified habitat use as density increases, compensatory mitigation for wildlife resources may be required per Rule 1203(a) of the COGCC. Within the survey area, the following mapped HPHs are present: Scientific Name Common Name HPH Haliaeetus leucocephalus Bald eagle Winter range Myotis lucifugus Little brown myotis Overall range Odocoileus hemionus Mule Deer Overall range The bald eagle winter range is defined as those areas where bald eagles have been observed between November 15 and April 1. • Refer to Section 5.0 below for a description of eagles and eagle nests. The little brown myotis overall range is defined as an area which encompasses the observed and predicted range of a population of the little brown myotis. The little brown myotis has a widespread range of habitat and often use human -made structures for resting and maternity sites. They typically roost in caves and mines in the winter, and can be found in trees, artificial structures, bat houses, under rocks and in piles of wood in the summer. Foraging habitat requirements are generalized, occurring primarily over streams and other bodies of water, along the margins of lakes and streams or in woodlands near water. Winter hibernation sites like caves, tunnels and abandoned mines generally have a relatively stable temperature of about 2 to 12 Celsius, as documented by T.H. Kunz and J.D. Reichard in 2010. Maternity colonies commonly are in warm sites in buildings, like attics, bat houses, other human structures, and infrequently, in hollow trees (USFWS 2023). • Within the immediate surroundings of the survey area, several private residential homes exist with landscaped trees. Specifically, in the north -central portion of the survey area and in the southeast corner of the survey area. These structures will not be impacted by the proposed 8 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report project. Additionally, directly within the survey area, no artificial structures, caves, mines or other preferred habitat used by the little brown myotis is present. Therefore, impacts to HPH associated with the little brown myotis are not anticipated. Mule deer overall range is defined as the area which encompasses all known seasonal activity areas within the observed range of a mule deer population. Mule deer live throughout Colorado, with the highest densities in the foothills, mountains and western slope in shrubland, riparian woodland, and meadows. Food, cover and water are necessary habitat components for mule deer. • Within the survey area, the land has been subject to agricultural practices including plowing/tilling, which has largely replaced the native shortgrass prairie habitat which would have been present in this region, as noted previously in Section 4.0. Additionally, the site has been fragmented with County Road 42 to the north, Highway 60 to the east, agricultural fields to the south and County Road 25 to the west. During the November 6, 2023 site visit, no mule deer individuals or habitat was present. Therefore, impacts to HPH associated with mule deer are not anticipated. Migratory birds are protected under the Migratory Bird Treaty Act (MBTA) (16 U.S.C. 730-712). The MBTA makes it illegal for anyone to take, possess, import, export, transport, sell, purchase barter, or offer for sale, purchase, or barter any migratory bird, or the parts, nests, or eggs of such a bird except under the terms of a valid permit issued pursuant to Federal regulations. In Colorado, all birds except for the European starling (Sturnus vulgaris), house sparrow (Passer domesticus) and rock pigeon (Columba livia) are protected under the MBTA. A total of 523 migratory bird species are known to occur in the Mountain -Prairie Region (USFWS Region 6, Montana, Wyoming, Utah, North Dakota, South Dakota, Nebraska, Kansas and Colorado); 320 of the 523 migratory bird species are known to breed in USFWS Region 6. Migratory birds likely exist within the survey area. The vegetation communities in the survey area provide at the very least, potential nesting and foraging habitat for migratory birds. These migratory birds are protected under the MBTA and killing or possession of these birds (or their parts and nests) is prohibited under the MBTA. The following migratory birds were directly observed and likely utilize the survey area primarily for foraging and limited seasonal nesting. Scientific Name Common Name Anas platyhychos Mallard Melospiza melodia Song sparrow Non -Raptor Migratory Birds Non -raptor migratory birds likely utilize the survey area for nesting on a seasonal basis. These birds, their eggs, and active nests are protected under the MBTA and take or possession of these resources is prohibited. For these non -raptor migratory birds, only the active nest is protected and no buffers or restricted surrounding areas are required. Once the nest becomes inactive, disturbances can occur to the nest and no further agency authorization or coordination is required. Generally, the active nesting 9 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report season for most non -raptor migratory birds in this region of Colorado occurs between April 1 and August 31. • No non -raptor nests were observed within the survey area. However, seasonal MBTA non -raptor bird nesting activity status can vary seasonally and from year to year. Prior to vegetation removal, a nest survey should be conducted no more than 7-10 days prior any future land use changes to ensure that active nests are not disturbed during the nesting season. Non -eagle Raptors Non -eagle raptor nest sites are regulated by the USFWS under the MBTA with local review from the CPW. The CPW has established recommended protective buffer zones and seasonal activity restrictions for a variety of Colorado raptors (CPW 2020). The CPW species -recommended buffer zones are such that if implemented, should assure that the majority of the individual species will continue to occupy the area. CPW considers a nest to be active when it is frequented or occupied by a raptor during the breeding season, or which has been occupied in any of the five previous breeding seasons. Many raptors use alternate nests in various years. Thus, a nest site may be active even if a particular nest is not occupied in a given year. The CPW also maintains Species Activity Mapping (CPW SAM) data which is an online database that lists the known occurrences, status and recorded nest sites of select raptors and other species within the state of Colorado. • No non -eagle raptor nests were observed and no CPW mapped non -eagle raptor nest protection buffer zones are located within the survey area (CPW 2023a). Inactive raptor nest sites have no regulatory restriction and do not require further agency coordination; however, nest activity status can vary seasonally and from year-to-year. Future land use changes may require additional nest surveys (generally between February 1 and September 15 (CPW 2020)) to determine activity status within % to % mile of the survey area to ensure compliance with CPW recommendations. Eagles No eagle nest sites are identified on the CPW SAM data within the survey area. No eagles or eagle nests were observed during the site visit. • If an eagle nest site were to become established within a %-mile of the survey area or within the survey area, CPW recommends a "No Surface Occupancy" beyond that which has historically occurred. CPW also recommends "No Human Encroachment" within %-mile radius and that no human encroachment activities, including construction activities within %-mile radius of active nest sites from December 1 though July 31. Future land use changes may require an additional nest survey (generally between December 1 and July 31 (CPW 2020) to determine activity status within %-mile of the survey area to ensure compliance with CPW recommendations. The ESA of 1973 was enacted by the United States to conserve endangered and threatened species and the ecosystems that they depend on. Under the ESA, species may be listed as either "endangered" or "threatened"; both designations are protected by law. The ESA is administered by the USFWS. The USFWS has developed project specific species lists, available online by request, identifying threatened, 10 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report endangered, and proposed species, designated critical habitat (USFWS 2008), and candidate species protected under the ESA that may occur within the boundary of a proposed project and/or may be affected by a proposed project (USFWS 2023) (Project Code: 2024-0014946). The species list for the survey area has identified potential for a total of 9 threatened or endangered species within the survey area. Species Not Present The following federally listed threatened and endangered species are identified to occur within Weld County. However, these species are not known to exist within the specific vicinity of the survey area and/or have specific habitat requirements (i.e., elevation range) that are not common in the vicinity of the survey area. Common Name Scientific Name Status* Determination Gray wolf Canis lupus FE NO TAKE Preble's Meadow Jumping Mouse Zapus hundsonius preblei FT NO TAKE Eastern black rail Laterallus jamaicensis FT NO TAKE *Status key: FT— Federally listed as threatened FE —Federally listed as endangered Water Depletions Species The USFWS under the ESA has determined that water depletions in the South Platte River Basin are considered an adverse effect to the listed species identified below. The survey area is considered to be located within the South Platte River Basin. Common Name Scientific Name Status* Determination Pallid sturgeon Scaphirhycchus albus FE NOT PRESENT, NO TAKE^ Piping plover Charadrius melodus FT NOT PRESENT, NO TAKE ^ Western prairie fringed orchid Platanthera praeclara FT NOT PRESENT, NO TAKE^ Whooping crane Grus Americana FE NOT PRESENT, NO TAKE^ Ute ladies'-tressese Sprianthes diluvialis FT NOT PRESENT, NO TAKE^ *Status key: FT— Federally listed as threatened FE — Federally listed as endangered ^The project is associated with a proposed gravel pit mine and a proposed water supply is not known at this time. Any water related project conducted in the Platte River Basin that has a federal nexus; such as federal funding or a federal permit (i.e., Clean Water Act (CWA) Section 404 Permit), is subject to ESA Section 7 Consultation with the USFWS. The consultation is a mandate for water depletion projects that may affect threatened and endangered species that rely on the South Platte River. • The survey area does not contain the specific habitat characteristics necessary to support the species listed above. These species and/or critical habitat is not present within the survey area (USFWS 2008). It is assumed herein that future land use changes would not be considered a new water depletion. Therefore, the project would result in No Take to these species. 11 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Species Potentially within Range The following federally listed threatened and endangered species are identified to occur or historically occur within Weld County (USFWS 2023). The survey area is located within the potential known range for these species to occur. Further analysis was conducted to determine if the species or habitat has the potential to exist within the survey area considering site -specific conditions and characteristics. A brief explanation is provided as to the species life cycle, habitat requirements and potential occurrence within the survey area. The survey area is not within designated critical habitat of any federally listed species (USFWS 2008). Common Name Scientific Name Status* Determination Monarch Butterfly Danaus plexippus C NO TAKE *Status key: C —Candidate listed species MONARCH BUTTERFLY (DANAUS PLEXIPPUS) The monarch butterfly is listed as candidate species under the ESA. Adult monarch butterflies are large and conspicuous, with bright orange wings surrounded by a black border and covered with black veins. The black border has a double row of white spots, present on the upper side of the wings. Adult monarchs are sexually dimorphic, with males having narrower wing venation and scent patches. The bright coloring of a monarch serves as a warning to predators that eating them can be toxic. As a candidate species, the monarch butterfly has no statutory protection under the ESA, however the USFWS encourages cooperative conservation efforts because they are species that may warrant future protection under the ESA (USFWS 2017). • No monarch butterflies or milkweed species were observed within or surrounding the survey area. The survey area historically has been highly modified with agricultural practices. However, future land use changes should consider and describe any planned conservation measures for the monarch butterfly. Conservation measures can include habitat management such as the inclusion of native milkweed plant species in restoration efforts, reducing herbicide and pesticide use within the survey area, and/or creating a conservation easement for habitat protection. Such best management practices will aid in maintaining and/or enhancing the future survival of the monarch butterfly survival. However, these are not regulatory requirements. 12 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Species identified as state threatened or endangered are protected by the CPW under Colorado Statute Title 33. State regulations prohibit "any person to take, possess, transport, export, process, sell or offer for sale, or ship and for any common or contract carrier to knowingly transport or receive for shipment" any species or subspecies listed as state endangered or threatened. The CPW also has identified State Species of Special Concern, which are species or subspecies of native wildlife that are currently vulnerable in their Colorado range and have the potential to become threatened or endangered. Species of Special Concern are not protected under State regulations but the 'take' of individuals and disturbance of their habitat is strongly discouraged. All state listed species were screened as potential inhabitants of the survey area based on general habitat requirements and CPW Species Profiles (CPW 2023b). ERC evaluated the species listed by CPW as threatened or endangered that could potentially exist within the survey area. All animal species listed above as threatened or endangered by the USFWS are also listed by the CPW as threatened or endangered, respectively, therefore were not duplicated below. Species Not Present The following listed threatened and endangered species are identified to occur within the state (CPW 2023b). However, these species are not known to exist within the specific vicinity of the survey area and/or have specific habitat requirements (i.e., elevation range) that are not common in the vicinity of the survey area (CPW 2023b and USFWS 2023). Common Name Scientific Name Status* Boreal toad Bufo boreas boreas SE Southwestern willow flycatcher Empidonax traillii extimus SE Lesser prairie -chicken Tympanuchus pallidicinctus ST Plains sharp -tailed grouse Tympanuchus phasianellus jamesii SE Arkansas darter Etheostoma cragini ST Bonytail Gila elegans SE Razorback sucker Xyrauchen texanus SE Humpback chub Gila cypha ST Colorado pikeminnow Ptychocheilus lucius ST Greenback cutthroat trout Oncorhynchus clarki stomias ST Rio grande sucker Catostomus plebeius SE Lake chub Couesius plumbeus SE Plains minnow Hybognathus placitus SE Suckermouth minnow Phenacobius mirabilis SE Northern redbelly dace Phoxinus eos SE Southern redbelly dace Phoxinus erythrogaster SE Brassy minnow Hybognathus hankinsoni ST Common shiner Luxilus cornutus ST Gray wolf Canis lupus SE Grizzly bear Ursus arctos SE Lynx Lynx canadensis SE 13 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Common Name Scientific Name Status* Wolverine Gulo gulo SE Kit fox Vulpes macrotis SE River otter Lontra canadensis ST *Status key: ST -State listed as threatened SE - State listed as endangered • The survey area does not contain the specific habitat characteristics necessary to support the species listed above. These species and/or critical habitat is not present within the survey area. Therefore, any future land use changes will have no effect on the species, their habitats, or proposed or designated critical habitat. Species Potentially within Range The following state listed threatened and endangered species are identified to occur or historically occur within Weld County. The survey area is located within the potential known range for these species. Further analysis was conducted to determine if the species or habitat has the potential to exist on the survey area considering site -specific conditions and characteristics. A brief explanation is provided as to the species life cycle, habitat requirements and potential occurrence within the survey area. Common Name Scientific Name Status* Black -footed ferret Mustela nigripes SE Burrowing owl Athene cunicularia ST *Status key: ST -State listed as threatened SE - State listed as endangered BLACK -FOOTED FERRET (MUSTELA NIGRIPES) The black -footed ferret (BFF) (Mustela nigripes) is a medium-sized mustelid (a member of the weasel family). The BFF is the only ferret species native to the Americas. Its historical range spanned much of western North America's intermountain and prairie grasslands, extending from Canada to Mexico. Historically, BFF habitat coincided with habitats of black -tailed prairie dog (C. Iudovicianus), Gunnison's prairie dog (C. gunnisoni), and white-tailed prairie dog (C. Ieucurus). Prairie dogs make up more than 90% of the BFF's diet. BFFs are limited to open habitat, the same habitat used by prairie dogs: grasslands, steppe, and shrub steppe. It depends largely on prairie dogs: ferrets prey on prairie dogs and utilize their burrows for shelter and denning (Hillman and Clark, 1980). It has been estimated that about 40-60 hectares of prairie dog colony are needed to support one ferret (Belant and Biggins 2008). BFFs once numbered in the tens of thousands, but due to a combination of human -induced threats they were believed to be extinct twice in the 20th century. As of 2015, BFFs have been reintroduced in the wild at 24 sites across 8 states, Canada, and Mexico. • No BFF individuals were observed on or surrounding the survey area. The survey area is located within the overall range of the black -tailed prairie dog; however, no colonies were observed within the survey area. Further, the survey area occurs within the block clearance zone for black -footed 14 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report ferret surveys (USFWS 2009). Any future land use changes within the survey area should have no effect on the continued existence or potential habitat of this species. BURROWING OWL (ATEHENE CUNICULARIA) The burrowing owl (Owl) is listed as a state threatened species in Colorado. The Owl is small (length of 24 centimeters), long-legged, boldly spotted, and barred with brown and white. The Owl is a breeding species across the plains of eastern Colorado however rarely winters in the state. Nesting habitat is in burrows, especially in both active and inactive prairie dog colonies, located in grasslands, mountain parks, well -drained steppes, deserts, prairies, and agricultural lands from late March through October. The Owl can usually be observed on low perches such as fence posts, dirt mounds or the ground. Clutch size of this Owl averages six to seven and incubation lasts up to 30 days. The owlets usually run and forage at 4 weeks and fly at 6 weeks. Primary threats to existence of this species are habitat loss due to intensive agriculture, habitat degradation and fragmentation due to control of burrowing mammals and predation by cats and dogs. • No Owl individuals were observed on or surrounding the survey area. The survey area is located within the overall range of the black -tailed prairie dog; however, no black -tailed prairie dog colonies are located within the survey area. Much of the land within the survey area is regularly plowed/tilled which further limits the potential use of the survey area by this species. Therefore, any future land use changes within the survey area should have no effect on the continued existence or potential habitat of this species. ERC has conducted this screening for federal and state listed threatened and endangered species and general wildlife for the approximately 152 -acre survey area. The following provides key items identified as part of this report: 1. Two primary land use class/vegetation cover types exist within the survey area. Habitat within the survey area is characterized as Cultivated Cropland (95%) and Disturbed (5%). Historic land use for agricultural practices has led to degradation of the native vegetation community. 2. Generally, there are features on the survey area and the surrounding area that provide general habitat for local songbirds, raptors, and small to mid -size mammals. However, habitat within the survey area is somewhat degraded and of lower ecological value from a wildlife perspective due to historic and current land use for agriculture, which has restricted overall growth and establishment of vegetation. Per the CPW SAM data, High Priority Habitat was mapped for bald eagle winter range, little brown myotis overall range and mule deer overall range. The survey area has been subject to frequent agricultural practices, is fragmented on all sides and does not contain the necessary habitat to support the listed species. Therefore, impacts to HPH associated with the listed species is not anticipated. 15 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report 3. Non -raptor birds No non -raptor migratory bird nests were observed within the survey area. However, prior to vegetation removal a nest survey should be completed to ensure that no nests have become established within the survey area and active nests, if any, are not disturbed. Non -eagle Raptors No non -eagle raptor nests were observed and no CPW mapped non -eagle raptor nest protection zones are located within the survey area (CPW 2023a). However, nest activity status can vary seasonally and from year-to-year. Future land use changes may require additional nest surveys (generally between February 1 and September 15 (CPW 2020)) to determine activity status within to % mile of the survey area to ensure compliance with CPW recommendations. Eagles No eagle nests or eagles were observed and no CPW mapped eagle nests are located within the survey area (2023a). However, nest activity status can vary seasonally and from year-to-year. If a nest does become established within a %-mile of the survey area or within the survey area, CPW recommends a "No Surface Occupancy" and "No Human Encroachment" within %-mile radius of active nest sites from December 1 through July 31. Future land use changes may require an additional nest survey (generally between December 1 and July 31 (CPW 2020) to determine activity status within %-mile of the survey area to ensure compliance with CPW recommendations. 4. No federally listed threatened and endangered species and/or habitat protected under the ESA were identified within the survey area. The survey area is not within designated critical habitat of any federally listed species (USFWS 2008). The vegetation community and features within the survey area were investigated as potential habitat for federally listed species. Any future land use changes will result in No Take on any federal listed species, their habitats, or proposed or designated critical habitat. 5. No State listed threatened or endangered species and/or habitat protected by CPW under Colorado Statute Title 33 were identified within the survey area. The vegetation communities within the survey area were investigated as potential habitat for state listed species. Any future land use changes will have no effect on any state listed species, their habitats, or proposed or designated critical habitat. This report has been prepared by: ECOLOGICAL RESOURCE CONSULTANTS, INC. Tyler Wo`r1ey, Proj ct Ecologist, Certified Ecologist (303) 679-4820 x 105 / tyler@ercolorado.net Reviewed and approved by: David J. Blauch, V.P., Senior Ecologist PWS #2130 (303) 679-4820 x102 / dave@erccolorado.net 16 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Belant, J., Gober, P. & Biggins, D. 2008. Mustela nigripes. The IUCN Red List of Threatened Species 2008: e.T14020A4382826. http://dx.doi.org/10.2305/IUCN.UK.2008.RLTS.T14020A4382826.en. COGCC. Colorado Oil and Gas Conservation Commission. Protection of Wildlife Resources. 1200 Series. 2021. CPW. Colorado Parks and Wildlife. 2020. Recommended Buffer Zones and Seasonal Restrictions for Raptors. Available online at: https://cpw.state.co.us/Documents/Wild lifeSpecies/LivingWithWiIdlife/RaptorBufferGuidelines200 8.pdf CPW. Colorado Parks and Wildlife. 2023a. Species Activity Mapping (SAM), Geographic Information Systems (GIS) Data. Updated December. Available online at: http://www.arcgis.com/home/item.html?id=190573c5aba643a0bc058e6f7f0510b7 CPW. Colorado Parks and Wildlife. 2023b. Threatened and Endangered List. Available at http://cpw.state.co.us/learn/Pages/SOC-ThreatenedEndangeredList.aspx Federal Register. May 2000. Vol. 65, Number 96, pages 31298-31299. Proposed Rules: Endangered and Threatened Species: Colorado Butterfly Plant. Department of the Interior. U.S. Fish and Wildlife Service. Kingery, Hugh. Colorado Breeding Bird Atlas. Colorado Bird Atlas Partnership 1998. NatureServe 2023. NatureServe Explorer Central Database. Ecological Association Comprehensive Report. Available online at: http://explorer.natureserve.org. November. USFWS. US Fish & Wildlife Service. 2007. National Bald Eagle Management Guidelines. Available online at: https://www.fws.gov/sites/default/files/documents/national-bald-eagle-management- guidelines 0.pdf USFWS. US Fish & Wildlife Service. 2008. Mapped Critical Habitat for Threatened & Endangered Species. Available online at: http://criticalhabitat.fws.gov/ USFWS. US Fish & Wildlife Service. 2009. USFWS Block -cleared Areas for Black -Footed Ferret Surveys in Colorado. September. Available online at: http://www.fws.gov/mountain- prairie/species/mammals/blackfootedferret/BlockClearanceMap2009SeptemberColoradoState.pdf USFWS. US Fish & Wildlife Service. 2017. Section 4 of the Endangered Species Act. Candidate Species. USFWS. US Fish & Wildlife Service. 2023. Official Species List. List of threatened and endangered species that may occur in your proposed project location, and/or may be affected by your proposed project. Project Code: 2024-0014946. November 9, 2023. 17 EXHIBIT I Soils Information According to the Soil Survey of Weld County, Colorado, Southern Part, (United States Department of Agriculture, Natural Resource Conservation Service, Web Soil Survey 2.0, National Cooperative Soil Survey), there are four major soil types within the project area: 1. Altvan loam, 0 to 1 percent slopes 2. Ascalon loam, 0 to 1 percent slopes 3. Julesberg sandy loam, 0 to 1 percent slopes 4. Olney fine sandy loam, 0 to 1 percent slopes The location of these soil types relative to the project area is illustrated on the attached Natural Resources Conservation Service map and legend. Detailed descriptions of each NRCS soil type are below. Map Unit: 1 — Altvan loam, 0 to 1 percent slopes Map Unit: 8 — Ascalon loam, 0 to 1 percent slopes Map Unit: 29 — Julesberg sandy loam, 0 to 1 percent slopes Map Unit: 46 — Olney fine sandy loam, 0 to 1 percent slopes See attached NRCS report for the permit boundary area. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT J Vegetation Information The project site was surveyed for both general vegetation and for the presence of possible wetland areas by Ecological Resource Consultants (ERC). The site consists predominantly of cultivated cropland with small areas of disturbed vegetation around agricultural outbuildings and a single-family home. The vegetation community characterized within the survey area has been disturbed by historic and current land use practices associated with agriculture. Therefore, existing upland vegetation within the survey area represents somewhat degraded forms of these natural vegetation associations. The upland habitats across the survey area are dominated by FAC-UPL species with dry and light-colored soils throughout. Hydric soils, a dominance of hydrophytic vegetation, and/or wetland hydrology were not present in the upland habitats within the survey area. ERC's wetland delineation report is attached which includes descriptions of the general vegetation found on the site and no wetlands were found in the area that are going to be disturbed. The Western Mutual Ditch will not be impacted by the mining proposed for this site. The weed control plan for the site will be as follows and will be discussed and revised if needed by meeting with Tina Booton who is with Weld County's Weed Division Supervisor: Mechanical and Chemical Control — Mowing will occur throughout the growing season in order to keep the plants from going to seed. Mowing will be terminated in late August followed by a herbicide treatment during late September through October — before a hard frost. Where controls cause vegetation to be removed, re -seeding will occur with native grass specified for the area per Weld County's recommendations and the re -seeding will occur the season after the weed control measures have been implemented. Chemical Control Only — A herbicide application will be applied from rosette to bud stage. This will be followed up with a fall application, if needed. The applicator (licensed if required by law for the type of herbicide) must read the label and use a herbicide labeled for the weeds present at the site. Noxious weed species to be managed are defined as those plant species currently identified by the Colorado State Department of Agriculture (CDA) as noxious under the Colorado Noxious Weed Act. The list is often updated and available at: https://www.colorado.gov/pacific/agconservation/noxious-weed-species Management efforts will be directed to those species identified under List A or List B by the CDA. List A species are required to be eradicated, while List B species will be controlled. Efforts to address List C species will follow guidelines of the Weld County Public Works Weed Management Division. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application AEcological Resource Consultants, LLC 2820 Wilderness Place. Suite A I Boulder. CO 80301 113031679-4820 2820 Wilderness Place, Suite A I Boulder, CO 180301 I (303) 679-4820 March 26, 2024 J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 RE: Aquatic Resource Delineation and Waters of the US Ecological Resource Consultants, LLC (ERC) completed an Aquatic Resource Delineation Report (11-22- 2023) (ERC 2023) for the Meining Property Project Site (Site) located in Weld County, Colorado. ERC 2023 represents a formal aquatic resource delineation in accordance with current US Army Corps of Engineers (USACE) methodologies. ERC 2023 identified three aquatic resources, totaling 2.369 acres, on the Site consisting of an irrigation ditch (Aquatic Resource A) and two irrigation ponds (Aquatic Resource B and C). The following summarizes the current jurisdictional status of each resource under Clean Water Act Section 404. The irrigation ditch (Aquatic Resource A) on Site, would likely not be considered non -jurisdiction, however the project does not propose any disturbance to this resource. • Therefore, if no disturbance is proposed to Aquatic Resources A, no USACE Clean Water Act Section 404 permitting would be required. The two irrigation ponds (Aquatic Resource B and C) meet the exclusion in (b)(5) Artificial lakes or ponds created by excavating or diking dry land to collect and retain water and which are used exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing. • Therefore, Aquatic Resources B and C are not considered a Water of the United States and would not require USACE Clean Water Act Section 404 permitting. In summary, the project as proposed would not impact Waters of the US and therefore would not require USACE Cean Water Act Section 404 permitting. Best Regards, David J. Blauch, V.P., Senior Ecologist (PWS # 2130) (303) 679-4820 x102 / dave@erccolorado.net Eceila;44ca8 Rismorms trquidtan tis, ELC 2820 Wilderness Place, Suite A- Boulder, CO 80301- {303} 679-4820 AQUATIC RESOURCE DELINEATION REPORT FOR MEINING PROJECT SITE WELD COUNTY, COLORADO NOVEMBER 22, 2023 Prepared For: J&T Consulting, Inc. 305 Denver Avenue Suite D Fort Lupton, CO 80621 Contact: JC York Email: jyork@j-tconsulting.com Prepared By: Ecological Resource Consultants, LLC. 2820 Wilderness Place, Suite A Boulder, Colorado 80301 ERC Project #420-2310 Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 EXECUTIVE SUMMARY Project Name Meining Property Applicant/Owner J&T Consulting, Inc. Survey Area Size (Acres) 152 acres County, State Weld, Colorado Methodology 1987 Corps of Engineers Wetlands Delineation Manual Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0) 2008 Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States Summary of Findings Aquatic Resource ID Size (acres) Connectivity' (Yes/No) Classificationz Description A 2.114 Yes R4SBAx Irrigation Ditch. Assumed connection to Union Ditch and to Latham Ditch and to the South Platte River B 0.141 No PABFx Irrigation Pond C 0.114 No PABFx Irrigation Pond Total Aquatic Resources 2.369 acres Note: All areas that have been investigated in the field are mapped on the enclosed Aquatic Resource Delineation Map (Appendix A). 1 Connectivity Yes=Direct surface connection to other Waters of the US identified. No=No direct surface connection to other Waters of the US identified. 2 Habitat Type based on Cowardin et al. 1979. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 1.0 Introduction 1 2.0 Survey Area Location 1 3.0 Methodology 4 4.0 Existing Conditions 5 4.1 Landscape Setting 5 4.2 Aquatic Resources 7 Aquatic Resource A (2.114 acres) 7 Aquatic Resource B (0.141 acres) 8 Aquatic Resource C (0.114 acres) 9 4.3 Upland Habitat 10 4.4 Plant Speices Identified Within The Survey Area 11 4.5 Aquatic Resoruce Connectivity Assessment 11 5.0 References 14 Aquatic Resource Delineation Map Overview ERC Wetland Determination Data Forms Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 This report summarizes the delineation of aquatic resources completed by Ecological Resource Consultants, LLC. (ERC) on behalf of J&T Consulting for the Meining Property Project Site (survey area). This report documents aquatic resource boundary determinations for verification and jurisdictional review by the United States Army Corps of Engineers (USACE), Omaha District Denver Regulatory Office. Project Contact information Applicant/Owner Representative Company Name J&T Consulting, Inc. Ecological Resource Consultants, LLC. Contact Name JC York Natalie Rothman Address 305 Denver Avenue, Suite D Fort Lupton, CO 80621 2820 Wilderness Place, Suite A Boulder, CO 80301 Phone 303-857-6222 303-679-4820 x116 Email Jcyork@j-tconsulting.com natalie@erccolorado.net State Colorado County Weld County Parcel #s 105730100039, 105730100042 Nearest Town Gilcrest Street Address/ Nearest Intersection Southwest property at the intersection of Weld County Road 42 and CO Highway 60 Latitude, Longitude (Center of Survey Area) 40.286121 °N, -104.815663° W Section, Township, Range Section 30, Township 4 North, Range 66 West Direction from Denver Regulatory Office From the USACE Denver Regulatory Office, travel approximately 13.4 miles on CO470 to 170. Exit east and continue on 1-70 approximately 9.4 miles. Then exit onto 1-76 and continue for 5 miles. Take Exit 5 towards Fort Collins and stay on 1-25 North for 27 miles. Take Exit 243 and head east on CO -66 for 8.4 miles. Then turn left on US -85 N for 3 miles. Turn left again onto CO - 60 and continue until reaching the intersection with County Road 42. Refer to Figure 1 for a location map and a U.S. Geological Survey (USGS) topographic map of the survey area. Refer to Figure 2 for the NRCS Web Soil Survey. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 weir ,ASP. Prepared 8y. MUTUAL! Fol t Callitt; 6reeley Lo*ont Bois r A ERC 2820 Wilderness Pl. Ste R Boulder, CO 80301 (303) 679-4820 ERC tt: 420.2310 WcIJ 4746 OITCM r T 3,1: 4762 FIGURE 1 LOCATION & TOPOGRAPHIC MAP MEINING PROPERTY WELD COUNTY, COLORADO Legend * Approximate Location _ Survey Area Boundary (152 ac) 0 1.000 2.000 BM S 768 4,000 Feet Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Figure 2. NRCS Web Soil Survey Map ti i_1 D� Map Unit Symbol Map Unit Name Acres (+/-) Hydric soil (Yes/No)3 1 Altvan loam, 0 to 1 percent slopes 6.8 Yes 8 Ascalon loam, 0 to 1 percent slopes 31.3 No 29 Julesberg sandy loam, 0 to 1 percent slopes 69.6 No 46 Olney fine sandy loam, 0 to 1 percent slopes 44.7 No s Hydric (Yes/No) — obtained from the USDA NRCS Web Soil Survey Map Unit Description Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 The aquatic resource delineation was conducted following the methodology enumerated in the 1987 Corps of Engineers Wetlands Delineation Manual and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0) (herein referred to as "Supplement") (Environmental Laboratory 1987, USACE 2010). During the field inspection, dominant vegetation was recorded, representative hydrologic indicators were noted, and soil samples were examined for hydric indicators. The USACE and the Environmental Protection Agency (USEPA) jointly define wetlands as: "those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions" [40 CFR 230.3(t)]. Three general environmental parameters define a wetland. These parameters must include the presence of hydrophytic vegetation, hydric soils, and wetland hydrology. Except under certain situations, evidence of a minimum of one positive wetland indicator from each of the above parameters must be identified in order to make a positive wetland determination. In addition, waters of the U.S. are also defined as areas that "include essentially all surface waters such as rivers, streams and their tributaries, all wetlands adjacent to these waters, and all ponds, lakes and reservoirs" The boundaries of some waters of the U.S. (i.e., such as streams or lakes) are further defined by the ordinary high water mark (OHWM). The OHWM is characterized as "the line on the shores established by the fluctuations of water and indicated by physical characteristics such as: a clear natural line impressed on the bank, shelving, changes in the character of the soil, wetland vegetation, the presence of litter and debris, and other appropriate means that consider the characteristics of the surrounding areas" (USACE 2005). These definitions are the basis of this delineation method. Areas that do not meet any one of the wetland parameters (hydrophytic vegetation, hydric soils and/or wetland hydrology) or non -vegetated stream channel/open water (OHWM) were classified as a non - wetland (upland) and mapped as such. Any area determined to be potential waters of the U.S. was delineated in the field with pink flagging identified with 'WETLAND BOUNDARY' printed on it and sequentially labeled alpha -numerically (i.e., Al, A2...). Each wetland determination point was recorded using a hand-held Trimble GeoXH global positioning system (GPS) receiver. The resulting GPS data were post processed using GPS Pathfinder Office 5.85 software. Post processing differential correction provided an average horizontal mapping accuracy of +/- 2 feet. Post -processed GPS data were imported into ArcMap Geographic Information Systems (GIS) (Version 10.6) for spatial analysis and mapping. All aquatic resources delineated within the survey area are depicted on the Aquatic Resource Delineation Map (Appendix A). Wetland Determination data sheets are provided in Appendix B. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Average Elevation (Feet AMSL) 4,760' Topography Generally flat; sloping southeast Subregion (LRR) LRR G (69 — Upper Arkansas Valley Rolling Plains) Watershed HUC Wildcat Mound -South Platte River - 101900030604 Nearest Waterbody South Platte River Current Landuse Agricultural Historic Landuse Agricultural Dominant Vegetation Communities Cultivated Cropland Reference (NatureServe 2023); (SWReGAP 2011) Vegetation Description The cultivated cropland community is characterized as a non - natural system which includes lands used for the production of annual crops where crop vegetation accounts for greater than 20 percent of the total vegetation and where the land is actively tilled. This community also includes all land being actively tilled. The cultivated cropland community within the survey comprises relatively flat agricultural fields currently planted with corn (Zea mays), and row crops including winter wheat (Triticum aestivum). The agricultural fields appear to be regularly plowed and/or tilled and subject to flood irrigation practices throughout the growing season. Other Vegetation Communities Disturbed Reference (NatureServe 2023) Vegetation Description These features consist of barren grounds associated with oil and gas related activities, closely cropped vegetation such as lawns and landscaping, and urban materials such as buildings and pavement. Tree canopy varies from 0 to 50% (e.g., open to shaded lawns and gardens). Notable Features None. Dates of Field Work November 6, 2023. Weather Sunny, 70 ° F. Typical Climatic/Hydrologic Condition Normal conditions for time of year. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Refer to Photos 1-6 below for general characteristics of the survey area. Photo 1. Overview facing southwest from the northeastern corner of the survey area. The survey area is primarily a large agricultural field of corn and wheat, which was partially plowed at the time of visit. Photo 3. View northwest of the Western Mutual Ditch on the left side, a farm access road, and active agricultural fields on both sides of the ditch. Photo 4. View facing east from the northwest corner showing corn fields and CO Highway 60 in the upper left background. Photo 5. View facing north with Western Mutual Ditch in the foreground with the survey area boundary directly on the far side of the ditch. The field and buildings in the background are on the adjacent property to the north. Photo 2. Overview facing northwest from around the center point of the survey area. Down the center of the photo is Western Mutual Ditch, an irrigation ditch that separates the northwest portion of the survey area. Li.. Photo 6. View facing north from County Road 25 %, the southernmost edge of Western Mutual Ditch within the survey area. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Delineated aquatic resources were classified according to the physical and biological characteristics using the Classification of Wetlands and Deepwater Habitat of the United States (Cowardin Classification System) (Cowardin et al. 1979). Within the survey area, wetland habitat types were classified based on field evaluation and are summarized in Table 1. Table 1. Summary of Aquatic Resources Delineated Within the Survey Area Aquatic Resource Name Classification Acres Linear Feet Feature Type 4Cowardin Location (lat/long) A R4SBAx 40.28761°N -104.8153°W 2.114 3,290.517 Irrigation Ditch B PABFx 40.28764°N -104.8142°W 0.141 -- Irrigation Pond C PABFx Total 40.28792°N -104.8141°W 0.114 2.369 -- -- Irrigation Pond -- A total of 2.369 acres of aquatic resources were delineated by ERC within the survey area. A description of aquatic resource habitat types is provided below. The Aquatic Resource Delineation Maps are provided in Appendix A. Wetland Determination data sheets are provided in Appendix B. Refer to Table 3 for a list of plant species identified within the survey area (Lichvar et al. 2016). AQUATIC RESOURCE A (2.114 ACRES) Aquatic Resource A is a segment of Western Mutual Ditch, an irrigation ditch used for agricultural purposes. The ditch is classified as R4SBAx habitat, being that the riverine system is intermittent, flooded for short periods during growing season, and man-made. Hydrology within the Western Mutual Ditch appears to be supported by surface water run-off from the surrounding upland areas as well as irrigation flows during the growing season. Western Mutual Ditch has a direct surface water connection to the South Platte River, a known Traditional Navigable Waterway (TNW) through various irrigation ditches located downstream. The Western Mutual Ditch appears, via aerial imagery, to flow 9.2 miles northeast and into Union Ditch near La Salle, Colorado. Union Ditch appears to flow 13.8 miles northeast and into Latham Ditch. From Latham Ditch, flows appear to be conveyed 19.2 miles east and into the South Platte River. The ditch was delineated based on the presence of hydrophytic vegetation, hydric soils, and hydrology. Hydrophytic vegetation is significantly disturbed. Due to irrigational flows, all vegetation is stripped from within the ditch. As a result, the OHWM is made more apparent from the vegetation line. Soils within the ditch are generally sandy in texture, meeting the criteria for hydric soil indicator $6 (Stripped Matrix). At the time of the delineation, primary wetland hydrology indicators B1 (Water Marks) 4 Habitat Type based on Cowardin et al. 1979. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 and B3 (Drift Deposits) were observed. Additionally, secondary hydrology indicators included B8 (Sparsely Vegetated Concave Surface), B10 (Drainage Patterns), and D2 (Geomorphic Position). Aquatic Resource A comprises a total of 2.114 acres within the survey area (Appendix A). Refer to photos 7-8 below for characteristics within Aquatic Resource A. Photo 7. Overview facing north from the middle of Aquatic Resource A, Western Mutual Ditch. This irrigation ditch is seasonally flooded during the growing season. The wetland boundary is depicted by the blue line. AQUATIC RESOURCE B (0.141 ACRE) Photo 8. View facing southwest from the approximate midpoint of the stretch of Aquatic Resource A within the survey area. The wetland boundary is depicted by the blue line. Aquatic Resource B is an irrigation pond within the northeastern quadrant of the survey area. The irrigation pond is classified as a palustrine aquatic bed semi -permanently flooded excavated (PABFx) Freshwater Pond habitat. Hydrology within the pond appears to be supported by surface water run-off from the agricultural field as well as irrigation flows from Aquatic Resource A (Western Mutual Ditch) when needed. The pond was delineated based on the presence of hydrophytic vegetation, hydric soils and hydrology. The only vegetation present within the pond was Pennsylvania Smartweed (Polygonum pensylvanicum). The vegetation within the pond was a hydrophytic species (FACW). Soils within the pond are generally sandy in texture, meeting the criteria for hydric soil indicator S5 (Sandy Redox). At the time of the delineation, primary wetland hydrology indicators Al (Surface Water), A3 (Saturation), and B1 (Water Marks) were observed. Additionally, secondary hydrology indicators included B8 (Sparsely Vegetated Concave Surface), D2 (Geomorphic Position), and D5 (FAC-Neutral Test). Aquatic Resource B comprises a total of 0.141 acre within the survey area (Appendix A). Refer to photos 9-10 below for characteristics within Aquatic Resource B. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 �r Photo 9. Overview facing north of Aquatic Resource B, an Photo 10. View facing northeast of Aquatic Resource B, an irrigation pond within the northeast quadrant of the survey irrigation pond. The boundary is depicted by the blue line. area. This pond is fed by irrigation water from the Western Mutual Ditch, Aquatic Resource A. The boundary is depicted by the blue line. AQUATIC RESOURCE C (0.114 ACRE) Aquatic Resource C is an irrigation pond in the northeastern quadrant of the survey area, adjacent to Aquatic Resource B. The pond contains a PABFx habitat as well. The hydrology is primarily supported by surface water run-off from the surrounding agricultural fields as well as irrigation flows from Aquatic Resource A, the Western Mutual Ditch via a valve, when needed. The irrigation pond was delineated based on the presence of hydrophytic vegetation, hydric soils, and hydrology. The only vegetation present within the pond was Pennsylvania Smartweed (Polygonum pensylvanicum). The vegetation within the pond was a hydrophytic species (FACW). Soils within the pond are generally sandy in texture, meeting the criteria for hydric soil indicator S5 (Sandy Redox). At the time of the delineation, primary wetland hydrology indicators Al (Surface Water), A3 (Saturation), and B1 (Water Marks) were observed. Additionally, secondary hydrology indicators included B8 (Sparsely Vegetated Concave Surface), D2 (Geomorphic Position), and D5 (FAC-Neutral Test). Aquatic Resource C comprises a total of 0.114 acre within the survey area (Appendix A). Refer to photos 11-12 below for characteristics within Aquatic Resource C. Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Photo 11. Overview facing southwest of Aquatic Resource C, an irrigation pond in the northeast quadrant of the survey area. This pond is fed by irrigation water from the Western Mutual Ditch, Aquatic Resource A. The boundary is depicted by the blue line. Photo 12. Overview facing south of Aquatic Resource C, an irrigation pond. The boundary is depicted by the blue line. The wetland delineation identified approximately 149.9 acres of upland habitat within the survey area, consisting predominantly of cultivated cropland with small areas of disturbed vegetation around agricultural outbuildings and a single-family home. Topography across the survey area is generally flat with a topographic high point of 4,762 feet at the southwestern corner of the survey area. The vegetation community characterized within the survey area has been disturbed by historic and current land use practices associated with agriculture. Therefore, existing upland vegetation within the survey area represents somewhat degraded forms of these natural vegetation associations. The upland habitats across the survey area are dominated by FAC-UPL species with dry and light-colored soils throughout. Hydric soils, a dominance of hydrophytic vegetation, and/or wetland hydrology were not present in the upland habitats within the survey area. Refer to Table 3 for a list of plant species identified within the survey area (Lichvar et al. 2016). Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Agropyron cristatum Bassia scoparia Bothriochloa ischaemum Bouteloua dactyloides Hesperostipa comata Poa fendleriana Polygonum pensylvanicum Rumex crispus Salsola kali Sporobolus cryptandrus Tribulus terrestris Triticum aestivum Zea mays Crested Wheatgrass Kochia Yellow bluestem Buffalograss Needle -and -thread grass Muttongrass Pennsylvania smartweed Curly Dock Russian Thistle Sand dropseed Caltrop Bread wheat Indian Corn UPL FACU UPL FACU UPL UPL FAC W FAC FACU FACU UPL UPL UPL * Wetland Indicator Status (WIS) — Great Plains Regions: OBL = occurs in aquatic resources > 99% of time FACW = occurs in aquatic resources 67-99% of time FAC = occurs in aquatic resources 34-66% of time FACU = occurs in aquatic resources 1-33% of time UPL = occurs in uplands > 99% of time WIS Source: Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X http://www.phytoneuron.net/ Aquatic Resource A, the Western Mutual Ditch (Yellow line on Figure 3), originates from the South Platte River (Red star on Figure 3). From the survey area, Aquatic Resource A conveys flows northeast approximately 9.2 miles and into Union Ditch (Purple line on Figure 3). From Union Ditch, flows are conveyed northeast approximately 13.8 miles and into Latham Ditch (Green line on Figure 3). From Latham Ditch, flows are conveyed east approximately 19.2 miles and into the South Platte River (Yellow star on Figure 3). Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Figure 3. Connectivity Assessment • Gilcst Re -1 f•,_ a Jrf+ Gikest - r r y . • 'iv _ c • o "' Platte VA.R r ; -y :. 0117.1v• ! .., , 1. Red star —Western Mutual Ditch Intake from the South Platte River 2. Yellow line — Western Mutual Ditch 3. Purple polygon — Survey Area 4. Turquoise line — Union Ditch 5. Green line — Latham Ditch 6. Yellow star — Confluence with the South Platte River Table 3. Aquatic Resource Connectivity Assessment Connectivity to the Waters of the U.S. Aquatic Resource Name Connectivity Path and Direction Endpoint Feature Type A Aquatic Resource A is the Western Mutual Ditch, an irrigation ditch bisecting the survey area from the southwest. Through aerial imagery, it appears the Western Mutual Ditch flows 9.2 miles northeast and into Union Ditch. From Union Ditch, flows appear to be conveyed northeast 13.8 miles and into Latham Ditch. From Latham Ditch, flows appear to be conveyed east 19.2 miles and into the South Platte River. South Platte River R4SBAx — Seasonal flooding intermittent channel, human -excavated B Aquatic Resource B is an irrigation pond in the northeast quadrant of the survey area. The pond connects to Western Mutual Ditch, flowing into the South Platte River, which is waters of the U.S. Uplands PABFx — Semi -permanently flooded freshwater pond, human -excavated C Aquatic Resource C is an irrigation pond in the northeast quadrant of the survey area. The pond connects to Western Mutual Ditch, flowing into the South Platte River, which is waters of the U.S. Uplands PABFx — Semi -permanently flooded freshwater pond, human -excavated Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 This report has been prepared by: ECOLOGICAL RESOURCE CONSULTANTS, INC. Natalie Rothman, Staff Ecologist (303) 679-4820 x116 / Natalie@erccolorado.net Reviewed and approved by: David J. Blauch, V.P., Senior Ecologist (PWS # 2130) (303) 679-4820 x102 / dave@erccolorado.net Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Cowardin, L. M., V. Carter, F. C. Golet, and E. T. La Roe. 1979. Classification of wetlands and deepwater habitats of the United States. FWS/OBS-79/31. USDI Fish & Wildlife Service, Office of Biological Services, Washington, DC. 103 pp. Environmental Laboratory. 1987 Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87- 1, U.S. Army Corps of Engineer Waterways Experiment Station. Vicksburg, MS. Faber-Langendoen. 2014. Divisions, Macrogroups and Groups for the Revised US. National Vegetation Classification. NatureServe, Arlington, VA. Plus appendices (in preparation). Google Earth Imagery. 2023. Available online at https://www.google.com/earth/. November. Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X NatureServe 2023. NatureServe Explorer Central Database. Ecological Association Comprehensive Report. Available online at: http://explorer.natureserve.org. November. Natural Resource Conservation Service (NCRS). Web Soil Survey. Soil Map. Available online at: https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx. November U.S. Army Corps of Engineers (USACE). 2005. Regulatory Guidance Letter, Subject: Ordinary High Water Mark. RGL 05-05. Department of the Army, Washington, D.C. http://www.usace.army.mil/Portals/2/docs/civilworks/RGLS/rgl05-05.pdf. U.S. Army Corps of Engineers (USACE). 2010. USACE. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-10-1. Vicksburg, MS: U.S. Army Engineer Research and Development Center. Available online at: http://www.usace.army.mil/Portals/2/docs/civilworks/regulatory/reg supp/gp supp.pdf Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 NOTES: 1. THE SURVEY AREA IS LOCATED IN WELD COUNTY, COLORADO; SECTION 30; TOWNSHIP 4 NORTH; RANGE 66 WEST. 2. AQUATIC RESOURCE LOCATIONS WERE FIELD DELINEATED BY ERC, USING THE 1987 CORPS OF ENGINEERS WETLANDS DELINEATION MANUAL AND THE REGIONAL SUPPLEMENT TO THE CORPS OF ENGINEERS WETLAND DELINEATION MANUAL; GREAT PLAINS REGION (VERSION 2.0) (MAY 2010). 3. THE AREAS WERE FIELD DELINEATED AND MAPPED ON NOVEMBER 6AND 17, 2023 WITH HAND-HELD SUB -METER ACCURACY GLOBAL POSITIONING SYSTEM (GPS) EQUIPMENT (+/-2 FEET). AQUATIC RESOURCE MAPPING WAS PREPARED BY ERC USING GEOGRAPHIC INFORMATION SYSTEMS (GIS). 4. SATELLITE IMAGERY WAS OBTAINED FROM ESRI WORLD IMAGERY (MAXAR) DATED NOVEMBER 2, 2023. 5. THE PROJECTED COORDINATE SYSTEM FOR THE AQUATIC RESOURCE DELINEATION MAPPING IS: NAD83/COLORADO STATE PLANE NORTH, FEET. 6. REFER TO THE AQUATIC RESOURCE DELINEATION REPORT FOR MORE DETAILED INFORMATION. AL ERZ 2820 Wilderness Pl. Ste A Boulder, CO 80301 (303) 679-4820 ERC #: 420-2310 Summary of Aquatic Resources Delineated Within the Survey Area Aquatic • Resource ico wardln Name H95HAr >'/V k1Fx NAHFx Prepared By: Classification location (Lys/long] 40.28761'N - 104.8153"W 40.28764"N 104.8142`W 40.28792'N 104 8141`W Legend Connectivity Acres Linear Feet to Waters of the U.S. :i,19(1.Si 1 Endpoint South Platte Rmer Uplands upl,,ndz Aquatic Resource C Aquatic Resource B atic Resource A JSurvey Area (152 ac) Delineated Aquatic Resource Data Point Location & ID Habitat Type (Cowardin) o Flag Point PABFx Flow Direction R4SBAx APPENDIX A AQUATIC RESOURCE DELINEATION MAP MEINING PROPERTY WELD COUNTY, COLORADO d� dD 0 375 750 1,500 Feet Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Engineering City/County: Gilcresh / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - A17U Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28611 °N Soil Map Unit Name: Ascalon loam, 0-1% slopes Slope (%): 0 Long: -104.8194 °W Datum: NAD83 NWI classification: NA Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR-A17W. Data point situated above the Western Mutual Ditch in uplands. Survey area is frequently tilled/plowed for agricuture. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 3 (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 20 x 4 = 80 1. Poa fendleriana 40 Yes UPL UPL species 80 x 5 = 400 2. Bothriochloa ischaemum 25 Yes UPL Column Totals: 100 (A) 480 (B) 3. Sporobo/us cryptandrus 20 Yes FACU Prevalence Index = B/A = 4.80 4. Hesperostipa comata 15 No UPL 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting 10. data in Remarks or on a separate sheet) 100 =Total Cover Problematic Hydrophytic Vegetation (Explain) Woody Vine Stratum (Plot size: 5 ) _ lIndicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 0 Present? Yes No X Remarks: Upland point adjacent to Wesetern Mutual Ditch within agricultural land. EN.G_EtJRNLE11.6S.r_UJ_D11R n atptains=V_ersiana 0 SOIL Sampling Point: AR - A17U Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-6 7.5YR 4/3 100 Sandy Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Compaction Hydric Soil Present? Yes No X Depth (inches): 6 Remarks: Compaction present from vehicle travel along the Western Mutual Ditch. No hydric soil indicators present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators present. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Landform (hillside, terrace, etc.): Western Mutual Ditch Subregion (LRR): LRR G, MLRA 67B Lat: 40.28619 °N Soil Map Unit Name: Ascalon loam, 0-1% slopes Sampling Date: 11/6/2023 State: CO Sampling Point: AR - A17W Section, Township, Range: 30, 4 North, 66 West Local relief (concave, convex, none): Concave Slope (%): 2 Long: -104.8195 °W Datum: NAD83 NWI classification: R4SBAx Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation Y , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Hydric Soil Present? Yes X No Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - A17U. Data point within the Western Mutual Ditch. The ditch is used primarily for irrigational purposes. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: (A) 3. Total Number of Dominant Species 4. Across All Strata: (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species x 1 = 5. FACW species x 2 = =Total Cover FAC species x 3 = Herb Stratum (Plot size: 5 ) FACU species x 4 = 1. UPL species x 5 = 2. Column Totals: (A) (B) 3. Prevalence Index = B/A = 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting 10. data in Remarks or on a separate sheet) =Total Cover Problematic Hydrophytic Vegetation (Explain) Woody Vine Stratum (Plot size: 5 ) _ lIndicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 100 Present? Yes No Remarks: Vegetation has been stripped from irrigational flows. No vegetation is present within the ditch. An OHWM is apparent throughout the ditch. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: AR - A17W Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-5 7.5YR 3/2 100 5-11 10YR 4/3 40 10YR 5/8 60 CS M Sandy Sandy redox present from 5" 11-18 10YR 5/4 15 5YR 4/6 85 CS M Sandy Sandy redox present Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) X Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _ Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) _ Depleted Below Dark Surface (A11) _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _ Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S6 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) High Water Table (A2) Invertebrates (B13) X Sparsely Vegetated Concave Surface (B8) _ _Aquatic (A3) Sulfide Odor (C1) X Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) X Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _Hydrogen X Water Marks (B1) -Season Water Table (C2) _Dry _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots X Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Data point within the Western Mutual Ditch. The ditch exhibits primary indicators B1 and B3. Additionally, secondary indicators B8, B10 and D2. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Engineering City/County: Gilcresh / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - A24U Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28963 °N Soil Map Unit Name: Julesburg sandy loam, 0-1% slopes Slope (%): 0 Long: -104.8114 °W Datum: NAD83 NWI classification: NA Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR-A24W. Data point situated above the Western Mutual Ditch in uplands. Project area is frequently tilled/plowed for agricuture. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 3 (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 30 x 4 = 120 1. Poa fendleriana 25 Yes UPL UPL species 65 x 5 = 325 2. Bothriochloa ischaemum 20 Yes UPL Column Totals: 95 (A) 445 (B) 3. Tribulus terrestris 20 Yes UPL Prevalence Index = B/A = 4.68 4. Bassia scoparia 15 No FACU 5. Salsola kali 15 No FACU Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting 10. data in Remarks or on a separate sheet) 95 =Total Cover Problematic Hydrophytic Vegetation (Explain) Woody Vine Stratum (Plot size: 5 ) _ lIndicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 5 Present? Yes No X Remarks: Upland point adjacent to Wesetern Mutual Ditch within agricultural land. EN.G_EtJRNLE11.6S.r_UJ_D11R n atptains=V_ersiana 0 SOIL Sampling Point: AR - A24U Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-6 7.5YR 4/3 100 Sandy 6-12 10YR 4/3 100 Sandy 12-21 10YR 4/1 100 Sandy Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators present. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Landform (hillside, terrace, etc.): Western Mutual Ditch Subregion (LRR): LRR G, MLRA 67B Lat: 40.28968 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Sampling Date: 11/6/2023 State: CO Sampling Point: AR - A24W Section, Township, Range: 30, 4 North, 66 West Local relief (concave, convex, none): Concave Slope (%): 2 Long: -104.8113 °W Datum: NAD83 NWI classification: R4SBAx Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation Y , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes X No Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - A24U. Data point within the Western Mutual Ditch. The ditch is used primarily for irrigational purposes. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: (A) 3. Total Number of Dominant Species 4. Across All Strata: (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species x 1 = 5. FACW species x 2 = =Total Cover FAC species x 3 = Herb Stratum (Plot size: 5 ) FACU species x 4 = 1. UPL species x 5 = 2. Column Totals: (A) (B) 3. Prevalence Index = B/A = 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting 10. data in Remarks or on a separate sheet) =Total Cover Problematic Hydrophytic Vegetation (Explain) Woody Vine Stratum (Plot size: 5 ) _ lIndicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 100 Present? Yes No X Remarks: Vegetation has been stripped from irrigational flows. No vegetation is present within the ditch. An OHWM is apparent throughout the ditch. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: AR - A24W Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-3 7.5YR 3/2 100 3-8 10YR 4/3 70 10YR 5/8 30 CS M Sandy Sandy redox present from 5" 8-18 10YR 5/4 70 5YR 4/6 30 CS M Sandy Sandy redox present Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) X Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _ Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) _ Depleted Below Dark Surface (A11) _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _ Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S6 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) High Water Table (A2) Invertebrates (B13) X Sparsely Vegetated Concave Surface (B8) _ _Aquatic (A3) Sulfide Odor (C1) X Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) X Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _Hydrogen X Water Marks (B1) -Season Water Table (C2) _Dry _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots X Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Data point within the Western Mutual Ditch. The ditch exhibits primary indicators B1 and B3. Additionally, secondary indicators B8, B10 and D2. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - B1 U Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural Field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28751 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Long: -104.8143 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR - B1 W. Data point adjacent to irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 2 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACU FAC species 10 x 3 = 30 25 FACU species 50 x 4 = 200 1. Bassia scoparia UPL species 10 x 5 = 50 2. Salsola kali 15 Yes FACU Column Totals: 70 (A) 280 (B) 3. Bouteloua dactyloides 10 No FACU Prevalence Index = B/A = 4.00 4. Agropyron cristatum 10 No UPL 5. Rumex crispus 10 No FAC Hydrophytic Vegetation Indicators: _ 1 - Rapid Test for Hydrophytic Vegetation _ 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation (Explain) lIndicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 6. 7. 8. 9. 10. Woody Vine Stratum (Plot size: ) 70 =Total Cover 1. 2' Hydrophytic Vegetation Present? Yes No X % Bare Ground in Herb Stratum 30 =Total Cover Remarks: Data point above irrigation pond. EN.G_EtJRNLE11.6S.r_UJ_D11R n atptains=V_ersiana 0 SOIL Sampling Point: AR - B1 U Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-6 7.5YR 4/3 100 Sandy Gravelly sand Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Compaction Hydric Soil Present? Yes No X Depth (inches): 6 Remarks: Compaction from vehicle traffic. No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Landform (hillside, terrace, etc.): Irrigation Pond Subregion (LRR): LRR G, MLRA 67B Lat: 40.28757 °N Soil Map Unit Name: Juleburg sandy loam 0-1% slopes Sampling Date: 11/6/2023 State: CO Sampling Point: AR - B1 W Section, Township, Range: 30, 4 North, 66 West Local relief (concave, convex, none): Concave Slope (%): 3 Long: -104.8142 °W Datum: NAD83 NWI classification: PABFx Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Hydric Soil Present? Yes X No Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - B1 U. Data point within an irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 1 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 1 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 20 x 2 = 40 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACW FAC species 0 x 3 = 0 20 FACU species 0 x 4 = 0 1. Polygonum pensylvanicum UPL species 0 x 5 = 0 2. Column Totals: 20 (A) 40 (B) 3. Prevalence Index = B/A = 2.00 4. 5. Hydrophytic Vegetation Indicators: _ 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% X 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation (Explain) lIndicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 6. 7. 8. 9. 10. Woody Vine Stratum (Plot size: 5 ) 20 =Total Cover 1. 2' Hydrophytic Vegetation Present? Yes X No % Bare Ground in Herb Stratum 80 =Total Cover Remarks: Data point within an irrigation pond. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: AR - B1 W Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-7 7.5YR 5/4 100 Sandy 7-18 7.5YR 5/4 50 10YR 5/8 50 CS M Sandy 18-21 10YR 3/1 70 10YR 5/8 30 CS M Sandy Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) X Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S5 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) X Surface Water (A1) _Salt Crust (B11) _Surface Soil Cracks (B6) High Water Table (A2) Invertebrates (B13) X Sparsely Vegetated Concave Surface (B8) _ _Aquatic X Saturation (A3) Hydrogen Sulfide Odor (C1) _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) X Geomorphic Position (D2) X FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _ X Water Marks (B1) -Season Water Table (C2) _Dry _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes X No Depth (inches): 2 Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes X No Depth (inches): 12 (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Surface water present with the pond. Pond showing signs of drying up after the growing season. Primary indicators A1, A3 and B1 present. Additionally, secondary indicators include B8, D2 and D5. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - C1 U Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural Field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28786 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Long: -104.8143 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR - C1 W. Data point adjacent to irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 2 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACU FAC species 10 x 3 = 30 25 FACU species 50 x 4 = 200 1. Bassia scoparia UPL species 10 x 5 = 50 2. Salsola kali 15 Yes FACU Column Totals: 70 (A) 280 (B) 3. Bouteloua dactyloides 10 No FACU Prevalence Index = B/A = 4.00 4. Agropyron cristatum 10 No UPL 5. Rumex crispus 10 No FAC Hydrophytic Vegetation Indicators: _ 1 - Rapid Test for Hydrophytic Vegetation _ 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation (Explain) lIndicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 6. 7. 8. 9. 10. Woody Vine Stratum (Plot size: ) 70 =Total Cover 1. 2' Hydrophytic Vegetation Present? Yes No X % Bare Ground in Herb Stratum 30 =Total Cover Remarks: Data point above irrigation pond. EN.G_EtJRNLE11.6S.r_UJ_D11R n atptains=V_ersiana 0 SOIL Sampling Point: AR - C1 U Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-6 7.5YR 4/3 100 Sandy Gravelly sand Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Compaction Hydric Soil Present? Yes No X Depth (inches): 6 Remarks: Compaction from vehicle traffic. No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Landform (hillside, terrace, etc.): Irrigation Pond Subregion (LRR): LRR G, MLRA 67B Lat: 40.28786 °N Soil Map Unit Name: Juleburg sandy loam 0-1% slopes Sampling Date: 11/6/2023 State: CO Sampling Point: AR - C1 W Section, Township, Range: 30, 4 North, 66 West Local relief (concave, convex, none): Concave Slope (%): 3 Long: -104.8142 °W Datum: NAD83 NWI classification: PABFx Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Hydric Soil Present? Yes X No Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - C1 U. Data point within an irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 1 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 1 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 20 x 2 = 40 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACW FAC species 0 x 3 = 0 20 FACU species 0 x 4 = 0 1. Polygonum pensylvanicum UPL species 0 x 5 = 0 2. Column Totals: 20 (A) 40 (B) 3. Prevalence Index = B/A = 2.00 4. 5. Hydrophytic Vegetation Indicators: _ 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% X 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation (Explain) lIndicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 6. 7. 8. 9. 10. Woody Vine Stratum (Plot size: 5 ) 20 =Total Cover 1. 2' Hydrophytic Vegetation Present? Yes X No % Bare Ground in Herb Stratum 80 =Total Cover Remarks: Data point within an irrigation pond. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: AR - C1 W Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-7 7.5YR 5/4 100 Sandy 7-18 7.5YR 5/4 50 10YR 5/8 50 CS M Sandy 18-21 10YR 3/1 70 10YR 5/8 30 CS M Sandy Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) X Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S5 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) X Surface Water (A1) _Salt Crust (B11) _Surface Soil Cracks (B6) High Water Table (A2) Invertebrates (B13) X Sparsely Vegetated Concave Surface (B8) _ _Aquatic X Saturation (A3) Hydrogen Sulfide Odor (C1) _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) X Geomorphic Position (D2) X FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _ X Water Marks (B1) -Season Water Table (C2) _Dry _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes X No Depth (inches): 2 Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes X No Depth (inches): 12 (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Surface water present with the pond. Pond showing signs of drying up after the growing season. Primary indicators A1, A3 and B1 present. Additionally, secondary indicators include B8, D2 and D5. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP1 Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28833 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Long: -104.8125 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the northeast corner of the property. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 1 (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 0 x 4 = 0 1. Zea mays 50 Yes UPL UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) 10. 50 =Total Cover _ Problematic Hydrophytic Vegetation (Explain) lIndicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 5 ) 1. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 50 Present? Yes No X Remarks: Data point in corn field. Field has been recently harvested. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: UP1 Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-18 10YR 4/3 100 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _ Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) _ Depleted Below Dark Surface (A11) _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _ Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP2 Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28395 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Long: -104.8142 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the southeast corner of the property. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 1 (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 0 x 4 = 0 1. Zea mays 50 Yes UPL UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) 10. 50 =Total Cover _ Problematic Hydrophytic Vegetation (Explain) lIndicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 5 ) 1. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 50 Present? Yes No X Remarks: Data point in corn field. Field has been recently harvested. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: UP2 Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-18 10YR 4/3 100 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _ Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) _ Depleted Below Dark Surface (A11) _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _ Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP3 Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28551 °N Soil Map Unit Name: Ascalon loam, 0-1% slopes Slope (%): 0 Long: -104.8195 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the southwest corner of the property. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 1 (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 0 x 4 = 0 1. Zea mays 50 Yes UPL UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) 10. 50 =Total Cover _ Problematic Hydrophytic Vegetation (Explain) lIndicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Woody Vine Stratum (Plot size: 5 ) 1. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 50 Present? Yes No X Remarks: Data point in corn field. Field has been recently harvested. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: UP3 Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-18 10YR 4/3 100 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP4 Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28757 °N Soil Map Unit Name: Olney fine sandy loam, 0-1% slopes Slope (%): 0 Long: -104.817 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the northwest corner of the property. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 1 (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 0 x 4 = 0 1. Triticum aestivum 50 Yes UPL UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. 4 - Morphological Adaptations (Provide supporting 10. data in Remarks or on a separate sheet) 50 =Total Cover Problematic Hydrophytic Vegetation (Explain) Woody Vine Stratum (Plot size: 5 ) _ lIndicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2' Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 50 Present? Yes No X Remarks: Data point in winter wheat field. Field has been recently harvested. EN.G_EtJRNL611.6S.r_UJ_D IR n atptains=V_ersiana 0 SOIL Sampling Point: UP4 Profile Description: (Describe to the depth needed to document the indicator or confirm Depth Matrix Redox Features the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Typel Loc2 0-18 10YR 4/3 100 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) _ Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) _ Sandy Redox (S5) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) _ Loamy Gleyed Matrix (F2) _ Depleted Matrix (F3) _Redox Dark Surface (F6) Depleted Dark Surface (F7) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) _ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) _Red Parent Material (F21) Very Shallow Dark Surface (F22) _ _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) _ (F16) 3lndicators of hydrophytic vegetation and H) wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water(A1) _Salt Crust (B11) _Surface Soil Cracks (B6) Water Table (A2) Invertebrates (B13) Vegetated Concave Surface (B8) _High _Aquatic (A3) Hydrogen Sulfide Odor (C1) _Sparsely _Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) _Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _Saturation _ Marks (B1) Dry -Season Water Table (C2) _Water _ _Sediment Deposits (B2) _Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Mat or Crust (B4) of Reduced Iron (C4) _Algal _Presence _ Iron Deposits (B5) _Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. EALG_F0.B.11L6i 1 a -s W.1 2n1 R rmatpl2.iup — Niaccla .0 EXHIBIT K Climate Climate information was available for the Greeley, CO (UNC) weather station from the Western Regional Climate Center. The climate data collected from 1967 through 2023 indicates the average total annual precipitation at the site to be approximately 14.26 inches per year. Monthly average temperature and precipitation data for the 56 -year period of record are provided in the following table: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Average Max. Temperature (F) 42.29 46.91 57.04 65.05 73.57 84.85 90.5 88.33 80.61 67.09 52.4 42.34 65.88 Average Min. Temperature (F) 16.05 19.44 27.14 34.80 44.17 53.31 58.77 56.61 47.75 35.89 25.08 16.74 36.35 Average Total Precipitation (in.) 0.47 0.43 1.04 1.75 2.71 1.84 1.52 1.33 1.10 1.01 0.72 0.52 14.26 Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT L Reclamation Cost A phased and cumulative bonding approach is proposed for the Sweet Valley Pit mining site operation. The financial warranty required for each phase is the warranty required to completely reclaim that phase. Direct costs related to the construction of the reclamation components that have been included in the financial warranty calculations include: Scarifying disturbed ground surfaces, re -applying topsoil over disturbed areas, revegetating disturbed areas, dewatering the full pit, slurry wall liner construction, and contractor mobilization. The slurry wall liner construction costs have been broken down further to include costs for different depths to bedrock as provided from the DRMS on previous 112 applications. Overhead, profit, and project management costs were then calculated and added to the direct construction costs to arrive at the required financial warranty for each phase. As each new phase is started, the financial warranty for that phase will be posted with the Division. When a phase has been reclaimed, inspected, and accepted by the Division, the associated financial warranty for that phase can then be reduced/released to 20`)/0 of the financial warranty required for that phase. Please see the attached calculations for details of the costs and quantities used to determine the financial warranty required for each phase of mining. The following table summarizes the financial warranty required for each phase, and the cumulative financial warranty that will be provided during any given phase. Reclamation Cost Summary Phase Additional Financial Warranty Required Cumulative Financial Warranty 1a $323,752 $323,752 1 $1,700,563 $2,024,315 2a $189,481 $2,213,796 2 $2,030,014 $4,243,810 Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application JET Consulting, Inc. Reclamation Bond Quantities and Costs ©2024 la Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit 3/22/2024 23038 Sweet Valley Pit Rec Bond Calcs Summary of Unit Costs Direct costs Re -applying topsoil 12" thick Revegetating disturbed area Dewatering full pit Phase 1 Slurry Wall Cost (0-50 ft @ $4/ft - 51-70 ft @ $7/ft - 71-95 ft @ $13/ft) Scarifying Ground Mobilization Overhead and Profit Costs Liability insurance Performance bond Profit Project Management Engineering and bidding Management and administration Total Overhead Cost Total Additional Cost $1,800.00 $1,000.00 $400.00 $291.00 / acre / acre / million gallons / linear foot $200 / acre $2,500 lump sum 1.55°/0 of direct cost 1.05°/0 of direct cost 10.00°/0 of direct cost 12.60°/0 of direct cost 4.25°/0 of direct cost 5.00°/0 of direct cost 9.25°/0 of direct cost JET Consulting, Inc. Reclamation Bond Quantities and Costs ©2024 J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit 3/22/2024 23038 Sweet Valley Pit Rec Bond Calcs Phase la - 83.56 acres (Prior to Exposing Groundwater) Reclamation Operation Scarifying - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale, and Disturbed Area Topsoil Placement - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale, and Disturbed Area Revegetate - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale, and Disturbed Area Removal of foundations for Scale House and Scale Mobilization Quantity Unit Unit Cost Cost 83.56 83.56 83.56 50 1.0 ac ac ac cy Is $ 200 $ 1,800 $ 1,000 $ 200.00 $ 2,500 $ 16,712 $ 150,408 $ 83,560 $ 10,000 $ 2,500 $ 263,180 $ 263,180 $ 33,161 $ 296,341 Subtotal Direct Cost Total Direct Cost Overhead and Profit Cost (12.60%) Contract Cost Project Management (9.25°/0) $ 27,412 Total Required Financial Warranty For Phase 1a $ 323,752 Phase 1 - 83.56 acres Reclamation Operation Slurry Wall for Phase 1 Dewatering of Pit for Phase 1 Credit for Water Surface - Scarifying - Disturbed Area Credit Water Surface - Topsoil Placement - Disturbed Area Credit Water Surface - Revegetate - Disturbed Area Mobilization Quantity Unit Unit Cost Cost 4,586 355 (32.23) (32.23) (32.23) 1.0 If mg ac ac ac Is $ 291.00 $ 400 $ 200 $ 1,800 $ 1,000 $ 2,500 $ 1,334,526 $ 142,061 $ (6,446) $ (58,014) $ (32,230) $ 2,500 Subtotal Direct Cost $ 1,382,397 Total Direct Cost $ 1,382,397 Overhead and Profit Cost (12.60%) $ 174,182 Contract Cost $ 1,556,579 Project Management (9.25°/0) $ 143,984 Additional Financial Warranty Required For Phase 1 Cummulative Financial Warranty Required For Phase 1a-1 $ 1,700,563 $ 2,024,315 JET Consulting, Inc. Reclamation Bond Quantities and Costs ©2024 J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit 3/22/2024 23038 Sweet Valley Pit Rec Bond Calcs Phase 2a - 50.51 acres (Prior to Exposing Groundwater) Reclamation Operation Scarifying - Disturbed Area Topsoil Placement - Disturbed Area Revegetate - Disturbed Area Mobilization Quantity Unit Unit Cost Cost 50.51 50.51 50.51 1.0 ac ac ac Is 200 1,800 1,000 2,500 $ 10,102 $ 90,918 $ 50,510 $ 2,500 $ 154,030 $ 154,030 $ 19,408 $ 173,438 Subtotal Direct Cost Total Direct Cost Overhead and Profit Cost (12.60%) Contract Cost Project Management (9.25°/0) $ 16,043 Total Required Financial Warranty For Phase 2a Cummulative Financial Warranty Required For Phase 1a -2a $ 189,481 $ 2,213,796 Phase 2 - 50.51 acres Reclamation Operation Slurry Wall for Phase 2 Removal of Soil from Sediment Ponds and Removal of Berms for Sediment Ponds Dewatering of Pit for Phase 2 Credit for Water Surface - Scarifying - Disturbed Area Credit Water Surface - Topsoil Placement - Disturbed Area Credit Water Surface - Revegetate - Disturbed Area Mobilization Quantity Unit Unit Cost Cost 5,254 16,000 518 (40.10) (40.10) (40.10) 1.0 If cy mg ac ac ac Is $ 291.00 $ 2.00 $ 400 $ 200 $ 1,800 $ 1,000 $ 2,500 $ 1,528,914 $ 32,000 $ 207,096 $ (8,020) $ (72,180) $ (40,100) $ 2,500 Subtotal Direct Cost $ 1,650,210 Total Direct Cost $ 1,650,210 Overhead and Profit Cost (12.60%) $ 207,926 Contract Cost $ 1,858,137 Project Management (9.25°/0) $ 171,878 Additional Financial Warranty Required For Phase 2 Cummulative Financial Warranty Required For Phase 1a-2 $ 2,030,014 $ 4,243,810 EXHIBIT M Other Permits and Licenses CCWCD will apply for and obtain the following permits and/or notices prior to commencement of any mining or mining -related activities that would require the permit or notice to be obtained at the Sweet Valley Pit mining site: Colorado Office of the State Engineer ■ Well Permit (Prior to exposing groundwater) ■ Substitute Water Supply Plan (Prior to exposing groundwater) ■ Leak Test Approval for Slurry Wall Liner(s) (after construction of slurry wall(s)) Colorado Department of Public Health and Environment ■ Air Pollution Emission Notice ■ Colorado Discharge Permit System Weld County ■ Use By Special Review Permit Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT N Source of Legal Right to Enter See attached deed. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application 4699194 03/30/2021 03:44 PM Total Pages 2 Rec Fee: $18.00 Doc Fee: $120,00 Carly Koppes - Clerk and,Recorder, Weld County,.; CO PERSONAL kr RESEN TATIVE'S DEED THIS DEED made by T. Scott Meining, as Personal Representative.cif'the. Estate of Donald R. Meining. also known as Donald Richard. Meining, also known as Donald Meining, a}so known as Don Meining, Deceased, Grantor; to Central Colorado Water Conservancy ‘1)istrict. a Quasi-Murrlctpal Corporation. as Erratitecs. whose address i5- X209 W 2$' Street.. Greeley, CO 80634.' \14/11ER AS, the decedent died on the date of nipne 25, 2020. leafing a Will dated April 29, 2015. and the Grantor was duly appointed Personal Representative of said Estate by the District Court in and for the County of Feld and State of Colorado. Probate No. 2020PR30429, on the date of August 20. 2020, and is now qualified and acting in said capacity:. NOW . THIaREFORE. pursuant :tO.' the powers conferred:upon Grantor by the Colorado Probate, .Code, Granter does her.eby yell and convey unto Grantees, for and its,. consideration of OuR l;-lCNDRED THOUSAND A141) NO/100 04,800,00If.•flti) Doi.l.A.ks (with such consideration being allocated $1.200‘,000.00 to real propet`ty> and $3.600.(300:0-0 to the Water Rights.deseribed below) the following described real property situate in the Ci:aunty of Weld, State of Colorado. free and clear of all liens and encumbrances except the lien .for non -delinquent genera) _property taxes for 2021.diie in 2022 : LOTS A.A.ND C. RECORDED EXEMPTION NO. 1057 -30 -1 -.RE: .j144, RECORDED JUNE 14, 2.002 AT I.ECEP ION NO. 296 E3.72, •l3EING PART OF THE hUItQUARTER ()1 SECTION 30, TC}ITT SF 11P 4 NORTH, RANGE fib WEST OF I'HE,.6TI I PRINCIPAL ". DI AN, COUNTY {)F'1'VELD, STATE. OF COLORADO EXCEPT THAT PORTION DF.SC1 IBED IN DEED RECORDED JANUARY 7,1 94i IN ROOK 1072 .1'l PACitl 567. TOCiETIIER all rights, easements, and bencfits:appurtenant thereto. and I'OGLIIIL'lt WFITI. the following Water ti +his_ free and clear of. KIf liens and encumbrances:...... A. Irrigation Wells .as identified below and the.'4l'AS glass D lni}ation Contract, Contract. No. 912 and all permits, decrees_ materials,.. easements, pumps and equipment appurtenant thereto: Irri_gatim Vy'ell_s. WDIIl 0202250 W1i117 02D7251 Permit No. . 13659 1.3660 Case No. W-1802 W-1802 4699194 03/30/2021 03:44 PNl Page 2 of 2 . 'I he following Water 'Shares, together with all 'ditch, ditch rights. laterals, easements, headgate.s, equipment and ether appurtenances identified as follows: ' Cotnpany I'armprs .fndcpendcnt I)itelr.C'urnpany Certificate No, 1147 Western \lutual „76.] Ditch Company No. of Shares ?3 BUT E XCFPTING AND RESERVING to Grantor, its successors and assigns, all of -Grantor's right, title and interest in all oil, gas, and other minerals, not to inchide sand and gravel, vw'ith respect.ti} the Real Property described above, but without right.of surface entry or use of the Siifac:e and subsurface of su4li Real Property to a depth of 7[10 from the surface of the 'Real Property together ,With the right to grant lenses of Grantor's reserved ritilttS provided such lessee: waives the use of the surface Uf.stich Kcal Property to a depth of 500 feet of the surface.. Executed this .. ` day of March. 2021. STATE OF CC)[.ORAI O Ss. COUNTY O W 1-1.1) Estate of Donald R. MeittiliC also known as D6nald Richard iVleinin k.() known as ' 'Donald Meining, also known as 1)on Duce`4sed i-. Scott Meining, Personal Representative r 1N• The foregoing instrument was acknowledged before the this " ,,r . day of March, 2011, by T. Scott Meining,•a.,q Personal Representative of the Estate of Donald R. Mcining, also lfinowwn as Donald Richard Meining, also knc≥'wt3 as Donald Meining,,, also known as Don Meining, Deceased. , . 1 1 comrnission expires: Witness my hand and n-fficial seal. ANGELA C GARDNER NCTAR PUBLIC "ATE QF COLORADO NOTARY.lC? 19894014589 MY LiOn,1i ilnian Expires May 21, 2023 -1\h tary 1'uhlic EXHIBIT O Owner of Record of Affected Land (Surface Area) and Owner of Substance to be Mined Central Colorado Water Conservancy District 3209 W. 28th Street Greeley, CO 80634 Deed is attached. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application 4699194 03/30/2021 03:44 PM Total Pages 2 Rec Fee: $18.00 Doc Fee: $120,00 Carly Koppes - Clerk and,Recorder, Weld County,.; CO PERSONAL kr RESEN TATIVE'S DEED THIS DEED made by T. Scott Meining, as Personal Representative.cif'the. Estate of Donald R. Meining. also known as Donald Richard. Meining, also known as Donald Meining, a}so known as Don Meining, Deceased, Grantor; to Central Colorado Water Conservancy ‘1)istrict. a Quasi-Murrlctpal Corporation. as Erratitecs. whose address i5- X209 W 2$' Street.. Greeley, CO 80634.' \14/11ER AS, the decedent died on the date of nipne 25, 2020. leafing a Will dated April 29, 2015. and the Grantor was duly appointed Personal Representative of said Estate by the District Court in and for the County of Feld and State of Colorado. Probate No. 2020PR30429, on the date of August 20. 2020, and is now qualified and acting in said capacity:. NOW . THIaREFORE. pursuant :tO.' the powers conferred:upon Grantor by the Colorado Probate, .Code, Granter does her.eby yell and convey unto Grantees, for and its,. consideration of OuR l;-lCNDRED THOUSAND A141) NO/100 04,800,00If.•flti) Doi.l.A.ks (with such consideration being allocated $1.200‘,000.00 to real propet`ty> and $3.600.(300:0-0 to the Water Rights.deseribed below) the following described real property situate in the Ci:aunty of Weld, State of Colorado. free and clear of all liens and encumbrances except the lien .for non -delinquent genera) _property taxes for 2021.diie in 2022 : LOTS A.A.ND C. RECORDED EXEMPTION NO. 1057 -30 -1 -.RE: .j144, RECORDED JUNE 14, 2.002 AT I.ECEP ION NO. 296 E3.72, •l3EING PART OF THE hUItQUARTER ()1 SECTION 30, TC}ITT SF 11P 4 NORTH, RANGE fib WEST OF I'HE,.6TI I PRINCIPAL ". DI AN, COUNTY {)F'1'VELD, STATE. OF COLORADO EXCEPT THAT PORTION DF.SC1 IBED IN DEED RECORDED JANUARY 7,1 94i IN ROOK 1072 .1'l PACitl 567. TOCiETIIER all rights, easements, and bencfits:appurtenant thereto. and I'OGLIIIL'lt WFITI. the following Water ti +his_ free and clear of. KIf liens and encumbrances:...... A. Irrigation Wells .as identified below and the.'4l'AS glass D lni}ation Contract, Contract. No. 912 and all permits, decrees_ materials,.. easements, pumps and equipment appurtenant thereto: Irri_gatim Vy'ell_s. WDIIl 0202250 W1i117 02D7251 Permit No. . 13659 1.3660 Case No. W-1802 W-1802 4699194 03/30/2021 03:44 PNl Page 2 of 2 . 'I he following Water 'Shares, together with all 'ditch, ditch rights. laterals, easements, headgate.s, equipment and ether appurtenances identified as follows: ' Cotnpany I'armprs .fndcpendcnt I)itelr.C'urnpany Certificate No, 1147 Western \lutual „76.] Ditch Company No. of Shares ?3 BUT E XCFPTING AND RESERVING to Grantor, its successors and assigns, all of -Grantor's right, title and interest in all oil, gas, and other minerals, not to inchide sand and gravel, vw'ith respect.ti} the Real Property described above, but without right.of surface entry or use of the Siifac:e and subsurface of su4li Real Property to a depth of 7[10 from the surface of the 'Real Property together ,With the right to grant lenses of Grantor's reserved ritilttS provided such lessee: waives the use of the surface Uf.stich Kcal Property to a depth of 500 feet of the surface.. Executed this .. ` day of March. 2021. STATE OF CC)[.ORAI O Ss. COUNTY O W 1-1.1) Estate of Donald R. MeittiliC also known as D6nald Richard iVleinin k.() known as ' 'Donald Meining, also known as 1)on Duce`4sed i-. Scott Meining, Personal Representative r 1N• The foregoing instrument was acknowledged before the this " ,,r . day of March, 2011, by T. Scott Meining,•a.,q Personal Representative of the Estate of Donald R. Mcining, also lfinowwn as Donald Richard Meining, also knc≥'wt3 as Donald Meining,,, also known as Don Meining, Deceased. , . 1 1 comrnission expires: Witness my hand and n-fficial seal. ANGELA C GARDNER NCTAR PUBLIC "ATE QF COLORADO NOTARY.lC? 19894014589 MY LiOn,1i ilnian Expires May 21, 2023 -1\h tary 1'uhlic EXHIBIT P Municipalities within Two Miles Town of Gilcrest 304 8t" Street Gilcrest, Colorado 80623 Town of Milliken 1101 Broad Street P.O. Box 290 Milliken, Colorado 80543 Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT Q Proof of Mailing Notices to County Commissioners and Soil Conservation District See attached. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application NOTICE OF FILING APPLICATION FOR COLORADO MINED LAND RECLAMATION PERMIT FOR REGULAR alariloNSTRUCTION MATERIALS EXTRACTION OPERATION NOTICE TO THE BOARD OF COUNTY COMMISSIONERS Weld COUNTY Central Colorado Water Conservancy District (the "Applicant/Operator") has applied for a Regular (112) reclamation permit from the Colorado Mined Land Reclamation Board (the "Board") to conduct the extraction of construction materials operations in Weld _ County. The attached information is being provided to notify you of the location and nature ofthe proposed operation. The entire application is on file with the Division of Reclamation, Mining, and Safety (the "Division") and the local county clerk and recorder. The applicant/operator proposes to reclaim the affected land to Developed water Resource use. Pursuant to Section 34-32.5-1 16(4)(m), C.R.S., the Board may confer with the local Board ofCounty Commissioners before approving of the post -mining land use. Accordingly, the Board would appreciate your comments on the proposed operation. Please note that, in order to preserve your right to a hearing before the Board on this application, you must submit written comments on the application within twenty (20) days of the date of last publication of notice pursuant to Section 34-32.5-112(10), CRS. If you would like to discuss the proposed post -mining land use, or any other issue regarding this application, please contact the Division of Reclamation, Mining, and Safety, 1313 Sherman Street, Room 215, Denver, Colorado 80203, (303) 866-3567. NOTE TO APPLICANT/OPERATOR: You must attach a copy of the application form to this notice. If this is a notice of a change to a previously filed application you must either attach a copy of the changes, or attach a complete and accurate description of the change. RECEIVED APR 0 3 1014 WELD COUNTY COMMISSIONERS NOTICE OF FILING APPLICATION FOR COLORADO MINED LAND RECLAMATION PERMIT FOR REGULAR (112) CONSTRUCTION MATERIALS EXTRACTION OPERATION NOTICE TO THE BOARD OF SUPERVISORS OF THE LOCAL CONSERVATION DISTRICT tdAiw1tPrl DISTRICT Central Colorado Water Conservancy District (the "Applicant/Operator") has applied for a Regular (112) reclamation permit from the Colorado Mined Land Reclamation Board (the "Board") to conduct the extraction of construction materials operations in Weld _ County. The attached information is being provided to notify you of the location and nature of the proposed operation. The entire application is on file with the Division of Reclamation, Mining, and Safety (the "Division") and the local county clerk and recorder. The applicant/operator proposes to reclaim the affected land to Developed Water Resource _ use. Pursuant to Section 34-32.5-116(4)(m), C.R.S., the Board may confer with the local Conservation Districts before approving of the post -mining land use. Accordingly, the Board would appreciate your comments on the proposed operation. Please note that, in order to preserve your right to a hearing before the Board on this application, you must submit written comments on the application within twenty (20) days of the date of last publication of notice pursuant to Section 34-32.5-112(10), C.R.S. If you would like to discuss the proposed post -mining land use, or any other issue regarding this application, please contact the Division of Reclamation, Mining, and Safety, 1313 Sherman Street, Room 215, Denver, Colorado 80203, (303) 866-3567. NOTE TO APPLICANT/OPERATOR: You must attach a copy of the application form to this notice. If this is anotice of a change to a previously filed application you must either attach a copy of the changes, or attach a complete and accurate description of the change. J ) d inflOY0 I 1W/cik � � EXHIBIT R Proof of Filing with County Clerk or Recorder See attached. Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application STATE OF COLORADO DIVISION OF RECLAMATION, MINING AND SAFETY Department of Natural Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 Phone: (303) 866-3567 FAX: (303) 832-8106 RECEIVED APR 0 3 1011t WELD COUNTY COMMISSIONERS CONSTRUCTION MATERIALS REGULAR (112) OPERATION RECLAMATION PERMIT APPLICATION FORM CHECK ONE: EL._ There is a File Number Already Assigned to this Operation Permit # M - OM 1I COLORADO DIVISION OF RECLAMATION MINING SAFETY (Please reference the file number currently assigned to this operation) New Application (Rule 1.4.5) EU_ Amendment Application (Rule 1.10) Di_ Conversion Application (Rule 1.11) Permit # M - (provide for Amendments and Conversions of existing permits) The application for a Construction Materials Regular 112 Operation Reclamation Permit contains three major parts: (1) the application form; (2) Exhibits A4S, Addendum 1, any sections ofExhibit 6.5 (Geotechnical Stability Exhibit; and (3) the application fee. When you submit your application, be sure to include one (I) complete si ed and notarized ORIGINAL and one (1) copy of the completed application form, two (2) copies ofExhibits A•S, Addendum 1, appropriate sections of 6.5 (Geotechnical Stability Exhibit, and a check for the application fee described under Section (4) below. Exhibits should NOT be bound or in a 3 -ring binder, maps should be folded to 8 1/2" X 11" or 8 1/2" X 14" size. To expedite processing, please provide the information in the format and order described in this form. GENERAL, OPERATION INFORMATION Type or print clearly, in the space provided, ALL information requested below. 1. A licantio rator or coin an name name to be used on ennit : Central Colorado Water Conservancy District 1.1 Type of organization (corporation, partnership, etc.): 2. eration name mine or site name 3. Permitted acres e new or existin site 3.1 Change in acreage (+) 3.2 Total acreage in Permit area 4. Fees: 4.1 4.2 4.4 4.5 Sweet Valley Pit New Application New Quarry Application Amendment Fee Conversion to 112 operation (set by statute) S• Prima commoditi : s to be mined: Sand 5.1 5.2 5.3 Incidental commodities) to be mined: 1. 3• bsiTonsi Gravel bs/Tonsi r 4. / Anticipated end use of primary cornmoditie(s) to be mined: _ 147.83 permitted acres acres acres $2,696.00 application fee 334.$.4.1.__12.00 quarry application X21229,00 amendment fee $2,696.00 conversion fee 2. _ / lbsiTons/�r lbsi ons.bff S. _ / lbsPTons/vr Construction Aggregates Anticipated end use of incidental commodities) to be mined: N/A EXHIBIT S Permanent Man -Made Structures within 200 Ft of the Affected Land 1. Power Lines/Poles 2. Phone Lines/Poles 3. Oil and Gas Lines 4. Fences/Structures 5. Buildings 6. County Roads and ROW 7. Irrigation Channels/Ditches/Pipelines 8. Water and Sewer Pipelines CCWCD believes that the mining operation, as proposed, will not adversely affect the permanent, man-made structures located within 200 feet of the east, west, north, and south side of the permit boundary. However, the applicant still anticipates providing evidence of agreements for compensation with the appropriate structure owners or an engineering evaluation (see attached slope stability report) that adequately demonstrates that the proposed mining and reclamation operations will not result in damage to the structures. There are abandoned PDC Energy, Inc. oil/gas mining limits and within the permit boundary. Energy, Inc. to develop a surface use agreement well and the oil/gas line. PDC Energy, Inc. is the mining. wells and an oil/gas lines located within the CCWCD is pursuing agreements with PDC as required to address removal of the oil/gas only oil/gas lessee that will be affected by the The list of structure owners and structures are as follows (please refer to the mining plan maps for the specific locations): Centurylink Phone and Fiber Optic Lines Xcel Energy Overhead Power Lines Central Weld County Water District Water Pipeline Town of Gilcrest Sanitary Sewer Pipeline Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application PDC Energy/Chevron Oil/Gas Wells (active and abandoned) Oil/Gas Pipelines Tank Batteries and Equipment Williams Gilcrest (Formerly Cureton Gilcrest Midstream) Gas Pipelines Western Midstream Gas Pipelines DCP Midstream/Phillips 66 Gas Pipelines Suncor Energy Oil/Gas Pipelines Weld County County Roads and ROW CDOT Hwy 60, ROW, and fence Western Mutal Ditch Company Irrigation Ditch, Structures HS Land & Cattle Irrigation Pipeline and Ditch, Structures, Fence Poncelow Family Living Trust Buildings, Structures, Fence CAW Equities, LLC Structures Brent and Fawn Graybill Fence, Building, Structures Brady and Lauren Sharp Fence, Building, Structures Terry and Janice Wiedeman Irrigation Ditch, Structures CTW Properties, LLC Irrigation Ditch, Structures Meining Cattle Co., LLC Structures Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Scott Meining (Donald Meining) Structures, Buildings Red Teirra Equities, LLC Structures, Irrigation Ditches Central Colorado Water Conservancy District (CCWCD) Structures, Irrigation Ditches, Buildings, Fence Wiliam and Kimberly Scott Irrigation Ditch, Structures, Fence, Building Patrick and Sheryl Maroney Irrigation Ditch/Pipeline, Structures, Fence, Building Chad and Kelly Doolittle Irrigation Ditch, Structures, Fence, Building Gerald and Teresa Moran, Sarah Drinkwine Irrigation Ditch, Structures, Building Ili1 J.s.f Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application SLOPE STABILITY REPORT FOR THE SWEET VALLEY PIT WELD COUNTY, COLORADO MARCH, 2024 PREPARED FOR: WHERE THE FUTURE FLOWS CENTRAL COLORADO WATER CONSERVANCY DISTRICT 3209 W. 28TH STREET GREELEY, CO 80634 (970) 330-4540 PREPARED BY: J&T Consulting, Inc. 305 DENVER AVENUE - SUITE D FORT LUPTON, CO 80621 PHONE: 303-857-6222 CERTIFICATION: I hereby certify this slope stability analysis for Central Colorado Water Conservancy District, the Sweet Valley Pit, located in Weld County, Colorado was prepared by me or under my direct supervision. James C. York Registered Professional Engineer State of Colorado No. 36846 litri JsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page Table of Contents I. Introduction II. Overview III. Geotechnical Data IV. Design Analysis and Criteria V. Methodology VI. Slope Stability Results VII. Conclusions and Recommendations Appendices Appendix A Slope Stability Case Location Map Appendix B Slope Stability Case Cross -Sections Appendix C Slope Stability Case Galena Output Appendix D Boring and Monitoring Well Logs Appendix E USGS Map, Oct. 2002 revision — "Peak Acceleration (%g) with a 2% Probability of Exceedance in 50 yrs" JsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page ii INTRODUCTION Central Colorado Water Conservancy District (CCWCD) proposes to mine the property located in the Northeast '/4 of Section 30, Township 4 North, Range 66 West of the 6t" Principal Meridian, in Weld County, Colorado. The property is bounded by Weld County Road 42 on the north, County Road 25.5 on the west, and private property to the east and south, and private property to the north and west. The Western Mutual Ditch runs west to east through the site. The proposed mining operation will extract gravel reserves from locations adjacent to man-made structures. The rules and regulations of the Division of Reclamation, Mining, and Safety (DRMS) require that any excavation within a 200 -foot setback of a man-made structure shows thorough engineering analysis that the proposed excavation will not cause damage to the structure. The accepted method of demonstrating this is through a slope stability analysis. This report contains an overview of the methodology used in the analysis of the excavated slopes and their estimated affects on all man-made structures. Recommendations regarding acceptable setbacks from man-made structures have also been included. OVERVIEW The DRMS mining plan proposes that the north cell and the south cell will be excavated at 3H:1 V slopes. Reclamation of the north and south cell will be done by leaving the mining slopes in place. The north cell will cover an estimated 32.23 surface acres when full. The south cell will cover an estimated 40.10 surface acres when full. The actual surface area will depend on the final configuration of the reservoir after reclamation is complete. GEOTECHNICAL DATA CMT Technical Services (CMT) contracted with Dakota Drilling to conduct subsurface drilling for the gravel investigation. Soil boring logs were provided by CMT for the locations of the soil borings. J&T Consulting, Inc. (JT) used estimated soil strength parameters provided by CMT that are based on the soil types found, CMT's professional opinion and other stability analyses that have been performed on gravel mining operations along the Front Range. Table 1 represents a summary of the soil strength parameters that were used in this stability analysis. litri JsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 1 Table 1 — Soil Properties Description Max dry density (pcf) Saturated Density (pcf) Cohesion (psf) Internal Friction Angle Overburden/Clay 100 115 50 25 Sand and Gravel 115 130 10 35 Stable Claystone Bedrock 120 135 3000 0 Stable Siltstone Bedrock 117 133 3000 0 Stable Sandstone Bedrock 115 128 3000 0 Slurry Wall 100 110 0 45 DESIGN ANALYSIS AND CRITERIA The proposed mining slopes were analyzed using Clover Technologies Galena Slope Stability Analysis System, version 7.2. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. For this project, eight cases were identified as critical during the mining operation. Static and pseudo -static conditions were analyzed for each case. Pseudo -static peak acceleration factors (peak horizontal acceleration, or PHA) were taken from USGS information for the western United States. The 2% probability of exceedance in 50 years (the most conservative) was used. A peak acceleration factor of 0.10 x gravity was taken from this data. A conservative earthquake loading coefficient of 0.50 x PHA is often used for slope stability analyses (50% of PHA). We used an even more conservative approach and used 70% of the PHA for this area for our earthquake loading coefficient. Hence, 0.70 x 0.10 = 0.07. All mining and reclamation side slopes will be 3H:1 V. The locations of the cases are shown on the case location map included in Appendix A. Case SS -1: Gas Line Easement, Gas Line, and County Road 42 Right -of -Way. The mining operation is adjacent to a gas line easement, a gas line, Weld County Road 42 right-of-way, and the edge of Weld County Road 42 (gravel road) on the north side of the north cell. The proposed setback for excavation is 39 feet from the gas line easement. The excavation depth is planned to be 55 feet in this area. Case SS -2: Gas Line Easement, Gas Line, Property Line/Fence and House. The mining operation is adjacent to a gas line easement, a gas line, a property line/fence and a house on the east side of the north cell. The proposed setback for excavation is 47' feet from the gas line easement. The excavation depth is planned to be 52 feet in this area. litri JsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 2 Case SS -3: Gas Line, County Road 25.5 Right -of -Way, Telephone Line, and House. The mining operation is adjacent to a gas line, Weld County Road 25.5 right-of-way, the edge of Weld County Road 25.5 (gravel road), telephone line, and a house on the west side of the north cell. The proposed setback for excavation is 40 feet from the gas line. The excavation depth is planned to be 59 feet in this area. Case SS -4: Two Gas Lines and a Gas Well. The mining operation is adjacent to two gas lines and a gas well east of the south cell. The proposed setback for excavation is 119 feet from the gas line. The excavation depth is planned to be 58 feet in this area. Case SS -5: Gas Line Easement, Two Gas Lines, and the Property Line. The mining operation is adjacent to a gas line easement, two gas lines, and the property line south of the south cell. The proposed setback for excavation is 42 feet from the gas line easement. The excavation depth is planned to be 61 feet in this area. Case SS -6: County Road 25.5 Right -of -Way, Gas Line, and House. The mining operation is adjacent to a Weld County Road 25.5 right-of-way, gas line, and house, the edge of Weld County Road 25.5 (gravel road), gas line, and a house on the west side of the south cell. The proposed setback for excavation is 46 feet from the Weld County Road 25.5 right-of-way. The excavation depth is planned to be 62 feet in this area. Case SS -7N: Western Mutual Ditch and Gas Line. The mining operation is adjacent to the Western Mutual Ditch and a gas line south of the north cell. The proposed setback for excavation is 55 feet from the Western Mutual Ditch. The excavation depth is planned to be 57 feet in this area. Case SS -7S: Western Mutual Ditch and Gas Line. The mining operation is adjacent to the Western Mutual Ditch and a gas line north of the south cell. The proposed setback for excavation is 71 feet from the Western Mutual Ditch. The excavation depth is planned to be 58 feet in this area. The cross -sections located in Appendix B show the estimated phreatic surface associated with each case as well as the geometry used in the excavation of the mining and reclamation slopes. Note that groundwater was found to be below all planned excavation depths. METHODOLOGY The excavation slope configuration shown in the computer analysis represents the estimated conditions for this site. If excavation slope conditions differ from the estimated conditions, the slope stability will need to be re-evaluated on a case -by -case basis. The Bishop Method was used in the computer analysis for determining safety factors. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 20,000 separate failure surfaces were analyzed for each case. The required IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 3 minimum safety factors are based on the policy of the Mined Land Reclamation Board (MLRB) for Factors of Safety for Slope Stability/ Geotechnical Analyses. All cases were analyzed using mining condition geometry to determine the factor of safety for each case. Case SS -1, for the north cell, is 42 feet from a critical structure and has a 57 foot depth of the reclamation slope. Case SS -7S, for the south cell, is 71 feet from a critical structure and has a 62 foot depth of the reclamation slope. Both cases were analyzed to determine the minimum factor of safety for all reclaimed slopes. SLOPE STABILITY RESULTS The MLRB requires minimum safety factors of 1.50 for static condition analyses and 1.30 for pseudo -static (earthquake loading) condition analyses for embankments adjacent to critical structures when estimated soil strength parameters are used. The calculated factors of safety are within the design criteria specified for this project and can be considered indicators of the excavation slope performance under the various conditions. The results of the static condition and pseudo -static condition slope stability analyses are shown in Table 2, Table 3, and Table 4 below. Table 2: Mining Conditions Static Condition Slope Stability Analysis Results Description Calculated Factor of Safety Required Minimum Factor of Safety Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Static 2.48 1.50 Case SS -2 — Gas Line Easement, Gas Line, Property Line / Fence, and House East of Pit — Static 2.57 1.50 Case SS -3 — Gas Line, County Road 25.5 ROW, Telephone Line, and House West of Pit — Static 2.61 1.50 Case SS -4 — Gravel Road & Fence East of Pit — Static 3.07 1.50 Case SS -5 — Gas Line Easement, Two Gas Lines, and the Property Line South of Pit — Static 2.45 1.50 Case SS -6 — County Road 25.5 ROW, Gas Line, and House West of Pit — Static 2.46 1.50 Case SS -7N — Western Mutual Ditch and Gas Line South of Pit - Static 2.60 1.50 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit - Static 2.96 1.50 IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 4 Table 3: Mining Conditions Pseudo -Static Condition Slope Stability Analysis Results Description Calculated Factor of Safety Required Minimum Factor of Safety Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Pseudo -Static 1.96 1.30 Case SS -2 — Gas Line Easement, Gas Line, Property Line / Fence, and House East of Pit — Pseudo -Static 2.02 1.30 Case SS -3 — Gas Line, County Road 25.5 ROW, Telephone Line, and House West of Pit — Pseudo -Static 2.05 1.30 Case SS -4 — Gravel Road & Fence East of Pit — Pseudo -Static 2.28 1.30 Case SS -5 — Gas Line Easement, Two Gas Lines, and the Property Line South of Pit — Pseudo -Static 1.94 1.30 Case SS -6 — County Road 25.5 ROW, Gas Line, and House West of Pit — Pseudo -Static 1.95 1.30 Case SS -7N — Western Mutual Ditch and Gas Line South of Pit — Pseudo -Static 2.04 1.30 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit — Pseudo -Static 2.27 1.30 Table 4: Reclaimed Conditions Static & Pseudo -Static Condition Slope Stability Analysis Results Description Calculated Factor of Safety Required Minimum Factor Of Safety Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Static 2.21 1.50 Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Pseudo -Static 1.76 1.30 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit - Static 2.53 1.50 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit — Pseudo -Static 1.93 1.30 The Galena analysis output files are included in Appendix C for all cases. IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 5 CONCLUSIONS AND RECOMMENDATIONS Mining Conditions: Case SS -1: At a setback of 39 feet, the resulting safety factor of 2.48 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.96 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 39 feet from the gas line easement, a gas line, Weld County Road 42 right-of-way, and the edge of Weld County Road 42 (gravel road) is satisfactory. Case SS -2: At a setback of 47 feet, the resulting safety factor of 2.57 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.02 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 47 feet from the gas line easement, a gas line, a property line/fence and a house is satisfactory. Case SS -3: At a setback of 40 feet, the resulting safety factor of 2.61 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.05 is above the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 40 feet from the gas line, Weld County Road 25.5 right-of-way, the edge of Weld County Road 25.5 (gravel road), telephone line, and a house is satisfactory. Case SS -4: At a setback of 119 feet, the resulting safety factor of 3.07 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.28 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 119 feet from the two gas lines and a gas well is satisfactory. Case SS -5: At a setback of 42 feet, the resulting safety factor of 2.45 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.94 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 42 feet from the gas line easement, two gas lines, and the property line is satisfactory. Case SS -6: At a setback of 46 feet, the resulting safety factor of 2.46 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.95 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 46 feet from the Weld County Road 25.5 right-of-way, gas line, and house is satisfactory. IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 6 Case SS -7N: At a setback of 55 feet, the resulting safety factor of 2.60 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.04 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 55 feet from the Western Mutual Ditch and a gas line is satisfactory. Case SS -7S: At a setback of 71 feet, the resulting safety factor of 2.96 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.27 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 71 feet from the Western Mutual Ditch and a gas line is satisfactory. Reclaimed Conditions: Case SS -1: At a setback of 39 feet, the resulting safety factor of 2.21 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.76 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 39 feet from the gas line easement, a gas line, Weld County Road 42 right-of-way, and the edge of Weld County Road 42 (gravel road) is satisfactory. Case SS -7S: At a setback of 71 feet, the resulting safety factor of 2.53 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.93 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 71 feet from the Western Mutual Ditch and a gas line is satisfactory. IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 7 The following recommendations for monitoring of slope stability should be followed: 1. A visual inspection of the excavated slopes should be done on a weekly basis for the duration of mining. This inspection should consist of walking the existing ground and looking for any signs of stress cracks or other potential signs of slope failure. Some minor sloughing of slopes is expected on any mine site. The intent of this inspection is to locate potential major slope failures that could potentially extend back into a structure. 2. A visual inspection should be done after a major precipitation event that has saturated the ground using the same procedures. A major precipitation event would be defined as a storm that produces an intensity level reached once in 50 years on the average. 3. If a visual inspection detects signs of a potential slope failure, qualified personnel should be contacted to evaluate and recommend remediation work to stabilize the area. 4. If no visible signs of slope failure are detected during mining, then the inspection period could be reduced to once per 6 months after mining completion, or after every major precipitation event. IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 8 APPENDIX A IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS.dwg, SS Case Map, 2/29/2024 8:16:45 AM SS -3 L z cn SS -6 i eE eE G II I I I I i ►I I I I SS -4 LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 SCALE IN FEET J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 APPENDIX B IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Mining Conditions IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) 4900 4850 4800 4750 4700 4650 4600 4550 O S CR 42 ROW W 3 t ll 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.48 Project Sweet Valley Pit SS -1 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS1-Mining.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .IxfConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) 4900 4850 4800 4750 4700 4650 4600 4550 O S CR 42 ROW W 3 t ll 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 1.96 Project Sweet Valley Pit SS -1 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS1-Mining-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .IxfConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) 4900 4850 4800 4750 4700 4650 4600 4550 4500 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.57 Project Sweet Valley Pit SS -2 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit \Slope Stability \ Galena \S.V. Pit-SS2-Mining.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .IxfConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) 4900 4850 4800 4750 4700 4650 4600 4550 4500 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.02 Project Sweet Valley Pit SS -2 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit \Slope Stability \ Galena \S.V. Pit-SS2-Mining-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .IxfConsulling.Inc, 4950 4900 4850 4800 4750 4700 4650 4600 4550 CR 42 ROW 40' z �n 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat {J 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat {J 6: Slurry Wall (c:0 0:45 g:100) Sat {J Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat {J Results Critical Factor of Safety: 2.61 Project Sweet Valley Pit SS -3 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS3-Mining.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 �' .pd.0 [nnsixlling, Inc, 4950 4900 4850 4800 4750 4700 4650 4600 4550 CR 42 ROW 40' z (n 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat {J 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat {J 6: Slurry Wall (c:0 0:45 g:100) Sat {J Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat {J Results Critical Factor of Safety: 2.05 Project Sweet Valley Pit SS -3 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS3-Mining-Pseudo Static.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 �' .pd.0 [nnsixlling, Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 4900 4850 4800 4750 4700 4650 4600 4550 4500 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat {J 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat {J 6: Slurry Wall (c:0 0:45 g:100) Sat {J Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat {J Results Critical Factor of Safety: 3.07 Project Sweet Valley Pit SS -4 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS4-Mining.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 �' .pd.0 [nnsix l ling, Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 4900 4850 4800 4750 4700 4650 4600 4550 4500 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat {J 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat {J 6: Slurry Wall (c:0 0:45 g:100) Sat {J Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat {J Results Critical Factor of Safety: 2.28 Project Sweet Valley Pit SS -4 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS4-Mining-Pseudo Static.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 �' .pd.0 [nnsix l ling, Inc, 4950 4900 4850 4800 4750 4700 4650 4600 4550 E E J W R c -D Gas Easement 42' E J Z cn Vl 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.45 Project Sweet Valley Pit SS -5 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS5-Mining.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .I14 fConsulling.Inc, 4950 4900 4850 4800 4750 4700 4650 4600 4550 E E J W R c -D Gas Easement 42' E J Z cn Vl 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 1.94 Project Sweet Valley Pit SS -5 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS5-Mining-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .I14 fConsulling.Inc, 4950 4900 4850 4800 4750 4700 4650 4600 4550 CR 42 ROW c� 46' r �n 2 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat {J 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat {J 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat {J 6: Slurry Wall (c:0 0:45 g:100) Sat {J Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat {J Results Critical Factor of Safety: 2.46 Project Sweet Valley Pit SS -6 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS6-Mining.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 �' .pd.0 [nnsixlling, Inc, 4950 4900 4850 4800 4750 4700 4650 4600 4550 CR 42 ROW c� 46' r �n 2 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat {J 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat {J 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat {J 6: Slurry Wall (c:0 0:45 g:100) Sat {J Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat {J Results Critical Factor of Safety: 1.95 Project Sweet Valley Pit SS -6 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS6-Mining-Pseudo Static.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 �' .pd.0 [nnsixlling, Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 4600 S. Ditch Bank N. Ditch Bank 55' Mining Limit sle 300 350 400 GALENA Version 7.2 450 500 550 600 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.60 Project Sweet Valley Pit SS -7N - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit\Slope Stability \Galena\S.V. Pit-SS7N-Mining.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 a ill' .IxfConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 4600 S. Ditch Bank N. Ditch Bank 55' Mining Limit sle 300 350 400 GALENA Version 7.2 450 500 550 600 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.04 Project Sweet Valley Pit SS -7N - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS7N-Mining-Pseudo Static.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 a I.14 fConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 0 50 100 150 200 250 300 GALENA version 7.2 71' S. Ditch Bankji N. Ditch Bank Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Sweet Valley Pit SS -7S - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability\Galena \S.V. Pit-SS7S-Mining.gmf Sat D 2.96 Edited: 4 Mar 2024 Processed: 4 Mar 2024 Ill "I ix CC nnsnning, Inc. id' Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 0 50 100 150 200 250 300 GALENA Version 7.2 71' z (n S. Ditch Bank V N. Ditch Bank Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.27 Project Sweet Valley Pit SS -7S - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS7S-Mining-Pseudo Static.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 a ill' .IxfConsulling.Inc, Reclamation Conditions IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) 4900 4850 4800 4750 4700 4650 4600 4550 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.21 Project Sweet Valley Pit SS -1 - Reclamation Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS1-Reclamation.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .IxfConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) 4900 4850 4800 4750 4700 4650 4600 4550 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 1.76 Project Sweet Valley Pit SS -1 - Reclamation Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit \112 Permit \Slope Stability \ Galena \S.V. Pit-SS1-Reclamation-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 a ill' .IxfConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 0 50 100 150 200 250 300 GALENA Version 7.2 71' N. Ditch Bank Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.53 Project Sweet Valley Pit SS -7S - Reclamation Slope - Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit \Slope Stability \ Galena \S.V. Pit-SS7S-Reclamation.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 a ill' .IxfConsulling.Inc, Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 0 50 100 150 200 250 300 GALENA Version 7.2 71' N. Ditch Bank Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 1.93 Project Sweet Valley Pit SS -7S - Reclamation Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit \Slope Stability \ Galena \S.V. Pit-SS7S-Reclamation-Pseudo Static.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 a ill' .IxfConsulling.Inc, APPENDIX C IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Mining Conditions IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SSl-Mining.gmf Processed: 05 Mar 2024 08:24:43 DATA: Analysis 1 - SS -1 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (13 points) Material beneath: 1 - Overburden/Clay 0.00 4754.96 81.03 4754.96 118.00 4753.00 4753.63 229.99 4753.00 251.81 4753.00 288.62 4753.10 4753.19 321.07 4748.00 470.50 4698.19 600.00 4698.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 288.62 4753.10 291.62 4753.10 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4748.00 288.62 4748.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 291.62 4748.00 321.07 4748.00 470.50 4697.35 Profile: 5 (3 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4697.69 470.50 4697.69 600.00 4697.69 Profile: 6 (3 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4695.69 470.50 4695.69 600.00 4695.69 Profile: 7 (3 points) Material beneath: 5 - Stable Sandstone Bedrock 0.00 4694.69 470.50 4694.69 600.00 4694.69 Slope Surface (13 points) 0.00 4754.96 4753.63 229.99 4753.00 4753.19 321.07 4748.00 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 81.03 251.81 470.50 4727.00 288.62 4754.96 4753.00 4698.19 118.00 288.62 600.00 4727.00 291.62 4753.00 4753.10 4698.00 170.00 291.62 170.00 291.62 4698.19 470.50 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 266.90 YL: 4753.04 XR: 470.50 YR: Centre: XC: 441.76 YC: 4996.81 Radius: R: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 250.00 20 20 50 4698.19 300.00 4754.00 199.95 4753.10 305.51 4754.00 199.95 4753.10 305.51 4698.19 600.00 RESULTS: Analysis 1 - SS -1 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.477 Analysis Summary There were: 18938 successful analyses from a total of 20001 trial failure surfaces 1063 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.48 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4753.05 470.76 4698.19 480.98 5123.07 425.00 2.476 <-- Critical Surface 2 271.90 4753.05 470.24 4698.28 480.84 5123.15 425.00 2.476 3 271.90 4753.05 470.76 4698.19 479.59 5117.99 419.90 2.476 4 271.90 4753.05 470.24 4698.28 479.44 5118.07 419.90 2.477 5 271.90 4753.05 469.71 4698.45 480.54 5123.31 425.00 2.477 6 271.90 4753.05 470.76 4698.19 478.18 5112.92 414.80 2.477 7 271.90 4753.05 470.24 4698.28 478.04 5113.00 414.80 2.477 8 271.90 4753.05 469.71 4698.45 479.14 5118.25 419.90 2.478 9 271.90 4753.05 469.18 4698.63 480.24 5123.48 425.00 2.478 10 271.90 4753.05 470.76 4698.19 476.78 5107.84 409.69 2.478 11 271.90 4753.05 470.24 4698.28 476.64 5107.92 409.69 2.478 12 271.90 4753.05 469.71 4698.45 477.74 5113.17 414.80 2.478 13 271.90 4753.05 469.18 4698.63 478.84 5118.42 419.90 2.479 14 271.90 4753.05 468.66 4698.80 479.94 5123.65 425.00 2.479 15 271.90 4753.05 470.76 4698.19 475.38 5102.75 404.59 2.479 16 271.90 4753.05 470.24 4698.28 475.24 5102.84 404.59 2.479 17 271.90 4753.05 469.71 4698.45 476.34 5108.09 409.69 2.479 18 271.90 4753.05 469.18 4698.63 477.44 5113.34 414.80 2.480 19 271.90 4753.05 468.66 4698.80 478.54 5118.59 419.90 2.480 20 271.90 4753.05 468.13 4698.98 479.64 5123.82 425.00 2.480 21 271.90 4753.05 470.76 4698.19 473.98 5097.67 399.49 2.480 22 271.90 4753.05 469.71 4698.45 474.94 5103.01 404.59 2.480 23 271.90 4753.05 469.18 4698.63 476.04 5108.26 409.69 2.480 24 271.90 4753.05 470.24 4698.28 473.83 5097.75 399.49 2.480 25 271.90 4753.05 468.66 4698.80 477.14 5113.51 414.80 2.481 26 271.90 4753.05 468.13 4698.98 478.24 5118.76 419.90 2.481 27 271.90 4753.05 467.61 4699.15 479.34 5123.99 425.00 2.481 28 271.90 4753.05 470.76 4698.19 472.57 5092.57 394.39 2.481 29 271.90 4753.05 469.18 4698.63 474.64 5103.18 404.59 2.481 30 271.90 4753.05 469.71 4698.45 473.54 5097.92 399.49 2.481 31 271.90 4753.05 468.66 4698.80 475.74 5108.44 409.69 2.482 32 271.90 4753.05 470.24 4698.28 472.42 5092.66 394.39 2.482 33 271.90 4753.05 468.13 4698.98 476.84 5113.68 414.80 2.482 34 271.90 4753.05 467.61 4699.15 477.94 5118.93 419.90 2.482 35 271.90 4753.05 467.08 4699.33 479.03 5124.16 425.00 2.482 36 271.90 4753.05 468.66 4698.80 474.34 5103.36 404.59 2.482 37 271.90 4753.05 469.18 4698.63 473.24 5098.10 399.49 2.483 38 271.90 4753.05 468.13 4698.98 475.45 5108.61 409.69 2.483 39 271.90 4753.05 470.76 4698.19 471.16 5087.48 389.29 2.483 40 271.90 4753.05 469.71 4698.45 472.13 5092.83 394.39 2.483 41 271.90 4753.05 467.61 4699.15 476.54 5113.85 414.80 2.483 42 271.90 4753.05 470.24 4698.28 471.02 5087.56 389.29 2.483 43 271.90 4753.05 467.08 4699.33 477.64 5119.10 419.90 2.483 44 271.37 4753.05 470.76 4698.19 480.43 5123.08 425.00 2.483 45 271.90 4753.05 466.55 4699.51 478.73 5124.33 425.00 2.483 46 271.90 4753.05 468.66 4698.80 472.94 5098.27 399.49 2.484 47 271.90 4753.05 468.13 4698.98 474.05 5103.53 404.59 2.484 48 271.90 4753.05 469.18 4698.63 471.83 5093.01 394.39 2.484 49 271.90 4753.05 467.61 4699.15 475.15 5108.78 409.69 2.484 50 271.37 4753.05 470.24 4698.28 480.29 5123.16 425.00 2.484 51 271.90 4753.05 469.71 4698.45 470.72 5087.74 389.29 2.484 52 271.90 4753.05 467.08 4699.33 476.24 5114.02 414.80 2.484 53 271.90 4753.05 470.76 4698.19 469.76 5082.37 384.18 2.484 54 271.90 4753.05 466.55 4699.51 477.34 5119.27 419.90 2.484 55 271.90 4753.05 470.24 4698.28 469.61 5082.46 384.18 2.484 56 271.37 4753.05 470.76 4698.19 479.04 5118.01 419.90 2.484 57 271.90 4753.05 466.03 4699.68 478.43 5124.50 425.00 2.485 58 271.90 4753.05 468.13 4698.98 472.64 5098.44 399.49 2.485 59 271.90 4753.05 467.61 4699.15 473.75 5103.70 404.59 2.485 60 271.37 4753.05 470.24 4698.28 478.89 5118.09 419.90 2.485 61 271.90 4753.05 468.66 4698.80 471.54 5093.18 394.39 2.485 62 271.90 4753.05 467.08 4699.33 474.85 5108.95 409.69 2.485 63 271.90 4753.05 469.18 4698.63 470.43 5087.91 389.29 2.485 64 271.37 4753.05 469.71 4698.45 479.99 5123.33 425.00 2.485 65 271.90 4753.05 466.55 4699.51 475.94 5114.20 414.80 2.485 66 271.90 4753.05 469.71 4698.45 469.32 5082.64 384.18 2.485 67 271.37 4753.05 470.76 4698.19 477.64 5112.93 414.80 2.485 68 271.90 4753.05 470.76 4698.19 468.35 5077.26 379.08 2.485 69 271.37 4753.05 470.24 4698.28 477.50 5113.01 414.80 2.486 70 271.90 4753.05 467.61 4699.15 472.35 5098.62 399.49 2.486 71 271.90 4753.05 470.24 4698.28 468.20 5077.35 379.08 2.486 72 271.90 4753.05 468.13 4698.98 471.24 5093.35 394.39 2.486 73 271.90 4753.05 467.08 4699.33 473.45 5103.87 404.59 2.486 74 271.90 4753.05 468.66 4698.80 470.13 5088.09 389.29 2.486 75 271.37 4753.05 469.71 4698.45 478.59 5118.26 419.90 2.486 76 271.90 4753.05 469.18 4698.63 469.02 5082.81 384.18 2.486 77 271.37 4753.05 469.18 4698.63 479.69 5123.50 425.00 2.486 78 271.37 4753.05 470.76 4698.19 476.24 5107.85 409.69 2.486 79 271.90 4753.05 469.71 4698.45 467.91 5077.53 379.08 2.487 80 271.37 4753.05 470.24 4698.28 476.10 5107.93 409.69 2.487 81 271.90 4753.05 467.61 4699.15 470.95 5093.53 394.39 2.487 82 271.37 4753.05 469.71 4698.45 477.20 5113.18 414.80 2.487 83 271.90 4753.05 468.13 4698.98 469.84 5088.26 389.29 2.487 84 271.90 4753.05 470.76 4698.19 466.94 5072.15 373.98 2.487 85 271.90 4753.05 468.66 4698.80 468.73 5082.99 384.18 2.487 86 271.37 4753.05 469.18 4698.63 478.29 5118.43 419.90 2.487 87 271.90 4753.05 470.24 4698.28 466.79 5072.24 373.98 2.487 88 271.90 4753.05 471.29 4698.19 466.95 5072.14 373.98 2.487 89 271.37 4753.05 470.76 4698.19 474.84 5102.76 404.59 2.487 90 271.90 4753.05 469.18 4698.63 467.61 5077.71 379.08 2.487 91 271.37 4753.05 468.66 4698.80 479.39 5123.67 425.00 2.487 92 271.37 4753.05 470.24 4698.28 474.70 5102.85 404.59 2.488 93 271.37 4753.05 469.71 4698.45 475.80 5108.10 409.69 2.488 94 271.90 4753.05 473.92 4698.19 468.41 5077.23 379.08 2.488 95 271.90 4753.05 475.50 4698.18 469.84 5082.32 384.18 2.488 96 271.90 4753.05 469.71 4698.45 466.50 5072.42 373.98 2.488 97 271.37 4753.05 469.18 4698.63 476.90 5113.35 414.80 2.488 98 271.90 4753.05 468.13 4698.98 468.43 5083.16 384.18 2.488 99 271.90 4753.05 466.03 4699.68 477.03 5119.43 419.90 2.488 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: Centre: XC: 480.98 YC: Generated failure surface: (20 points) 271.90 4733.48 321.25 4714.87 373.25 4703.04 427.04 4698.19 4753.05 4729.23 4711.95 4701.50 281.52 331.46 383.89 437.94 4753.05 5123.07 4747.78 4725.24 4709.31 4700.25 XR: 470.76 YR: 4698.19 Radius: R: 425.00 291.27 4742.76 301.14 4737.99 341.78 4721.51 352.18 4718.05 394.60 4706.94 405.36 4704.85 448.86 4699.28 459.80 4698.59 311.14 362.68 416.18 470.76 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 5.86 28.7 4.61 5.26 1 50.00 25.0 585.55 0.00 105.08 1.03 2 276.51 17.56 28.7 4.61 5.26 1 50.00 25.0 1756.44 0.00 335.27 1.03 3 281.12 22.73 27.4 3.75 4.22 2 10.00 35.0 2328.49 0.00 539.76 0.98 4 284.87 30.02 27.3 3.75 4.22 2 10.00 35.0 3165.22 0.00 735.00 0.98 5 288.62 25.55 27.3 2.65 2.98 6 0.00 45.0 2555.30 0.00 799.40 0.93 6 291.27 57.01 25.8 4.94 5.48 2 10.00 35.0 6176.87 0.00 1098.87 0.98 7 296.20 68.94 25.8 4.94 5.48 2 10.00 35.0 7546.76 0.00 1342.96 0.98 8 301.14 70.63 24.3 4.37 4.79 2 10.00 35.0 7783.16 0.00 1578.44 0.97 9 305.51 98.49 24.3 5.63 6.17 2 10.00 35.0 10966.98 0.00 1726.54 0.97 10 311.14 89.64 22.8 4.97 5.39 2 10.00 35.0 10122.97 0.00 1820.06 0.97 11 316.10 91.78 22.8 4.97 5.39 2 10.00 35.0 10493.47 0.00 1886.77 0.97 12 321.07 97.95 21.4 5.20 5.58 2 10.00 35.0 11262.66 0.00 1950.12 0.97 13 326.27 99.49 21.3 5.20 5.58 2 10.00 35.0 11438.33 0.00 1981.13 0.97 14 331.46 99.90 19.9 5.16 5.48 2 10.00 35.0 11482.71 0.00 2018.81 0.96 15 336.62 100.64 19.9 5.16 5.48 2 10.00 35.0 11565.55 0.00 2033.40 0.96 16 341.78 101.91 18.4 5.20 5.48 2 10.00 35.0 11708.92 0.00 2055.60 0.96 17 346.98 101.88 18.4 5.20 5.48 2 10.00 35.0 11703.45 0.00 2054.58 0.96 18 352.18 102.30 16.9 5.25 5.48 2 10.00 35.0 11749.20 0.00 2061.05 0.96 19 357.43 101.49 16.9 5.25 5.48 2 10.00 35.0 11653.83 0.00 2044.31 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.97 27 0.97 28 0.97 29 0.97 30 0.97 31 0.97 32 0.97 33 0.97 34 0.98 35 0.98 36 0.98 37 0.98 38 0.99 39 0.99 40 0.99 362.68 101.03 15.4 5.29 5.48 2 10.00 35.0 11599.28 367.96 99.43 15.4 5.29 5.48 2 10.00 35.0 11412.30 373.25 98.09 13.9 5.32 5.48 2 10.00 35.0 11256.21 378.57 95.69 13.9 5.32 5.48 2 10.00 35.0 10977.22 383.89 93.45 12.5 5.35 5.48 2 10.00 35.0 10717.09 389.25 90.23 12.5 5.35 5.48 2 10.00 35.0 10344.56 394.60 87.08 11.0 5.38 5.48 2 10.00 35.0 9979.46 399.98 83.05 11.0 5.38 5.48 2 10.00 35.0 9513.34 405.36 78.99 9.5 5.41 5.48 2 10.00 35.0 9043.83 410.77 74.14 9.5 5.41 5.48 2 10.00 35.0 8483.52 416.18 69.16 8.0 5.43 5.48 2 10.00 35.0 7909.09 421.61 63.50 8.0 5.43 5.48 2 10.00 35.0 7255.09 427.04 57.62 6.6 5.45 5.48 2 10.00 35.0 6576.59 432.49 51.14 6.6 5.45 5.48 2 10.00 35.0 5828.36 437.94 44.38 5.1 5.46 5.48 2 10.00 35.0 5048.43 443.40 37.08 5.1 5.46 5.48 2 10.00 35.0 4206.74 448.86 29.45 3.6 5.47 5.48 2 10.00 35.0 3326.44 454.33 21.35 3.6 5.47 5.48 2 10.00 35.0 2392.22 459.80 10.16 2.1 3.94 3.94 2 10.00 35.0 1121.16 463.75 5.55 2.1 3.94 3.94 2 10.00 35.0 590.32 467.69 1.13 2.1 3.07 3.08 1 50.00 25.0 113.36 X -S Area: 2675.44 Path Length: 208.37 X -S Weight: 303740.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2034.56 2001.70 1975.39 1926.35 1883.02 1817.53 1756.67 1674.64 1596.00 1497.05 1400.20 1284.37 1168.82 1035.81 901.31 750.96 596.99 429.25 281.31 148.05 35.87 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Mining-Pseudo Static.gmf Processed: 05 Mar 2024 08:28:08 DATA: Analysis 1 - SS -1 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (13 points) 0.00 4754.96 4753.63 229.99 4753.00 4753.19 321.07 4748.00 Profile: 2 (2 points) 288.62 4753.10 Profile: 3 (2 points) 0.00 4748.00 Profile: 4 (3 points) 291.62 4748.00 Profile: 5 (3 points) 0.00 4697.69 Profile: 6 (3 points) 0.00 4695.69 Profile: 7 (3 points) 0.00 4694.69 Slope Surface (13 points) 4754.96 4753.00 4748.00 0.00 4753.63 229.99 4753.19 321.07 Material beneath: 1 - Overburden/Clay 81.03 4754.96 118.00 251.81 4753.00 288.62 470.50 4698.19 600.00 Material beneath: 6 - Slurry Wall 291.62 4753.10 Material beneath: 2 - Sand and Gravel 288.62 4748.00 Material beneath: 2 - Sand and Gravel 321.07 4748.00 470.50 4697.35 Material beneath: 4 - Stable Siltstone Bedrock 470.50 4697.69 600.00 4697.69 Material beneath: 3 - Stable Claystone Bedrock 470.50 4695.69 600.00 4695.69 Material beneath: 5 - Stable Sandstone Bedrock 470.50 4694.69 600.00 4694.69 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 4727.00 81.03 251.81 470.50 4754.96 4753.00 4698.19 288.62 4727.00 118.00 288.62 600.00 4753.00 4753.10 4698.00 4753.00 4753.10 4698.00 291.62 4698.19 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Earthquake Force 266.90 441.76 YL: YC: 4753.04 4996.81 Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR: XR R 470.50 YR: Radius: R: 170.00 4754.00 199.95 291.62 4753.10 170.00 4754.00 291.62 4753.10 470.50 4698.19 4698.19 300.00 305.51 199.95 305.51 600.00 Range of variation: 10.00 Trial positions within range: 20 10.00 250.00 20 50 RESULTS: Analysis 1 - SS -1 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.774 Analysis Summary There were: 18938 successful analyses from a total of 20001 trial failure surfaces 1063 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.96 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4753.05 470.76 4698.19 480.98 5123.07 425.00 1.964 <-- Critical Surface 2 271.90 4753.05 470.24 4698.28 480.84 5123.15 425.00 1.964 3 271.90 4753.05 469.71 4698.45 480.54 5123.31 425.00 1.964 4 271.90 4753.05 470.76 4698.19 479.59 5117.99 419.90 1.964 5 271.90 4753.05 470.24 4698.28 479.44 5118.07 419.90 1.964 6 271.90 4753.05 469.18 4698.63 480.24 5123.48 425.00 1.965 7 271.90 4753.05 469.71 4698.45 479.14 5118.25 419.90 1.965 8 271.90 4753.05 470.76 4698.19 478.18 5112.92 414.80 1.965 9 271.90 4753.05 470.24 4698.28 478.04 5113.00 414.80 1.965 10 271.90 4753.05 468.66 4698.80 479.94 5123.65 425.00 1.966 11 271.90 4753.05 469.18 4698.63 478.84 5118.42 419.90 1.966 12 271.90 4753.05 469.71 4698.45 477.74 5113.17 414.80 1.966 13 271.90 4753.05 470.76 4698.19 476.78 5107.84 409.69 1.966 14 271.90 4753.05 470.24 4698.28 476.64 5107.92 409.69 1.966 15 271.90 4753.05 468.13 4698.98 479.64 5123.82 425.00 1.966 16 271.90 4753.05 468.66 4698.80 478.54 5118.59 419.90 1.966 17 271.90 4753.05 469.18 4698.63 477.44 5113.34 414.80 1.967 18 271.90 4753.05 469.71 4698.45 476.34 5108.09 409.69 1.967 19 271.90 4753.05 467.61 4699.15 479.34 5123.99 425.00 1.967 20 271.90 4753.05 468.13 4698.98 478.24 5118.76 419.90 1.967 21 271.90 4753.05 470.76 4698.19 475.38 5102.75 404.59 1.967 22 271.90 4753.05 470.24 4698.28 475.24 5102.84 404.59 1.967 23 271.90 4753.05 468.66 4698.80 477.14 5113.51 414.80 1.967 24 271.90 4753.05 469.18 4698.63 476.04 5108.26 409.69 1.967 25 271.90 4753.05 467.08 4699.33 479.03 5124.16 425.00 1.968 26 271.90 4753.05 467.61 4699.15 477.94 5118.93 419.90 1.968 27 271.90 4753.05 469.71 4698.45 474.94 5103.01 404.59 1.968 28 271.90 4753.05 468.13 4698.98 476.84 5113.68 414.80 1.968 29 271.90 4753.05 470.76 4698.19 473.98 5097.67 399.49 1.968 30 271.90 4753.05 468.66 4698.80 475.74 5108.44 409.69 1.968 31 271.90 4753.05 470.24 4698.28 473.83 5097.75 399.49 1.968 32 271.90 4753.05 466.55 4699.51 478.73 5124.33 425.00 1.968 33 271.90 4753.05 467.08 4699.33 477.64 5119.10 419.90 1.968 34 271.90 4753.05 469.18 4698.63 474.64 5103.18 404.59 1.968 35 271.90 4753.05 467.61 4699.15 476.54 5113.85 414.80 1.968 36 271.90 4753.05 468.13 4698.98 475.45 5108.61 409.69 1.969 37 271.90 4753.05 469.71 4698.45 473.54 5097.92 399.49 1.969 38 271.37 4753.05 470.76 4698.19 480.43 5123.08 425.00 1.969 39 271.90 4753.05 468.66 4698.80 474.34 5103.36 404.59 1.969 40 271.90 4753.05 466.03 4699.68 478.43 5124.50 425.00 1.969 41 271.90 4753.05 466.55 4699.51 477.34 5119.27 419.90 1.969 42 271.37 4753.05 470.24 4698.28 480.29 5123.16 425.00 1.969 43 271.90 4753.05 470.76 4698.19 472.57 5092.57 394.39 1.969 44 271.90 4753.05 467.08 4699.33 476.24 5114.02 414.80 1.969 45 271.90 4753.05 470.24 4698.28 472.42 5092.66 394.39 1.969 46 271.90 4753.05 467.61 4699.15 475.15 5108.78 409.69 1.969 47 271.90 4753.05 469.18 4698.63 473.24 5098.10 399.49 1.969 48 271.90 4753.05 468.13 4698.98 474.05 5103.53 404.59 1.970 49 271.37 4753.05 470.76 4698.19 479.04 5118.01 419.90 1.970 50 271.90 4753.05 469.71 4698.45 472.13 5092.83 394.39 1.970 51 271.90 4753.05 466.55 4699.51 475.94 5114.20 414.80 1.970 52 271.37 4753.05 469.71 4698.45 479.99 5123.33 425.00 1.970 53 271.90 4753.05 468.66 4698.80 472.94 5098.27 399.49 1.970 54 271.37 4753.05 470.24 4698.28 478.89 5118.09 419.90 1.970 55 271.90 4753.05 467.08 4699.33 474.85 5108.95 409.69 1.970 56 271.90 4753.05 467.61 4699.15 473.75 5103.70 404.59 1.970 57 271.90 4753.05 470.76 4698.19 471.16 5087.48 389.29 1.970 58 271.90 4753.05 470.24 4698.28 471.02 5087.56 389.29 1.970 59 271.90 4753.05 469.18 4698.63 471.83 5093.01 394.39 1.970 60 271.90 4753.05 468.13 4698.98 472.64 5098.44 399.49 1.971 61 271.37 4753.05 470.76 4698.19 477.64 5112.93 414.80 1.971 62 271.37 4753.05 469.18 4698.63 479.69 5123.50 425.00 1.971 63 271.37 4753.05 469.71 4698.45 478.59 5118.26 419.90 1.971 64 271.37 4753.05 470.24 4698.28 477.50 5113.01 414.80 1.971 65 271.90 4753.05 467.08 4699.33 473.45 5103.87 404.59 1.971 66 271.90 4753.05 469.71 4698.45 470.72 5087.74 389.29 1.971 67 271.90 4753.05 468.66 4698.80 471.54 5093.18 394.39 1.971 68 271.90 4753.05 467.61 4699.15 472.35 5098.62 399.49 1.971 69 271.37 4753.05 468.66 4698.80 479.39 5123.67 425.00 1.971 70 271.90 4753.05 470.76 4698.19 469.76 5082.37 384.18 1.971 71 271.90 4753.05 469.18 4698.63 470.43 5087.91 389.29 1.971 72 271.37 4753.05 469.18 4698.63 478.29 5118.43 419.90 1.971 73 271.90 4753.05 470.24 4698.28 469.61 5082.46 384.18 1.972 74 271.90 4753.05 468.13 4698.98 471.24 5093.35 394.39 1.972 75 271.37 4753.05 470.76 4698.19 476.24 5107.85 409.69 1.972 76 271.37 4753.05 469.71 4698.45 477.20 5113.18 414.80 1.972 77 271.37 4753.05 470.24 4698.28 476.10 5107.93 409.69 1.972 78 271.90 4753.05 466.03 4699.68 477.03 5119.43 419.90 1.972 79 271.90 4753.05 465.50 4699.86 478.12 5124.67 425.00 1.972 80 271.90 4753.05 468.66 4698.80 470.13 5088.09 389.29 1.972 81 271.90 4753.05 469.71 4698.45 469.32 5082.64 384.18 1.972 82 271.90 4753.05 467.61 4699.15 470.95 5093.53 394.39 1.972 83 271.37 4753.05 468.13 4698.98 479.08 5123.84 425.00 1.972 84 271.37 4753.05 468.66 4698.80 477.99 5118.60 419.90 1.972 85 271.37 4753.05 469.18 4698.63 476.90 5113.35 414.80 1.972 86 271.37 4753.05 469.71 4698.45 475.80 5108.10 409.69 1.973 87 271.37 4753.05 470.76 4698.19 474.84 5102.76 404.59 1.973 88 271.90 4753.05 469.18 4698.63 469.02 5082.81 384.18 1.973 89 271.90 4753.05 468.13 4698.98 469.84 5088.26 389.29 1.973 90 271.90 4753.05 465.50 4699.86 476.73 5119.60 419.90 1.973 91 271.90 4753.05 466.03 4699.68 475.64 5114.37 414.80 1.973 92 271.90 4753.05 470.76 4698.19 468.35 5077.26 379.08 1.973 93 271.90 4753.05 466.55 4699.51 474.55 5109.12 409.69 1.973 94 271.90 4753.05 470.24 4698.28 468.20 5077.35 379.08 1.973 95 271.37 4753.05 470.24 4698.28 474.70 5102.85 404.59 1.973 96 271.37 4753.05 467.61 4699.15 478.78 5124.01 425.00 1.973 97 271.37 4753.05 468.13 4698.98 477.69 5118.77 419.90 1.973 98 271.37 4753.05 468.66 4698.80 476.60 5113.52 414.80 1.973 99 270.85 4753.05 470.76 4698.19 479.88 5123.09 425.00 1.973 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: 4753.05 XR: 470.76 YR: 4698.19 Centre: XC: 480.98 YC: 5123.07 Radius: R: 425.00 Generated failure surface: (20 points) 271.90 4753 05 281.52 4747.78 291.27 4742.76 301.14 4737.99 311.14 4733.48 321.25 4729.23 331.46 4725.24 341.78 4721.51 352.18 4718.05 362.68 4714.87 373.25 4703.04 427.04 4698.19 4711.95 4701.50 383.89 4709.31 394.60 4706.94 437.94 4700.25 448.86 4699.28 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) 405.36 459.80 4704.85 416.18 4698.59 470.76 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 5.86 28.7 4.61 5.26 1 50.00 25.0 585.55 0.00 100.02 1.01 2 276.51 17.56 28.7 4.61 5.26 1 50.00 25.0 1756.44 0.00 324.73 1.01 3 281.12 22.73 27.4 3.75 4.22 2 10.00 35.0 2328.49 0.00 521.88 0.95 4 284.87 30.02 27.3 3.75 4.22 2 10.00 35.0 3165.22 0.00 710.95 0.95 5 288.62 25.55 27.3 2.65 2.98 6 0.00 45.0 2555.30 0.00 765.05 0.89 6 291.27 57.01 25.8 4.94 5.48 2 10.00 35.0 6176.87 0.00 1065.06 0.95 7 296.20 68.94 25.8 4.94 5.48 2 10.00 35.0 7546.76 0.00 1301.73 0.95 8 301.14 70.63 24.3 4.37 4.79 2 10.00 35.0 7783.16 0.00 1532.77 0.95 9 305.51 98.49 24.3 5.63 6.17 2 10.00 35.0 10966.98 0.00 1676.62 0.95 10 311.14 89.64 22.8 4.97 5.39 2 10.00 35.0 10122.97 0.00 1770.57 0.94 11 316.10 91.78 22.8 4.97 5.39 2 10.00 35.0 10493.47 0.00 1835.49 0.94 12 321.07 97.95 21.4 5.20 5.58 2 10.00 35.0 11262.66 0.00 1900.33 0.94 13 326.27 99.49 21.3 5.20 5.58 2 10.00 35.0 11438.33 0.00 1930.68 0.94 14 331.46 99.90 19.9 5.16 5.48 2 10.00 35.0 11482.71 0.00 1970.83 0.94 15 336.62 100.64 19.9 5.16 5.48 2 10.00 35.0 11565.55 0.00 1985.08 0.94 16 341.78 101.91 18.4 5.20 5.48 2 10.00 35.0 11708.92 0.00 2010.26 0.94 17 346.98 101.88 18.4 5.20 5.48 2 10.00 35.0 11703.45 0.00 2009.25 0.94 18 352.18 102.30 16.9 5.25 5.48 2 10.00 35.0 11749.20 0.00 2019.09 0.94 19 357.43 101.49 16.9 5.25 5.48 2 10.00 35.0 11653.83 0.00 2002.69 0.94 20 362.68 101.03 15.4 5.29 5.48 2 10.00 35.0 11599.28 0.00 1996.61 0.94 21 367.96 99.43 15.4 5.29 5.48 2 10.00 35.0 11412.30 0.00 1964.35 0.94 22 373.25 98.09 13.9 5.32 5.48 2 10.00 35.0 11256.21 0.00 1941.92 0.95 23 378.57 95.69 13.9 5.32 5.48 2 10.00 35.0 10977.22 0.00 1893.70 0.95 24 383.89 93.45 12.5 5.35 5.48 2 10.00 35.0 10717.09 0.00 1854.34 0.95 25 389.25 90.23 12.5 5.35 5.48 2 10.00 35.0 10344.56 0.00 1789.85 0.95 26 394.60 87.08 11.0 5.38 5.48 2 10.00 35.0 9979.46 0.00 1732.95 0.95 27 399.98 83.05 11.0 5.38 5.48 2 10.00 35.0 9513.34 0.00 1652.02 0.95 28 405.36 78.99 9.5 5.41 5.48 2 10.00 35.0 9043.83 0.00 1577.24 0.96 29 410.77 74.14 9.5 5.41 5.48 2 10.00 35.0 8483.52 0.00 1479.42 0.96 30 416.18 69.16 8.0 5.43 5.48 2 10.00 35.0 7909.09 0.00 1386.19 0.96 31 421.61 63.50 8.0 5.43 5.48 2 10.00 35.0 7255.09 0.00 1271.50 0.96 32 427.04 57.62 6.6 5.45 5.48 2 10.00 35.0 6576.59 0.00 1159.19 0.97 33 432.49 51.14 6.6 5.45 5.48 2 10.00 35.0 5828.36 0.00 1027.27 0.97 34 437.94 44.38 5.1 5.46 5.48 2 10.00 35.0 5048.43 0.00 895.50 0.97 35 443.40 37.08 5.1 5.46 5.48 2 10.00 35.0 4206.74 0.00 746.10 0.97 36 448.86 29.45 3.6 5.47 5.48 2 10.00 35.0 3326.44 0.00 594.22 0.98 37 454.33 21.35 3.6 5.47 5.48 2 10.00 35.0 2392.22 0.00 427.24 0.98 38 459.80 10.16 2.1 3.94 3.94 2 10.00 35.0 1121.16 0.00 280.52 0.99 39 463.75 5.55 2.1 3.94 3.94 2 10.00 35.0 590.32 0.00 147.62 0.99 40 467.69 1.13 2.1 3.07 3.08 1 50.00 25.0 113.36 0.00 35.61 0.99 X -S Area: 2675.44 Path Length: 208.37 X -S Weight: 303740.50 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS2-Mining.gmf Processed: 05 Mar 2024 08:44:44 DATA: Analysis 1 - SS -2 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (10 points) Material beneath: 1 - Overburden/Clay 0.00 4751.99 232.61 4749.50 Profile: 2 261.27 Profile: 3 0.00 Profile: 4 264.27 Profile: 5 0.00 Profile: 6 0.00 4753.00 4751.94 (2 points) 4751.86 (2 points) 4749.50 (4 points) 4749.50 (4 points) 4697.04 (4 points) 4688.50 Slope Surface (12 points) 0.00 4753.00 4751.99 232.61 4751.94 4749.50 440.55 4697.35 29.88 4754.00 128.82 261.27 4751.86 264.27 4754.00 200.04 4751.86 277.37 Material beneath: 6 - Slurry Wall 264.27 4751.86 Material beneath: 2 - Sand and Gravel 261.27 4749.50 Material beneath: 2 - Sand and Gravel 284.10 4749.50 440.55 4697.35 Material beneath: 3 - Stable Claystone Bedrock 262.77 4697.05 440.55 4697.35 Material beneath: 5 - Stable Sandstone Bedrock 262.77 4688.50 440.55 4688.50 Phreatic Surface (5 points) 0.00 4697.00 Failure Surface 4733.50 29.88 261.27 600.00 261.27 4754.00 4751.86 4697.00 4733.50 128.82 4754.00 264.27 4751.86 264.27 4697.35 Initial circular surface for critical search defined by: XL,XR,R 230.00 YL: 4751.95 XR: 440.55 YR: 418.78 YC: 5046.67 Radius: R: Intersects: Centre: XL: XC: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR R 10.00 300.00 20 50 RESULTS: Analysis 1 - SS -2 - Mining Slope - Static 600.00 600.00 600.00 200.04 4752.00 213.50 4751.83 284.10 4697.00 4697.00 4688.50 4752.00 277.37 4751.83 440.55 4697.35 350.00 4697.35 213.50 284.10 600.00 Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.603 Analysis Summary There were: 17806 successful analyses from a total of 20001 trial failure surfaces 2195 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.57 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 235.00 4751.93 440.81 4697.35 463.14 5196.85 500.00 2.569 <-- Critical Surface 2 235.00 4751.93 440.81 4697.35 461.53 5190.79 493.88 2.569 3 235.00 4751.93 440.29 4697.44 463.00 5196.92 500.00 2.570 4 235.00 4751.93 440.81 4697.35 459.93 5184.73 487.76 2.570 5 235.00 4751.93 440.29 4697.44 461.39 5190.86 493.88 2.570 6 235.00 4751.93 440.81 4697.35 458.32 5178.66 481.63 2.570 7 235.00 4751.93 440.29 4697.44 459.79 5184.80 487.76 2.570 8 235.00 4751.93 440.81 4697.35 456.71 5172.59 475.51 2.571 9 235.00 4751.93 440.29 4697.44 458.18 5178.74 481.63 2.571 10 235.00 4751.93 439.76 4697.61 462.68 5197.09 500.00 2.571 11 235.00 4751.93 440.81 4697.35 455.10 5166.52 469.39 2.571 12 235.00 4751.93 440.29 4697.44 456.56 5172.67 475.51 2.572 13 235.00 4751.93 439.76 4697.61 461.07 5191.03 493.88 2.572 14 235.00 4751.93 440.81 4697.35 453.48 5160.44 463.27 2.572 15 235.00 4751.93 440.29 4697.44 454.95 5166.60 469.39 2.572 16 235.00 4751.93 439.76 4697.61 459.46 5184.97 487.76 2.572 17 235.00 4751.93 439.76 4697.61 457.85 5178.91 481.63 2.573 18 235.00 4751.93 440.81 4697.35 451.87 5154.36 457.14 2.573 19 235.00 4751.93 440.29 4697.44 453.34 5160.52 463.27 2.573 20 235.00 4751.93 439.23 4697.79 462.35 5197.25 500.00 2.573 21 235.00 4751.93 439.76 4697.61 456.24 5172.84 475.51 2.573 22 235.00 4751.93 439.23 4697.79 460.75 5191.20 493.88 2.573 23 235.00 4751.93 440.29 4697.44 451.72 5154.44 457.14 2.574 24 235.00 4751.93 440.81 4697.35 450.26 5148.27 451.02 2.574 25 235.00 4751.93 439.76 4697.61 454.63 5166.77 469.39 2.574 26 235.00 4751.93 439.23 4697.79 459.14 5185.14 487.76 2.574 27 235.00 4751.93 440.29 4697.44 450.11 5148.35 451.02 2.574 28 235.00 4751.93 439.23 4697.79 457.53 5179.07 481.63 2.574 29 235.00 4751.93 440.81 4697.35 448.64 5142.18 444.90 2.574 30 235.00 4751.93 439.76 4697.61 453.02 5160.69 463.27 2.575 31 235.00 4751.93 438.71 4697.96 462.03 5197.42 500.00 2.575 32 235.00 4751.93 439.23 4697.79 455.92 5173.01 475.51 2.575 33 235.00 4751.93 440.29 4697.44 448.49 5142.26 444.90 2.575 34 235.00 4751.93 439.76 4697.61 451.41 5154.61 457.14 2.575 35 235.00 4751.93 438.71 4697.96 460.42 5191.36 493.88 2.575 36 235.00 4751.93 440.81 4697.35 447.02 5136.08 438.78 2.575 37 234.47 4751.93 440.81 4697.35 462.57 5196.88 500.00 2.575 38 235.00 4751.93 439.23 4697.79 454.32 5166.93 469.39 2.576 39 235.00 4751.93 438.71 4697.96 458.82 5185.30 487.76 2.576 40 234.47 4751.93 440.81 4697.35 460.96 5190.82 493.88 2.576 41 235.00 4751.93 439.76 4697.61 449.79 5148.52 451.02 2.576 42 235.00 4751.93 438.71 4697.96 457.21 5179.24 481.63 2.576 43 235.00 4751.93 440.29 4697.44 446.87 5136.16 438.78 2.576 44 234.47 4751.93 440.29 4697.44 462.43 5196.95 500.00 2.576 45 235.00 4751.93 439.23 4697.79 452.70 5160.86 463.27 2.576 46 234.47 4751.93 440.81 4697.35 459.36 5184.75 487.76 2.576 47 235.00 4751.93 440.81 4697.35 445.41 5129.98 432.65 2.576 48 235.00 4751.93 438.18 4698.14 461.70 5197.59 500.00 2.577 49 234.47 4751.93 440.29 4697.44 460.82 5190.89 493.88 2.577 50 235.00 4751.93 438.71 4697.96 455.60 5173.17 475.51 2.577 51 234.47 4751.93 440.81 4697.35 457.76 5178.68 481.63 2.577 52 235.00 4751.93 439.76 4697.61 448.18 5142.43 444.90 2.577 53 235.00 4751.93 439.23 4697.79 451.09 5154.78 457.14 2.577 54 235.00 4751.93 438.18 4698.14 460.10 5191.53 493.88 2.577 55 234.47 4751.93 440.29 4697.44 459.22 5184.83 487.76 2.577 56 235.00 4751.93 440.29 4697.44 445.25 5130.06 432.65 2.577 57 235.00 4751.93 438.71 4697.96 453.99 5167.10 469.39 2.577 58 234.47 4751.93 440.81 4697.35 456.15 5172.61 475.51 2.577 59 235.00 4751.93 438.18 4698.14 458.49 5185.47 487.76 2.577 60 235.00 4751.93 440.81 4697.35 443.79 5123.87 426.53 2.578 61 234.47 4751.93 440.29 4697.44 457.61 5178.76 481.63 2.578 62 235.00 4751.93 439.23 4697.79 449.48 5148.69 451.02 2.578 63 235.00 4751.93 439.76 4697.61 446.56 5136.34 438.78 2.578 64 234.47 4751.93 439.76 4697.61 462.10 5197.11 500.00 2.578 65 235.00 4751.93 438.18 4698.14 456.89 5179.41 481.63 2.578 66 235.00 4751.93 438.71 4697.96 452.39 5161.03 463.27 2.578 67 234.47 4751.93 440.81 4697.35 454.54 5166.54 469.39 2.578 68 234.47 4751.93 440.29 4697.44 456.01 5172.69 475.51 2.578 69 235.00 4751.93 440.29 4697.44 443.63 5123.96 426.53 2.578 70 234.47 4751.93 439.76 4697.61 460.50 5191.06 493.88 2.578 71 235.00 4751.93 437.66 4698.31 461.37 5197.75 500.00 2.578 72 235.00 4751.93 438.18 4698.14 455.28 5173.34 475.51 2.578 73 235.00 4751.93 439.23 4697.79 447.86 5142.60 444.90 2.579 74 235.00 4751.93 438.71 4697.96 450.77 5154.95 457.14 2.579 75 234.47 4751.93 440.81 4697.35 452.93 5160.46 463.27 2.579 76 235.00 4751.93 441.34 4697.35 442.16 5117.76 420.41 2.579 77 235.00 4751.93 440.81 4697.35 442.16 5117.76 420.41 2.579 78 234.47 4751.93 440.29 4697.44 454.40 5166.61 469.39 2.579 79 234.47 4751.93 439.76 4697.61 458.90 5184.99 487.76 2.579 80 235.00 4751.93 437.66 4698.31 459.77 5191.70 493.88 2.579 81 235.00 4751.93 439.76 4697.61 444.94 5130.24 432.65 2.579 82 235.00 4751.93 438.18 4698.14 453.68 5167.27 469.39 2.579 83 235.00 4751.93 437.66 4698.31 458.17 5185.64 487.76 2.579 84 234.47 4751.93 439.76 4697.61 457.29 5178.93 481.63 2.579 85 235.00 4751.93 438.71 4697.96 449.16 5148.86 451.02 2.579 86 234.47 4751.93 440.81 4697.35 451.32 5154.37 457.14 2.579 87 234.47 4751.93 440.29 4697.44 452.79 5160.53 463.27 2.579 88 235.00 4751.93 439.23 4697.79 446.25 5136.51 438.78 2.579 89 235.00 4751.93 440.29 4697.44 442.01 5117.84 420.41 2.580 90 235.00 4751.93 438.18 4698.14 452.07 5161.20 463.27 2.580 91 234.47 4751.93 439.23 4697.79 461.78 5197.28 500.00 2.580 92 235.00 4751.93 437.66 4698.31 456.57 5179.58 481.63 2.580 93 234.47 4751.93 439.76 4697.61 455.69 5172.86 475.51 2.580 94 235.00 4751.93 439.76 4697.61 443.32 5124.13 426.53 2.580 95 235.00 4751.93 441.34 4697.35 440.54 5111.63 414.29 2.580 96 235.00 4751.93 440.81 4697.35 440.54 5111.64 414.29 2.580 97 234.47 4751.93 439.23 4697.79 460.18 5191.22 493.88 2.580 98 234.47 4751.93 440.29 4697.44 451.18 5154.45 457.14 2.580 99 235.00 4751.93 437.66 4698.31 454.96 5173.51 475.51 2.580 Critical Failure Surface (circle 1) Intersects: Centre: XL: XC: 235.00 463.14 YL: YC: Generated failure surface: (20 points) 235.00 4733.16 286.59 4715.04 340.43 4703.05 395.84 4697.35 4751.93 4729.06 4712.14 4701.40 4751.93 5196.85 245.11 4746.89 297.20 4725.19 351.41 4709.49 407.04 4700.01 XR: 440.81 YR: 4697.35 Radius: R: 500.00 255.32 307.90 362.45 418.28 4742.08 4721.56 4707.09 4698.87 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) 265.65 318.67 373.53 429.54 4737.51 4718.18 4704.95 4697.98 276.07 329.52 384.67 440.81 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 235.00 5.90 26.5 4.88 5.45 1 50.00 25.0 590.45 0.00 102.05 1.02 2 239.88 19.42 26.5 5.23 5.84 2 10.00 35.0 2043.72 0.00 342.53 0.98 3 245.11 31.71 25.2 5.11 5.65 2 10.00 35.0 3462.38 0.00 599.03 0.98 4 250.22 43.92 25.2 5.11 5.65 2 10.00 35.0 4868.27 0.00 842.93 0.98 5 255.32 66.01 23.9 5.95 6.50 2 10.00 35.0 7380.10 0.00 1105.82 0.98 6 261.27 39.23 23.9 3.00 3.28 6 0.00 45.0 3923.14 0.00 1115.23 0.93 7 264.27 19.35 23.9 1.38 1.51 2 10.00 35.0 2176.75 0.00 1408.02 0.98 8 265.65 80.42 22.6 5.21 5.65 2 10.00 35.0 9064.67 0.00 1560.30 0.97 9 270.86 91.68 22.6 5.21 5.65 2 10.00 35.0 10360.18 0.00 1783.49 0.97 10 276.07 24.55 21.3 1.30 1.39 2 10.00 35.0 2778.15 0.00 1933.55 0.97 11 277.37 130.03 21.3 6.73 7.22 2 10.00 35.0 14836.12 0.00 1991.11 0.97 12 284.10 48.70 21.3 2.49 2.68 2 10.00 35.0 5600.42 0.00 2029.66 0.97 13 286.59 104.48 20.0 5.30 5.65 2 10.00 35.0 12015.17 0.00 2058.88 0.97 14 291.90 105.36 20.0 5.30 5.65 2 10.00 35.0 12116.15 0.00 2076.24 0.97 15 297.20 106.72 18.7 5.35 5.65 2 10.00 35.0 12273.25 0.00 2099.75 0.97 16 302.55 106.89 18.7 5.35 5.65 2 10.00 35.0 12292.69 0.00 2103.14 0.97 17 307.90 107.49 17.4 5.39 5.65 2 10.00 35.0 12361.37 0.00 2112.59 0.97 18 313.28 106.93 17.4 5.39 5.65 2 10.00 35.0 12297.48 0.00 2101.67 0.97 19 318.67 106.74 16.1 5.42 5.65 2 10.00 35.0 12275.35 0.00 2096.68 0.96 20 324.09 105.45 16.1 5.42 5.65 2 10.00 35.0 12127.03 0.00 2071.34 0.96 21 0.96 22 0.96 23 0.97 24 0.97 25 0.97 26 0.97 27 0.97 28 0.97 29 0.97 30 0.97 31 0.97 32 0.97 33 0.97 34 0.97 35 0.98 36 0.98 37 0.98 38 0.98 39 0.99 40 0.99 329.52 104.45 14.9 5.46 5.65 2 10.00 35.0 12012.28 334.98 102.43 14.9 5.46 5.65 2 10.00 35.0 11779.05 340.43 100.60 13.6 5.49 5.65 2 10.00 35.0 11569.20 345.92 97.83 13.6 5.49 5.65 2 10.00 35.0 11249.88 351.41 95.17 12.3 5.52 5.65 2 10.00 35.0 10944.88 356.93 91.65 12.3 5.52 5.65 2 10.00 35.0 10539.37 362.45 88.15 11.0 5.54 5.65 2 10.00 35.0 10137.63 367.99 83.87 11.0 5.54 5.65 2 10.00 35.0 9644.94 373.53 79.54 9.7 5.57 5.65 2 10.00 35.0 9147.13 379.10 74.50 9.7 5.57 5.65 2 10.00 35.0 8567.03 384.67 69.33 8.4 5.59 5.65 2 10.00 35.0 7973.27 390.25 63.53 8.4 5.59 5.65 2 10.00 35.0 7305.82 395.84 57.54 7.1 5.60 5.65 2 10.00 35.0 6616.68 401.44 50.97 7.1 5.60 5.65 2 10.00 35.0 5861.53 407.04 44.15 5.8 5.62 5.65 2 10.00 35.0 5077.67 412.66 36.84 5.8 5.62 5.65 2 10.00 35.0 4236.07 418.28 29.21 4.5 5.63 5.65 2 10.00 35.0 3359.67 423.91 21.14 4.5 5.63 5.65 2 10.00 35.0 2431.64 429.54 12.49 3.2 5.48 5.49 2 10.00 35.0 1436.79 435.02 4.15 3.2 5.79 5.80 2 10.00 35.0 477.35 X -S Area: 2758.55 Path Length: 214.57 X -S Weight: 315210.72 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2051.53 2011.72 1976.75 1922.21 1871.89 1802.46 1736.35 1651.89 1569.72 1470.13 1371.66 1256.78 1141.65 1011.30 879.18 733.38 584.00 422.61 258.02 80.92 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS2-Mining-Pseudo Static.gmf Processed: 05 Mar 2024 08:47:10 DATA: Analysis 1 - SS -2 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (10 points) 0.00 4753.00 4751.99 232.61 4751.94 4749.50 Profile: 2 (2 points) 261.27 4751.86 Profile: 3 (2 points) 0.00 4749.50 Profile: 4 (4 points) 264.27 4749.50 Profile: 5 (4 points) 0.00 4697.04 Profile: 6 (4 points) 0.00 4688.50 Slope Surface (12 points) 0.00 4753.00 4751.99 232.61 4751.94 4749.50 440.55 4697.35 Material beneath: 1 - Overburden/Clay 29.88 4754.00 128.82 261.27 4751.86 4754.00 200.04 264.27 4751.86 Material beneath: 6 Slurry Wall 264.27 4751.86 Material beneath: 2 - Sand and Gravel 261.27 4749.50 Material beneath: 2 - Sand and Gravel 284.10 4749.50 440.55 4697.35 Material beneath: 3 - Stable Claystone Bedrock 262.77 4697.05 440.55 4697.35 Material beneath: 5 - Stable Sandstone Bedrock 262.77 4688.50 440.55 4688.50 Phreatic Surface (5 points) 0.00 4697.00 Failure Surface 4733.50 29.88 261.27 600.00 4754.00 4751.86 4697.00 261.27 4733.50 128.82 4754.00 264.27 4751.86 264.27 4697.35 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Earthquake Force 230.00 418.78 YL: YC: 4751.95 5046.67 Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR: XR R 10.00 300.00 20 50 440.55 YR: Radius: R: 4752.00 213.50 277.37 4751.83 600.00 600.00 600.00 200.04 4697.00 4697.00 4688.50 4752.00 277.37 4751.83 440.55 4697.35 350.00 4697.35 284.10 213.50 284.10 600.00 RESULTS: Analysis 1 - SS -2 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.855 Analysis Summary There were: 17806 successful analyses from a total of 20001 trial failure surfaces 2195 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.02 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 235.00 4751.93 440.81 4697.35 463.14 5196.85 500.00 2.022 <-- Critical Surface 2 235.00 4751.93 440.29 4697.44 463.00 5196.92 500.00 2.023 3 235.00 4751.93 440.81 4697.35 461.53 5190.79 493.88 2.023 4 235.00 4751.93 440.29 4697.44 461.39 5190.86 493.88 2.023 5 235.00 4751.93 440.81 4697.35 459.93 5184.73 487.76 2.023 6 235.00 4751.93 440.29 4697.44 459.79 5184.80 487.76 2.024 7 235.00 4751.93 439.76 4697.61 462.68 5197.09 500.00 2.024 8 235.00 4751.93 440.81 4697.35 458.32 5178.66 481.63 2.024 9 235.00 4751.93 439.76 4697.61 461.07 5191.03 493.88 2.024 10 235.00 4751.93 440.29 4697.44 458.18 5178.74 481.63 2.024 11 235.00 4751.93 440.81 4697.35 456.71 5172.59 475.51 2.025 12 235.00 4751.93 439.76 4697.61 459.46 5184.97 487.76 2.025 13 235.00 4751.93 440.29 4697.44 456.56 5172.67 475.51 2.025 14 235.00 4751.93 439.23 4697.79 462.35 5197.25 500.00 2.025 15 235.00 4751.93 440.81 4697.35 455.10 5166.52 469.39 2.025 16 235.00 4751.93 439.76 4697.61 457.85 5178.91 481.63 2.025 17 235.00 4751.93 439.23 4697.79 460.75 5191.20 493.88 2.025 18 235.00 4751.93 440.29 4697.44 454.95 5166.60 469.39 2.026 19 235.00 4751.93 440.81 4697.35 453.48 5160.44 463.27 2.026 20 235.00 4751.93 439.23 4697.79 459.14 5185.14 487.76 2.026 21 235.00 4751.93 439.76 4697.61 456.24 5172.84 475.51 2.026 22 235.00 4751.93 438.71 4697.96 462.03 5197.42 500.00 2.026 23 235.00 4751.93 440.29 4697.44 453.34 5160.52 463.27 2.026 24 235.00 4751.93 439.23 4697.79 457.53 5179.07 481.63 2.027 25 235.00 4751.93 438.71 4697.96 460.42 5191.36 493.88 2.027 26 235.00 4751.93 440.81 4697.35 451.87 5154.36 457.14 2.027 27 234.47 4751.93 440.81 4697.35 462.57 5196.88 500.00 2.027 28 235.00 4751.93 439.76 4697.61 454.63 5166.77 469.39 2.027 29 235.00 4751.93 440.29 4697.44 451.72 5154.44 457.14 2.027 30 235.00 4751.93 438.71 4697.96 458.82 5185.30 487.76 2.027 31 235.00 4751.93 439.23 4697.79 455.92 5173.01 475.51 2.027 32 234.47 4751.93 440.29 4697.44 462.43 5196.95 500.00 2.027 33 234.47 4751.93 440.81 4697.35 460.96 5190.82 493.88 2.027 34 235.00 4751.93 438.18 4698.14 461.70 5197.59 500.00 2.027 35 235.00 4751.93 439.76 4697.61 453.02 5160.69 463.27 2.027 36 235.00 4751.93 440.81 4697.35 450.26 5148.27 451.02 2.027 37 234.47 4751.93 440.29 4697.44 460.82 5190.89 493.88 2.028 38 235.00 4751.93 438.71 4697.96 457.21 5179.24 481.63 2.028 39 234.47 4751.93 440.81 4697.35 459.36 5184.75 487.76 2.028 40 235.00 4751.93 438.18 4698.14 460.10 5191.53 493.88 2.028 41 235.00 4751.93 439.23 4697.79 454.32 5166.93 469.39 2.028 42 235.00 4751.93 440.29 4697.44 450.11 5148.35 451.02 2.028 43 234.47 4751.93 440.29 4697.44 459.22 5184.83 487.76 2.028 44 235.00 4751.93 439.76 4697.61 451.41 5154.61 457.14 2.028 45 234.47 4751.93 439.76 4697.61 462.10 5197.11 500.00 2.028 46 235.00 4751.93 438.18 4698.14 458.49 5185.47 487.76 2.028 47 235.00 4751.93 438.71 4697.96 455.60 5173.17 475.51 2.028 48 234.47 4751.93 440.81 4697.35 457.76 5178.68 481.63 2.028 49 235.00 4751.93 440.81 4697.35 448.64 5142.18 444.90 2.028 50 235.00 4751.93 437.66 4698.31 461.37 5197.75 500.00 2.028 51 235.00 4751.93 439.23 4697.79 452.70 5160.86 463.27 2.028 52 234.47 4751.93 440.29 4697.44 457.61 5178.76 481.63 2.029 53 234.47 4751.93 439.76 4697.61 460.50 5191.06 493.88 2.029 54 235.00 4751.93 440.29 4697.44 448.49 5142.26 444.90 2.029 55 235.00 4751.93 438.18 4698.14 456.89 5179.41 481.63 2.029 56 234.47 4751.93 440.81 4697.35 456.15 5172.61 475.51 2.029 57 235.00 4751.93 437.66 4698.31 459.77 5191.70 493.88 2.029 58 235.00 4751.93 438.71 4697.96 453.99 5167.10 469.39 2.029 59 235.00 4751.93 439.76 4697.61 449.79 5148.52 451.02 2.029 60 235.00 4751.93 439.23 4697.79 451.09 5154.78 457.14 2.029 61 235.00 4751.93 440.81 4697.35 447.02 5136.08 438.78 2.029 62 234.47 4751.93 439.76 4697.61 458.90 5184.99 487.76 2.029 63 234.47 4751.93 440.29 4697.44 456.01 5172.69 475.51 2.029 64 235.00 4751.93 438.18 4698.14 455.28 5173.34 475.51 2.029 65 234.47 4751.93 439.23 4697.79 461.78 5197.28 500.00 2.029 66 235.00 4751.93 437.66 4698.31 458.17 5185.64 487.76 2.029 67 234.47 4751.93 440.81 4697.35 454.54 5166.54 469.39 2.029 68 235.00 4751.93 438.71 4697.96 452.39 5161.03 463.27 2.030 69 235.00 4751.93 437.13 4698.49 461.05 5197.92 500.00 2.030 70 235.00 4751.93 440.29 4697.44 446.87 5136.16 438.78 2.030 71 234.47 4751.93 439.76 4697.61 457.29 5178.93 481.63 2.030 72 235.00 4751.93 439.76 4697.61 448.18 5142.43 444.90 2.030 73 234.47 4751.93 439.23 4697.79 460.18 5191.22 493.88 2.030 74 235.00 4751.93 437.66 4698.31 456.57 5179.58 481.63 2.030 75 235.00 4751.93 438.18 4698.14 453.68 5167.27 469.39 2.030 76 234.47 4751.93 440.29 4697.44 454.40 5166.61 469.39 2.030 77 235.00 4751.93 439.23 4697.79 449.48 5148.69 451.02 2.030 78 235.00 4751.93 437.13 4698.49 459.45 5191.86 493.88 2.030 79 234.47 4751.93 440.81 4697.35 452.93 5160.46 463.27 2.030 80 235.00 4751.93 440.81 4697.35 445.41 5129.98 432.65 2.030 81 235.00 4751.93 438.71 4697.96 450.77 5154.95 457.14 2.030 82 234.47 4751.93 439.23 4697.79 458.57 5185.16 487.76 2.030 83 234.47 4751.93 439.76 4697.61 455.69 5172.86 475.51 2.030 84 235.00 4751.93 437.66 4698.31 454.96 5173.51 475.51 2.030 85 234.47 4751.93 438.71 4697.96 461.45 5197.45 500.00 2.030 86 235.00 4751.93 437.13 4698.49 457.85 5185.81 487.76 2.030 87 235.00 4751.93 438.18 4698.14 452.07 5161.20 463.27 2.031 88 235.00 4751.93 436.60 4698.67 460.72 5198.08 500.00 2.031 89 235.00 4751.93 440.29 4697.44 445.25 5130.06 432.65 2.031 90 234.47 4751.93 440.29 4697.44 452.79 5160.53 463.27 2.031 91 235.00 4751.93 439.76 4697.61 446.56 5136.34 438.78 2.031 92 235.00 4751.93 439.23 4697.79 447.86 5142.60 444.90 2.031 93 234.47 4751.93 439.23 4697.79 456.97 5179.09 481.63 2.031 94 235.00 4751.93 437.13 4698.49 456.24 5179.74 481.63 2.031 95 234.47 4751.93 438.71 4697.96 459.85 5191.39 493.88 2.031 96 234.47 4751.93 440.81 4697.35 451.32 5154.37 457.14 2.031 97 233.95 4751.94 440.81 4697.35 462.00 5196.90 500.00 2.031 98 235.00 4751.93 437.66 4698.31 453.35 5167.44 469.39 2.031 99 235.00 4751.93 438.71 4697.96 449.16 5148.86 451.02 2.031 Critical Failure Surface (circle 1) Intersects: XL: 235.00 YL: Centre: XC: 463.14 YC: Generated failure surface: (20 points) 235.00 4733.16 286.59 4715.04 340.43 4703.05 4751.93 4729.06 4712.14 245.11 297.20 351.41 4751.93 5196.85 4746.89 4725.19 4709.49 XR: 440.81 YR: 4697.35 Radius: R: 500.00 255.32 307.90 362.45 4742.08 4721.56 4707.09 265.65 318.67 373.53 4737.51 4718.18 4704.95 276.07 329.52 384.67 395.84 4697.35 4701.40 407.04 4700.01 418.28 4698.87 429.54 4697.98 440.81 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 235.00 5.90 26.5 4.88 5.45 1 50.00 25.0 590.45 0.00 97.46 1.00 2 239.88 19.42 26.5 5.23 5.84 2 10.00 35.0 2043.72 0.00 331.36 0.95 3 245.11 31.71 25.2 5.11 5.65 2 10.00 35.0 3462.38 0.00 580.75 0.95 4 250.22 43.92 25.2 5.11 5.65 2 10.00 35.0 4868.27 0.00 817.37 0.95 5 255.32 66.01 23.9 5.95 6.50 2 10.00 35.0 7380.10 0.00 1074.10 0.95 6 261.27 39.23 23.9 3.00 3.28 6 0.00 45.0 3923.14 0.00 1072.57 0.90 7 264.27 19.35 23.9 1.38 1.51 2 10.00 35.0 2176.75 0.00 1367.75 0.95 8 265.65 80.42 22.6 5.21 5.65 2 10.00 35.0 9064.67 0.00 1518.07 0.95 9 270.86 91.68 22.6 5.21 5.65 2 10.00 35.0 10360.18 0.00 1735.28 0.95 10 276.07 24.55 21.3 1.30 1.39 2 10.00 35.0 2778.15 0.00 1884.19 0.95 11 277.37 130.03 21.3 6.73 7.22 2 10.00 35.0 14836.12 0.00 1940.31 0.95 12 284.10 48.70 21.3 2.49 2.68 2 10.00 35.0 5600.42 0.00 1977.88 0.95 13 286.59 104.48 20.0 5.30 5.65 2 10.00 35.0 12015.17 0.00 2009.44 0.95 14 291.90 105.36 20.0 5.30 5.65 2 10.00 35.0 12116.15 0.00 2026.40 0.95 15 297.20 106.72 18.7 5.35 5.65 2 10.00 35.0 12273.25 0.00 2052.48 0.94 16 302.55 106.89 18.7 5.35 5.65 2 10.00 35.0 12292.69 0.00 2055.80 0.94 17 307.90 107.49 17.4 5.39 5.65 2 10.00 35.0 12361.37 0.00 2068.20 0.95 18 313.28 106.93 17.4 5.39 5.65 2 10.00 35.0 12297.48 0.00 2057.51 0.95 19 0.95 20 0.95 21 0.95 22 0.95 23 0.95 24 0.95 25 0.95 26 0.95 27 0.95 28 0.95 29 0.96 30 0.96 31 0.96 32 0.96 33 0.97 34 0.97 35 0.97 36 0.97 37 0.98 38 0.98 39 0.98 40 0.98 318.67 106.74 16.1 5.42 5.65 2 10.00 35.0 12275.35 324.09 105.45 16.1 5.42 5.65 2 10.00 35.0 12127.03 329.52 104.45 14.9 5.46 5.65 2 10.00 35.0 12012.28 334.98 102.43 14.9 5.46 5.65 2 10.00 35.0 11779.05 340.43 100.60 13.6 5.49 5.65 2 10.00 35.0 11569.20 345.92 97.83 13.6 5.49 5.65 2 10.00 35.0 11249.88 351.41 95.17 12.3 5.52 5.65 2 10.00 35.0 10944.88 356.93 91.65 12.3 5.52 5.65 2 10.00 35.0 10539.37 362.45 88.15 11.0 5.54 5.65 2 10.00 35.0 10137.63 367.99 83.87 11.0 5.54 5.65 2 10.00 35.0 9644.94 373.53 79.54 9.7 5.57 5.65 2 10.00 35.0 9147.13 379.10 74.50 9.7 5.57 5.65 2 10.00 35.0 8567.03 384.67 69.33 8.4 5.59 5.65 2 10.00 35.0 7973.27 390.25 63.53 8.4 5.59 5.65 2 10.00 35.0 7305.82 395.84 57.54 7.1 5.60 5.65 2 10.00 35.0 6616.68 401.44 50.97 7.1 5.60 5.65 2 10.00 35.0 5861.53 407.04 44.15 5.8 5.62 5.65 2 10.00 35.0 5077.67 412.66 36.84 5.8 5.62 5.65 2 10.00 35.0 4236.07 418.28 29.21 4.5 5.63 5.65 2 10.00 35.0 3359.67 423.91 21.14 4.5 5.63 5.65 2 10.00 35.0 2431.64 429.54 12.49 3.2 5.48 5.49 2 10.00 35.0 1436.79 435.02 4.15 3.2 5.79 5.80 2 10.00 35.0 477.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2055.76 2030.91 2014.56 1975.48 1944.10 1890.46 1843.81 1775.40 1712.93 1629.59 1550.93 1452.53 1357.35 1243.66 1131.50 1002.29 872.73 727.98 580.62 420.15 256.92 80.54 X -S Area: 2758.55 Path Length: 214.57 X -S Weight: 315210.72 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS3-Mining.gmf Processed: 29 Feb 2024 14:00:16 DATA: Analysis 1 - SS -3 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (11 points) Material beneath: 1 - Overburden/Clay 0.00 4759.00 230.00 4758.24 297.80 Profile: 2 274.96 Profile: 3 0.00 Profile: 4 277.96 Profile: 5 0.00 4700.00 4760.00 145.50 4760.00 170.00 4759.01 235.90 4758.96 274.96 4760.00 199.95 4758.36 277.96 4756.00 (2 points) Material beneath: 6 Slurry Wall 4758.36 277.96 4758.36 (2 points) Material beneath: 2 - Sand and Gravel 4756.00 274.96 4756.00 (3 points) Material beneath: 2 - Sand and Gravel 4756.00 297.80 4756.00 467.81 4699.33 (5 points) Material beneath: 5 - Stable Sandstone Bedrock 4699.13 78.84 4699.13 276.47 4699.15 Slope Surface (13 points) 0.00 4760.00 4759.00 230.00 4759.01 4758.24 297.80 4756.00 Phreatic Surface (5 points) 0.00 4700.00 Failure Surface 4739.50 145.50 235.90 467.81 4760.00 4758.96 4699.33 274.96 4739.50 170.00 274.96 600.00 4760.00 4758.36 4700.00 277.96 4699.33 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Variable Restraints 235.90 433.76 Parameter descriptor: Range of variation: Trial positions within range: YL: YC: 4758.96 5047.67 XR: XL XR R 10.00 10.00 300.00 20 20 50 RESULTS: Analysis 1 - SS -3 - Mining Slope - Static 467.81 YR: Radius: R: 4759.69 219.13 4758.36 291.07 467.81 4699.33 199.95 4759.69 277.96 4758.36 467.81 4699.33 4699.33 350.00 600.00 219.13 291.07 600.00 Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.702 Analysis Summary There were: 18792 successful analyses from a total of 20001 trial failure surfaces 1209 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.61 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 240.90 4758.88 468.60 4699.33 477.70 5199.25 500.00 2.609 <-- Critical Surface 2 240.90 4758.88 468.07 4699.33 477.73 5199.24 500.00 2.609 3 240.90 4758.88 468.60 4699.33 476.11 5193.15 493.88 2.610 4 240.90 4758.88 468.07 4699.33 476.13 5193.14 493.88 2.610 5 240.90 4758.88 467.55 4699.42 477.58 5199.32 500.00 2.610 6 240.90 4758.88 468.60 4699.33 474.51 5187.05 487.76 2.611 7 240.90 4758.88 468.07 4699.33 474.53 5187.04 487.76 2.611 8 240.90 4758.88 467.55 4699.42 475.98 5193.22 493.88 2.611 9 240.90 4758.88 468.60 4699.33 472.92 5180.95 481.63 2.612 10 240.90 4758.88 467.02 4699.59 477.26 5199.49 500.00 2.612 11 240.90 4758.88 467.55 4699.42 474.38 5187.12 487.76 2.612 12 240.90 4758.88 468.07 4699.33 472.93 5180.94 481.63 2.612 13 240.37 4758.89 468.07 4699.33 477.20 5199.25 500.00 2.613 14 240.90 4758.88 468.60 4699.33 471.32 5174.84 475.51 2.613 15 240.90 4758.88 467.02 4699.59 475.66 5193.40 493.88 2.613 16 240.90 4758.88 467.55 4699.42 472.78 5181.02 481.63 2.614 17 240.90 4758.88 468.07 4699.33 471.33 5174.83 475.51 2.614 18 240.37 4758.89 467.55 4699.42 477.05 5199.33 500.00 2.614 19 240.37 4758.89 468.07 4699.33 475.60 5193.15 493.88 2.614 20 240.90 4758.88 467.02 4699.59 474.07 5187.30 487.76 2.614 21 240.90 4758.88 466.49 4699.77 476.94 5199.66 500.00 2.614 22 240.90 4758.88 468.60 4699.33 469.72 5168.72 469.39 2.615 23 240.90 4758.88 467.55 4699.42 471.18 5174.91 475.51 2.615 24 240.37 4758.89 467.55 4699.42 475.45 5193.23 493.88 2.615 25 240.90 4758.88 468.07 4699.33 469.73 5168.72 469.39 2.615 26 240.37 4758.89 468.07 4699.33 474.01 5187.05 487.76 2.615 27 240.90 4758.88 466.49 4699.77 475.35 5193.57 493.88 2.615 28 240.90 4758.88 467.02 4699.59 472.47 5181.20 481.63 2.615 29 240.37 4758.89 467.02 4699.59 476.73 5199.50 500.00 2.616 30 240.37 4758.89 467.55 4699.42 473.86 5187.13 487.76 2.616 31 240.90 4758.88 468.60 4699.33 468.12 5162.60 463.27 2.616 32 240.37 4758.89 468.07 4699.33 472.41 5180.94 481.63 2.616 33 240.37 4758.89 468.60 4699.33 472.40 5180.95 481.63 2.616 34 240.90 4758.88 467.55 4699.42 469.57 5168.80 469.39 2.616 35 240.90 4758.88 468.07 4699.33 468.12 5162.60 463.27 2.616 36 240.90 4758.88 466.49 4699.77 473.75 5187.47 487.76 2.616 37 240.90 4758.88 465.97 4699.94 476.62 5199.83 500.00 2.616 38 240.37 4758.89 467.02 4699.59 475.14 5193.40 493.88 2.616 39 240.90 4758.88 467.02 4699.59 470.86 5175.09 475.51 2.617 40 240.37 4758.89 467.55 4699.42 472.26 5181.03 481.63 2.617 41 240.37 4758.89 468.07 4699.33 470.81 5174.83 475.51 2.617 42 240.37 4758.89 468.60 4699.33 470.80 5174.84 475.51 2.617 43 240.90 4758.88 464.92 4700.29 474.39 5194.08 493.88 2.617 44 240.90 4758.88 465.44 4700.12 471.52 5181.71 481.63 2.617 45 240.37 4758.89 468.60 4699.33 477.17 5199.26 500.00 2.617 46 240.90 4758.88 468.60 4699.33 466.52 5156.47 457.14 2.617 47 240.90 4758.88 467.55 4699.42 467.97 5162.68 463.27 2.617 48 240.37 4758.89 467.02 4699.59 473.54 5187.30 487.76 2.617 49 240.37 4758.89 466.49 4699.77 476.41 5199.67 500.00 2.617 50 240.90 4758.88 465.97 4699.94 475.03 5193.74 493.88 2.617 51 240.90 4758.88 466.49 4699.77 472.15 5181.37 481.63 2.617 52 240.90 4758.88 465.97 4699.94 468.63 5169.32 469.39 2.618 53 240.90 4758.88 468.07 4699.33 466.52 5156.47 457.14 2.618 54 240.37 4758.89 467.55 4699.42 470.66 5174.92 475.51 2.618 55 240.90 4758.88 467.02 4699.59 469.26 5168.98 469.39 2.618 56 240.37 4758.89 468.07 4699.33 469.21 5168.72 469.39 2.618 57 240.90 4758.88 464.92 4700.29 472.80 5187.99 487.76 2.618 58 240.37 4758.89 468.60 4699.33 469.21 5168.72 469.39 2.618 59 240.90 4758.88 464.39 4700.47 475.66 5200.34 500.00 2.618 60 240.90 4758.88 465.44 4700.12 469.92 5175.61 475.51 2.618 61 240.37 4758.89 468.60 4699.33 475.58 5193.16 493.88 2.618 62 240.37 4758.89 466.49 4699.77 474.82 5193.58 493.88 2.618 63 240.90 4758.88 466.49 4699.77 465.74 5156.91 457.14 2.618 64 240.37 4758.89 467.02 4699.59 471.94 5181.20 481.63 2.618 65 240.90 4758.88 465.97 4699.94 473.43 5187.64 487.76 2.618 66 240.90 4758.88 465.44 4700.12 476.30 5200.00 500.00 2.618 67 240.90 4758.88 466.49 4699.77 470.55 5175.26 475.51 2.619 68 240.90 4758.88 465.97 4699.94 467.03 5163.21 463.27 2.619 69 240.90 4758.88 467.55 4699.42 466.36 5156.56 457.14 2.619 70 240.90 4758.88 468.60 4699.33 464.91 5150.34 451.02 2.619 71 240.37 4758.89 467.55 4699.42 469.06 5168.80 469.39 2.619 72 240.90 4758.88 464.92 4700.29 471.20 5181.89 481.63 2.619 73 240.90 4758.88 464.39 4700.47 474.07 5194.25 493.88 2.619 74 240.37 4758.89 466.49 4699.77 473.22 5187.48 487.76 2.619 75 240.37 4758.89 465.97 4699.94 476.09 5199.84 500.00 2.619 76 240.90 4758.88 468.07 4699.33 464.91 5150.34 451.02 2.619 77 240.37 4758.89 468.60 4699.33 467.61 5162.60 463.27 2.619 78 240.37 4758.89 468.07 4699.33 467.61 5162.60 463.27 2.619 79 240.90 4758.88 465.44 4700.12 468.32 5169.50 469.39 2.619 80 240.37 4758.89 468.60 4699.33 473.99 5187.06 487.76 2.619 81 240.90 4758.88 467.02 4699.59 467.66 5162.86 463.27 2.619 82 240.90 4758.88 467.55 4699.42 461.53 5138.15 438.78 2.619 83 239.85 4758.90 468.07 4699.33 476.67 5199.26 500.00 2.619 84 240.90 4758.88 467.02 4699.59 462.84 5144.47 444.90 2.619 85 240.37 4758.89 467.02 4699.59 470.35 5175.09 475.51 2.619 86 239.85 4758.90 468.60 4699.33 476.65 5199.27 500.00 2.619 87 240.90 4758.88 465.44 4700.12 474.71 5193.91 493.88 2.619 88 240.90 4758.88 465.97 4699.94 471.83 5181.54 481.63 2.619 89 240.90 4758.88 466.49 4699.77 464.14 5150.78 451.02 2.619 90 240.90 4758.88 464.39 4700.47 472.48 5188.16 487.76 2.620 91 240.90 4758.88 464.92 4700.29 469.60 5175.78 475.51 2.620 92 240.90 4758.88 465.97 4699.94 465.43 5157.09 457.14 2.620 93 240.90 4758.88 466.49 4699.77 468.95 5169.15 469.39 2.620 94 240.90 4758.88 463.86 4700.65 475.34 5200.51 500.00 2.620 95 240.37 4758.89 465.97 4699.94 474.50 5193.75 493.88 2.620 96 240.37 4758.89 467.55 4699.42 467.46 5162.68 463.27 2.620 97 240.37 4758.89 466.49 4699.77 471.63 5181.37 481.63 2.620 98 239.85 4758.90 467.55 4699.42 476.52 5199.34 500.00 2.620 99 239.85 4758.90 468.07 4699.33 475.08 5193.16 493.88 2.620 Critical Failure Surface (circle 1) Intersects: XL: 240.90 YL: 4758.88 Centre: XC: 477.70 YC: 5199.25 Generated failure surface: (20 points) 240.90 4758.88 251.99 4753.10 4737.44 297.67 4732.79 309.39 4728.43 4717.14 357.25 4713.98 369.43 4711.12 4704.37 418.72 4702.74 431.15 4701.42 4699.33 XR: 468.60 YR: 4699.33 Radius: R: 500.00 263.21 321.22 381.67 443.62 4747.59 4724.37 4708.56 4700.41 Slice Geometry and Properties - Critical Failure Surface (circle 1, 39 slices) 274.58 333.14 393.97 456.10 4742.37 4720.60 4706.31 4699.72 286.06 345.16 406.32 468.60 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 240.90 7.73 27.6 5.53 6.23 1 50.00 25.0 773.36 0.00 118.86 1.03 2 246.43 23.38 27.6 5.56 6.27 2 10.00 35.0 2459.23 0.00 386.23 0.99 3 251.99 39.00 26.1 5.61 6.25 2 10.00 35.0 4260.12 0.00 668.98 0.98 4 257.60 53.96 26.1 5.61 6.25 2 10.00 35.0 5988.18 0.00 941.01 0.98 5 263.21 69.35 24.7 5.68 6.25 2 10.00 35.0 7762.55 0.00 1214.86 0.98 6 268.89 83.69 24.7 5.68 6.25 2 10.00 35.0 9418.52 0.00 1474.33 0.98 7 274.58 56.58 23.3 3.38 3.68 6 0.00 45.0 5658.10 0.00 1435.16 0.93 8 277.96 74.12 23.3 4.05 4.41 2 10.00 35.0 8382.03 0.00 1853.34 0.98 9 282.01 81.03 23.3 4.05 4.41 2 10.00 35.0 9178.32 0.00 2029.55 0.98 10 286.06 109.29 21.8 5.01 5.39 2 10.00 35.0 12398.94 0.00 2234.90 0.97 11 291.07 152.05 21.8 6.60 7.11 2 10.00 35.0 17373.08 0.00 2374.92 0.97 12 297.67 136.95 20.4 5.86 6.25 2 10.00 35.0 15748.75 0.00 2442.25 0.97 13 303.53 138.26 20.4 5.86 6.25 2 10.00 35.0 15900.13 0.00 2465.73 0.97 14 309.39 140.34 19.0 5.91 6.25 2 10.00 35.0 16139.49 0.00 2497.91 0.97 15 315.31 140.70 19.0 5.91 6.25 2 10.00 35.0 16180.08 0.00 2504.18 0.97 16 321.22 141.73 17.5 5.96 6.25 2 10.00 35.0 16298.54 0.00 2519.07 0.97 17 327.18 141.10 17.5 5.96 6.25 2 10.00 35.0 16226.90 0.00 2507.99 0.97 18 333.14 141.04 16.1 6.01 6.25 2 10.00 35.0 16220.04 0.00 2505.10 0.97 19 339.15 139.43 16.1 6.01 6.25 2 10.00 35.0 16033.92 0.00 2476.28 0.97 20 345.16 138.26 14.7 6.05 6.25 2 10.00 35.0 15899.65 0.00 2455.26 0.97 21 351.21 135.63 14.7 6.05 6.25 2 10.00 35.0 15597.36 0.00 2408.61 0.97 22 357.25 133.33 13.2 6.09 6.25 2 10.00 35.0 15333.23 0.00 2368.98 0.97 23 363.34 129.69 13.2 6.09 6.25 2 10.00 35.0 14913.88 0.00 2304.17 0.97 24 369.43 126.24 11.8 6.12 6.25 2 10.00 35.0 14517.74 0.00 2245.48 0.97 25 375.55 121.58 11.8 6.12 6.25 2 10.00 35.0 13981.28 0.00 2162.52 0.97 26 381.67 116.98 10.4 6.15 6.25 2 10.00 35.0 13452.84 0.00 2084.42 0.97 27 387.82 111.28 10.4 6.15 6.25 2 10.00 35.0 12797.64 0.00 1982.88 0.97 28 393.97 105.54 8.9 6.18 6.25 2 10.00 35.0 12136.64 0.00 1884.97 0.97 29 400.14 98.81 8.9 6.18 6.25 2 10.00 35.0 11363.29 0.00 1764.78 0.97 30 406.32 91.91 7.5 6.20 6.25 2 10.00 35.0 10569.78 0.00 1646.58 0.97 31 412.52 84.16 7.5 6.20 6.25 2 10.00 35.0 9678.38 0.00 1507.67 0.97 32 418.72 76.13 6.1 6.22 6.25 2 10.00 35.0 8755.02 0.00 1368.78 0.98 33 424.94 67.35 6.1 6.22 6.25 2 10.00 35.0 7745.01 0.00 1210.85 0.98 34 431.15 58.20 4.6 6.23 6.25 2 10.00 35.0 6693.09 0.00 1050.89 0.98 35 437.38 48.40 4.6 6.23 6.25 2 10.00 35.0 5566.29 0.00 873.92 0.98 36 443.62 38.17 3.2 6.24 6.25 2 10.00 35.0 4389.30 0.00 692.56 0.99 37 449.86 27.35 3.2 6.24 6.25 2 10.00 35.0 3145.62 0.00 496.27 0.99 38 456.10 15.31 1.8 5.81 5.81 2 10.00 35.0 1761.07 0.00 300.63 0.99 39 461.91 4.99 1.8 6.69 6.69 2 10.00 35.0 573.66 0.00 84.93 0.99 X -S Area: 3599.06 Path Length: 237.58 X -S Weight: 411271.09 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS3-Mining-Pseudo Static.gmf Processed: 29 Feb 2024 14:03:04 DATA: Analysis 1 - SS -3 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (11 points) 0.00 4760.00 4759.00 230.00 4759.01 4758.24 297.80 4756.00 Profile: 2 (2 points) 274.96 4758.36 Profile: 3 (2 points) 0.00 4756.00 Profile: 4 (3 points) 277.96 4756.00 Profile: 5 (5 points) 0.00 4699.13 4700.00 Slope Surface (13 points) 4760.00 4759.01 4756.00 0.00 4759.00 230.00 4758.24 297.80 Material beneath: 1 - Overburden/Clay 145.50 4760.00 170.00 235.90 4758.96 4760.00 199.95 274.96 4758.36 Material beneath: 6 Slurry Wall 277.96 4758.36 Material beneath: 2 - Sand and Gravel 274.96 4756.00 Material beneath: 2 - Sand and Gravel 297.80 4756.00 467.81 4699.33 Material beneath: 5 - Stable Sandstone Bedrock 78.84 4699.13 276.47 4699.15 Phreatic Surface (5 points) 0.00 4700.00 Failure Surface 4739.50 145.50 235.90 467.81 4760.00 4758.96 4699.33 274.96 4739.50 170.00 4760.00 274.96 4758.36 600.00 4700.00 277.96 4699.33 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Earthquake Force 235.90 433.76 YL: YC: 4758.96 5047.67 Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR: XR R 10.00 300.00 20 50 467.81 YR: Radius: R: 4759.69 219.13 277.96 4758.36 467.81 4699.33 199.95 4759.69 277.96 4758.36 467.81 4699.33 4699.33 350.00 291.07 600.00 219.13 291.07 600.00 RESULTS: Analysis 1 - SS -3 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.928 Analysis Summary There were: 18792 successful analyses from a total of 20001 trial failure surfaces 1209 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.05 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 240.90 4758.88 468.60 4699.33 477.70 5199.25 500.00 2.050 <-- Critical Surface 2 240.90 4758.88 468.07 4699.33 477.73 5199.24 500.00 2.050 3 240.90 4758.88 467.55 4699.42 477.58 5199.32 500.00 2.051 4 240.90 4758.88 468.60 4699.33 476.11 5193.15 493.88 2.051 5 240.90 4758.88 468.07 4699.33 476.13 5193.14 493.88 2.051 6 240.90 4758.88 467.55 4699.42 475.98 5193.22 493.88 2.052 7 240.90 4758.88 468.60 4699.33 474.51 5187.05 487.76 2.052 8 240.90 4758.88 468.07 4699.33 474.53 5187.04 487.76 2.052 9 240.90 4758.88 467.02 4699.59 477.26 5199.49 500.00 2.052 10 240.37 4758.89 468.07 4699.33 477.20 5199.25 500.00 2.053 11 240.90 4758.88 467.55 4699.42 474.38 5187.12 487.76 2.053 12 240.90 4758.88 468.60 4699.33 472.92 5180.95 481.63 2.053 13 240.37 4758.89 467.55 4699.42 477.05 5199.33 500.00 2.053 14 240.90 4758.88 467.02 4699.59 475.66 5193.40 493.88 2.053 15 240.90 4758.88 468.07 4699.33 472.93 5180.94 481.63 2.053 16 240.37 4758.89 468.07 4699.33 475.60 5193.15 493.88 2.053 17 240.90 4758.88 466.49 4699.77 476.94 5199.66 500.00 2.054 18 240.90 4758.88 467.55 4699.42 472.78 5181.02 481.63 2.054 19 240.37 4758.89 467.55 4699.42 475.45 5193.23 493.88 2.054 20 240.90 4758.88 468.60 4699.33 471.32 5174.84 475.51 2.054 21 240.90 4758.88 467.02 4699.59 474.07 5187.30 487.76 2.054 22 240.37 4758.89 467.02 4699.59 476.73 5199.50 500.00 2.054 23 240.90 4758.88 468.07 4699.33 471.33 5174.83 475.51 2.054 24 240.37 4758.89 468.07 4699.33 474.01 5187.05 487.76 2.054 25 240.90 4758.88 466.49 4699.77 475.35 5193.57 493.88 2.054 26 240.37 4758.89 467.55 4699.42 473.86 5187.13 487.76 2.055 27 240.90 4758.88 465.97 4699.94 476.62 5199.83 500.00 2.055 28 240.37 4758.89 467.02 4699.59 475.14 5193.40 493.88 2.055 29 240.90 4758.88 467.55 4699.42 471.18 5174.91 475.51 2.055 30 240.90 4758.88 467.02 4699.59 472.47 5181.20 481.63 2.055 31 240.90 4758.88 464.92 4700.29 474.39 5194.08 493.88 2.055 32 240.90 4758.88 468.60 4699.33 469.72 5168.72 469.39 2.055 33 240.37 4758.89 466.49 4699.77 476.41 5199.67 500.00 2.055 34 240.37 4758.89 468.07 4699.33 472.41 5180.94 481.63 2.055 35 240.37 4758.89 468.60 4699.33 472.40 5180.95 481.63 2.055 36 240.90 4758.88 466.49 4699.77 473.75 5187.47 487.76 2.055 37 240.90 4758.88 468.07 4699.33 469.73 5168.72 469.39 2.055 38 240.90 4758.88 464.39 4700.47 475.66 5200.34 500.00 2.055 39 240.37 4758.89 468.60 4699.33 477.17 5199.26 500.00 2.056 40 240.37 4758.89 467.55 4699.42 472.26 5181.03 481.63 2.056 41 240.90 4758.88 465.97 4699.94 475.03 5193.74 493.88 2.056 42 240.37 4758.89 467.02 4699.59 473.54 5187.30 487.76 2.056 43 240.90 4758.88 465.44 4700.12 471.52 5181.71 481.63 2.056 44 240.90 4758.88 464.92 4700.29 472.80 5187.99 487.76 2.056 45 240.37 4758.89 466.49 4699.77 474.82 5193.58 493.88 2.056 46 240.90 4758.88 467.55 4699.42 469.57 5168.80 469.39 2.056 47 240.90 4758.88 465.44 4700.12 476.30 5200.00 500.00 2.056 48 240.37 4758.89 468.07 4699.33 470.81 5174.83 475.51 2.056 49 240.37 4758.89 468.60 4699.33 470.80 5174.84 475.51 2.056 50 240.90 4758.88 464.39 4700.47 474.07 5194.25 493.88 2.056 51 240.90 4758.88 467.02 4699.59 470.86 5175.09 475.51 2.056 52 240.37 4758.89 465.97 4699.94 476.09 5199.84 500.00 2.056 53 240.90 4758.88 468.60 4699.33 468.12 5162.60 463.27 2.056 54 240.90 4758.88 466.49 4699.77 472.15 5181.37 481.63 2.056 55 240.37 4758.89 468.60 4699.33 475.58 5193.16 493.88 2.056 56 240.90 4758.88 463.86 4700.65 475.34 5200.51 500.00 2.057 57 239.85 4758.90 468.07 4699.33 476.67 5199.26 500.00 2.057 58 240.90 4758.88 468.07 4699.33 468.12 5162.60 463.27 2.057 59 239.85 4758.90 468.60 4699.33 476.65 5199.27 500.00 2.057 60 240.37 4758.89 467.55 4699.42 470.66 5174.92 475.51 2.057 61 240.90 4758.88 465.97 4699.94 473.43 5187.64 487.76 2.057 62 240.90 4758.88 465.97 4699.94 468.63 5169.32 469.39 2.057 63 240.37 4758.89 467.02 4699.59 471.94 5181.20 481.63 2.057 64 240.90 4758.88 465.44 4700.12 469.92 5175.61 475.51 2.057 65 240.37 4758.89 466.49 4699.77 473.22 5187.48 487.76 2.057 66 240.90 4758.88 464.92 4700.29 471.20 5181.89 481.63 2.057 67 240.90 4758.88 464.39 4700.47 472.48 5188.16 487.76 2.057 68 240.90 4758.88 465.44 4700.12 474.71 5193.91 493.88 2.057 69 239.85 4758.90 467.55 4699.42 476.52 5199.34 500.00 2.057 70 240.37 4758.89 465.97 4699.94 474.50 5193.75 493.88 2.057 71 240.37 4758.89 468.07 4699.33 469.21 5168.72 469.39 2.057 72 240.37 4758.89 468.60 4699.33 469.21 5168.72 469.39 2.057 73 240.90 4758.88 463.86 4700.65 473.75 5194.42 493.88 2.057 74 240.37 4758.89 465.44 4700.12 475.77 5200.01 500.00 2.057 75 240.90 4758.88 467.55 4699.42 467.97 5162.68 463.27 2.057 76 240.90 4758.88 467.02 4699.59 469.26 5168.98 469.39 2.057 77 239.85 4758.90 468.07 4699.33 475.08 5193.16 493.88 2.057 78 239.85 4758.90 468.60 4699.33 475.06 5193.17 493.88 2.057 79 240.37 4758.89 468.60 4699.33 473.99 5187.06 487.76 2.057 80 240.90 4758.88 464.92 4700.29 475.98 5200.17 500.00 2.057 81 240.90 4758.88 466.49 4699.77 470.55 5175.26 475.51 2.057 82 240.90 4758.88 463.34 4700.82 475.02 5200.68 500.00 2.058 83 240.90 4758.88 468.60 4699.33 466.52 5156.47 457.14 2.058 84 240.37 4758.89 467.02 4699.59 470.35 5175.09 475.51 2.058 85 240.37 4758.89 467.55 4699.42 469.06 5168.80 469.39 2.058 86 240.90 4758.88 465.97 4699.94 471.83 5181.54 481.63 2.058 87 240.90 4758.88 465.44 4700.12 468.32 5169.50 469.39 2.058 88 240.37 4758.89 466.49 4699.77 471.63 5181.37 481.63 2.058 89 240.90 4758.88 465.97 4699.94 467.03 5163.21 463.27 2.058 90 240.90 4758.88 464.92 4700.29 469.60 5175.78 475.51 2.058 91 239.85 4758.90 467.55 4699.42 474.93 5193.24 493.88 2.058 92 240.90 4758.88 466.49 4699.77 465.74 5156.91 457.14 2.058 93 240.37 4758.89 465.97 4699.94 472.90 5187.65 487.76 2.058 94 240.90 4758.88 464.39 4700.47 470.88 5182.06 481.63 2.058 95 240.90 4758.88 468.07 4699.33 466.52 5156.47 457.14 2.058 96 240.90 4758.88 465.44 4700.12 473.11 5187.81 487.76 2.058 97 239.85 4758.90 467.02 4699.59 476.20 5199.51 500.00 2.058 98 240.37 4758.89 465.44 4700.12 474.18 5193.92 493.88 2.058 99 240.90 4758.88 463.86 4700.65 472.16 5188.33 487.76 2.058 Critical Failure Surface (circle 1) Intersects: XL: 240.90 YL: Centre: XC: 477.70 YC: Generated failure surface: (20 points) 240.90 4758 88 251.99 4737.44 297.67 4732.79 309.39 4717.14 357.25 4713.98 369.43 4704.37 4758.88 5199.25 4753.10 4728.43 4711.12 XR: 468.60 YR: 4699.33 Radius: R: 500.00 263.21 321.22 381.67 4747.59 4724.37 4708.56 274.58 333.14 393.97 4742.37 4720.60 4706.31 286.06 345.16 406.32 418.72 4699.33 4702.74 431.15 4701.42 443.62 4700.41 456.10 4699.72 468.60 Slice Geometry and Properties - Critical Failure Surface (circle 1, 39 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 240.90 7.73 27.6 5.53 6.23 1 50.00 25.0 773.36 0.00 113.72 1.01 2 246.43 23.38 27.6 5.56 6.27 2 10.00 35.0 2459.23 0.00 373.25 0.96 3 251.99 39.00 26.1 5.61 6.25 2 10.00 35.0 4260.12 0.00 647.98 0.95 4 257.60 53.96 26.1 5.61 6.25 2 10.00 35.0 5988.18 0.00 911.65 0.95 5 263.21 69.35 24.7 5.68 6.25 2 10.00 35.0 7762.55 0.00 1179.13 0.95 6 268.89 83.69 24.7 5.68 6.25 2 10.00 35.0 9418.52 0.00 1431.05 0.95 7 274.58 56.58 23.3 3.38 3.68 6 0.00 45.0 5658.10 0.00 1381.88 0.90 8 277.96 74.12 23.3 4.05 4.41 2 10.00 35.0 8382.03 0.00 1802.13 0.95 9 282.01 81.03 23.3 4.05 4.41 2 10.00 35.0 9178.32 0.00 1973.50 0.95 10 286.06 109.29 21.8 5.01 5.39 2 10.00 35.0 12398.94 0.00 2176.93 0.95 11 291.07 152.05 21.8 6.60 7.11 2 10.00 35.0 17373.08 0.00 2313.34 0.95 12 297.67 136.95 20.4 5.86 6.25 2 10.00 35.0 15748.75 0.00 2382.96 0.95 13 303.53 138.26 20.4 5.86 6.25 2 10.00 35.0 15900.13 0.00 2405.88 0.95 14 309.39 140.34 19.0 5.91 6.25 2 10.00 35.0 16139.49 0.00 2441.40 0.95 15 315.31 140.70 19.0 5.91 6.25 2 10.00 35.0 16180.08 0.00 2447.53 0.95 16 321.22 141.73 17.5 5.96 6.25 2 10.00 35.0 16298.54 0.00 2466.24 0.95 17 327.18 141.10 17.5 5.96 6.25 2 10.00 35.0 16226.90 0.00 2455.39 0.95 18 333.14 141.04 16.1 6.01 6.25 2 10.00 35.0 16220.04 0.00 2456.69 0.95 19 339.15 139.43 16.1 6.01 6.25 2 10.00 35.0 16033.92 0.00 2428.42 0.95 20 345.16 138.26 14.7 6.05 6.25 2 10.00 35.0 15899.65 0.00 2411.87 0.95 21 351.21 135.63 14.7 6.05 6.25 2 10.00 35.0 15597.36 0.00 2366.05 0.95 22 357.25 133.33 13.2 6.09 6.25 2 10.00 35.0 15333.23 0.00 2331.04 0.95 23 363.34 129.69 13.2 6.09 6.25 2 10.00 35.0 14913.88 0.00 2267.26 0.95 24 369.43 126.24 11.8 6.12 6.25 2 10.00 35.0 14517.74 0.00 2213.25 0.95 25 375.55 121.58 11.8 6.12 6.25 2 10.00 35.0 13981.28 0.00 2131.48 0.95 26 381.67 116.98 10.4 6.15 6.25 2 10.00 35.0 13452.84 0.00 2058.00 0.96 27 387.82 111.28 10.4 6.15 6.25 2 10.00 35.0 12797.64 0.00 1957.74 0.96 28 393.97 105.54 8.9 6.18 6.25 2 10.00 35.0 12136.64 0.00 1864.26 0.96 29 400.14 98.81 8.9 6.18 6.25 2 10.00 35.0 11363.29 0.00 1745.37 0.96 30 406.32 91.91 7.5 6.20 6.25 2 10.00 35.0 10569.78 0.00 1631.29 0.97 31 412.52 84.16 7.5 6.20 6.25 2 10.00 35.0 9678.38 0.00 1493.66 0.97 32 418.72 76.13 6.1 6.22 6.25 2 10.00 35.0 8755.02 0.00 1358.41 0.97 33 424.94 67.35 6.1 6.22 6.25 2 10.00 35.0 7745.01 0.00 1201.67 0.97 34 431.15 58.20 4.6 6.23 6.25 2 10.00 35.0 6693.09 0.00 1044.75 0.98 35 437.38 48.40 4.6 6.23 6.25 2 10.00 35.0 5566.29 0.00 868.80 0.98 36 443.62 38.17 3.2 6.24 6.25 2 10.00 35.0 4389.30 0.00 689.73 0.98 37 449.86 27.35 3.2 6.24 6.25 2 10.00 35.0 3145.62 0.00 494.22 0.98 38 456.10 15.31 1.8 5.81 5.81 2 10.00 35.0 1761.07 0.00 299.93 0.99 39 461.91 4.99 1.8 6.69 6.69 2 10.00 35.0 573.66 0.00 84.71 0.99 X -S Area: 3599.06 Path Length: 237.58 X -S Weight: 411271.09 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS4-Mining.gmf Processed: 29 Feb 2024 14:52:09 DATA: Analysis 1 - SS -4 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (9 points) Material beneath: 1 - Overburden/Clay 0 00 4758.73 0.91 4758.73 43.49 4758.52 97.40 4758.18 172.51 4757.38 198.50 4757.00 201.50 4757.00 216.13 4757.00 226.63 4753.50 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 198.50 4757.00 201.50 4757.00 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4753.50 198.50 4753.50 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 201.50 4753.50 226.63 4753.50 391.49 4698.54 Profile: 5 (5 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4699.82 200.00 4699.65 391.49 4698.54 453.65 4697.06 600.00 4697.00 Slope Surface (12 points) 0.00 4758.73 4757.38 198.50 4757.00 4698.54 453.65 4697.06 Phreatic Surface (6 points) 0.00 4697.06 600.00 Failure Surface 4739.50 4697.00 0.91 4758.73 201.50 4757.00 600.00 4697.00 198.50 4739.50 43.49 216.13 201.50 4758.52 97.40 4757.00 226.63 4699.65 391.49 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 97.40 YL: 4758.18 XR: 391.49 YR: Centre: XC: 349.61 YC: 5246.94 Radius: R: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 500.00 20 20 50 RESULTS: Analysis 1 - SS -4 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface 4698.54 550.00 4758.18 172.51 4753.50 391.49 4698.54 453.65 Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 4.213 Analysis Summary There were: 19979 successful analyses from a total of 20001 trial failure surfaces 22 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 3.07 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 92.40 4758.21 396.49 4698.42 294.01 4980.37 300.00 3.070 <-- Critical Surface 2 92.93 4758.21 396.49 4698.42 294.38 4980.51 300.00 3.073 3 92.40 4758.21 395.96 4698.43 293.84 4980.52 300.00 3.073 4 93.45 4758.21 396.49 4698.42 294.75 4980.64 300.00 3.075 5 92.93 4758.21 395.96 4698.43 294.22 4980.65 300.00 3.076 6 92.40 4758.21 395.44 4698.45 293.68 4980.66 300.00 3.076 7 93.98 4758.20 396.49 4698.42 295.13 4980.78 300.00 3.077 8 93.45 4758.21 395.96 4698.43 294.59 4980.79 300.00 3.078 9 92.93 4758.21 395.44 4698.45 294.06 4980.80 300.00 3.079 10 92.40 4758.21 394.91 4698.46 293.53 4980.81 300.00 3.080 11 94.51 4758.20 396.49 4698.42 295.50 4980.91 300.00 3.080 12 93.98 4758.20 395.96 4698.43 294.97 4980.92 300.00 3.081 13 93.45 4758.21 395.44 4698.45 294.43 4980.93 300.00 3.081 14 92.93 4758.21 394.91 4698.46 293.90 4980.94 300.00 3.082 15 95.03 4758.20 396.49 4698.42 295.87 4981.05 300.00 3.083 16 92.40 4758.21 394.38 4698.47 293.37 4980.95 300.00 3.083 17 94.51 4758.20 395.96 4698.43 295.34 4981.06 300.00 3.083 18 93.98 4758.20 395.44 4698.45 294.81 4981.07 300.00 3.084 19 93.45 4758.21 394.91 4698.46 294.27 4981.08 300.00 3.084 20 95.56 4758.19 396.49 4698.42 296.25 4981.18 300.00 3.085 21 92.93 4758.21 394.38 4698.47 293.74 4981.08 300.00 3.085 22 95.03 4758.20 395.96 4698.43 295.72 4981.19 300.00 3.086 23 92.40 4758.21 393.86 4698.48 293.21 4981.10 300.00 3.086 24 94.51 4758.20 395.44 4698.45 295.18 4981.20 300.00 3.086 25 93.98 4758.20 394.91 4698.46 294.65 4981.21 300.00 3.087 26 93.45 4758.21 394.38 4698.47 294.11 4981.22 300.00 3.087 27 95.56 4758.19 395.96 4698.43 296.09 4981.32 300.00 3.088 28 92.93 4758.21 393.86 4698.48 293.58 4981.23 300.00 3.089 29 95.03 4758.20 395.44 4698.45 295.56 4981.33 300.00 3.089 30 92.40 4758.21 393.33 4698.50 293.05 4981.24 300.00 3.089 31 94.51 4758.20 394.91 4698.46 295.02 4981.34 300.00 3.089 32 93.98 4758.20 394.38 4698.47 294.49 4981.35 300.00 3.090 33 93.45 4758.21 393.86 4698.48 293.96 4981.36 300.00 3.091 34 96.08 4758.19 395.96 4698.43 296.47 4981.45 300.00 3.091 35 95.56 4758.19 395.44 4698.45 295.93 4981.46 300.00 3.091 36 92.93 4758.21 393.33 4698.50 293.42 4981.37 300.00 3.092 37 96.08 4758.19 396.49 4698.42 296.62 4981.31 300.00 3.092 38 95.03 4758.20 394.91 4698.46 295.40 4981.47 300.00 3.092 39 94.51 4758.20 394.38 4698.47 294.86 4981.48 300.00 3.092 40 92.40 4758.21 392.81 4698.51 292.89 4981.38 300.00 3.092 41 93.98 4758.20 393.86 4698.48 294.33 4981.49 300.00 3.093 42 96.61 4758.19 396.49 4698.42 297.00 4981.44 300.00 3.093 43 93.45 4758.21 393.33 4698.50 293.80 4981.50 300.00 3.094 44 96.08 4758.19 395.44 4698.45 296.31 4981.60 300.00 3.094 45 95.56 4758.19 394.91 4698.46 295.77 4981.60 300.00 3.094 46 97.14 4758.18 396.49 4698.42 297.38 4981.58 300.00 3.095 47 92.93 4758.21 392.81 4698.51 293.26 4981.51 300.00 3.095 48 95.03 4758.20 394.38 4698.47 295.24 4981.62 300.00 3.095 49 94.51 4758.20 393.86 4698.48 294.71 4981.62 300.00 3.095 50 92.40 4758.21 392.28 4698.52 292.73 4981.52 300.00 3.096 51 93.98 4758.20 393.33 4698.50 294.17 4981.63 300.00 3.096 52 97.66 4758.18 396.49 4698.42 297.75 4981.71 300.00 3.096 53 96.61 4758.19 395.96 4698.43 296.84 4981.58 300.00 3.097 54 96.08 4758.19 394.91 4698.46 296.15 4981.74 300.00 3.097 55 93.45 4758.21 392.81 4698.51 293.64 4981.65 300.00 3.097 56 95.56 4758.19 394.38 4698.47 295.62 4981.75 300.00 3.097 57 95.03 4758.20 393.86 4698.48 295.08 4981.76 300.00 3.098 58 92.93 4758.21 392.28 4698.52 293.11 4981.65 300.00 3.098 59 97.14 4758.18 395.96 4698.43 297.22 4981.72 300.00 3.098 60 94.51 4758.20 393.33 4698.50 294.55 4981.77 300.00 3.099 61 98.19 4758.17 396.49 4698.42 298.12 4981.84 300.00 3.099 62 92.40 4758.21 391.75 4698.53 292.57 4981.66 300.00 3.099 63 93.98 4758.20 392.81 4698.51 294.02 4981.78 300.00 3.099 64 96.61 4758.19 394.91 4698.46 296.53 4981.87 300.00 3.099 65 97.66 4758.18 395.96 4698.43 297.59 4981.85 300.00 3.100 66 96.08 4758.19 394.38 4698.47 295.99 4981.88 300.00 3.100 67 93.45 4758.21 392.28 4698.52 293.48 4981.79 300.00 3.100 68 96.61 4758.19 395.44 4698.45 296.68 4981.73 300.00 3.100 69 95.56 4758.19 393.86 4698.48 295.46 4981.89 300.00 3.100 70 95.03 4758.20 393.33 4698.50 294.93 4981.90 300.00 3.101 71 92.93 4758.21 391.75 4698.53 292.95 4981.80 300.00 3.101 72 98.19 4758.17 395.96 4698.43 297.97 4981.98 300.00 3.102 73 98.72 4758.17 396.49 4698.42 298.50 4981.97 300.00 3.102 74 94.51 4758.20 392.81 4698.51 294.39 4981.91 300.00 3.102 75 97.14 4758.18 395.44 4698.45 297.06 4981.86 300.00 3.102 76 93.98 4758.20 392.28 4698.52 293.86 4981.92 300.00 3.102 77 98.72 4758.17 395.96 4698.43 298.34 4982.11 300.00 3.102 78 96.61 4758.19 394.38 4698.47 296.37 4982.01 300.00 3.102 79 96.08 4758.19 393.86 4698.48 295.84 4982.02 300.00 3.103 80 93.45 4758.21 391.75 4698.53 293.32 4981.93 300.00 3.103 81 97.66 4758.18 395.44 4698.45 297.44 4981.99 300.00 3.103 82 95.56 4758.19 393.33 4698.50 295.30 4982.03 300.00 3.103 83 95.03 4758.20 392.81 4698.51 294.77 4982.04 300.00 3.104 84 94.51 4758.20 392.28 4698.52 294.23 4982.05 300.00 3.105 85 98.19 4758.17 395.44 4698.45 297.81 4982.12 300.00 3.105 86 97.14 4758.18 394.91 4698.46 296.90 4982.00 300.00 3.105 87 96.61 4758.19 393.86 4698.48 296.21 4982.15 300.00 3.105 88 93.98 4758.20 391.75 4698.53 293.70 4982.06 300.00 3.106 89 96.08 4758.19 393.33 4698.50 295.68 4982.16 300.00 3.106 90 92.40 4758.21 391.23 4698.63 292.35 4981.86 300.00 3.106 91 98.72 4758.17 395.44 4698.45 298.19 4982.25 300.00 3.106 92 95.56 4758.19 392.81 4698.51 295.14 4982.17 300.00 3.107 93 97.66 4758.18 394.91 4698.46 297.28 4982.13 300.00 3.107 94 95.03 4758.20 392.28 4698.52 294.61 4982.18 300.00 3.107 95 99.24 4758.16 396.49 4698.42 298.87 4982.10 300.00 3.107 96 98.19 4758.17 394.91 4698.46 297.65 4982.26 300.00 3.107 97 97.66 4758.18 394.38 4698.47 297.12 4982.27 300.00 3.108 98 99.77 4758.15 396.49 4698.42 299.25 4982.22 300.00 3.108 99 94.51 4758.20 391.75 4698.53 294.08 4982.19 300.00 3.108 Critical Failure Surface (circle 1) Intersects: XL: 92.40 YL: Centre: XC: 294.01 YC: Generated failure surface: (20 points) 92.40 4718.31 163.18 4687.78 244.56 4680.97 329.95 4698.42 4758.21 4710.40 4684.48 4682.53 105.42 178.81 261.54 346.90 4758.21 4980.37 4747.06 4703.37 4682.13 4685.07 XR: 396.49 YR: 4698.42 Radius: R: 300.00 119.05 194.81 278.62 363.67 4736.67 4697.25 4680.77 4688.57 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test X -S Base 133.25 211.14 295.75 380.22 4727.08 4692.04 4680.38 4693.03 147.97 227.74 312.88 396.49 PoreWater Normal X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 92.40 10.63 40.6 5.00 6.58 1 50.00 25.0 1062.74 0.00 175.73 1.17 2 97.40 61.26 40.6 8.02 10.55 2 10.00 35.0 6486.94 0.00 674.70 1.10 3 105.42 146.46 37.3 9.92 12.48 2 10.00 35.0 16166.89 0.00 1386.00 1.07 4 115.34 73.74 37.3 3.71 4.66 2 10.00 35.0 8310.23 411.32 1919.81 1.07 5 119.05 167.84 34.0 7.10 8.57 2 10.00 35.0 19388.37 2793.89 2407.55 1.05 6 126.15 201.36 34.0 7.10 8.57 2 10.00 35.0 23762.23 5358.71 2981.20 1.05 7 133.25 242.03 30.8 7.36 8.57 2 10.00 35.0 28976.62 7812.85 3572.19 1.02 8 140.61 273.73 30.8 7.36 8.57 2 10.00 35.0 33115.30 10156.91 4099.77 1.02 9 147.97 313.67 27.5 7.60 8.57 2 10.00 35.0 38245.86 12386.03 4649.42 1.01 10 155.58 343.13 27.5 7.60 8.57 2 10.00 35.0 42093.95 14501.37 5128.13 1.01 11 163.18 458.50 24.2 9.33 10.23 2 10.00 35.0 56545.32 19922.13 5674.61 0.99 12 172.51 330.87 24.2 6.30 6.90 2 10.00 35.0 40966.24 14954.87 6100.84 0.99 13 178.81 540.24 20.9 9.70 10.39 2 10.00 35.0 67112.45 24614.77 6553.16 0.98 14 188.51 369.88 20.9 6.31 6.75 3 3000.00 0.0 46117.36 17297.19 6938.15 1.07 15 194.81 222.61 17.7 3.69 3.87 3 3000.00 0.0 27829.44 10345.94 7235.76 1.05 16 198.50 91.75 17.7 1.50 1.57 3 3000.00 0.0 9823.99 3310.86 6238.22 1.05 17 200.00 92.47 17.7 1.50 1.57 3 3000.00 0.0 9621.72 1400.71 6103.06 1.05 18 201.50 611.51 17.7 9.64 10.12 3 3000.00 0.0 70982.53 3815.60 7050.40 1.05 19 211.14 327.19 14.4 4.99 5.15 3 3000.00 0.0 38180.22 2627.15 7403.77 1.03 20 216.13 346.69 14.4 5.25 5.42 3 3000.00 0.0 40655.38 3199.56 7493.04 1.03 21 221.38 344.57 14.4 5.25 5.42 3 3000.00 0.0 40688.58 3644.96 7499.36 1.03 22 226.63 581.65 11.5 8.96 9.15 3 3000.00 0.0 69104.84 7054.78 7509.58 1.02 23 235.59 570.66 11.1 8.96 9.14 3 3000.00 0.0 68148.12 8019.47 7410.14 1.02 24 244.56 528.16 7.9 8.49 8.57 3 3000.00 0.0 63366.54 8279.15 7330.00 1.01 25 253.05 514.07 7.9 8.49 8.57 3 3000.00 0.0 61936.80 8878.63 7161.56 1.01 26 261.54 500.95 4.6 8.54 8.57 3 3000.00 0.0 60594.93 9347.52 7015.74 1.00 27 270.08 482.46 4.6 8.54 8.57 3 3000.00 0.0 58577.38 9686.16 6779.54 1.00 28 278.62 463.21 1.3 8.57 8.57 3 3000.00 0.0 56439.60 9894.46 6565.93 1.00 29 287.19 440.41 1.3 8.57 8.57 3 3000.00 0.0 53841.98 9971.71 6262.73 1.00 30 295.75 415.39 -2.0 8.56 8.57 3 3000.00 0.0 50946.87 9918.56 5982.51 1.00 31 304.32 388.41 -2.0 8.56 8.57 3 3000.00 0.0 47785.43 9734.19 5613.38 1.00 32 312.88 358.10 -5.2 8.53 8.57 3 3000.00 0.0 44187.59 9419.30 5268.00 1.00 33 321.41 327.14 -5.2 8.53 8.57 3 3000.00 0.0 40484.88 8973.70 4834.12 1.00 34 329.95 292.17 -8.5 8.47 8.57 3 3000.00 0.0 36261.66 8398.71 4425.21 1.01 35 338.42 257.47 -8.5 8.47 8.57 3 3000.00 0.0 32047.46 7693.24 3927.93 1.01 36 346.90 218.60 -11.8 8.39 8.57 3 3000.00 0.0 27291.38 6859.67 3457.55 1.02 37 355.29 180.45 -11.8 8.39 8.57 3 3000.00 0.0 22602.26 5896.96 2898.49 1.02 38 363.67 138.57 -15.1 8.27 8.57 3 3000.00 0.0 17422.98 4807.23 2368.66 1.04 39 371.95 97.32 -15.1 8.27 8.57 3 3000.00 0.0 12302.52 3590.49 1749.79 1.04 40 380.22 41.66 -18.3 5.63 5.94 3 3000.00 0.0 5312.39 1713.60 1266.83 1.05 41 385.86 20.56 -18.3 5.63 5.94 3 3000.00 0.0 2671.22 1009.81 798.11 1.05 42 391.49 4.44 -18.3 5.00 5.27 3 3000.00 0.0 599.52 291.94 443.79 1.05 X -S Area: 12391.97 Path Length: 325.62 X -S Weight: 1498058.75 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS4-Mining-Pseudo Static.gmf Processed: 29 Feb 2024 14:54:46 DATA: Analysis 1 - SS -4 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 0.00 4757.38 198.50 Profile: 2 198.50 Profile: 3 0.00 Profile: 4 201.50 Profile: 5 0.00 4697.00 (9 points) 4758.73 4757.00 (2 points) 4757.00 (2 points) 4753.50 (3 points) 4753.50 (5 points) 4699.82 Slope Surface (12 points) 0.00 4758.73 4757.38 198.50 4757.00 4698.54 453.65 4697.06 Material beneath: 1 - Overburden/Clay 0.91 4758.73 43.49 201.50 4757.00 216.13 Material beneath: 6 - Slurry Wall 201.50 4757.00 Material beneath: 2 - Sand and Gravel 198.50 4753.50 Material beneath: 2 - Sand and Gravel 226.63 4753.50 391.49 Material beneath: 3 - Stable Claystone 200.00 4699.65 391.49 Phreatic Surface (6 points) 0.00 4697.06 600.00 Failure Surface 4739.50 4697.00 0.91 201.50 600.00 198.50 Initial circular surface for critical Intersects: Centre: XL: XC: Earthquake Force 97.40 349.61 YL: YC: 4758.73 4757.00 4697.00 4739.50 4758.52 97.40 4757.00 4698.54 Bedrock 4698.54 43.49 4758.52 216.13 4757.00 201.50 4699.65 search defined by: XL,XR,R 4758.18 XR: 391.49 YR: 5246.94 Radius: R: Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR R 10.00 500.00 20 50 4758.18 172.51 226.63 4753.50 453.65 4697.06 97.40 4758.18 226.63 4753.50 391.49 4698.54 4698.54 550.00 600.00 172.51 391.49 453.65 RESULTS: Analysis 1 - SS -4 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.140 Analysis Summary There were: 19979 successful analyses from a total of 20001 trial failure surfaces 22 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.28 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 92.40 4758.21 396.49 4698.42 294.01 4980.37 300.00 2.279 <-- Critical Surface 2 92.40 4758.21 395.96 4698.43 293.84 4980.52 300.00 2.281 3 92.93 4758.21 396.49 4698.42 294.38 4980.51 300.00 2.282 4 92.40 4758.21 395.44 4698.45 293.68 4980.66 300.00 2.283 5 92.93 4758.21 395.96 4698.43 294.22 4980.65 300.00 2.284 6 93.45 4758.21 396.49 4698.42 294.75 4980.64 300.00 2.285 7 92.40 4758.21 394.91 4698.46 293.53 4980.81 300.00 2.285 8 92.93 4758.21 395.44 4698.45 294.06 4980.80 300.00 2.286 9 93.45 4758.21 395.96 4698.43 294.59 4980.79 300.00 2.287 10 92.40 4758.21 394.38 4698.47 293.37 4980.95 300.00 2.287 11 93.98 4758.20 396.49 4698.42 295.13 4980.78 300.00 2.288 12 92.93 4758.21 394.91 4698.46 293.90 4980.94 300.00 2.288 13 93.45 4758.21 395.44 4698.45 294.43 4980.93 300.00 2.289 14 92.40 4758.21 393.86 4698.48 293.21 4981.10 300.00 2.289 15 93.98 4758.20 395.96 4698.43 294.97 4980.92 300.00 2.290 16 92.93 4758.21 394.38 4698.47 293.74 4981.08 300.00 2.290 17 93.45 4758.21 394.91 4698.46 294.27 4981.08 300.00 2.291 18 94.51 4758.20 396.49 4698.42 295.50 4980.91 300.00 2.291 19 92.40 4758.21 393.33 4698.50 293.05 4981.24 300.00 2.291 20 93.98 4758.20 395.44 4698.45 294.81 4981.07 300.00 2.292 21 92.93 4758.21 393.86 4698.48 293.58 4981.23 300.00 2.292 22 93.45 4758.21 394.38 4698.47 294.11 4981.22 300.00 2.293 23 94.51 4758.20 395.96 4698.43 295.34 4981.06 300.00 2.293 24 92.40 4758.21 392.81 4698.51 292.89 4981.38 300.00 2.293 25 93.98 4758.20 394.91 4698.46 294.65 4981.21 300.00 2.294 26 95.03 4758.20 396.49 4698.42 295.87 4981.05 300.00 2.294 27 92.93 4758.21 393.33 4698.50 293.42 4981.37 300.00 2.294 28 93.45 4758.21 393.86 4698.48 293.96 4981.36 300.00 2.295 29 94.51 4758.20 395.44 4698.45 295.18 4981.20 300.00 2.295 30 92.40 4758.21 392.28 4698.52 292.73 4981.52 300.00 2.295 31 93.98 4758.20 394.38 4698.47 294.49 4981.35 300.00 2.296 32 95.03 4758.20 395.96 4698.43 295.72 4981.19 300.00 2.296 33 92.93 4758.21 392.81 4698.51 293.26 4981.51 300.00 2.296 34 93.45 4758.21 393.33 4698.50 293.80 4981.50 300.00 2.297 35 94.51 4758.20 394.91 4698.46 295.02 4981.34 300.00 2.297 36 92.40 4758.21 391.75 4698.53 292.57 4981.66 300.00 2.297 37 95.56 4758.19 396.49 4698.42 296.25 4981.18 300.00 2.297 38 93.98 4758.20 393.86 4698.48 294.33 4981.49 300.00 2.298 39 95.03 4758.20 395.44 4698.45 295.56 4981.33 300.00 2.298 40 92.93 4758.21 392.28 4698.52 293.11 4981.65 300.00 2.298 41 93.45 4758.21 392.81 4698.51 293.64 4981.65 300.00 2.299 42 94.51 4758.20 394.38 4698.47 294.86 4981.48 300.00 2.299 43 95.56 4758.19 395.96 4698.43 296.09 4981.32 300.00 2.299 44 93.98 4758.20 393.33 4698.50 294.17 4981.63 300.00 2.300 45 95.03 4758.20 394.91 4698.46 295.40 4981.47 300.00 2.300 46 92.93 4758.21 391.75 4698.53 292.95 4981.80 300.00 2.300 47 93.45 4758.21 392.28 4698.52 293.48 4981.79 300.00 2.301 48 94.51 4758.20 393.86 4698.48 294.71 4981.62 300.00 2.301 49 95.56 4758.19 395.44 4698.45 295.93 4981.46 300.00 2.301 50 93.98 4758.20 392.81 4698.51 294.02 4981.78 300.00 2.302 51 92.40 4758.21 391.23 4698.63 292.35 4981.86 300.00 2.302 52 95.03 4758.20 394.38 4698.47 295.24 4981.62 300.00 2.302 53 96.08 4758.19 395.96 4698.43 296.47 4981.45 300.00 2.302 54 93.45 4758.21 391.75 4698.53 293.32 4981.93 300.00 2.303 55 94.51 4758.20 393.33 4698.50 294.55 4981.77 300.00 2.303 56 96.08 4758.19 396.49 4698.42 296.62 4981.31 300.00 2.303 57 95.56 4758.19 394.91 4698.46 295.77 4981.60 300.00 2.303 58 93.98 4758.20 392.28 4698.52 293.86 4981.92 300.00 2.304 59 95.03 4758.20 393.86 4698.48 295.08 4981.76 300.00 2.304 60 96.08 4758.19 395.44 4698.45 296.31 4981.60 300.00 2.304 61 94.51 4758.20 392.81 4698.51 294.39 4981.91 300.00 2.305 62 92.93 4758.21 391.23 4698.63 292.72 4982.00 300.00 2.305 63 95.56 4758.19 394.38 4698.47 295.62 4981.75 300.00 2.305 64 92.40 4758.21 390.17 4698.98 291.77 4982.38 300.00 2.305 65 96.61 4758.19 396.49 4698.42 297.00 4981.44 300.00 2.306 66 93.98 4758.20 391.75 4698.53 293.70 4982.06 300.00 2.306 67 95.03 4758.20 393.33 4698.50 294.93 4981.90 300.00 2.306 68 96.08 4758.19 394.91 4698.46 296.15 4981.74 300.00 2.306 69 94.51 4758.20 392.28 4698.52 294.23 4982.05 300.00 2.307 70 95.56 4758.19 393.86 4698.48 295.46 4981.89 300.00 2.307 71 93.45 4758.21 391.23 4698.63 293.10 4982.13 300.00 2.308 72 96.61 4758.19 395.96 4698.43 296.84 4981.58 300.00 2.308 73 95.03 4758.20 392.81 4698.51 294.77 4982.04 300.00 2.308 74 97.14 4758.18 396.49 4698.42 297.38 4981.58 300.00 2.308 75 92.40 4758.21 389.65 4699.15 291.48 4982.64 300.00 2.308 76 92.93 4758.21 390.17 4698.98 292.15 4982.51 300.00 2.308 77 96.08 4758.19 394.38 4698.47 295.99 4981.88 300.00 2.308 78 94.51 4758.20 391.75 4698.53 294.08 4982.19 300.00 2.309 79 95.56 4758.19 393.33 4698.50 295.30 4982.03 300.00 2.309 80 96.61 4758.19 394.91 4698.46 296.53 4981.87 300.00 2.309 81 95.03 4758.20 392.28 4698.52 294.61 4982.18 300.00 2.310 82 92.40 4758.21 390.70 4698.80 292.06 4982.12 300.00 2.310 83 96.08 4758.19 393.86 4698.48 295.84 4982.02 300.00 2.310 84 96.61 4758.19 395.44 4698.45 296.68 4981.73 300.00 2.310 85 97.14 4758.18 395.96 4698.43 297.22 4981.72 300.00 2.310 86 97.66 4758.18 396.49 4698.42 297.75 4981.71 300.00 2.310 87 93.98 4758.20 391.23 4698.63 293.48 4982.26 300.00 2.311 88 93.45 4758.21 390.17 4698.98 292.52 4982.64 300.00 2.311 89 92.93 4758.21 389.65 4699.15 291.86 4982.77 300.00 2.311 90 92.40 4758.21 389.12 4699.33 291.19 4982.90 300.00 2.311 91 95.56 4758.19 392.81 4698.51 295.14 4982.17 300.00 2.311 92 96.61 4758.19 394.38 4698.47 296.37 4982.01 300.00 2.311 93 95.03 4758.20 391.75 4698.53 294.45 4982.32 300.00 2.312 94 96.08 4758.19 393.33 4698.50 295.68 4982.16 300.00 2.312 95 97.14 4758.18 395.44 4698.45 297.06 4981.86 300.00 2.313 96 97.66 4758.18 395.96 4698.43 297.59 4981.85 300.00 2.313 97 95.56 4758.19 392.28 4698.52 294.99 4982.31 300.00 2.313 98 92.93 4758.21 390.70 4698.80 292.44 4982.25 300.00 2.313 99 96.61 4758.19 393.86 4698.48 296.21 4982.15 300.00 2.313 Critical Failure Surface (circle 1) Intersects: XL: 92.40 YL: Centre: XC: 294.01 YC: Generated failure surface: (20 points) 92.40 4718.31 163.18 4687.78 244.56 4680.97 4758.21 4710.40 4684.48 105.42 178.81 261.54 4758.21 4980.37 4747.06 4703.37 4682.13 XR: 396.49 YR: 4698.42 Radius: R: 300.00 119.05 194.81 278.62 4736.67 4697.25 4680.77 133.25 211.14 295.75 4727.08 4692.04 4680.38 147.97 227.74 312.88 329.95 4698.42 4682.53 346.90 4685.07 363.67 4688.57 380.22 4693.03 396.49 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 92.40 10.63 40.6 5.00 6.58 1 50.00 25.0 1062.74 0.00 164.86 1.12 2 97.40 61.26 40.6 8.02 10.55 2 10.00 35.0 6486.94 0.00 637.72 1.04 3 105.42 146.46 37.3 9.92 12.48 2 10.00 35.0 16166.89 0.00 1317.55 1.02 4 115.34 73.74 37.3 3.71 4.66 2 10.00 35.0 8310.23 411.32 1829.58 1.02 5 119.05 167.84 34.0 7.10 8.57 2 10.00 35.0 19388.37 2793.89 2314.75 1.00 6 126.15 201.36 34.0 7.10 8.57 2 10.00 35.0 23762.23 5358.71 2876.25 1.00 7 133.25 242.03 30.8 7.36 8.57 2 10.00 35.0 28976.62 7812.85 3465.64 0.98 8 140.61 273.73 30.8 7.36 8.57 2 10.00 35.0 33115.30 10156.91 3983.11 0.98 9 147.97 313.67 27.5 7.60 8.57 2 10.00 35.0 38245.86 12386.03 4535.13 0.97 10 155.58 343.13 27.5 7.60 8.57 2 10.00 35.0 42093.95 14501.37 5005.61 0.97 11 163.18 458.50 24.2 9.33 10.23 2 10.00 35.0 56545.32 19922.13 5557.55 0.96 12 172.51 330.87 24.2 6.30 6.90 2 10.00 35.0 40966.24 14954.87 5977.32 0.96 13 178.81 540.24 20.9 9.70 10.39 2 10.00 35.0 67112.45 24614.77 6439.37 0.96 14 188.51 369.88 20.9 6.31 6.75 3 3000.00 0.0 46117.36 17297.19 6808.34 1.07 15 194.81 222.61 17.7 3.69 3.87 3 3000.00 0.0 27829.44 10345.94 7127.71 1.05 16 198.50 91.75 17.7 1.50 1.57 3 3000.00 0.0 9823.99 3310.86 6130.26 1.05 17 200.00 92.47 17.7 1.50 1.57 3 3000.00 0.0 9621.72 1400.71 5994.99 1.05 18 201.50 611.51 17.7 9.64 10.12 3 3000.00 0.0 70982.53 3815.60 6942.36 1.05 19 211.14 327.19 14.4 4.99 5.15 3 3000.00 0.0 38180.22 2627.15 7316.72 1.03 20 216.13 346.69 14.4 5.25 5.42 3 3000.00 0.0 40655.38 3199.56 7405.98 1.03 21 221.38 344.57 14.4 5.25 5.42 3 3000.00 0.0 40688.58 3644.96 7412.31 1.03 22 226.63 581.65 11.5 8.96 9.15 3 3000.00 0.0 69104.84 7054.78 7440.37 1.02 23 235.59 570.66 11.1 8.96 9.14 3 3000.00 0.0 68148.12 8019.47 7343.45 1.02 24 244.56 528.16 7.9 8.49 8.57 3 3000.00 0.0 63366.54 8279.15 7283.24 1.01 25 253.05 514.07 7.9 8.49 8.57 3 3000.00 0.0 61936.80 8878.63 7114.80 1.01 26 261.54 500.95 4.6 8.54 8.57 3 3000.00 0.0 60594.93 9347.52 6988.60 1.00 27 270.08 482.46 4.6 8.54 8.57 3 3000.00 0.0 58577.38 9686.16 6752.40 1.00 28 278.62 463.21 1.3 8.57 8.57 3 3000.00 0.0 56439.60 9894.46 6558.22 1.00 29 287.19 440.41 1.3 8.57 8.57 3 3000.00 0.0 53841.98 9971.71 6255.02 1.00 30 295.75 415.39 -2.0 8.56 8.57 3 3000.00 0.0 50946.87 9918.56 5994.17 1.00 31 304.32 388.41 -2.0 8.56 8.57 3 3000.00 0.0 47785.43 9734.19 5625.04 1.00 32 312.88 358.10 -5.2 8.53 8.57 3 3000.00 0.0 44187.59 9419.30 5299.13 1.00 33 321.41 327.14 -5.2 8.53 8.57 3 3000.00 0.0 40484.88 8973.70 4865.27 1.00 34 329.95 292.17 -8.5 8.47 8.57 3 3000.00 0.0 36261.66 8398.71 4475.99 1.01 35 338.42 257.47 -8.5 8.47 8.57 3 3000.00 0.0 32047.46 7693.24 3978.72 1.01 36 346.90 218.60 -11.8 8.39 8.57 3 3000.00 0.0 27291.38 6859.67 3528.36 1.02 37 355.29 180.45 -11.8 8.39 8.57 3 3000.00 0.0 22602.26 5896.96 2969.28 1.02 38 363.67 138.57 -15.1 8.27 8.57 3 3000.00 0.0 17422.98 4807.23 2459.96 1.04 39 371.95 97.32 -15.1 8.27 8.57 3 3000.00 0.0 12302.52 3590.49 1841.06 1.04 40 380.22 41.66 -18.3 5.63 5.94 3 3000.00 0.0 5312.39 1713.60 1379.23 1.05 41 385.86 20.56 -18.3 5.63 5.94 3 3000.00 0.0 2671.22 1009.81 910.53 1.05 42 391.49 4.44 -18.3 5.00 5.27 3 3000.00 0.0 599.52 291.94 556.20 1.05 X -S Area: 12391.97 Path Length: 325.62 X -S Weight: 1498058.75 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS5-Mining.gmf Processed: 05 Mar 2024 08:52:28 DATA: Analysis 1 - SS -5 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 0.00 4761.46 142.47 4761.46 200.00 4762.00 234.61 4761.00 254.20 4760.20 290.46 4759.99 316.67 4759.96 328.55 4756.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 298.50 4759.99 301.50 4759.99 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4756.00 298.50 4756.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 301.50 4756.00 328.55 4756.00 500.16 4698.80 Profile: 5 (6 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4699.22 100.00 4699.22 300.00 4699.22 4698.76 600.00 4698.50 Slope Surface (15 points) 4761.46 4761.00 4759.96 0.00 4762.00 234.61 4759.99 316.67 4698.50 Phreatic Surface (6 points) 0.00 4698.76 600.00 Failure Surface 4742.00 4698.50 142.47 254.20 328.55 4761.46 4760.20 4756.00 298.50 4742.00 200.00 4761.73 290.46 4760.00 500.16 4698.80 301.50 4699.22 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 275.00 YL: 4760.09 XR: 500.16 YR: Centre: XC: 488.06 YC: 5098.62 Radius: R: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 400.00 20 20 50 4761.73 211.90 4760.00 298.50 4762.00 233.31 4759.99 301.50 500.16 4698.80 211.90 298.50 564.62 4762.00 4759.99 4698.76 500.16 4698.80 4698.80 400.00 564.62 233.31 301.50 600.00 564.62 RESULTS: Analysis 1 - SS -5 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.116 Analysis Summary There were: 16382 successful analyses from a total of 20001 trial failure surfaces 3619 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.45 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 280.00 4760.06 500.42 4698.80 547.92 5296.92 600.00 2.449 <-- Critical Surface 2 280.00 4760.06 500.42 4698.80 545.69 5288.90 591.84 2.449 3 280.00 4760.06 499.90 4698.89 547.81 5296.97 600.00 2.449 4 280.00 4760.06 500.42 4698.80 543.47 5280.88 583.67 2.449 5 280.00 4760.06 499.90 4698.89 545.58 5288.96 591.84 2.449 6 280.00 4760.06 500.42 4698.80 541.24 5272.86 575.51 2.449 7 280.00 4760.06 499.90 4698.89 543.35 5280.94 583.67 2.450 8 280.00 4760.06 500.42 4698.80 539.01 5264.83 567.35 2.450 9 280.00 4760.06 499.90 4698.89 541.12 5272.92 575.51 2.450 10 280.00 4760.06 499.37 4699.06 547.49 5297.13 600.00 2.450 11 280.00 4760.06 499.90 4698.89 538.89 5264.89 567.35 2.450 12 280.00 4760.06 500.42 4698.80 536.77 5256.80 559.18 2.450 13 280.00 4760.06 499.37 4699.06 545.27 5289.12 591.84 2.450 14 280.00 4760.06 499.90 4698.89 536.66 5256.86 559.18 2.451 15 280.00 4760.06 499.37 4699.06 543.04 5281.10 583.67 2.451 16 280.00 4760.06 500.42 4698.80 534.54 5248.76 551.02 2.451 17 280.00 4760.06 499.37 4699.06 540.81 5273.08 575.51 2.451 18 280.00 4760.06 499.90 4698.89 534.42 5248.83 551.02 2.451 19 280.00 4760.06 500.42 4698.80 532.30 5240.72 542.86 2.451 20 280.00 4760.06 499.37 4699.06 538.58 5265.05 567.35 2.451 21 280.00 4760.06 498.84 4699.24 547.18 5297.29 600.00 2.451 22 280.00 4760.06 498.84 4699.24 544.95 5289.28 591.84 2.452 23 280.00 4760.06 499.90 4698.89 532.18 5240.78 542.86 2.452 24 280.00 4760.06 499.37 4699.06 536.34 5257.02 559.18 2.452 25 280.00 4760.06 500.42 4698.80 530.07 5232.67 534.69 2.452 26 280.00 4760.06 498.84 4699.24 542.72 5281.26 583.67 2.452 27 280.00 4760.06 498.84 4699.24 540.49 5273.24 575.51 2.452 28 280.00 4760.06 499.90 4698.89 529.94 5232.74 534.69 2.452 29 280.00 4760.06 499.37 4699.06 534.11 5248.99 551.02 2.452 30 280.00 4760.06 500.42 4698.80 527.83 5224.62 526.53 2.453 31 280.00 4760.06 498.84 4699.24 538.26 5265.21 567.35 2.453 32 280.00 4760.06 498.32 4699.41 546.86 5297.45 600.00 2.453 33 280.00 4760.06 499.37 4699.06 531.87 5240.95 542.86 2.453 34 280.00 4760.06 498.32 4699.41 544.63 5289.44 591.84 2.453 35 280.00 4760.06 499.90 4698.89 527.70 5224.68 526.53 2.453 36 280.00 4760.06 498.84 4699.24 536.03 5257.18 559.18 2.453 37 280.00 4760.06 498.32 4699.41 542.40 5281.42 583.67 2.453 38 280.00 4760.06 500.42 4698.80 525.59 5216.56 518.37 2.453 39 280.00 4760.06 499.37 4699.06 529.64 5232.90 534.69 2.453 40 280.00 4760.06 498.32 4699.41 540.18 5273.40 575.51 2.453 41 280.00 4760.06 498.84 4699.24 533.80 5249.15 551.02 2.453 42 280.00 4760.06 499.90 4698.89 525.46 5216.62 518.37 2.454 43 280.00 4760.06 498.32 4699.41 537.95 5265.37 567.35 2.454 44 280.00 4760.06 497.79 4699.59 546.54 5297.61 600.00 2.454 45 280.00 4760.06 498.84 4699.24 531.56 5241.11 542.86 2.454 46 279.47 4760.06 500.42 4698.80 547.30 5296.97 600.00 2.454 47 280.00 4760.06 497.79 4699.59 544.31 5289.59 591.84 2.454 48 280.00 4760.06 499.37 4699.06 527.40 5224.85 526.53 2.454 49 280.00 4760.06 500.42 4698.80 523.35 5208.49 510.20 2.454 50 280.00 4760.06 498.32 4699.41 535.72 5257.35 559.18 2.454 51 279.47 4760.06 500.42 4698.80 545.08 5288.95 591.84 2.454 52 279.47 4760.06 499.90 4698.89 547.19 5297.02 600.00 2.454 53 280.00 4760.06 497.79 4699.59 542.09 5281.58 583.67 2.454 54 279.47 4760.06 500.42 4698.80 542.86 5280.93 583.67 2.454 55 279.47 4760.06 499.90 4698.89 544.97 5289.01 591.84 2.454 56 280.00 4760.06 499.90 4698.89 523.22 5208.56 510.20 2.454 57 280.00 4760.06 498.84 4699.24 529.33 5233.06 534.69 2.455 58 280.00 4760.06 498.32 4699.41 533.49 5249.31 551.02 2.455 59 280.00 4760.06 497.79 4699.59 539.86 5273.56 575.51 2.455 60 279.47 4760.06 499.90 4698.89 542.74 5280.99 583.67 2.455 61 279.47 4760.06 500.42 4698.80 540.63 5272.90 575.51 2.455 62 280.00 4760.06 499.37 4699.06 525.16 5216.79 518.37 2.455 63 279.47 4760.06 499.90 4698.89 540.52 5272.96 575.51 2.455 64 279.47 4760.06 500.42 4698.80 538.41 5264.87 567.35 2.455 65 280.00 4760.06 497.79 4699.59 537.63 5265.54 567.35 2.455 66 280.00 4760.06 500.42 4698.80 521.10 5200.41 502.04 2.455 67 280.00 4760.06 497.27 4699.76 546.22 5297.76 600.00 2.455 68 280.00 4760.06 498.32 4699.41 531.25 5241.27 542.86 2.455 69 279.47 4760.06 499.90 4698.89 538.29 5264.93 567.35 2.455 70 280.00 4760.06 498.84 4699.24 527.09 5225.01 526.53 2.455 71 279.47 4760.06 500.42 4698.80 536.18 5256.84 559.18 2.455 72 280.00 4760.06 497.27 4699.76 543.99 5289.75 591.84 2.455 73 279.47 4760.06 499.37 4699.06 546.87 5297.18 600.00 2.455 74 280.00 4760.06 497.79 4699.59 535.40 5257.51 559.18 2.455 75 280.00 4760.06 499.90 4698.89 520.97 5200.49 502.04 2.455 76 279.47 4760.06 499.37 4699.06 544.65 5289.17 591.84 2.455 77 279.47 4760.06 499.90 4698.89 536.06 5256.90 559.18 2.455 78 280.00 4760.06 497.27 4699.76 541.77 5281.74 583.67 2.455 79 280.00 4760.06 499.37 4699.06 522.91 5208.72 510.20 2.456 80 279.47 4760.06 500.42 4698.80 533.95 5248.80 551.02 2.456 81 279.47 4760.06 499.37 4699.06 542.43 5281.15 583.67 2.456 82 280.00 4760.06 498.32 4699.41 529.02 5233.23 534.69 2.456 83 280.00 4760.06 497.79 4699.59 533.17 5249.47 551.02 2.456 84 280.00 4760.06 497.27 4699.76 539.54 5273.72 575.51 2.456 85 279.47 4760.06 499.37 4699.06 540.20 5273.12 575.51 2.456 86 280.00 4760.06 498.84 4699.24 524.85 5216.95 518.37 2.456 87 279.47 4760.06 499.90 4698.89 533.83 5248.86 551.02 2.456 88 280.00 4760.06 500.42 4698.80 518.86 5192.33 493.88 2.456 89 279.47 4760.06 500.42 4698.80 531.72 5240.75 542.86 2.456 90 280.00 4760.06 497.27 4699.76 537.32 5265.70 567.35 2.456 91 279.47 4760.06 499.37 4699.06 537.97 5265.10 567.35 2.456 92 280.00 4760.06 497.79 4699.59 530.94 5241.43 542.86 2.456 93 280.00 4760.06 498.32 4699.41 526.78 5225.17 526.53 2.456 94 280.00 4760.06 496.74 4699.94 545.90 5297.92 600.00 2.456 95 279.47 4760.06 498.84 4699.24 546.56 5297.34 600.00 2.456 96 279.47 4760.06 499.90 4698.89 531.60 5240.82 542.86 2.456 97 280.00 4760.06 499.90 4698.89 518.73 5192.41 493.88 2.456 98 280.00 4760.06 499.37 4699.06 520.67 5200.65 502.04 2.456 99 279.47 4760.06 498.84 4699.24 544.33 5289.32 591.84 2.456 Critical Failure Surface (circle 1) Intersects: XL: 280.00 YL: 4760.06 Centre: XC: 547.92 YC: 5296.92 Generated failure surface: (20 points) 280.00 4760.06 290.89 4754.76 4740.19 335.47 4735.79 346.85 4731.61 4720.48 393.11 4717.23 404.85 4714.23 4706.63 452.32 4704.58 464.30 4702.77 4698.80 XR: 500.42 YR: 4698.80 Radius: R: 600.00 301.89 358.30 416.64 476.31 4749.68 4727.67 4711.46 4701.21 312.99 369.83 428.49 488.36 4744.82 4723.96 4708.92 4699.88 324.19 381.44 440.38 500.42 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 280.00 4.18 25.9 4.17 4.64 1 50.00 25.0 418.21 0.00 82.70 1.02 2 284.17 12.55 25.9 4.17 4.64 1 50.00 25.0 1254.65 0.00 266.27 1.02 3 288.34 9.59 25.9 2.12 2.36 2 10.00 35.0 975.01 0.00 401.96 0.98 4 290.46 23.99 24.9 4.02 4.43 2 10.00 35.0 2517.84 0.00 551.24 0.97 5 294.48 31.43 24.8 4.02 4.43 2 10.00 35.0 3374.14 0.00 739.76 0.97 6 298.50 28.31 24.8 3.00 3.30 6 0.00 45.0 2831.40 0.00 794.02 0.93 7 301.50 65.45 23.7 5.75 6.28 2 10.00 35.0 7183.80 0.00 1109.13 0.97 8 307.25 79.84 23.6 5.75 6.27 2 10.00 35.0 8838.70 0.00 1365.60 0.97 9 312.99 58.49 22.5 3.68 3.98 2 10.00 35.0 6507.33 0.00 1580.69 0.97 10 316.67 63.18 22.5 3.76 4.07 2 10.00 35.0 7077.54 0.00 1682.41 0.97 11 320.43 64.31 22.5 3.76 4.07 2 10.00 35.0 7278.66 0.00 1730.24 0.97 12 324.19 75.86 21.3 4.36 4.68 2 10.00 35.0 8675.95 0.00 1787.45 0.97 13 328.55 122.59 21.3 6.92 7.43 2 10.00 35.0 14097.76 0.00 1830.54 0.97 14 335.47 102.36 20.2 5.69 6.06 2 10.00 35.0 11770.98 0.00 1872.05 0.96 15 341.16 103.45 20.2 5.69 6.06 2 10.00 35.0 11896.85 0.00 1892.03 0.96 16 346.85 104.93 19.0 5.73 6.06 2 10.00 35.0 12066.54 0.00 1916.70 0.96 17 352.57 105.29 19.0 5.73 6.06 2 10.00 35.0 12108.34 0.00 1923.34 0.96 18 358.30 106.00 17.8 5.77 6.06 2 10.00 35.0 12189.70 0.00 1934.60 0.96 19 364.07 105.62 17.8 5.77 6.06 2 10.00 35.0 12145.92 0.00 1927.66 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.97 31 0.97 32 0.97 33 0.97 34 0.97 35 0.97 36 0.97 37 0.97 38 0.98 39 0.98 40 0.98 41 0.98 369.83 375.63 381.44 387.27 393.11 398.98 404.85 410.74 416.64 422.56 428.49 434.43 440.38 446.35 452.32 458.31 464.30 470.31 476.31 482.34 488.36 494.21 105.53 104.40 103.50 101.61 99.88 97.23 94.67 91.25 87.84 83.64 79.39 74.41 69.31 63.55 57.60 51.07 44.27 36.95 29.32 21.23 12.53 4.16 16.7 5.80 16.7 5.80 15.5 5.84 15.5 5.84 14.4 5.87 14.4 5.87 13.2 5.90 13.2 5.90 12.1 5.92 12.1 5.92 10.9 5.95 10.9 5.95 9.7 9.7 8.6 8.6 7.4 7.4 6.3 6.3 5.1 5.1 5.97 5.97 5.99 5.99 6.01 6.01 6.02 6.02 5.85 6.21 6.06 2 10.00 35.0 12135.50 6.06 2 10.00 35.0 12005.56 6.06 2 10.00 35.0 11902.03 6.06 2 10.00 35.0 11685.08 6.06 2 10.00 35.0 11486.64 6.06 2 10.00 35.0 11181.53 6.06 2 10.00 35.0 10887.02 6.06 2 10.00 35.0 10493.63 6.06 2 10.00 35.0 10101.64 6.06 2 10.00 35.0 9618.99 6.06 2 10.00 35.0 9129.82 6.06 2 10.00 35.0 8557.64 6.06 2 10.00 35.0 7970.71 6.06 2 10.00 35.0 7308.64 6.06 2 10.00 35.0 6624.21 6.06 2 10.00 35.0 5872.50 6.06 2 10.00 35.0 5091.36 6.06 2 10.00 35.0 4249.80 6.06 2 10.00 35.0 3372.19 6.06 2 10.00 35.0 2441.42 5.88 2 10.00 35.0 1440.55 6.24 2 10.00 35.0 478.31 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1925.26 1904.62 1888.14 1853.71 1822.97 1774.49 1729.07 1666.60 1606.25 1529.50 1454.03 1362.89 1271.96 1166.25 1059.59 939.28 816.62 681.57 542.55 392.67 239.62 74.71 X -S Area: 2780.75 Path Length: 230.18 X -S Weight: 317244.09 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS5-Mining-Pseudo Static.gmf Processed: 05 Mar 2024 08:54:08 DATA: Analysis 1 - SS -5 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) 0.00 4761.46 4762.00 234.61 4761.00 4759.99 316.67 4759.96 Profile: 2 (2 points) 298.50 4759.99 Profile: 3 (2 points) 0.00 4756.00 Profile: 4 (3 points) 301.50 4756.00 Profile: 5 (6 points) 0.00 4699.22 4698.76 600.00 4698.50 Slope Surface (15 points) 4761.46 4761.00 4759.96 0.00 4762.00 234.61 4759.99 316.67 4698.50 Material beneath: 1 - Overburden/Clay 142.47 4761.46 200.00 254.20 4760.20 4761.73 211.90 290.46 4760.00 328.55 4756.00 Material beneath: 6 - Slurry Wall 301.50 4759.99 Material beneath: 2 - Sand and Gravel 298.50 4756.00 Material beneath: 2 - Sand and Gravel 328.55 4756.00 500.16 4698.80 Material beneath: 3 - Stable Claystone Bedrock 100.00 4699.22 300.00 4699.22 Phreatic Surface (6 points) 0.00 4698.76 600.00 Failure Surface 4742.00 4698.50 142.47 254.20 328.55 4761.46 4760.20 4756.00 298.50 4742.00 200.00 4761.73 290.46 4760.00 500.16 4698.80 301.50 4699.22 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Earthquake Force 275.00 488.06 YL: YC: 4760.09 5098.62 Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR: XR R 500.16 YR: Radius: R: 4762.00 233.31 298.50 4759.99 500.16 4698.80 211.90 298.50 564.62 4762.00 4759.99 4698.76 500.16 4698.80 4698.80 400.00 301.50 564.62 233.31 301.50 600.00 564.62 Range of variation: 10.00 Trial positions within range: 20 10.00 400.00 20 50 RESULTS: Analysis 1 - SS -5 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.484 Analysis Summary There were: 16382 successful analyses from a total of 20001 trial failure surfaces 3619 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.94 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 280.00 4760.06 500.42 4698.80 547.92 5296.92 600.00 1.941 <-- Critical Surface 2 280.00 4760.06 499.90 4698.89 547.81 5296.97 600.00 1.942 3 280.00 4760.06 500.42 4698.80 545.69 5288.90 591.84 1.942 4 280.00 4760.06 499.90 4698.89 545.58 5288.96 591.84 1.942 5 280.00 4760.06 500.42 4698.80 543.47 5280.88 583.67 1.942 6 280.00 4760.06 499.90 4698.89 543.35 5280.94 583.67 1.942 7 280.00 4760.06 499.37 4699.06 547.49 5297.13 600.00 1.942 8 280.00 4760.06 500.42 4698.80 541.24 5272.86 575.51 1.942 9 280.00 4760.06 499.37 4699.06 545.27 5289.12 591.84 1.943 10 280.00 4760.06 499.90 4698.89 541.12 5272.92 575.51 1.943 11 280.00 4760.06 500.42 4698.80 539.01 5264.83 567.35 1.943 12 280.00 4760.06 499.37 4699.06 543.04 5281.10 583.67 1.943 13 280.00 4760.06 499.90 4698.89 538.89 5264.89 567.35 1.943 14 280.00 4760.06 498.84 4699.24 547.18 5297.29 600.00 1.943 15 280.00 4760.06 500.42 4698.80 536.77 5256.80 559.18 1.943 16 280.00 4760.06 499.37 4699.06 540.81 5273.08 575.51 1.943 17 280.00 4760.06 498.84 4699.24 544.95 5289.28 591.84 1.943 18 280.00 4760.06 499.90 4698.89 536.66 5256.86 559.18 1.944 19 280.00 4760.06 498.84 4699.24 542.72 5281.26 583.67 1.944 20 280.00 4760.06 499.37 4699.06 538.58 5265.05 567.35 1.944 21 280.00 4760.06 500.42 4698.80 534.54 5248.76 551.02 1.944 22 280.00 4760.06 498.32 4699.41 546.86 5297.45 600.00 1.944 23 280.00 4760.06 499.90 4698.89 534.42 5248.83 551.02 1.944 24 280.00 4760.06 498.84 4699.24 540.49 5273.24 575.51 1.944 25 280.00 4760.06 498.32 4699.41 544.63 5289.44 591.84 1.944 26 280.00 4760.06 499.37 4699.06 536.34 5257.02 559.18 1.944 27 280.00 4760.06 500.42 4698.80 532.30 5240.72 542.86 1.945 28 280.00 4760.06 498.32 4699.41 542.40 5281.42 583.67 1.945 29 280.00 4760.06 498.84 4699.24 538.26 5265.21 567.35 1.945 30 280.00 4760.06 497.79 4699.59 546.54 5297.61 600.00 1.945 31 280.00 4760.06 499.90 4698.89 532.18 5240.78 542.86 1.945 32 280.00 4760.06 499.37 4699.06 534.11 5248.99 551.02 1.945 33 279.47 4760.06 500.42 4698.80 547.30 5296.97 600.00 1.945 34 280.00 4760.06 498.32 4699.41 540.18 5273.40 575.51 1.945 35 280.00 4760.06 497.79 4699.59 544.31 5289.59 591.84 1.945 36 279.47 4760.06 499.90 4698.89 547.19 5297.02 600.00 1.945 37 280.00 4760.06 498.84 4699.24 536.03 5257.18 559.18 1.945 38 280.00 4760.06 500.42 4698.80 530.07 5232.67 534.69 1.945 39 279.47 4760.06 500.42 4698.80 545.08 5288.95 591.84 1.945 40 279.47 4760.06 499.90 4698.89 544.97 5289.01 591.84 1.945 41 280.00 4760.06 497.79 4699.59 542.09 5281.58 583.67 1.945 42 280.00 4760.06 499.90 4698.89 529.94 5232.74 534.69 1.945 43 280.00 4760.06 498.32 4699.41 537.95 5265.37 567.35 1.945 44 280.00 4760.06 499.37 4699.06 531.87 5240.95 542.86 1.945 45 279.47 4760.06 500.42 4698.80 542.86 5280.93 583.67 1.946 46 280.00 4760.06 497.27 4699.76 546.22 5297.76 600.00 1.946 47 279.47 4760.06 499.90 4698.89 542.74 5280.99 583.67 1.946 48 280.00 4760.06 498.84 4699.24 533.80 5249.15 551.02 1.946 49 279.47 4760.06 499.37 4699.06 546.87 5297.18 600.00 1.946 50 280.00 4760.06 497.79 4699.59 539.86 5273.56 575.51 1.946 51 280.00 4760.06 497.27 4699.76 543.99 5289.75 591.84 1.946 52 280.00 4760.06 500.42 4698.80 527.83 5224.62 526.53 1.946 53 279.47 4760.06 500.42 4698.80 540.63 5272.90 575.51 1.946 54 280.00 4760.06 498.32 4699.41 535.72 5257.35 559.18 1.946 55 279.47 4760.06 499.37 4699.06 544.65 5289.17 591.84 1.946 56 279.47 4760.06 499.90 4698.89 540.52 5272.96 575.51 1.946 57 280.00 4760.06 499.90 4698.89 527.70 5224.68 526.53 1.946 58 280.00 4760.06 499.37 4699.06 529.64 5232.90 534.69 1.946 59 280.00 4760.06 497.27 4699.76 541.77 5281.74 583.67 1.946 60 280.00 4760.06 497.79 4699.59 537.63 5265.54 567.35 1.946 61 280.00 4760.06 498.84 4699.24 531.56 5241.11 542.86 1.946 62 279.47 4760.06 500.42 4698.80 538.41 5264.87 567.35 1.946 63 279.47 4760.06 499.37 4699.06 542.43 5281.15 583.67 1.946 64 280.00 4760.06 496.74 4699.94 545.90 5297.92 600.00 1.946 65 279.47 4760.06 498.84 4699.24 546.56 5297.34 600.00 1.946 66 279.47 4760.06 499.90 4698.89 538.29 5264.93 567.35 1.946 67 280.00 4760.06 498.32 4699.41 533.49 5249.31 551.02 1.946 68 280.00 4760.06 497.27 4699.76 539.54 5273.72 575.51 1.947 69 280.00 4760.06 500.42 4698.80 525.59 5216.56 518.37 1.947 70 279.47 4760.06 499.37 4699.06 540.20 5273.12 575.51 1.947 71 280.00 4760.06 496.74 4699.94 543.67 5289.91 591.84 1.947 72 279.47 4760.06 498.84 4699.24 544.33 5289.32 591.84 1.947 73 280.00 4760.06 497.79 4699.59 535.40 5257.51 559.18 1.947 74 279.47 4760.06 500.42 4698.80 536.18 5256.84 559.18 1.947 75 280.00 4760.06 499.37 4699.06 527.40 5224.85 526.53 1.947 76 279.47 4760.06 499.90 4698.89 536.06 5256.90 559.18 1.947 77 280.00 4760.06 498.84 4699.24 529.33 5233.06 534.69 1.947 78 280.00 4760.06 499.90 4698.89 525.46 5216.62 518.37 1.947 79 279.47 4760.06 498.84 4699.24 542.11 5281.31 583.67 1.947 80 280.00 4760.06 498.32 4699.41 531.25 5241.27 542.86 1.947 81 280.00 4760.06 496.74 4699.94 541.45 5281.90 583.67 1.947 82 280.00 4760.06 497.27 4699.76 537.32 5265.70 567.35 1.947 83 279.47 4760.06 499.37 4699.06 537.97 5265.10 567.35 1.947 84 279.47 4760.06 498.32 4699.41 546.24 5297.50 600.00 1.947 85 280.00 4760.06 496.21 4700.12 545.57 5298.08 600.00 1.947 86 280.00 4760.06 497.79 4699.59 533.17 5249.47 551.02 1.947 87 279.47 4760.06 500.42 4698.80 533.95 5248.80 551.02 1.947 88 279.47 4760.06 498.84 4699.24 539.89 5273.28 575.51 1.947 89 279.47 4760.06 498.32 4699.41 544.01 5289.48 591.84 1.947 90 279.47 4760.06 499.90 4698.89 533.83 5248.86 551.02 1.947 91 280.00 4760.06 496.74 4699.94 539.23 5273.88 575.51 1.947 92 280.00 4760.06 497.27 4699.76 535.09 5257.67 559.18 1.947 93 280.00 4760.06 496.21 4700.12 543.35 5290.07 591.84 1.947 94 280.00 4760.06 500.42 4698.80 523.35 5208.49 510.20 1.947 95 279.47 4760.06 499.37 4699.06 535.75 5257.06 559.18 1.947 96 278.95 4760.06 500.42 4698.80 546.69 5297.01 600.00 1.947 97 280.00 4760.06 498.84 4699.24 527.09 5225.01 526.53 1.947 98 280.00 4760.06 499.37 4699.06 525.16 5216.79 518.37 1.948 99 278.95 4760.06 499.90 4698.89 546.58 5297.07 600.00 1.948 Critical Failure Surface (circle 1) Intersects: XL: 280.00 YL: 4760.06 XR: 500.42 YR: 4698.80 Centre: XC: 547.92 YC: 5296.92 Radius: R: 600.00 Generated failure surface: (20 points) 280.00 4760 06 290.89 4754.76 301.89 4749.68 312.99 4744.82 324.19 4740.19 335.47 4735.79 346.85 4731.61 358.30 4727.67 369.83 4723.96 381.44 4720.48 393.11 4706.63 452.32 4698.80 4717.23 4704.58 404.85 4714.23 416.64 4711.46 464.30 4702.77 476.31 4701.21 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) 428.49 488.36 4708.92 440.38 4699.88 500.42 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 280.00 4.18 25.9 4.17 4.64 1 50.00 25.0 418.21 0.00 78.58 1.00 2 284.17 12.55 25.9 4.17 4.64 1 50.00 25.0 1254.65 0.00 258.18 1.00 3 288.34 9.59 25.9 2.12 2.36 2 10.00 35.0 975.01 0.00 389.09 0.95 4 290.46 23.99 24.9 4.02 4.43 2 10.00 35.0 2517.84 0.00 534.43 0.94 5 294.48 31.43 24.8 4.02 4.43 2 10.00 35.0 3374.14 0.00 717.46 0.94 6 298.50 28.31 24.8 3.00 3.30 6 0.00 45.0 2831.40 0.00 762.40 0.89 7 301.50 65.45 23.7 5.75 6.28 2 10.00 35.0 7183.80 0.00 1077.31 0.94 8 307.25 79.84 23.6 5.75 6.27 2 10.00 35.0 8838.70 0.00 1326.65 0.94 9 312.99 58.49 22.5 3.68 3.98 2 10.00 35.0 6507.33 0.00 1537.81 0.94 10 316.67 63.18 22.5 3.76 4.07 2 10.00 35.0 7077.54 0.00 1636.78 0.94 11 320.43 64.31 22.5 3.76 4.07 2 10.00 35.0 7278.66 0.00 1683.33 0.94 12 324.19 75.86 21.3 4.36 4.68 2 10.00 35.0 8675.95 0.00 1741.40 0.94 13 328.55 122.59 21.3 6.92 7.43 2 10.00 35.0 14097.76 0.00 1783.39 0.94 14 335.47 102.36 20.2 5.69 6.06 2 10.00 35.0 11770.98 0.00 1826.36 0.94 15 341.16 103.45 20.2 5.69 6.06 2 10.00 35.0 11896.85 0.00 1845.85 0.94 16 346.85 104.93 19.0 5.73 6.06 2 10.00 35.0 12066.54 0.00 1872.51 0.94 17 352.57 105.29 19.0 5.73 6.06 2 10.00 35.0 12108.34 0.00 1879.00 0.94 18 0.94 19 0.94 20 0.94 21 0.94 22 0.94 23 0.94 24 0.94 25 0.94 26 0.95 27 0.95 28 0.95 29 0.95 30 0.95 31 0.95 32 0.96 33 0.96 34 0.96 35 0.96 36 0.96 37 0.96 38 0.97 39 0.97 358.30 364.07 369.83 375.63 381.44 387.27 393.11 398.98 404.85 410.74 416.64 422.56 428.49 434.43 440.38 446.35 452.32 458.31 464.30 470.31 476.31 482.34 106.00 105.62 105.53 104.40 103.50 101.61 99.88 97.23 94.67 91.25 87.84 83.64 79.39 74.41 69.31 63.55 57.60 51.07 44.27 36.95 29.32 21.23 17.8 5.77 17.8 16.7 16.7 15.5 15.5 14.4 14.4 13.2 13.2 12.1 12.1 10.9 10.9 9.7 9.7 8.6 8.6 7.4 7.4 6.3 6.3 5.77 5.80 5.80 5.84 5.84 5.87 5.87 5.90 5.90 5.92 5.92 5.95 5.95 5.97 5.97 5.99 5.99 6.01 6.01 6.02 6.02 6.06 2 10.00 35.0 12189.70 6.06 2 10.00 35.0 12145.92 6.06 2 10.00 35.0 12135.50 6.06 2 10.00 35.0 12005.56 6.06 2 10.00 35.0 11902.03 6.06 2 10.00 35.0 11685.08 6.06 2 10.00 35.0 11486.64 6.06 2 10.00 35.0 11181.53 6.06 2 10.00 35.0 10887.02 6.06 2 10.00 35.0 10493.63 6.06 2 10.00 35.0 10101.64 6.06 2 10.00 35.0 9618.99 6.06 2 10.00 35.0 9129.82 6.06 2 10.00 35.0 8557.64 6.06 2 10.00 35.0 7970.71 6.06 2 10.00 35.0 7308.64 6.06 2 10.00 35.0 6624.21 6.06 2 10.00 35.0 5872.50 6.06 2 10.00 35.0 5091.36 6.06 2 10.00 35.0 4249.80 6.06 2 10.00 35.0 3372.19 6.06 2 10.00 35.0 2441.42 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1892.60 1885.80 1886.06 1865.84 1852.24 1818.45 1790.78 1743.13 1700.86 1639.41 1582.22 1506.62 1434.27 1344.36 1256.42 1151.99 1048.09 929.08 808.88 675.10 538.15 389.45 40 488.36 12.53 5.1 5.85 5.88 2 10.00 35.0 1440.55 0.00 237.97 0.97 41 494.21 4.16 5.1 6.21 6.24 2 10.00 35.0 478.31 0.00 74.13 0.97 X -S Area: 2780.75 Path Length: 230.18 X -S Weight: 317244.09 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS6-Mining.gmf Processed: 29 Feb 2024 16:17:22 DATA: Analysis 1 - SS -6 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (13 points) Material beneath: 1 - Overburden/Clay 0.00 4762.16 230.00 4760.97 261.50 Profile: 2 258.50 Profile: 3 0.00 Profile: 4 261.50 Profile: 5 0.00 4699.71 600.00 Profile: 6 0.00 4697.71 600.00 4762.00 4762.92 4760.97 (2 points) 4760.97 (2 points) 4758.50 (3 points) 4758.50 (6 points) 4700.16 4700.00 (6 points) 4698.16 4698.00 Slope Surface (16 points) 4762.00 4762.92 4760.97 4700.00 0.00 4762.16 230.00 4760.97 261.50 4699.71 600.00 130.70 234.60 275.49 4762.00 4763.00 4760.88 170.00 235.91 282.61 Material beneath: 6 - Slurry Wall 261.50 4760.97 Material beneath: 2 - Sand and Gravel 258.50 4758.50 Material beneath: 2 - Sand and Gravel 282.61 4758.50 460.48 4699.21 Material beneath: 4 - Stable Siltstone Bedrock 72.73 4700.16 260.00 4700.10 4762.14 4761.99 4758.50 Material beneath: 3 - Stable Claystone Bedrock 72.73 4698.16 260.00 4698.10 Phreatic Surface (6 points) 0.00 4699.71 600.00 Failure Surface 4744.00 4700.00 130.70 234.60 275.49 4762.00 4763.00 4760.88 258.50 4744.00 170.00 235.91 282.61 4762.14 4761.99 4758.50 261.50 4700.10 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Variable Restraints Parameter descriptor: 230.00 432.88 YL: YC: XL 4762.92 5048.12 XR: XR R 460.48 YR: Radius: R: 200.00 244.99 460.48 460.48 200.00 244.99 460.48 460.48 4699.21 350.00 4762.00 218.20 4761.13 258.50 4699.21 4697.21 4762.00 4761.13 4699.21 4699.21 510.84 510.84 218.20 258.50 510.84 510.84 Range of variation: 10.00 Trial positions within range: 20 10.00 350.00 20 50 RESULTS: Analysis 1 - SS -6 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.494 Analysis Summary There were: 16585 successful analyses from a total of 20001 trial failure surfaces 3416 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.46 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 233.95 4762.99 460.74 4699.21 485.84 5223.61 525.00 2.457 <-- Critical Surface 2 233.95 4762.99 460.22 4699.30 485.72 5223.68 525.00 2.457 3 233.95 4762.99 460.74 4699.21 483.86 5216.55 517.86 2.458 4 233.95 4762.99 460.22 4699.30 483.74 5216.62 517.86 2.458 5 233.95 4762.99 459.69 4699.47 485.42 5223.84 525.00 2.458 6 233.95 4762.99 460.74 4699.21 481.87 5209.49 510.71 2.459 7 233.95 4762.99 460.22 4699.30 481.75 5209.56 510.71 2.459 8 233.95 4762.99 459.69 4699.47 483.44 5216.79 517.86 2.459 9 233.95 4762.99 459.16 4699.65 485.12 5224.01 525.00 2.460 10 233.95 4762.99 460.74 4699.21 479.88 5202.42 503.57 2.460 11 233.95 4762.99 460.22 4699.30 479.76 5202.49 503.57 2.460 12 233.95 4762.99 459.69 4699.47 481.45 5209.72 510.71 2.460 13 233.95 4762.99 459.16 4699.65 483.14 5216.95 517.86 2.460 14 233.95 4762.99 458.64 4699.82 484.82 5224.17 525.00 2.461 15 233.95 4762.99 460.74 4699.21 477.89 5195.34 496.43 2.461 16 233.95 4762.99 459.69 4699.47 479.46 5202.66 503.57 2.461 17 233.95 4762.99 459.16 4699.65 481.15 5209.89 510.71 2.461 18 233.95 4762.99 460.22 4699.30 477.77 5195.42 496.43 2.461 19 233.95 4762.99 458.64 4699.82 482.83 5217.12 517.86 2.461 20 233.95 4762.99 458.11 4700.00 484.52 5224.33 525.00 2.462 21 233.95 4762.99 460.74 4699.21 475.90 5188.26 489.29 2.462 22 233.42 4762.98 460.74 4699.21 485.25 5223.64 525.00 2.462 23 233.95 4762.99 459.16 4699.65 479.16 5202.82 503.57 2.462 24 233.95 4762.99 458.64 4699.82 480.85 5210.06 510.71 2.462 25 233.95 4762.99 459.69 4699.47 477.47 5195.58 496.43 2.462 26 233.95 4762.99 458.11 4700.00 482.53 5217.28 517.86 2.463 27 233.95 4762.99 460.22 4699.30 475.77 5188.34 489.29 2.463 28 233.42 4762.98 460.22 4699.30 485.13 5223.71 525.00 2.463 29 233.95 4762.99 457.59 4700.17 484.21 5224.50 525.00 2.463 30 233.42 4762.98 460.74 4699.21 483.27 5216.58 517.86 2.463 31 233.95 4762.99 458.64 4699.82 478.86 5202.99 503.57 2.463 32 233.95 4762.99 460.74 4699.21 473.91 5181.18 482.14 2.463 33 233.95 4762.99 459.16 4699.65 477.17 5195.75 496.43 2.463 34 233.95 4762.99 458.11 4700.00 480.55 5210.22 510.71 2.463 35 233.42 4762.98 460.22 4699.30 483.14 5216.65 517.86 2.463 36 233.95 4762.99 459.69 4699.47 475.48 5188.50 489.29 2.464 37 233.95 4762.99 457.59 4700.17 482.23 5217.45 517.86 2.464 38 233.42 4762.98 459.69 4699.47 484.82 5223.87 525.00 2.464 39 233.95 4762.99 460.22 4699.30 473.78 5181.25 482.14 2.464 40 233.95 4762.99 457.06 4700.35 483.91 5224.66 525.00 2.464 41 233.42 4762.98 460.74 4699.21 481.28 5209.51 510.71 2.464 42 233.95 4762.99 458.11 4700.00 478.56 5203.16 503.57 2.464 43 233.95 4762.99 458.64 4699.82 476.88 5195.92 496.43 2.464 44 233.42 4762.98 460.22 4699.30 481.16 5209.58 510.71 2.464 45 233.95 4762.99 457.59 4700.17 480.25 5210.39 510.71 2.464 46 233.42 4762.98 459.69 4699.47 482.84 5216.81 517.86 2.465 47 233.95 4762.99 459.16 4699.65 475.18 5188.67 489.29 2.465 48 233.95 4762.99 457.06 4700.35 481.93 5217.61 517.86 2.465 49 233.42 4762.98 459.16 4699.65 484.52 5224.04 525.00 2.465 50 233.95 4762.99 460.74 4699.21 471.91 5174.08 475.00 2.465 51 233.95 4762.99 459.69 4699.47 473.48 5181.42 482.14 2.465 52 233.95 4762.99 456.53 4700.53 483.61 5224.83 525.00 2.465 53 233.42 4762.98 460.74 4699.21 479.30 5202.44 503.57 2.465 54 233.95 4762.99 460.22 4699.30 471.78 5174.16 475.00 2.465 55 233.95 4762.99 458.11 4700.00 476.58 5196.08 496.43 2.465 56 233.95 4762.99 457.59 4700.17 478.27 5203.32 503.57 2.465 57 233.42 4762.98 460.22 4699.30 479.18 5202.51 503.57 2.465 58 233.42 4762.98 459.69 4699.47 480.86 5209.75 510.71 2.465 59 233.95 4762.99 457.06 4700.35 479.95 5210.55 510.71 2.466 60 233.95 4762.99 458.64 4699.82 474.89 5188.84 489.29 2.466 61 233.42 4762.98 459.16 4699.65 482.54 5216.98 517.86 2.466 62 233.95 4762.99 459.16 4699.65 473.19 5181.59 482.14 2.466 63 233.95 4762.99 456.53 4700.53 481.63 5217.77 517.86 2.466 64 233.42 4762.98 458.64 4699.82 484.22 5224.20 525.00 2.466 65 233.95 4762.99 456.01 4700.70 483.30 5224.99 525.00 2.466 66 233.95 4762.99 459.69 4699.47 471.49 5174.33 475.00 2.466 67 233.42 4762.98 460.74 4699.21 477.32 5195.36 496.43 2.466 68 233.95 4762.99 460.74 4699.21 469.92 5166.98 467.86 2.466 69 233.95 4762.99 461.27 4699.22 469.89 5167.00 467.86 2.466 70 233.42 4762.98 459.69 4699.47 478.88 5202.68 503.57 2.467 71 233.95 4762.99 457.59 4700.17 476.28 5196.25 496.43 2.467 72 233.95 4762.99 457.06 4700.35 477.97 5203.49 503.57 2.467 73 233.42 4762.98 459.16 4699.65 480.56 5209.91 510.71 2.467 74 233.42 4762.98 460.22 4699.30 477.19 5195.44 496.43 2.467 75 233.95 4762.99 460.22 4699.30 469.78 5167.06 467.86 2.467 76 233.95 4762.99 458.11 4700.00 474.59 5189.01 489.29 2.467 77 233.95 4762.99 456.53 4700.53 479.65 5210.72 510.71 2.467 78 233.42 4762.98 458.64 4699.82 482.24 5217.14 517.86 2.467 79 233.95 4762.99 458.64 4699.82 472.89 5181.76 482.14 2.467 80 233.95 4762.99 456.01 4700.70 481.33 5217.94 517.86 2.467 81 233.42 4762.98 458.11 4700.00 483.92 5224.36 525.00 2.467 82 233.95 4762.99 459.16 4699.65 471.20 5174.50 475.00 2.467 83 233.95 4762.99 455.48 4700.88 483.00 5225.15 525.00 2.467 84 232.89 4762.97 460.74 4699.21 484.65 5223.67 525.00 2.467 85 233.42 4762.98 460.74 4699.21 475.33 5188.28 489.29 2.467 86 233.42 4762.98 459.16 4699.65 478.58 5202.85 503.57 2.468 87 233.95 4762.99 459.69 4699.47 469.49 5167.23 467.86 2.468 88 233.95 4762.99 457.06 4700.35 475.98 5196.42 496.43 2.468 89 233.95 4762.99 456.53 4700.53 477.67 5203.65 503.57 2.468 90 233.42 4762.98 459.69 4699.47 476.89 5195.60 496.43 2.468 91 233.42 4762.98 458.64 4699.82 480.26 5210.08 510.71 2.468 92 233.95 4762.99 457.59 4700.17 474.29 5189.18 489.29 2.468 93 232.89 4762.97 460.22 4699.30 484.53 5223.73 525.00 2.468 94 233.95 4762.99 460.74 4699.21 467.92 5159.87 460.71 2.468 95 233.95 4762.99 456.01 4700.70 479.35 5210.88 510.71 2.468 96 233.42 4762.98 460.22 4699.30 475.20 5188.35 489.29 2.468 97 233.42 4762.98 458.11 4700.00 481.94 5217.31 517.86 2.468 98 233.95 4762.99 461.27 4699.22 467.89 5159.88 460.71 2.468 99 233.95 4762.99 458.11 4700.00 472.60 5181.92 482.14 2.468 Critical Failure Surface (circle 1) Intersects: XL: 233.95 YL: 4762.99 XR: 460.74 YR: 4699.21 Centre: XC: 485.84 YC: 5223.61 Radius: R: 525.00 Generated failure surface: (20 points) 233.95 4762 99 244.99 4757.12 256.17 4751.52 267.48 4746.18 278.91 4741.11 290.47 4736.32 302.13 4731.81 313.89 4727.57 325.76 4723.61 337.71 4719.94 349.75 4705.91 410.97 4699.21 4716.56 4703.98 361.87 4713.46 374.05 4710.65 423.36 4702.34 435.80 4701.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) 386.30 448.26 4708.13 398.61 4699.96 460.74 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 233.95 0.55 28.0 1.96 2.22 1 50.00 25.0 54.82 0.00 15.55 1.03 2 235.91 9.47 28.0 6.48 7.34 1 50.00 25.0 946.85 0.00 122.84 1.03 3 242.39 8.94 28.0 2.60 2.94 2 10.00 35.0 920.88 0.00 306.12 0.98 4 244.99 30.06 26.6 5.59 6.25 2 10.00 35.0 3239.57 0.00 505.28 0.98 5 250.58 45.36 26.6 5.59 6.25 2 10.00 35.0 5004.21 0.00 781.50 0.98 6 256.17 23.34 25.3 2.33 2.58 2 10.00 35.0 2597.27 0.00 981.05 0.97 7 258.50 33.79 25.3 3.00 3.32 6 0.00 45.0 3378.66 0.00 944.79 0.93 8 261.50 79.90 25.3 5.98 6.61 2 10.00 35.0 8969.10 0.00 1320.33 0.97 9 267.48 62.58 23.9 4.00 4.38 2 10.00 35.0 7051.89 0.00 1561.82 0.97 10 271.49 69.59 23.9 4.00 4.38 2 10.00 35.0 7858.75 0.00 1740.70 0.97 11 275.49 63.13 23.9 3.42 3.75 2 10.00 35.0 7166.75 0.00 1856.83 0.97 12 278.91 69.38 22.5 3.70 4.00 2 10.00 35.0 7944.35 0.00 1920.70 0.97 13 282.61 74.94 22.5 3.93 4.25 2 10.00 35.0 8618.20 0.00 1960.78 0.97 14 286.54 76.20 22.5 3.93 4.25 2 10.00 35.0 8762.88 0.00 1993.66 0.97 15 290.47 114.97 21.2 5.83 6.25 2 10.00 35.0 13221.78 0.00 2040.72 0.97 16 296.30 116.80 21.2 5.83 6.25 2 10.00 35.0 13432.31 0.00 2073.24 0.97 17 302.13 119.24 19.8 5.88 6.25 2 10.00 35.0 13712.16 0.00 2112.50 0.96 18 0.96 19 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.96 31 0.97 32 0.97 33 0.97 34 0.97 35 0.97 36 0.97 37 0.98 38 0.98 39 0.98 308.01 313.89 319.83 325.76 331.74 337.71 343.73 349.75 355.81 361.87 367.96 374.05 380.18 386.30 392.46 398.61 404.79 410.97 417.16 423.36 429.58 435.80 120.16 121.62 121.62 122.09 121.15 120.58 118.70 117.08 114.23 111.55 107.73 103.97 99.18 94.34 88.56 82.64 75.88 68.88 61.14 53.08 44.36 35.25 19.8 5.88 18.4 18.4 17.1 17.1 15.7 15.7 14.3 14.3 13.0 13.0 11.6 11.6 10.2 10.2 8.9 8.9 7.5 7.5 6.2 6.2 4.8 5.93 5.93 5.98 5.98 6.02 6.02 6.06 6.06 6.09 6.09 6.12 6.12 6.15 6.15 6.18 6.18 6.20 6.20 6.22 6.22 6.23 6.25 2 10.00 35.0 13818.60 6.25 2 10.00 35.0 13986.49 6.25 2 10.00 35.0 13986.49 6.25 2 10.00 35.0 14039.86 6.25 2 10.00 35.0 13931.85 6.25 2 10.00 35.0 13867.09 6.25 2 10.00 35.0 13650.16 6.25 2 10.00 35.0 13464.27 6.25 2 10.00 35.0 13136.00 6.25 2 10.00 35.0 12828.01 6.25 2 10.00 35.0 12388.69 6.25 2 10.00 35.0 11957.12 6.25 2 10.00 35.0 11405.17 6.25 2 10.00 35.0 10848.71 6.25 2 10.00 35.0 10184.29 6.25 2 10.00 35.0 9503.20 6.25 2 10.00 35.0 8726.12 6.25 2 10.00 35.0 7921.22 6.25 2 10.00 35.0 7031.11 6.25 2 10.00 35.0 6103.83 6.25 2 10.00 35.0 5101.59 6.25 2 10.00 35.0 4053.51 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2128.90 2152.03 2152.03 2158.70 2142.07 2131.71 2098.34 2070.66 2020.19 1974.68 1907.03 1843.43 1758.25 1676.05 1573.36 1472.05 1351.63 1230.96 1092.60 952.12 795.74 635.02 40 442.03 25.56 4.8 6.23 6.25 2 10.00 35.0 2939.10 0.00 460.35 0.98 41 448.26 15.15 3.4 6.08 6.09 2 10.00 35.0 1742.31 0.00 281.67 0.99 42 454.34 5.04 3.4 6.41 6.42 2 10.00 35.0 579.18 0.00 88.65 0.98 X -S Area: 3147.75 Path Length: 237.61 X -S Weight: 360074.38 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS6-Mining-Pseudo Static.gmf Processed: 29 Feb 2024 16:22:20 DATA: Analysis 1 - SS -6 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (13 points) 0.00 4762.00 4762.16 230.00 4762.92 4760.97 261.50 4760.97 Profile: 2 (2 points) 258.50 4760.97 Profile: 3 (2 points) 0.00 4758.50 Profile: 4 (3 points) 261.50 4758.50 Profile: 5 (6 points) 0.00 4700.16 4699.71 600.00 4700.00 Profile: 6 (6 points) 0.00 4698.16 4697.71 600.00 4698.00 Slope Surface (16 points) 0.00 4762.00 4762.16 230.00 4762.92 4760.97 261.50 4760.97 4699.71 600.00 4700.00 Material beneath: 1 - Overburden/Clay 130.70 4762.00 170.00 234.60 4763.00 235.91 275.49 4760.88 282.61 Material beneath: 6 - Slurry Wall 261.50 4760.97 Material beneath: 2 - Sand and Gravel 258.50 4758.50 Material beneath: 2 - Sand and Gravel 282.61 4758.50 460.48 4699.21 Material beneath: 4 - Stable Siltstone Bedrock 72.73 4700.16 260.00 4700.10 4762.14 4761.99 4758.50 Material beneath: 3 - Stable Claystone Bedrock 72.73 4698.16 260.00 4698.10 Phreatic Surface (6 points) 0.00 4699.71 600.00 Failure Surface 4744.00 4700.00 130.70 234.60 275.49 4762.00 4763.00 4760.88 258.50 4744.00 170.00 235.91 282.61 4762.14 4761.99 4758.50 261.50 4700.10 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 230.00 YL: 4762.92 XR: 460.48 YR: Centre: XC: 432.88 YC: 5048.12 Radius: R: Earthquake Force 200.00 4762.00 218.20 244.99 4761.13 460.48 460.48 200.00 244.99 460.48 460.48 4699.21 350.00 4699.21 4697.21 4762.00 4761.13 4699.21 4699.21 258.50 510.84 510.84 218.20 258.50 510.84 510.84 Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 350.00 20 20 50 RESULTS: Analysis 1 - SS -6 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.795 Analysis Summary There were: 16585 successful analyses from a total of 20001 trial failure surfaces 3416 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.95 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 233.95 4762.99 460.74 4699.21 485.84 5223.61 525.00 1.949 <-- Critical Surface 2 233.95 4762.99 460.22 4699.30 485.72 5223.68 525.00 1.950 3 233.95 4762.99 460.74 4699.21 483.86 5216.55 517.86 1.950 4 233.95 4762.99 459.69 4699.47 485.42 5223.84 525.00 1.950 5 233.95 4762.99 460.22 4699.30 483.74 5216.62 517.86 1.950 6 233.95 4762.99 459.16 4699.65 485.12 5224.01 525.00 1.951 7 233.95 4762.99 460.74 4699.21 481.87 5209.49 510.71 1.951 8 233.95 4762.99 459.69 4699.47 483.44 5216.79 517.86 1.951 9 233.95 4762.99 460.22 4699.30 481.75 5209.56 510.71 1.951 10 233.95 4762.99 458.64 4699.82 484.82 5224.17 525.00 1.952 11 233.95 4762.99 459.16 4699.65 483.14 5216.95 517.86 1.952 12 233.95 4762.99 459.69 4699.47 481.45 5209.72 510.71 1.952 13 233.95 4762.99 460.74 4699.21 479.88 5202.42 503.57 1.952 14 233.95 4762.99 460.22 4699.30 479.76 5202.49 503.57 1.952 15 233.95 4762.99 458.11 4700.00 484.52 5224.33 525.00 1.952 16 233.95 4762.99 458.64 4699.82 482.83 5217.12 517.86 1.952 17 233.95 4762.99 459.16 4699.65 481.15 5209.89 510.71 1.953 18 233.42 4762.98 460.74 4699.21 485.25 5223.64 525.00 1.953 19 233.95 4762.99 459.69 4699.47 479.46 5202.66 503.57 1.953 20 233.95 4762.99 457.59 4700.17 484.21 5224.50 525.00 1.953 21 233.95 4762.99 460.74 4699.21 477.89 5195.34 496.43 1.953 22 233.42 4762.98 460.22 4699.30 485.13 5223.71 525.00 1.953 23 233.95 4762.99 458.11 4700.00 482.53 5217.28 517.86 1.953 24 233.95 4762.99 460.22 4699.30 477.77 5195.42 496.43 1.953 25 233.95 4762.99 458.64 4699.82 480.85 5210.06 510.71 1.953 26 233.95 4762.99 459.16 4699.65 479.16 5202.82 503.57 1.954 27 233.42 4762.98 460.74 4699.21 483.27 5216.58 517.86 1.954 28 233.95 4762.99 457.06 4700.35 483.91 5224.66 525.00 1.954 29 233.42 4762.98 459.69 4699.47 484.82 5223.87 525.00 1.954 30 233.95 4762.99 457.59 4700.17 482.23 5217.45 517.86 1.954 31 233.42 4762.98 460.22 4699.30 483.14 5216.65 517.86 1.954 32 233.95 4762.99 459.69 4699.47 477.47 5195.58 496.43 1.954 33 233.95 4762.99 458.11 4700.00 480.55 5210.22 510.71 1.954 34 233.95 4762.99 460.74 4699.21 475.90 5188.26 489.29 1.954 35 233.95 4762.99 458.64 4699.82 478.86 5202.99 503.57 1.954 36 233.95 4762.99 460.22 4699.30 475.77 5188.34 489.29 1.954 37 233.95 4762.99 456.53 4700.53 483.61 5224.83 525.00 1.954 38 233.42 4762.98 459.16 4699.65 484.52 5224.04 525.00 1.954 39 233.95 4762.99 457.06 4700.35 481.93 5217.61 517.86 1.954 40 233.42 4762.98 460.74 4699.21 481.28 5209.51 510.71 1.955 41 233.95 4762.99 459.16 4699.65 477.17 5195.75 496.43 1.955 42 233.42 4762.98 459.69 4699.47 482.84 5216.81 517.86 1.955 43 233.95 4762.99 457.59 4700.17 480.25 5210.39 510.71 1.955 44 233.42 4762.98 460.22 4699.30 481.16 5209.58 510.71 1.955 45 233.95 4762.99 458.11 4700.00 478.56 5203.16 503.57 1.955 46 233.95 4762.99 459.69 4699.47 475.48 5188.50 489.29 1.955 47 233.95 4762.99 456.01 4700.70 483.30 5224.99 525.00 1.955 48 233.42 4762.98 458.64 4699.82 484.22 5224.20 525.00 1.955 49 233.95 4762.99 458.64 4699.82 476.88 5195.92 496.43 1.955 50 233.95 4762.99 456.53 4700.53 481.63 5217.77 517.86 1.955 51 233.95 4762.99 460.74 4699.21 473.91 5181.18 482.14 1.955 52 233.42 4762.98 459.16 4699.65 482.54 5216.98 517.86 1.955 53 233.95 4762.99 457.06 4700.35 479.95 5210.55 510.71 1.955 54 233.42 4762.98 459.69 4699.47 480.86 5209.75 510.71 1.955 55 233.95 4762.99 460.22 4699.30 473.78 5181.25 482.14 1.955 56 233.42 4762.98 460.74 4699.21 479.30 5202.44 503.57 1.955 57 233.95 4762.99 457.59 4700.17 478.27 5203.32 503.57 1.956 58 233.95 4762.99 459.16 4699.65 475.18 5188.67 489.29 1.956 59 233.42 4762.98 460.22 4699.30 479.18 5202.51 503.57 1.956 60 233.42 4762.98 458.11 4700.00 483.92 5224.36 525.00 1.956 61 233.95 4762.99 455.48 4700.88 483.00 5225.15 525.00 1.956 62 233.95 4762.99 458.11 4700.00 476.58 5196.08 496.43 1.956 63 233.95 4762.99 456.01 4700.70 481.33 5217.94 517.86 1.956 64 233.42 4762.98 458.64 4699.82 482.24 5217.14 517.86 1.956 65 233.95 4762.99 456.53 4700.53 479.65 5210.72 510.71 1.956 66 233.95 4762.99 459.69 4699.47 473.48 5181.42 482.14 1.956 67 233.42 4762.98 459.16 4699.65 480.56 5209.91 510.71 1.956 68 232.89 4762.97 460.74 4699.21 484.65 5223.67 525.00 1.956 69 233.95 4762.99 457.06 4700.35 477.97 5203.49 503.57 1.956 70 233.95 4762.99 458.64 4699.82 474.89 5188.84 489.29 1.956 71 233.42 4762.98 459.69 4699.47 478.88 5202.68 503.57 1.956 72 233.95 4762.99 460.74 4699.21 471.91 5174.08 475.00 1.956 73 232.89 4762.97 460.22 4699.30 484.53 5223.73 525.00 1.956 74 233.42 4762.98 460.74 4699.21 477.32 5195.36 496.43 1.956 75 233.95 4762.99 457.59 4700.17 476.28 5196.25 496.43 1.956 76 233.42 4762.98 457.59 4700.17 483.61 5224.53 525.00 1.956 77 233.95 4762.99 455.48 4700.88 481.02 5218.10 517.86 1.957 78 233.42 4762.98 458.11 4700.00 481.94 5217.31 517.86 1.957 79 233.95 4762.99 460.22 4699.30 471.78 5174.16 475.00 1.957 80 233.95 4762.99 459.16 4699.65 473.19 5181.59 482.14 1.957 81 233.95 4762.99 456.01 4700.70 479.35 5210.88 510.71 1.957 82 233.42 4762.98 460.22 4699.30 477.19 5195.44 496.43 1.957 83 233.42 4762.98 458.64 4699.82 480.26 5210.08 510.71 1.957 84 233.95 4762.99 458.11 4700.00 474.59 5189.01 489.29 1.957 85 233.95 4762.99 456.53 4700.53 477.67 5203.65 503.57 1.957 86 232.89 4762.97 460.74 4699.21 482.68 5216.60 517.86 1.957 87 233.42 4762.98 459.16 4699.65 478.58 5202.85 503.57 1.957 88 232.89 4762.97 459.69 4699.47 484.23 5223.90 525.00 1.957 89 233.95 4762.99 457.06 4700.35 475.98 5196.42 496.43 1.957 90 233.42 4762.98 457.06 4700.35 483.31 5224.69 525.00 1.957 91 233.95 4762.99 459.69 4699.47 471.49 5174.33 475.00 1.957 92 232.89 4762.97 460.22 4699.30 482.55 5216.67 517.86 1.957 93 233.42 4762.98 457.59 4700.17 481.64 5217.47 517.86 1.957 94 233.95 4762.99 458.64 4699.82 472.89 5181.76 482.14 1.957 95 233.42 4762.98 459.69 4699.47 476.89 5195.60 496.43 1.957 96 233.95 4762.99 455.48 4700.88 479.05 5211.05 510.71 1.957 97 233.42 4762.98 458.11 4700.00 479.96 5210.25 510.71 1.957 98 233.95 4762.99 457.59 4700.17 474.29 5189.18 489.29 1.957 99 233.42 4762.98 460.74 4699.21 475.33 5188.28 489.29 1.958 Critical Failure Surface (circle 1) Intersects: XL: 233.95 Centre: XC: 485.84 YL: YC: 4762.99 5223.61 XR: 460.74 YR: 4699.21 Radius: R: 525.00 Generated failure surface: (20 points) 233.95 4762.99 244.99 4757.12 256.17 4751.52 267.48 4746.18 278.91 4741.11 290.47 4736.32 302.13 4731.81 313.89 4727.57 325.76 4723.61 337.71 4719.94 349.75 4716.56 361.87 4713.46 374.05 4710.65 386.30 4708.13 398.61 4705.91 410.97 4703.98 423.36 4702.34 435.80 4701.00 448.26 4699.96 460.74 4699.21 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 233.95 0.55 28.0 1.96 2.22 1 50.00 25.0 54.82 0.00 12.69 1.00 2 235.91 9.47 28.0 6.48 7.34 1 50.00 25.0 946.85 0.00 117.48 1.00 3 242.39 8.94 28.0 2.60 2.94 2 10.00 35.0 920.88 0.00 295.51 0.95 4 244.99 30.06 26.6 5.59 6.25 2 10.00 35.0 3239.57 0.00 488.89 0.95 5 250.58 45.36 26.6 5.59 6.25 2 10.00 35.0 5004.21 0.00 756.41 0.95 6 256.17 23.34 25.3 2.33 2.58 2 10.00 35.0 2597.27 0.00 951.25 0.95 7 258.50 33.79 25.3 3.00 3.32 6 0.00 45.0 3378.66 0.00 906.74 0.89 8 261.50 79.90 25.3 5.98 6.61 2 10.00 35.0 8969.10 0.00 1280.37 0.95 9 267.48 62.58 23.9 4.00 4.38 2 10.00 35.0 7051.89 0.00 1517.11 0.94 10 271.49 69.59 23.9 4.00 4.38 2 10.00 35.0 7858.75 0.00 1690.92 0.94 11 275.49 63.13 23.9 3.42 3.75 2 10.00 35.0 7166.75 0.00 1803.75 0.94 12 278.91 69.38 22.5 3.70 4.00 2 10.00 35.0 7944.35 0.00 1868.86 0.94 13 282.61 74.94 22.5 3.93 4.25 2 10.00 35.0 8618.20 0.00 1907.87 0.94 14 286.54 76.20 22.5 3.93 4.25 2 10.00 35.0 8762.88 0.00 1939.86 0.94 15 290.47 114.97 21.2 5.83 6.25 2 10.00 35.0 13221.78 0.00 1988.88 0.94 16 296.30 116.80 21.2 5.83 6.25 2 10.00 35.0 13432.31 0.00 2020.58 0.94 17 302.13 119.24 19.8 5.88 6.25 2 10.00 35.0 13712.16 0.00 2062.18 0.94 18 308.01 120.16 19.8 5.88 6.25 2 10.00 35.0 13818.60 0.00 2078.19 0.94 19 313.89 121.62 18.4 5.93 6.25 2 10.00 35.0 13986.49 0.00 2104.16 0.94 20 319.83 121.62 18.4 5.93 6.25 2 10.00 35.0 13986.49 0.00 2104.16 0.94 21 325.76 122.09 17.1 5.98 6.25 2 10.00 35.0 14039.86 0.00 2114.10 0.94 22 331.74 121.15 17.1 5.98 6.25 2 10.00 35.0 13931.85 0.00 2097.81 0.94 23 337.71 120.58 15.7 6.02 6.25 2 10.00 35.0 13867.09 0.00 2091.03 0.94 24 343.73 118.70 15.7 6.02 6.25 2 10.00 35.0 13650.16 0.00 2058.29 0.94 25 349.75 117.08 14.3 6.06 6.25 2 10.00 35.0 13464.27 0.00 2034.42 0.95 26 355.81 114.23 14.3 6.06 6.25 2 10.00 35.0 13136.00 0.00 1984.85 0.95 27 361.87 111.55 13.0 6.09 6.25 2 10.00 35.0 12828.01 0.00 1943.26 0.95 28 367.96 107.73 13.0 6.09 6.25 2 10.00 35.0 12388.69 0.00 1876.68 0.95 29 374.05 103.97 11.6 6.12 6.25 2 10.00 35.0 11957.12 0.00 1817.05 0.95 30 380.18 99.18 11.6 6.12 6.25 2 10.00 35.0 11405.17 0.00 1733.08 0.95 31 386.30 94.34 10.2 6.15 6.25 2 10.00 35.0 10848.71 0.00 1654.75 0.95 32 392.46 88.56 10.2 6.15 6.25 2 10.00 35.0 10184.29 0.00 1553.36 0.95 33 398.61 82.64 8.9 6.18 6.25 2 10.00 35.0 9503.20 0.00 1455.73 0.96 34 404.79 75.88 8.9 6.18 6.25 2 10.00 35.0 8726.12 0.00 1336.63 0.96 35 410.97 68.88 7.5 6.20 6.25 2 10.00 35.0 7921.22 0.00 1219.31 0.96 36 417.16 61.14 7.5 6.20 6.25 2 10.00 35.0 7031.11 0.00 1082.26 0.96 37 423.36 53.08 6.2 6.22 6.25 2 10.00 35.0 6103.83 0.00 944.68 0.97 38 429.58 44.36 6.2 6.22 6.25 2 10.00 35.0 5101.59 0.00 789.50 0.97 39 435.80 35.25 4.8 6.23 6.25 2 10.00 35.0 4053.51 0.00 631.11 0.97 40 442.03 25.56 4.8 6.23 6.25 2 10.00 35.0 2939.10 0.00 457.48 0.97 41 448.26 15.15 3.4 6.08 6.09 2 10.00 35.0 1742.31 0.00 280.39 0.98 42 454.34 5.04 3.4 6.41 6.42 2 10.00 35.0 579.18 0.00 88.20 0.98 X -S Area: 3147.75 Path Length: 237.61 X -S Weight: 360074.38 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7N-Mining.gmf Processed: 04 Mar 2024 10:37:11 DATA: Analysis 1 - SS -7N - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 260.00 4754.07 297.25 4756.01 357.46 Profile: 2 341.16 Profile: 3 260.00 Profile: 4 344.16 Profile: 5 260.00 4698.69 Profile: 6 260.00 4685.69 4758.00 4755.96 4756.00 (2 points) 4756.01 (2 points) 4752.00 (3 points) 4752.00 (5 points) 4698.71 (5 points) 4685.69 Slope Surface (15 points) 4758.00 4755.96 4756.00 260.00 4754.07 297.25 4756.01 357.46 4698.69 274.00 302.42 369.76 4757.98 4758.00 4752.00 280.30 319.91 4756.02 285.75 4757.00 341.16 Material beneath: 6 - Slurry Wall 344.16 4756.01 Material beneath: 2 - Sand and Gravel 341.16 4752.00 Material beneath: 2 - Sand and Gravel 369.76 4752.00 529.88 4698.63 Material beneath: 3 - Stable Claystone Bedrock 342.60 4698.71 529.88 4698.63 Material beneath: 5 - Stable Sandstone Bedrock 342.60 4685.69 529.88 4685.69 Phreatic Surface (6 points) 260.00 4698.69 600.00 Failure Surface 4738.00 4698.69 274.00 302.42 369.76 4757.98 4758.00 4752.00 341.16 4738.00 280.30 319.91 529.88 4756.02 4757.00 4698.63 344.16 4698.71 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Variable Restraints 302.42 499.41 Parameter descriptor: Range of variation: Trial positions within range: YL: YC: XL 10.00 20 4758.00 5047.30 XR: XR R 10.00 350.00 20 50 529.88 YR: Radius: R: 555.95 555.95 285.75 341.16 555.95 529.88 4698.63 350.00 4754.54 291.85 4756.01 344.16 4698.69 4685.69 4754.54 4756.01 4698.69 4698.63 600.00 600.00 291.85 344.16 600.00 555.95 RESULTS: Analysis 1 - SS -7N - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.708 Analysis Summary There were: 18251 successful analyses from a total of 20001 trial failure surfaces 1750 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.60 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 307.42 4757.71 530.14 4698.63 550.12 5223.25 525.00 2.596 <-- Critical Surface 2 307.42 4757.71 530.14 4698.63 548.24 5216.17 517.86 2.597 3 307.42 4757.71 529.62 4698.72 549.98 5223.32 525.00 2.597 4 307.42 4757.71 530.14 4698.63 546.36 5209.09 510.71 2.598 5 307.42 4757.71 529.62 4698.72 548.10 5216.25 517.86 2.598 6 307.42 4757.71 528.56 4699.07 547.46 5216.58 517.86 2.598 7 307.42 4757.71 529.09 4698.89 544.02 5202.24 503.57 2.598 8 307.42 4757.71 529.62 4698.72 540.57 5187.88 489.29 2.599 9 306.89 4757.74 530.14 4698.63 549.61 5223.27 525.00 2.599 10 307.42 4757.71 528.56 4699.07 545.58 5209.50 510.71 2.599 11 307.42 4757.71 530.14 4698.63 544.48 5202.00 503.57 2.599 12 307.42 4757.71 529.62 4698.72 546.22 5209.16 510.71 2.599 13 307.42 4757.71 529.09 4698.89 542.14 5195.15 496.43 2.599 14 307.42 4757.71 528.04 4699.24 549.01 5223.82 525.00 2.599 15 307.42 4757.71 529.09 4698.89 549.66 5223.49 525.00 2.599 16 306.89 4757.74 529.62 4698.72 549.47 5223.34 525.00 2.599 17 306.89 4757.74 530.14 4698.63 547.74 5216.19 517.86 2.600 18 307.42 4757.71 529.62 4698.72 538.68 5180.78 482.14 2.600 19 307.42 4757.71 528.56 4699.07 543.70 5202.41 503.57 2.600 20 307.42 4757.71 528.04 4699.24 547.14 5216.75 517.86 2.600 21 307.42 4757.71 530.67 4698.63 542.57 5194.92 496.43 2.600 22 307.42 4757.71 529.09 4698.89 547.78 5216.41 517.86 2.600 23 307.42 4757.71 529.62 4698.72 544.33 5202.07 503.57 2.600 24 307.42 4757.71 529.09 4698.89 540.25 5188.05 489.29 2.600 25 307.42 4757.71 530.14 4698.63 536.94 5173.58 475.00 2.600 26 307.42 4757.71 530.14 4698.63 542.60 5194.90 496.43 2.600 27 306.89 4757.74 529.62 4698.72 547.59 5216.26 517.86 2.600 28 306.89 4757.74 530.14 4698.63 545.86 5209.10 510.71 2.600 29 307.42 4757.71 528.04 4699.24 545.26 5209.67 510.71 2.601 30 307.42 4757.71 528.56 4699.07 541.82 5195.32 496.43 2.601 31 307.42 4757.71 527.51 4699.42 548.69 5223.99 525.00 2.601 32 307.42 4757.71 529.62 4698.72 536.79 5173.66 475.00 2.601 33 306.89 4757.74 529.62 4698.72 545.72 5209.18 510.71 2.601 34 307.42 4757.71 529.09 4698.89 545.90 5209.33 510.71 2.601 35 306.89 4757.74 529.09 4698.89 549.15 5223.51 525.00 2.601 36 307.42 4757.71 530.67 4698.63 540.69 5187.81 489.29 2.601 37 306.89 4757.74 530.14 4698.63 543.98 5202.01 503.57 2.601 38 307.42 4757.71 528.56 4699.07 549.33 5223.66 525.00 2.601 39 307.42 4757.71 529.62 4698.72 542.45 5194.98 496.43 2.601 40 307.42 4757.71 529.09 4698.89 538.37 5180.95 482.14 2.601 41 307.42 4757.71 530.14 4698.63 540.71 5187.80 489.29 2.601 42 307.42 4757.71 530.14 4698.63 535.05 5166.46 467.86 2.602 43 307.42 4757.71 528.04 4699.24 543.38 5202.58 503.57 2.602 44 307.42 4757.71 527.51 4699.42 546.81 5216.92 517.86 2.602 45 307.42 4757.71 528.56 4699.07 539.94 5188.22 489.29 2.602 46 306.89 4757.74 529.09 4698.89 547.27 5216.43 517.86 2.602 47 306.89 4757.74 529.62 4698.72 543.84 5202.09 503.57 2.602 48 306.89 4757.74 530.14 4698.63 542.10 5194.92 496.43 2.602 49 307.42 4757.71 529.62 4698.72 534.90 5166.54 467.86 2.602 50 306.89 4757.74 530.67 4698.63 542.08 5194.93 496.43 2.602 51 307.42 4757.71 527.51 4699.42 544.94 5209.84 510.71 2.602 52 307.42 4757.71 528.04 4699.24 541.50 5195.49 496.43 2.602 53 307.42 4757.71 530.67 4698.63 538.81 5180.71 482.14 2.603 54 307.42 4757.71 529.09 4698.89 536.48 5173.84 475.00 2.603 55 307.42 4757.71 526.99 4699.59 548.36 5224.16 525.00 2.603 56 306.89 4757.74 529.09 4698.89 545.40 5209.35 510.71 2.603 57 307.42 4757.71 530.14 4698.63 538.83 5180.69 482.14 2.603 58 306.89 4757.74 528.56 4699.07 548.83 5223.68 525.00 2.603 59 307.42 4757.71 528.56 4699.07 538.05 5181.12 482.14 2.603 60 306.89 4757.74 529.62 4698.72 541.96 5194.99 496.43 2.603 61 307.42 4757.71 530.14 4698.63 533.16 5159.33 460.71 2.603 62 307.42 4757.71 530.67 4698.63 533.15 5159.34 460.71 2.603 63 306.89 4757.74 530.14 4698.63 540.22 5187.81 489.29 2.603 64 307.42 4757.71 527.51 4699.42 543.06 5202.75 503.57 2.603 65 306.89 4757.74 530.67 4698.63 540.20 5187.82 489.29 2.603 66 307.42 4757.71 526.99 4699.59 546.49 5217.08 517.86 2.603 67 307.42 4757.71 528.04 4699.24 539.62 5188.39 489.29 2.604 68 306.89 4757.74 528.56 4699.07 546.95 5216.60 517.86 2.604 69 306.89 4757.74 529.09 4698.89 543.52 5202.26 503.57 2.604 70 307.42 4757.71 529.62 4698.72 533.01 5159.42 460.71 2.604 71 307.42 4757.71 529.09 4698.89 534.59 5166.72 467.86 2.604 72 307.42 4757.71 530.67 4698.63 536.92 5173.59 475.00 2.604 73 306.89 4757.74 529.62 4698.72 540.08 5187.89 489.29 2.604 74 306.37 4757.77 530.14 4698.63 549.11 5223.29 525.00 2.604 75 307.42 4757.71 526.99 4699.59 544.62 5210.00 510.71 2.604 76 307.42 4757.71 528.56 4699.07 536.17 5174.01 475.00 2.604 77 307.42 4757.71 527.51 4699.42 541.18 5195.66 496.43 2.604 78 307.42 4757.71 526.46 4699.77 548.04 5224.33 525.00 2.604 79 306.89 4757.74 530.14 4698.63 538.34 5180.70 482.14 2.604 80 306.89 4757.74 528.56 4699.07 545.08 5209.52 510.71 2.604 81 306.89 4757.74 530.67 4698.63 538.32 5180.71 482.14 2.605 82 307.42 4757.71 530.67 4698.63 531.26 5152.20 453.57 2.605 83 307.42 4757.71 530.14 4698.63 531.27 5152.20 453.57 2.605 84 307.42 4757.71 528.04 4699.24 537.74 5181.29 482.14 2.605 85 306.89 4757.74 528.04 4699.24 548.50 5223.84 525.00 2.605 86 306.89 4757.74 529.09 4698.89 541.64 5195.16 496.43 2.605 87 306.37 4757.77 529.62 4698.72 548.97 5223.36 525.00 2.605 88 306.37 4757.77 530.14 4698.63 547.23 5216.21 517.86 2.605 89 307.42 4757.71 526.99 4699.59 542.74 5202.92 503.57 2.605 90 307.42 4757.71 526.46 4699.77 546.17 5217.25 517.86 2.605 91 306.89 4757.74 529.62 4698.72 538.19 5180.78 482.14 2.605 92 307.42 4757.71 527.51 4699.42 539.30 5188.56 489.29 2.605 93 307.42 4757.71 529.62 4698.72 531.12 5152.29 453.57 2.605 94 307.42 4757.71 529.09 4698.89 532.70 5159.59 460.71 2.605 95 306.89 4757.74 528.56 4699.07 543.20 5202.43 503.57 2.605 96 306.89 4757.74 528.04 4699.24 546.63 5216.77 517.86 2.605 97 307.42 4757.71 528.56 4699.07 534.28 5166.89 467.86 2.605 98 307.42 4757.71 530.67 4698.63 535.04 5166.47 467.86 2.605 99 306.37 4757.77 529.62 4698.72 547.09 5216.28 517.86 2.606 Critical Failure Surface (circle 1) Intersects: XL: 307.42 YL: Centre: XC: 550.12 YC: Generated failure surface: (20 points) 307.42 4757 71 318.33 4737.16 363.15 4732.67 374.63 4717.40 421.42 4714.27 433.31 4704.50 4757.71 5223.25 4752.19 4728.45 4711.41 XR: 530.14 YR: 4698.63 Radius: R: 525.00 329.36 4746.92 386.20 4724.50 445.26 4708.83 340.51 397.86 457.27 4741.91 4720.81 4706.53 351.78 409.60 469.32 481.43 4698.63 4702.76 493.57 4701.30 505.74 4700.13 517.93 4699.24 530.14 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 307.42 6.68 26.9 5.45 6.11 1 50.00 25.0 668.14 0.00 103.35 1.03 2 312.87 20.05 26.9 5.45 6.11 1 50.00 25.0 2004.94 0.00 328.02 1.03 3 318.33 8.28 25.5 1.58 1.75 2 10.00 35.0 832.84 0.00 464.58 0.98 4 319.91 31.12 25.5 4.73 5.24 2 10.00 35.0 3231.87 0.00 604.28 0.98 5 324.64 40.74 25.5 4.73 5.24 2 10.00 35.0 4354.39 0.00 814.75 0.98 6 329.36 60.02 24.2 5.58 6.11 2 10.00 35.0 6532.01 0.00 1043.21 0.98 7 334.94 72.55 24.2 5.58 6.11 2 10.00 35.0 7994.43 0.00 1277.09 0.98 8 340.51 54.24 22.9 3.65 3.96 6 0.00 45.0 5423.94 0.00 1279.44 0.93 9 344.16 62.64 22.9 3.81 4.13 2 10.00 35.0 6974.54 0.00 1642.34 0.97 10 347.97 68.75 22.9 3.81 4.13 2 10.00 35.0 7677.22 0.00 1807.96 0.97 11 351.78 113.42 21.5 5.68 6.11 2 10.00 35.0 12702.51 0.00 2019.71 0.97 12 357.46 121.16 21.5 5.69 6.12 2 10.00 35.0 13670.73 0.00 2168.97 0.97 13 363.15 142.84 20.2 6.61 7.04 2 10.00 35.0 16320.45 0.00 2245.97 0.97 14 369.76 106.35 20.2 4.87 5.19 2 10.00 35.0 12230.29 0.00 2284.10 0.97 15 374.63 127.00 18.9 5.79 6.11 2 10.00 35.0 14605.26 0.00 2310.39 0.97 16 380.41 127.28 18.9 5.79 6.11 2 10.00 35.0 14637.09 0.00 2315.48 0.97 17 386.20 128.10 17.5 5.83 6.11 2 10.00 35.0 14731.90 0.00 2327.58 0.97 18 392.03 127.51 17.5 5.83 6.11 2 10.00 35.0 14663.16 0.00 2316.72 0.97 19 0.97 20 0.97 21 0.97 22 0.97 23 0.97 24 0.97 25 0.97 26 0.97 27 0.97 28 0.97 29 0.97 30 0.97 31 0.97 32 0.97 33 0.98 34 0.98 35 0.98 36 0.98 37 0.98 38 0.98 39 0.99 40 0.99 397.86 403.73 409.60 415.51 421.42 427.36 433.31 439.28 445.26 451.26 457.27 463.30 469.32 475.38 481.43 487.50 493.57 499.65 505.74 511.83 517.93 523.88 127.37 125.89 124.77 122.40 120.29 117.01 113.89 109.70 105.56 100.46 95.31 89.29 83.12 76.18 69.01 61.16 52.99 44.23 35.09 25.41 15.06 5.00 16.2 5.87 16.2 14.9 14.9 13.5 13.5 12.2 12.2 10.9 10.9 5.87 5.91 5.91 5.94 5.94 5.98 5.98 6.00 6.00 9.5 6.03 9.5 6.03 8.2 6.05 8.2 6.05 6.9 6.07 6.9 6.07 5.5 6.09 5.5 6.09 4.2 6.10 4.2 6.10 2.8 5.95 2.8 6.26 6.11 2 10.00 35.0 14647.34 6.11 2 10.00 35.0 14477.23 6.11 2 10.00 35.0 14348.61 6.11 2 10.00 35.0 14075.86 6.11 2 10.00 35.0 13833.15 6.11 2 10.00 35.0 13455.65 6.11 2 10.00 35.0 13097.26 6.11 2 10.00 35.0 12615.40 6.11 2 10.00 35.0 12139.75 6.11 2 10.00 35.0 11552.45 6.11 2 10.00 35.0 10960.62 6.11 2 10.00 35.0 10268.21 6.11 2 10.00 35.0 9558.81 6.11 2 10.00 35.0 8761.04 6.11 2 10.00 35.0 7936.42 6.11 2 10.00 35.0 7033.16 6.11 2 10.00 35.0 6094.22 6.11 2 10.00 35.0 5086.18 6.11 2 10.00 35.0 4035.16 6.11 2 10.00 35.0 2922.12 5.96 2 10.00 35.0 1732.10 6.27 2 10.00 35.0 575.56 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2312.64 2285.72 2265.18 2222.06 2184.64 2124.95 2070.27 1994.12 1921.84 1828.79 1738.59 1628.72 1520.17 1393.24 1266.01 1121.88 975.68 814.26 648.74 469.72 287.05 90.52 X -S Area: 3237.92 Path Length: 232.31 X -S Weight: 368462.00 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7N-Mining-Pseudo Static.gmf Processed: 04 Mar 2024 10:45:07 DATA: Analysis 1 - SS -7N - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 260.00 4758.00 274.00 4757.98 280.30 4754.07 297.25 4755.96 302.42 4758.00 319.91 4757.00 4756.01 357.46 4756.00 369.76 4752.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 341.16 4756.01 344.16 4756.01 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 260.00 4752.00 341.16 4752.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 344.16 4752.00 369.76 4752.00 529.88 4698.63 Profile: 5 (5 points) Material beneath: 3 - Stable Claystone Bedrock 260.00 4698.71 342.60 4698.71 529.88 4698.63 4698.69 Profile: 6 (5 points) Material beneath: 5 - Stable Sandstone Bedrock 260.00 4685.69 342.60 4685.69 529.88 4685.69 4685.69 Slope Surface (15 points) 4758.00 4755.96 4756.00 260.00 4754.07 297.25 4756.01 357.46 4698.69 Phreatic Surface (6 points) 260.00 4698.69 600.00 Failure Surface 4738.00 4698.69 274.00 302.42 369.76 4757.98 4758.00 4752.00 341.16 4738.00 280.30 319.91 529.88 4756.02 4757.00 4698.63 344.16 4698.71 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 302.42 YL: 4758.00 XR: 529.88 YR: Centre: XC: 499.41 YC: 5047.30 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints 4756.02 285.75 4754.54 291.85 341.16 4756.01 555.95 555.95 285.75 341.16 555.95 529.88 4698.63 350.00 4698.69 4685.69 4754.54 4756.01 4698.69 4698.63 344.16 600.00 600.00 291.85 344.16 600.00 555.95 Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 350.00 20 20 50 RESULTS: Analysis 1 - SS -7N - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.934 Analysis Summary There were: 18251 successful analyses from a total of 20001 trial failure surfaces 1750 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.04 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 307.42 4757.71 530.14 4698.63 550.12 5223.25 525.00 2.040 <-- Critical Surface 2 307.42 4757.71 529.62 4698.72 549.98 5223.32 525.00 2.041 3 307.42 4757.71 530.14 4698.63 548.24 5216.17 517.86 2.041 4 307.42 4757.71 528.56 4699.07 547.46 5216.58 517.86 2.041 5 306.89 4757.74 530.14 4698.63 549.61 5223.27 525.00 2.042 6 307.42 4757.71 528.04 4699.24 549.01 5223.82 525.00 2.042 7 307.42 4757.71 529.62 4698.72 548.10 5216.25 517.86 2.042 8 307.42 4757.71 530.14 4698.63 546.36 5209.09 510.71 2.042 9 307.42 4757.71 529.09 4698.89 544.02 5202.24 503.57 2.042 10 306.89 4757.74 529.62 4698.72 549.47 5223.34 525.00 2.042 11 307.42 4757.71 528.56 4699.07 545.58 5209.50 510.71 2.042 12 307.42 4757.71 529.09 4698.89 549.66 5223.49 525.00 2.042 13 306.89 4757.74 530.14 4698.63 547.74 5216.19 517.86 2.042 14 307.42 4757.71 528.04 4699.24 547.14 5216.75 517.86 2.042 15 307.42 4757.71 529.62 4698.72 546.22 5209.16 510.71 2.043 16 306.89 4757.74 529.62 4698.72 547.59 5216.26 517.86 2.043 17 307.42 4757.71 527.51 4699.42 548.69 5223.99 525.00 2.043 18 307.42 4757.71 529.62 4698.72 540.57 5187.88 489.29 2.043 19 307.42 4757.71 529.09 4698.89 542.14 5195.15 496.43 2.043 20 307.42 4757.71 530.14 4698.63 544.48 5202.00 503.57 2.043 21 307.42 4757.71 528.56 4699.07 543.70 5202.41 503.57 2.043 22 307.42 4757.71 529.09 4698.89 547.78 5216.41 517.86 2.043 23 306.89 4757.74 529.09 4698.89 549.15 5223.51 525.00 2.043 24 306.89 4757.74 530.14 4698.63 545.86 5209.10 510.71 2.043 25 307.42 4757.71 528.04 4699.24 545.26 5209.67 510.71 2.043 26 307.42 4757.71 528.56 4699.07 549.33 5223.66 525.00 2.044 27 307.42 4757.71 527.51 4699.42 546.81 5216.92 517.86 2.044 28 306.89 4757.74 529.62 4698.72 545.72 5209.18 510.71 2.044 29 307.42 4757.71 529.62 4698.72 544.33 5202.07 503.57 2.044 30 307.42 4757.71 530.67 4698.63 542.57 5194.92 496.43 2.044 31 307.42 4757.71 529.09 4698.89 540.25 5188.05 489.29 2.044 32 306.89 4757.74 529.09 4698.89 547.27 5216.43 517.86 2.044 33 307.42 4757.71 529.62 4698.72 538.68 5180.78 482.14 2.044 34 307.42 4757.71 526.99 4699.59 548.36 5224.16 525.00 2.044 35 307.42 4757.71 528.56 4699.07 541.82 5195.32 496.43 2.044 36 307.42 4757.71 529.09 4698.89 545.90 5209.33 510.71 2.044 37 307.42 4757.71 530.14 4698.63 542.60 5194.90 496.43 2.044 38 306.89 4757.74 530.14 4698.63 543.98 5202.01 503.57 2.044 39 307.42 4757.71 528.04 4699.24 543.38 5202.58 503.57 2.044 40 306.89 4757.74 528.56 4699.07 548.83 5223.68 525.00 2.044 41 307.42 4757.71 527.51 4699.42 544.94 5209.84 510.71 2.044 42 306.89 4757.74 529.62 4698.72 543.84 5202.09 503.57 2.045 43 307.42 4757.71 530.14 4698.63 536.94 5173.58 475.00 2.045 44 307.42 4757.71 526.99 4699.59 546.49 5217.08 517.86 2.045 45 306.89 4757.74 529.09 4698.89 545.40 5209.35 510.71 2.045 46 307.42 4757.71 529.62 4698.72 542.45 5194.98 496.43 2.045 47 307.42 4757.71 528.56 4699.07 539.94 5188.22 489.29 2.045 48 307.42 4757.71 529.09 4698.89 538.37 5180.95 482.14 2.045 49 307.42 4757.71 530.67 4698.63 540.69 5187.81 489.29 2.045 50 306.89 4757.74 528.56 4699.07 546.95 5216.60 517.86 2.045 51 306.89 4757.74 530.14 4698.63 542.10 5194.92 496.43 2.045 52 307.42 4757.71 528.04 4699.24 541.50 5195.49 496.43 2.045 53 307.42 4757.71 526.46 4699.77 548.04 5224.33 525.00 2.045 54 306.89 4757.74 530.67 4698.63 542.08 5194.93 496.43 2.045 55 307.42 4757.71 529.62 4698.72 536.79 5173.66 475.00 2.045 56 307.42 4757.71 530.14 4698.63 540.71 5187.80 489.29 2.045 57 306.37 4757.77 530.14 4698.63 549.11 5223.29 525.00 2.045 58 307.42 4757.71 527.51 4699.42 543.06 5202.75 503.57 2.045 59 306.89 4757.74 528.04 4699.24 548.50 5223.84 525.00 2.045 60 307.42 4757.71 526.99 4699.59 544.62 5210.00 510.71 2.045 61 306.89 4757.74 529.62 4698.72 541.96 5194.99 496.43 2.045 62 306.89 4757.74 529.09 4698.89 543.52 5202.26 503.57 2.046 63 306.37 4757.77 529.62 4698.72 548.97 5223.36 525.00 2.046 64 307.42 4757.71 526.46 4699.77 546.17 5217.25 517.86 2.046 65 306.89 4757.74 528.56 4699.07 545.08 5209.52 510.71 2.046 66 307.42 4757.71 530.14 4698.63 535.05 5166.46 467.86 2.046 67 306.37 4757.77 530.14 4698.63 547.23 5216.21 517.86 2.046 68 307.42 4757.71 528.56 4699.07 538.05 5181.12 482.14 2.046 69 307.42 4757.71 528.04 4699.24 539.62 5188.39 489.29 2.046 70 306.89 4757.74 530.14 4698.63 540.22 5187.81 489.29 2.046 71 306.89 4757.74 530.67 4698.63 540.20 5187.82 489.29 2.046 72 306.89 4757.74 528.04 4699.24 546.63 5216.77 517.86 2.046 73 307.42 4757.71 527.51 4699.42 541.18 5195.66 496.43 2.046 74 307.42 4757.71 529.09 4698.89 536.48 5173.84 475.00 2.046 75 307.42 4757.71 530.67 4698.63 538.81 5180.71 482.14 2.046 76 307.42 4757.71 525.93 4699.95 547.72 5224.49 525.00 2.046 77 307.42 4757.71 526.99 4699.59 542.74 5202.92 503.57 2.046 78 307.42 4757.71 529.62 4698.72 534.90 5166.54 467.86 2.046 79 307.42 4757.71 530.14 4698.63 538.83 5180.69 482.14 2.046 80 306.37 4757.77 529.62 4698.72 547.09 5216.28 517.86 2.046 81 306.89 4757.74 527.51 4699.42 548.18 5224.01 525.00 2.046 82 306.89 4757.74 529.62 4698.72 540.08 5187.89 489.29 2.046 83 306.89 4757.74 529.09 4698.89 541.64 5195.16 496.43 2.046 84 307.42 4757.71 526.46 4699.77 544.30 5210.17 510.71 2.047 85 306.89 4757.74 528.56 4699.07 543.20 5202.43 503.57 2.047 86 306.37 4757.77 529.09 4698.89 548.64 5223.53 525.00 2.047 87 306.37 4757.77 530.14 4698.63 545.36 5209.12 510.71 2.047 88 306.89 4757.74 528.04 4699.24 544.76 5209.68 510.71 2.047 89 307.42 4757.71 525.93 4699.95 545.85 5217.42 517.86 2.047 90 307.42 4757.71 528.04 4699.24 537.74 5181.29 482.14 2.047 91 307.42 4757.71 527.51 4699.42 539.30 5188.56 489.29 2.047 92 306.89 4757.74 530.14 4698.63 538.34 5180.70 482.14 2.047 93 307.42 4757.71 528.56 4699.07 536.17 5174.01 475.00 2.047 94 306.89 4757.74 530.67 4698.63 538.32 5180.71 482.14 2.047 95 307.42 4757.71 526.99 4699.59 540.87 5195.83 496.43 2.047 96 306.89 4757.74 527.51 4699.42 546.31 5216.94 517.86 2.047 97 306.37 4757.77 529.62 4698.72 545.22 5209.19 510.71 2.047 98 307.42 4757.71 530.14 4698.63 533.16 5159.33 460.71 2.047 99 307.42 4757.71 530.67 4698.63 533.15 5159.34 460.71 2.047 Critical Failure Surface (circle 1) Intersects: XL: 307.42 YL: 4757.71 XR: 530.14 YR: 4698.63 Centre: XC: 550.12 YC: 5223.25 Radius: R: 525.00 Generated failure surface: (20 points) 307.42 4757.71 318.33 4752.19 329.36 4746.92 340.51 4741.91 351.78 4737.16 363.15 4732.67 374.63 4728.45 386.20 4724.50 397.86 4720.81 409.60 4717.40 421.42 4714.27 433.31 4711.41 445.26 4708.83 457.27 4706.53 469.32 4704.50 481.43 4702.76 493.57 4701.30 505.74 4700.13 517.93 4699.24 530.14 4698.63 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 307.42 6.68 26.9 5.45 6.11 1 50.00 25.0 668.14 0.00 98.67 1.00 2 312.87 20.05 26.9 5.45 6.11 1 50.00 25.0 2004.94 0.00 318.35 1.00 3 318.33 8.28 25.5 1.58 1.75 2 10.00 35.0 832.84 0.00 450.14 0.95 4 319.91 31.12 25.5 4.73 5.24 2 10.00 35.0 3231.87 0.00 585.62 0.95 5 324.64 40.74 25.5 4.73 5.24 2 10.00 35.0 4354.39 0.00 789.75 0.95 6 329.36 60.02 24.2 5.58 6.11 2 10.00 35.0 6532.01 0.00 1012.95 0.95 7 334.94 72.55 24.2 5.58 6.11 2 10.00 35.0 7994.43 0.00 1240.13 0.95 8 340.51 54.24 22.9 3.65 3.96 6 0.00 45.0 5423.94 0.00 1232.51 0.90 9 344.16 62.64 22.9 3.81 4.13 2 10.00 35.0 6974.54 0.00 1597.49 0.95 10 347.97 68.75 22.9 3.81 4.13 2 10.00 35.0 7677.22 0.00 1758.62 0.95 11 351.78 113.42 21.5 5.68 6.11 2 10.00 35.0 12702.51 0.00 1967.77 0.95 12 357.46 121.16 21.5 5.69 6.12 2 10.00 35.0 13670.73 0.00 2113.21 0.95 13 363.15 142.84 20.2 6.61 7.04 2 10.00 35.0 16320.45 0.00 2191.72 0.95 14 369.76 106.35 20.2 4.87 5.19 2 10.00 35.0 12230.29 0.00 2228.92 0.95 15 374.63 127.00 18.9 5.79 6.11 2 10.00 35.0 14605.26 0.00 2258.15 0.95 16 380.41 127.28 18.9 5.79 6.11 2 10.00 35.0 14637.09 0.00 2263.13 0.95 17 0.95 18 0.95 19 0.95 20 0.95 21 0.95 22 0.95 23 0.95 24 0.95 25 0.95 26 0.95 27 0.96 28 0.96 29 0.96 30 0.96 31 0.96 32 0.96 33 0.97 34 0.97 35 0.97 36 0.97 37 0.98 38 0.98 386.20 392.03 397.86 403.73 409.60 415.51 421.42 427.36 433.31 439.28 445.26 451.26 457.27 463.30 469.32 475.38 481.43 487.50 493.57 499.65 505.74 511.83 128.10 127.51 127.37 125.89 124.77 122.40 120.29 117.01 113.89 109.70 105.56 100.46 95.31 89.29 83.12 76.18 69.01 61.16 52.99 44.23 35.09 25.41 17.5 5.83 17.5 16.2 16.2 14.9 14.9 13.5 13.5 12.2 12.2 10.9 10.9 9.5 9.5 8.2 8.2 6.9 6.9 5.5 5.5 4.2 4.2 5.83 5.87 5.87 5.91 5.91 5.94 5.94 5.98 5.98 6.00 6.00 6.03 6.03 6.05 6.05 6.07 6.07 6.09 6.09 6.10 6.10 6.11 2 10.00 35.0 14731.90 6.11 2 10.00 35.0 14663.16 6.11 2 10.00 35.0 14647.34 6.11 2 10.00 35.0 14477.23 6.11 2 10.00 35.0 14348.61 6.11 2 10.00 35.0 14075.86 6.11 2 10.00 35.0 13833.15 6.11 2 10.00 35.0 13455.65 6.11 2 10.00 35.0 13097.26 6.11 2 10.00 35.0 12615.40 6.11 2 10.00 35.0 12139.75 6.11 2 10.00 35.0 11552.45 6.11 2 10.00 35.0 10960.62 6.11 2 10.00 35.0 10268.21 6.11 2 10.00 35.0 9558.81 6.11 2 10.00 35.0 8761.04 6.11 2 10.00 35.0 7936.42 6.11 2 10.00 35.0 7033.16 6.11 2 10.00 35.0 6094.22 6.11 2 10.00 35.0 5086.18 6.11 2 10.00 35.0 4035.16 6.11 2 10.00 35.0 2922.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2278.55 2267.91 2267.48 2241.07 2224.45 2182.08 2148.74 2090.02 2039.46 1964.44 1896.25 1804.42 1718.15 1609.57 1504.71 1379.07 1255.15 1112.24 968.88 808.57 645.26 467.18 39 517.93 15.06 2.8 5.95 5.96 2 10.00 35.0 1732.10 0.00 285.97 0.98 40 523.88 5.00 2.8 6.26 6.27 2 10.00 35.0 575.56 0.00 90.14 0.98 X -S Area: 3237.92 Path Length: 232.31 X -S Weight: 368462.00 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7S-Mining.gmf Processed: 04 Mar 2024 09:57:26 DATA: Analysis 1 - SS -7S - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 176.28 4752.00 190.05 4756.72 203.03 4756.71 206.03 4756.71 235.88 4756.69 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.54 291.85 4754.07 297.25 4755.96 319.91 4757.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 203.03 4756.71 206.03 4756.71 Profile: 3 (3 points) Material beneath: 2 - Sand and Gravel 17.19 4698.97 176.28 4752.00 203.03 4752.00 Profile: 4 (2 points) Material beneath: 2 - Sand and Gravel 206.03 4752.00 319.91 4752.00 Profile: 5 (4 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4698.97 17.19 4698.97 204.50 4698.95 319.91 4698.95 Slope Surface (14 points) 0.00 4698.97 4756.71 206.03 4756.71 4756.02 285.75 4754.54 Phreatic Surface (5 points) 0.00 4731.50 Failure Surface 4698.97 17.19 4698.97 235.88 4756.69 291.85 4754.07 17.19 4698.97 176.28 4752.00 260.00 4758.00 297.25 4755.96 203.03 4698.97 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 17.19 YL: 4698.97 XR: 274.00 YR: Centre: XC: 61.02 YC: 5096.56 Radius: R: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 350.00 20 20 50 RESULTS: Analysis 1 - SS -7S - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface 190.05 274.00 319.91 206.03 4757.98 400.00 4756.72 4757.98 4757.00 203.03 280.30 4731.50 319.91 Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 4.022 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.96 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 16.40 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.957 <-- Critical Surface 2 16.93 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.958 3 16.40 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.958 4 16.93 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.959 5 16.40 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.960 6 17.45 4699.06 269.00 4757.99 15.43 5274.05 575.00 2.960 7 16.93 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.960 8 16.40 4698.97 269.00 4757.99 20.26 5252.53 553.57 2.961 9 17.45 4699.06 269.00 4757.99 17.10 5266.92 567.86 2.961 10 16.93 4698.97 269.00 4757.99 20.27 5252.53 553.57 2.962 11 16.40 4698.97 269.00 4757.99 21.93 5245.37 546.43 2.962 12 17.45 4699.06 269.00 4757.99 18.77 5259.77 560.71 2.963 13 16.93 4698.97 269.00 4757.99 21.94 5245.38 546.43 2.963 14 17.98 4699.23 269.00 4757.99 15.78 5274.23 575.00 2.964 15 17.45 4699.06 269.00 4757.99 20.45 5252.62 553.57 2.964 16 16.93 4698.97 269.00 4757.99 23.62 5238.21 539.29 2.965 17 17.98 4699.23 269.00 4757.99 17.45 5267.09 567.86 2.965 18 17.45 4699.06 269.00 4757.99 22.12 5245.47 546.43 2.965 19 16.40 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.966 20 17.45 4699.06 269.00 4757.99 23.80 5238.31 539.29 2.966 21 17.98 4699.23 269.00 4757.99 19.13 5259.95 560.71 2.967 22 16.93 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.967 23 17.45 4699.06 269.00 4757.99 25.48 5231.14 532.14 2.967 24 17.98 4699.23 269.00 4757.99 20.80 5252.80 553.57 2.967 25 18.51 4699.41 269.00 4757.99 16.14 5274.40 575.00 2.968 26 16.40 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.968 27 16.93 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.968 28 17.45 4699.06 269.53 4757.99 15.96 5274.06 575.00 2.968 29 17.98 4699.23 269.00 4757.99 22.47 5245.64 546.43 2.968 30 17.45 4699.06 269.00 4757.99 27.16 5223.97 525.00 2.969 31 18.51 4699.41 269.00 4757.99 17.81 5267.27 567.86 2.969 32 16.40 4698.97 269.53 4757.99 19.11 5259.68 560.71 2.969 33 16.93 4698.97 269.53 4757.99 19.12 5259.68 560.71 2.969 34 17.45 4699.06 269.53 4757.99 17.63 5266.92 567.86 2.969 35 16.40 4698.97 269.53 4757.99 20.78 5252.52 553.57 2.969 36 17.98 4699.23 269.00 4757.99 24.15 5238.48 539.29 2.969 37 18.51 4699.41 269.00 4757.99 19.48 5260.12 560.71 2.970 38 16.93 4698.97 269.53 4757.99 20.79 5252.53 553.57 2.970 39 17.45 4699.06 269.53 4757.99 19.30 5259.77 560.71 2.970 40 16.40 4698.97 269.53 4757.99 22.45 5245.37 546.43 2.970 41 16.93 4698.97 269.53 4757.99 22.46 5245.37 546.43 2.970 42 17.98 4699.23 269.00 4757.99 25.83 5231.32 532.14 2.970 43 19.03 4699.58 269.00 4757.99 16.50 5274.58 575.00 2.971 44 18.51 4699.41 269.00 4757.99 21.15 5252.97 553.57 2.971 45 17.45 4699.06 269.53 4757.99 20.97 5252.62 553.57 2.971 46 17.98 4699.23 269.53 4757.99 16.31 5274.23 575.00 2.971 47 18.51 4699.41 269.00 4757.99 22.82 5245.82 546.43 2.972 48 19.03 4699.58 269.00 4757.99 18.16 5267.44 567.86 2.972 49 17.98 4699.23 269.00 4757.99 27.50 5224.15 525.00 2.972 50 17.45 4699.06 269.53 4757.99 22.64 5245.46 546.43 2.972 51 17.98 4699.23 269.53 4757.99 17.98 5267.09 567.86 2.972 52 18.51 4699.41 269.00 4757.99 24.50 5238.66 539.29 2.973 53 19.03 4699.58 269.00 4757.99 19.83 5260.30 560.71 2.973 54 17.98 4699.23 269.00 4757.99 29.18 5216.97 517.86 2.973 55 17.45 4699.06 269.53 4757.99 24.32 5238.30 539.29 2.973 56 17.98 4699.23 269.53 4757.99 19.65 5259.95 560.71 2.973 57 19.56 4699.76 269.00 4757.99 16.85 5274.75 575.00 2.974 58 16.93 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.974 59 16.40 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.974 60 18.51 4699.41 269.00 4757.99 26.17 5231.50 532.14 2.974 61 19.03 4699.58 269.00 4757.99 21.50 5253.15 553.57 2.974 62 17.98 4699.23 269.00 4757.99 30.87 5209.79 510.71 2.974 63 17.45 4699.06 269.53 4757.99 25.99 5231.13 532.14 2.974 64 17.98 4699.23 269.53 4757.99 21.32 5252.79 553.57 2.974 65 16.40 4698.97 270.05 4757.99 17.97 5266.83 567.86 2.974 66 18.51 4699.41 269.53 4757.99 16.67 5274.41 575.00 2.974 67 16.93 4698.97 270.05 4757.99 17.98 5266.83 567.86 2.974 68 19.56 4699.76 269.00 4757.99 18.52 5267.62 567.86 2.975 69 19.03 4699.58 269.00 4757.99 23.17 5246.00 546.43 2.975 70 18.51 4699.41 269.00 4757.99 27.85 5224.33 525.00 2.975 71 17.45 4699.06 270.05 4757.99 16.49 5274.06 575.00 2.975 72 17.45 4699.06 269.53 4757.99 27.67 5223.96 525.00 2.975 73 17.98 4699.23 269.53 4757.99 22.99 5245.64 546.43 2.975 74 17.98 4699.23 269.00 4757.99 32.55 5202.59 503.57 2.975 75 16.40 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.975 76 16.93 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.975 77 18.51 4699.41 269.53 4757.99 18.34 5267.27 567.86 2.975 78 19.56 4699.76 269.00 4757.99 20.19 5260.47 560.71 2.976 79 19.03 4699.58 269.00 4757.99 24.85 5238.84 539.29 2.976 80 18.51 4699.41 269.00 4757.99 29.53 5217.15 517.86 2.976 81 17.45 4699.06 270.05 4757.99 18.15 5266.92 567.86 2.976 82 16.40 4698.97 270.05 4757.99 21.30 5252.52 553.57 2.976 83 17.98 4699.23 269.53 4757.99 24.66 5238.48 539.29 2.976 84 16.93 4698.97 270.05 4757.99 21.31 5252.52 553.57 2.976 85 18.51 4699.41 269.53 4757.99 20.00 5260.12 560.71 2.976 86 17.98 4699.23 269.00 4757.99 34.23 5195.40 496.43 2.976 87 20.08 4699.94 269.00 4757.99 17.21 5274.93 575.00 2.977 88 19.56 4699.76 269.00 4757.99 21.86 5253.33 553.57 2.977 89 19.03 4699.58 269.00 4757.99 26.52 5231.67 532.14 2.977 90 17.45 4699.06 270.05 4757.99 19.82 5259.77 560.71 2.977 91 16.40 4698.97 270.05 4757.99 22.97 5245.36 546.43 2.977 92 18.51 4699.41 269.00 4757.99 31.21 5209.96 510.71 2.977 93 16.93 4698.97 270.05 4757.99 22.98 5245.37 546.43 2.977 94 17.98 4699.23 269.53 4757.99 26.34 5231.31 532.14 2.977 95 18.51 4699.41 269.53 4757.99 21.67 5252.97 553.57 2.977 96 19.03 4699.58 269.53 4757.99 17.03 5274.58 575.00 2.977 97 20.08 4699.94 269.00 4757.99 18.88 5267.79 567.86 2.978 98 19.56 4699.76 269.00 4757.99 23.52 5246.17 546.43 2.978 99 17.45 4699.06 270.05 4757.99 21.49 5252.61 553.57 2.978 Critical Failure Surface (circle 1) Intersects: XL: 16.40 Centre: XC: 15.25 Generated failure surface: (20 16.40 4698.97 4701.72 85.08 4703.23 4712.52 152.77 4715.66 4731.37 218.48 4736.08 4757.99 YL: YC: points) 30.17 98.73 166.10 231.30 4698.97 5273.97 4699.16 4705.06 4719.11 4741.10 XR: 269.00 YR: 4757.99 Radius: R: 575.00 43.93 112.33 179.34 244.00 4699.69 4707.22 4722.88 4746.43 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test X -S Base 57.68 125.88 192.49 256.57 4700.54 4709.71 4726.97 4752.06 71.40 139.36 205.54 269.00 PoreWater Normal X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 16.40 5.76 0.8 6.88 6.89 2 10.00 35.0 661.87 0.00 95.77 1.00 2 23.29 20.90 0.8 6.88 6.89 2 10.00 35.0 2403.14 0.00 347.84 1.00 3 30.17 35.44 2.2 6.88 6.89 2 10.00 35.0 4075.69 0.00 586.95 0.99 4 37.05 49.42 2.2 6.88 6.89 2 10.00 35.0 5683.33 0.00 818.51 0.99 5 43.93 62.75 3.5 6.87 6.89 2 10.00 35.0 7216.65 0.00 1034.72 0.99 6 50.80 75.57 3.5 6.87 6.89 2 10.00 35.0 8690.78 0.00 1246.12 0.99 7 57.68 87.65 4.9 6.86 6.89 2 10.00 35.0 10080.06 0.00 1439.79 0.98 8 64.54 99.29 4.9 6.86 6.89 2 10.00 35.0 11418.28 0.00 1630.94 0.98 9 71.40 110.09 6.3 6.84 6.89 2 10.00 35.0 12660.30 0.00 1802.41 0.98 10 78.24 120.54 6.3 6.84 6.89 2 10.00 35.0 13862.42 0.00 1973.59 0.98 11 85.08 130.03 7.7 6.82 6.89 2 10.00 35.0 14953.00 0.00 2123.15 0.98 12 91.91 139.29 7.7 6.82 6.89 2 10.00 35.0 16017.87 0.00 2274.38 0.98 13 98.73 147.44 9.0 6.80 6.89 2 10.00 35.0 16955.62 0.00 2402.47 0.98 14 105.53 155.50 9.0 6.80 6.89 2 10.00 35.0 17882.73 0.00 2533.86 0.98 15 112.33 162.31 10.4 6.77 6.89 2 10.00 35.0 18665.90 0.00 2640.78 0.97 16 119.10 169.18 10.4 6.77 6.89 2 10.00 35.0 19455.74 0.00 2752.55 0.97 17 125.88 174.64 11.8 6.74 6.89 2 10.00 35.0 20083.34 0.00 2838.66 0.97 18 132.62 180.31 11.8 6.74 6.89 2 10.00 35.0 20735.49 0.00 2930.81 0.97 19 139.36 184.41 13.2 6.70 6.89 2 10.00 35.0 21207.66 0.00 2996.45 0.97 20 146.06 188.89 13.1 6.70 6.89 2 10.00 35.0 21722.65 0.00 3069.29 0.97 21 152.77 191.67 14.5 6.67 6.89 2 10.00 35.0 22041.49 0.00 3114.88 0.97 22 0.97 23 0.97 24 0.97 25 0.97 26 0.98 27 0.98 28 0.98 29 0.98 30 0.98 31 0.95 32 0.98 33 0.98 34 0.98 35 0.98 36 0.99 37 0.99 38 0.99 39 0.99 40 1.03 41 1.03 42 1.03 159.43 194.97 14.5 6.67 6.89 2 10.00 35.0 22421.01 166.10 150.80 15.9 5.09 5.29 2 10.00 35.0 17341.63 171.19 152.05 15.9 5.09 5.29 2 10.00 35.0 17486.28 176.28 92.13 15.9 3.06 3.18 2 10.00 35.0 10571.38 179.34 161.97 17.3 5.35 5.61 2 10.00 35.0 18469.03 184.70 162.89 17.3 5.35 5.61 2 10.00 35.0 18427.15 190.05 73.62 17.3 2.44 2.56 2 10.00 35.0 8293.02 192.49 152.04 18.6 5.27 5.56 2 10.00 35.0 17112.46 197.76 142.66 18.6 5.27 5.56 2 10.00 35.0 16033.65 203.03 64.72 18.6 2.51 2.65 6 0.00 45.0 6471.75 205.54 156.31 20.0 6.47 6.89 2 10.00 35.0 17519.16 212.01 141.04 20.0 6.47 6.89 2 10.00 35.0 15763.43 218.48 124.14 21.4 6.41 6.89 2 10.00 35.0 13824.26 224.89 108.02 21.4 6.41 6.89 2 10.00 35.0 11970.57 231.30 66.94 22.8 4.58 4.96 2 10.00 35.0 7375.76 235.88 98.98 22.8 8.12 8.81 2 10.00 35.0 10783.94 244.00 58.93 24.1 6.22 6.81 2 10.00 35.0 6282.76 250.22 43.71 24.1 6.22 6.81 2 10.00 35.0 4501.28 256.44 18.01 25.5 3.56 3.94 1 50.00 25.0 1801.18 260.00 14.53 25.5 4.50 4.99 1 50.00 25.0 1452.99 264.50 4.84 25.5 4.50 4.99 1 50.00 25.0 484.30 X -S Area: 4674.39 Path Length: 261.65 X -S Weight: 530861.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3168.53 3190.39 3217.00 3232.55 3212.37 3205.02 3160.68 3006.87 2817.17 2312.69 2491.72 2241.93 1971.99 1707.40 1465.01 1206.33 912.16 653.13 463.01 292.82 92.59 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7S-Mining-Pseudo Static.gmf Processed: 04 Mar 2024 10:03:00 DATA: Analysis 1 - SS -7S - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) 176.28 4752.00 4756.69 260.00 4758.00 4754.07 297.25 4755.96 Profile: 2 (2 points) 203.03 4756.71 Profile: 3 (3 points) 17.19 4698.97 Profile: 4 (2 points) 206.03 4752.00 Profile: 5 (4 points) 0.00 4698.97 Slope Surface (14 points) 0.00 4698.97 4756.71 206.03 4756.71 4756.02 285.75 4754.54 Material beneath: 1 - Overburden/Clay 190.05 4756.72 203.03 274.00 4757.98 4756.71 206.03 280.30 4756.02 319.91 4757.00 Material beneath: 6 - Slurry Wall 206.03 4756.71 Material beneath: 2 - Sand 176.28 4752.00 Material beneath: 2 - Sand 319.91 4752.00 Material beneath: 4 - Stable Siltstone Bedrock 17.19 4698.97 204.50 4698.95 Phreatic Surface (5 points) 0.00 4731.50 Failure Surface 4698.97 17.19 235.88 291.85 4698.97 4756.69 4754.07 17.19 4698.97 and Gravel 203.03 and Gravel 176.28 260.00 297.25 4752.00 4752.00 4758.00 4755.96 203.03 4698.97 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Earthquake Force 17.19 61.02 YL: YC: 4698.97 5096.56 Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XR: XL XR R 10.00 10.00 350.00 20 20 50 274.00 YR: Radius: R: 285.75 4756.71 235.88 4754.54 319.91 4698.95 190.05 274.00 319.91 4756.72 4757.98 4757.00 206.03 4731.50 4757.98 400.00 291.85 203.03 280.30 319.91 RESULTS: Analysis 1 - SS -7S - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.096 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.27 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 16.40 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.267 <-- Critical Surface 2 16.93 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.267 3 16.40 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.268 4 16.93 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.268 5 17.45 4699.06 269.00 4757.99 15.43 5274.05 575.00 2.269 6 16.40 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.269 7 16.93 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.270 8 17.45 4699.06 269.00 4757.99 17.10 5266.92 567.86 2.270 9 16.40 4698.97 269.00 4757.99 20.26 5252.53 553.57 2.270 10 16.93 4698.97 269.00 4757.99 20.27 5252.53 553.57 2.271 11 17.98 4699.23 269.00 4757.99 15.78 5274.23 575.00 2.271 12 17.45 4699.06 269.00 4757.99 18.77 5259.77 560.71 2.271 13 16.40 4698.97 269.00 4757.99 21.93 5245.37 546.43 2.271 14 16.93 4698.97 269.00 4757.99 21.94 5245.38 546.43 2.272 15 17.98 4699.23 269.00 4757.99 17.45 5267.09 567.86 2.272 16 17.45 4699.06 269.00 4757.99 20.45 5252.62 553.57 2.272 17 16.40 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.273 18 16.93 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.273 19 16.93 4698.97 269.00 4757.99 23.62 5238.21 539.29 2.273 20 18.51 4699.41 269.00 4757.99 16.14 5274.40 575.00 2.273 21 17.98 4699.23 269.00 4757.99 19.13 5259.95 560.71 2.273 22 17.45 4699.06 269.00 4757.99 22.12 5245.47 546.43 2.273 23 16.40 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.274 24 17.45 4699.06 269.53 4757.99 15.96 5274.06 575.00 2.274 25 16.93 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.274 26 18.51 4699.41 269.00 4757.99 17.81 5267.27 567.86 2.274 27 17.98 4699.23 269.00 4757.99 20.80 5252.80 553.57 2.274 28 17.45 4699.06 269.00 4757.99 23.80 5238.31 539.29 2.274 29 16.40 4698.97 269.53 4757.99 19.11 5259.68 560.71 2.275 30 16.93 4698.97 269.53 4757.99 19.12 5259.68 560.71 2.275 31 17.45 4699.06 269.53 4757.99 17.63 5266.92 567.86 2.275 32 19.03 4699.58 269.00 4757.99 16.50 5274.58 575.00 2.275 33 18.51 4699.41 269.00 4757.99 19.48 5260.12 560.71 2.275 34 17.98 4699.23 269.00 4757.99 22.47 5245.64 546.43 2.275 35 17.45 4699.06 269.00 4757.99 25.48 5231.14 532.14 2.275 36 16.40 4698.97 269.53 4757.99 20.78 5252.52 553.57 2.276 37 16.93 4698.97 269.53 4757.99 20.79 5252.53 553.57 2.276 38 17.45 4699.06 269.53 4757.99 19.30 5259.77 560.71 2.276 39 17.98 4699.23 269.53 4757.99 16.31 5274.23 575.00 2.276 40 19.03 4699.58 269.00 4757.99 18.16 5267.44 567.86 2.276 41 18.51 4699.41 269.00 4757.99 21.15 5252.97 553.57 2.276 42 17.98 4699.23 269.00 4757.99 24.15 5238.48 539.29 2.276 43 17.45 4699.06 269.00 4757.99 27.16 5223.97 525.00 2.276 44 16.40 4698.97 269.53 4757.99 22.45 5245.37 546.43 2.276 45 16.93 4698.97 269.53 4757.99 22.46 5245.37 546.43 2.277 46 17.45 4699.06 269.53 4757.99 20.97 5252.62 553.57 2.277 47 17.98 4699.23 269.53 4757.99 17.98 5267.09 567.86 2.277 48 19.56 4699.76 269.00 4757.99 16.85 5274.75 575.00 2.277 49 19.03 4699.58 269.00 4757.99 19.83 5260.30 560.71 2.277 50 18.51 4699.41 269.00 4757.99 22.82 5245.82 546.43 2.277 51 16.93 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.277 52 16.40 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.277 53 17.98 4699.23 269.00 4757.99 25.83 5231.32 532.14 2.277 54 17.45 4699.06 269.53 4757.99 22.64 5245.46 546.43 2.277 55 17.98 4699.23 269.53 4757.99 19.65 5259.95 560.71 2.278 56 18.51 4699.41 269.53 4757.99 16.67 5274.41 575.00 2.278 57 19.56 4699.76 269.00 4757.99 18.52 5267.62 567.86 2.278 58 19.03 4699.58 269.00 4757.99 21.50 5253.15 553.57 2.278 59 16.40 4698.97 270.05 4757.99 17.97 5266.83 567.86 2.278 60 16.93 4698.97 270.05 4757.99 17.98 5266.83 567.86 2.278 61 18.51 4699.41 269.00 4757.99 24.50 5238.66 539.29 2.278 62 17.45 4699.06 270.05 4757.99 16.49 5274.06 575.00 2.278 63 17.98 4699.23 269.00 4757.99 27.50 5224.15 525.00 2.278 64 17.98 4699.23 269.53 4757.99 21.32 5252.79 553.57 2.278 65 18.51 4699.41 269.53 4757.99 18.34 5267.27 567.86 2.278 66 17.45 4699.06 269.53 4757.99 24.32 5238.30 539.29 2.278 67 20.08 4699.94 269.00 4757.99 17.21 5274.93 575.00 2.279 68 16.40 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.279 69 19.56 4699.76 269.00 4757.99 20.19 5260.47 560.71 2.279 70 16.93 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.279 71 17.45 4699.06 270.05 4757.99 18.15 5266.92 567.86 2.279 72 19.03 4699.58 269.00 4757.99 23.17 5246.00 546.43 2.279 73 18.51 4699.41 269.00 4757.99 26.17 5231.50 532.14 2.279 74 17.98 4699.23 269.00 4757.99 29.18 5216.97 517.86 2.279 75 17.98 4699.23 269.53 4757.99 22.99 5245.64 546.43 2.279 76 19.03 4699.58 269.53 4757.99 17.03 5274.58 575.00 2.279 77 18.51 4699.41 269.53 4757.99 20.00 5260.12 560.71 2.279 78 17.45 4699.06 269.53 4757.99 25.99 5231.13 532.14 2.279 79 16.40 4698.97 270.05 4757.99 21.30 5252.52 553.57 2.280 80 20.08 4699.94 269.00 4757.99 18.88 5267.79 567.86 2.280 81 16.93 4698.97 270.05 4757.99 21.31 5252.52 553.57 2.280 82 17.45 4699.06 270.05 4757.99 19.82 5259.77 560.71 2.280 83 19.56 4699.76 269.00 4757.99 21.86 5253.33 553.57 2.280 84 17.98 4699.23 270.05 4757.99 16.84 5274.23 575.00 2.280 85 19.03 4699.58 269.00 4757.99 24.85 5238.84 539.29 2.280 86 18.51 4699.41 269.00 4757.99 27.85 5224.33 525.00 2.280 87 19.03 4699.58 269.53 4757.99 18.69 5267.44 567.86 2.280 88 18.51 4699.41 269.53 4757.99 21.67 5252.97 553.57 2.280 89 17.98 4699.23 269.53 4757.99 24.66 5238.48 539.29 2.280 90 17.45 4699.06 269.53 4757.99 27.67 5223.96 525.00 2.280 91 17.98 4699.23 269.00 4757.99 30.87 5209.79 510.71 2.280 92 16.40 4698.97 270.05 4757.99 22.97 5245.36 546.43 2.280 93 20.61 4700.11 269.00 4757.99 17.57 5275.10 575.00 2.281 94 16.93 4698.97 270.05 4757.99 22.98 5245.37 546.43 2.281 95 17.45 4699.06 270.05 4757.99 21.49 5252.61 553.57 2.281 96 20.08 4699.94 269.00 4757.99 20.54 5260.65 560.71 2.281 97 17.98 4699.23 270.05 4757.99 18.51 5267.09 567.86 2.281 98 19.56 4699.76 269.00 4757.99 23.52 5246.17 546.43 2.281 99 19.03 4699.58 269.00 4757.99 26.52 5231.67 532.14 2.281 Critical Failure Surface (circle 1) Intersects: XL: 16.40 YL: 4698.97 Centre: XC: 15.25 YC: 5273.97 Generated failure surface: (20 points) 16.40 4698 97 30.17 4699.16 4701.72 85.08 4703.23 98.73 4705.06 4712.52 152.77 4715.66 166.10 4719.11 4731.37 XR: 269.00 YR: 4757.99 Radius: R: 575.00 43.93 112.33 179.34 4699.69 4707.22 4722.88 57.68 125.88 192.49 4700.54 4709.71 4726.97 71.40 139.36 205.54 218.48 4757.99 4736.08 231.30 4741.10 244.00 4746.43 256.57 4752.06 269.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 16.40 5.76 0.8 6.88 6.89 2 10.00 35.0 661.87 0.00 95.66 1.00 2 23.29 20.90 0.8 6.88 6.89 2 10.00 35.0 2403.14 0.00 347.48 1.00 3 30.17 35.44 2.2 6.88 6.89 2 10.00 35.0 4075.69 0.00 585.32 0.99 4 37.05 49.42 2.2 6.88 6.89 2 10.00 35.0 5683.33 0.00 816.26 0.99 5 43.93 62.75 3.5 6.87 6.89 2 10.00 35.0 7216.65 0.00 1030.12 0.98 6 50.80 75.57 3.5 6.87 6.89 2 10.00 35.0 8690.78 0.00 1240.59 0.98 7 57.68 87.65 4.9 6.86 6.89 2 10.00 35.0 10080.06 0.00 1431.01 0.98 8 64.54 99.29 4.9 6.86 6.89 2 10.00 35.0 11418.28 0.00 1621.00 0.98 9 71.40 110.09 6.3 6.84 6.89 2 10.00 35.0 12660.30 0.00 1788.44 0.97 10 78.24 120.54 6.3 6.84 6.89 2 10.00 35.0 13862.42 0.00 1958.30 0.97 11 85.08 130.03 7.7 6.82 6.89 2 10.00 35.0 14953.00 0.00 2103.24 0.97 12 91.91 139.29 7.7 6.82 6.89 2 10.00 35.0 16017.87 0.00 2253.06 0.97 13 98.73 147.44 9.0 6.80 6.89 2 10.00 35.0 16955.62 0.00 2376.06 0.97 14 105.53 155.50 9.0 6.80 6.89 2 10.00 35.0 17882.73 0.00 2506.01 0.97 15 112.33 162.31 10.4 6.77 6.89 2 10.00 35.0 18665.90 0.00 2607.51 0.96 16 119.10 169.18 10.4 6.77 6.89 2 10.00 35.0 19455.74 0.00 2717.87 0.96 17 125.88 174.64 11.8 6.74 6.89 2 10.00 35.0 20083.34 0.00 2798.36 0.96 18 132.62 180.31 11.8 6.74 6.89 2 10.00 35.0 20735.49 0.00 2889.19 0.96 19 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.96 31 0.92 32 0.96 33 0.96 34 0.96 35 0.96 36 0.96 37 0.96 38 0.96 39 0.96 40 1.01 139.36 146.06 152.77 159.43 166.10 171.19 176.28 179.34 184.70 190.05 192.49 197.76 203.03 205.54 212.01 218.48 224.89 231.30 235.88 244.00 250.22 256.44 184.41 188.89 191.67 194.97 150.80 152.05 92.13 161.97 162.89 73.62 152.04 142.66 64.72 156.31 141.04 124.14 108.02 66.94 98.98 58.93 43.71 18.01 13.2 6.70 13.1 6.70 14.5 14.5 15.9 15.9 15.9 17.3 17.3 17.3 18.6 18.6 18.6 20.0 20.0 21.4 21.4 22.8 22.8 24.1 24.1 25.5 6.67 6.67 5.09 5.09 3.06 5.35 5.35 2.44 5.27 5.27 2.51 6.47 6.47 6.41 6.41 4.58 8.12 6.22 6.22 3.56 6.89 2 10.00 35.0 21207.66 6.89 2 10.00 35.0 21722.65 6.89 2 10.00 35.0 22041.49 6.89 2 10.00 35.0 22421.01 5.29 2 10.00 35.0 17341.63 5.29 2 10.00 35.0 17486.28 3.18 2 10.00 35.0 10571.38 5.61 2 10.00 35.0 18469.03 5.61 2 10.00 35.0 18427.15 2.56 2 10.00 35.0 8293.02 5.56 2 10.00 35.0 17112.46 5.56 2 10.00 35.0 16033.65 2.65 6 0.00 45.0 6471.75 6.89 2 10.00 35.0 17519.16 6.89 2 10.00 35.0 15763.43 6.89 2 10.00 35.0 13824.26 6.89 2 10.00 35.0 11970.57 4.96 2 10.00 35.0 7375.76 8.81 2 10.00 35.0 10783.94 6.81 2 10.00 35.0 6282.76 6.81 2 10.00 35.0 4501.28 3.94 1 50.00 25.0 1801.18 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2949.13 3020.83 3060.75 3113.47 3129.89 3156.01 3171.26 3146.37 3139.15 3095.75 2940.31 2754.78 2242.76 2432.55 2188.67 1921.95 1664.02 1425.39 1173.64 885.87 634.19 451.14 41 260.00 14.53 25.5 4.50 4.99 1 50.00 25.0 1452.99 0.00 284.47 1.01 42 264.50 4.84 25.5 4.50 4.99 1 50.00 25.0 484.30 0.00 88.42 1.01 X -S Area: 4674.39 Path Length: 261.65 X -S Weight: 530861.00 Reclamation Conditions IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SSl-Reclamation.gmf Processed: 05 Mar 2024 08:34:55 DATA: Analysis 1 - SS -1 - Reclamation Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 0.00 4753.63 229.99 4756.00 305.51 Profile: 2 288.62 Profile: 3 0.00 Profile: 4 291.62 Profile: 5 0.00 4698.00 Profile: 6 0.00 4696.00 Profile: 7 0.00 4694.00 4754.96 4753.00 4753.19 (2 points) 4753.10 (2 points) 4748.00 (3 points) 4748.00 (5 points) 4697.69 (5 points) 4695.69 (5 points) 4693.69 Slope Surface (14 points) 4754.96 4753.00 4753.19 0.00 4753.63 229.99 4756.00 305.51 81.03 251.81 321.07 4754.96 4753.00 4748.00 118.00 267.98 4753.00 170.00 4753.00 277.26 Material beneath: 6 - Slurry Wall 291.62 4753.10 Material beneath: 2 - Sand and Gravel 288.62 4748.00 Material beneath: 2 - Sand and Gravel 321.07 4748.00 470.50 4698.19 Material beneath: 4 - Stable Siltstone Bedrock 98.47 4697.69 290.49 4697.83 Material beneath: 3 - Stable Claystone Bedrock 98.47 4695.69 290.49 4695.83 Material beneath: 5 - Stable Sandstone Bedrock 98.47 4693.69 290.49 4693.83 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 4727.00 81.03 4754.96 251.81 4753.00 321.07 4748.00 288.62 4727.00 118.00 4753.00 267.98 4753.00 470.50 4698.19 291.62 4726.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 266.90 YL: 4753.00 XR: 470.50 YR: Centre: XC: 441.71 YC: 4996.81 Radius: R: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR R 10.00 250.00 20 50 470.50 470.50 470.50 170.00 277.26 600.00 4754.00 199.95 4756.02 297.26 4698.19 4696.19 4694.19 4754.00 4756.02 4698.00 470.50 4698.19 4698.19 300.00 600.00 600.00 600.00 199.95 297.26 600.00 RESULTS: Analysis 1 - SS -1 - Reclamation Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.401 Analysis Summary There were: 18855 successful analyses from a total of 20001 trial failure surfaces 1146 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.21 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4754.28 467.08 4699.33 440.84 4980.25 282.14 2.211 <-- Critical Surface 2 271.90 4754.28 466.55 4699.51 439.09 4975.18 277.04 2.212 3 271.90 4754.28 466.03 4699.68 437.34 4970.10 271.94 2.213 4 271.90 4754.28 465.50 4699.86 435.58 4965.01 266.84 2.214 5 271.90 4754.28 468.13 4698.98 445.81 4995.59 297.45 2.215 6 271.90 4754.28 467.61 4699.15 444.06 4990.55 292.35 2.216 7 271.90 4754.28 467.08 4699.33 442.32 4985.51 287.24 2.216 8 271.90 4754.28 466.55 4699.51 440.57 4980.45 282.14 2.217 9 271.37 4754.10 466.03 4699.68 436.68 4970.03 271.94 2.218 10 271.90 4754.28 466.03 4699.68 438.82 4975.38 277.04 2.218 11 271.90 4754.28 468.66 4698.80 449.02 5005.83 307.65 2.219 12 271.90 4754.28 465.50 4699.86 437.07 4970.31 271.94 2.219 13 271.90 4754.28 468.13 4698.98 447.28 5000.81 302.55 2.220 14 271.37 4754.10 467.61 4699.15 443.38 4990.50 292.35 2.220 15 271.90 4754.28 467.61 4699.15 445.54 4995.78 297.45 2.221 16 271.37 4754.10 467.08 4699.33 441.64 4985.45 287.24 2.221 17 271.90 4754.28 467.08 4699.33 443.79 4990.75 292.35 2.222 18 271.37 4754.10 466.55 4699.51 439.90 4980.39 282.14 2.222 19 271.90 4754.28 466.55 4699.51 442.05 4985.70 287.24 2.223 20 271.90 4754.28 469.18 4698.63 452.22 5016.03 317.86 2.223 21 271.37 4754.10 466.03 4699.68 438.16 4975.32 277.04 2.223 22 271.90 4754.28 466.03 4699.68 440.30 4980.65 282.14 2.224 23 271.37 4754.10 465.50 4699.86 436.41 4970.24 271.94 2.224 24 271.90 4754.28 468.66 4698.80 450.49 5011.03 312.76 2.224 25 271.90 4754.28 465.50 4699.86 438.56 4975.58 277.04 2.224 26 271.37 4754.10 468.13 4698.98 446.58 5000.76 302.55 2.225 27 271.90 4754.28 468.13 4698.98 448.75 5006.02 307.65 2.225 28 271.37 4754.10 467.61 4699.15 444.84 4995.73 297.45 2.226 29 271.90 4754.28 467.61 4699.15 447.01 5001.00 302.55 2.226 30 270.85 4753.93 467.08 4699.33 440.96 4985.39 287.24 2.226 31 271.37 4754.10 467.08 4699.33 443.11 4990.69 292.35 2.227 32 271.90 4754.28 467.08 4699.33 445.27 4995.98 297.45 2.227 33 270.85 4753.93 466.55 4699.51 439.23 4980.32 282.14 2.227 34 271.37 4754.10 469.18 4698.63 451.51 5015.99 317.86 2.228 35 271.37 4754.10 466.55 4699.51 441.37 4985.64 287.24 2.228 36 271.90 4754.28 469.18 4698.63 453.69 5021.22 322.96 2.228 37 271.90 4754.28 466.55 4699.51 443.52 4990.94 292.35 2.228 38 270.85 4753.93 466.03 4699.68 437.49 4975.25 277.04 2.228 39 271.37 4754.10 466.03 4699.68 439.63 4980.59 282.14 2.228 40 271.37 4754.10 468.66 4698.80 449.77 5010.99 312.76 2.229 41 271.90 4754.28 466.03 4699.68 441.78 4985.90 287.24 2.229 42 270.85 4753.93 465.50 4699.86 435.76 4970.16 271.94 2.229 43 271.90 4754.28 468.66 4698.80 451.95 5016.22 317.86 2.229 44 271.37 4754.10 465.50 4699.86 437.89 4975.52 277.04 2.229 45 270.85 4753.93 468.13 4698.98 445.88 5000.71 302.55 2.230 46 271.90 4754.28 465.50 4699.86 440.04 4980.85 282.14 2.230 47 271.37 4754.10 468.13 4698.98 448.04 5005.98 307.65 2.230 48 271.90 4754.28 468.13 4698.98 450.21 5011.22 312.76 2.230 49 270.85 4753.93 467.61 4699.15 444.15 4995.68 297.45 2.231 50 271.37 4754.10 467.61 4699.15 446.31 5000.96 302.55 2.231 51 271.90 4754.28 467.61 4699.15 448.47 5006.21 307.65 2.231 52 271.90 4754.28 469.71 4698.45 456.88 5031.37 333.16 2.231 53 270.85 4753.93 467.08 4699.33 442.42 4990.64 292.35 2.232 54 271.37 4754.10 467.08 4699.33 444.57 4995.93 297.45 2.232 55 271.90 4754.28 467.08 4699.33 446.74 5001.20 302.55 2.232 56 271.37 4754.10 469.18 4698.63 452.96 5021.18 322.96 2.233 57 270.85 4753.93 466.55 4699.51 440.69 4985.58 287.24 2.233 58 271.90 4754.28 469.18 4698.63 455.14 5026.39 328.06 2.233 59 271.37 4754.10 466.55 4699.51 442.84 4990.89 292.35 2.233 60 271.90 4754.28 466.55 4699.51 444.99 4996.17 297.45 2.233 61 270.32 4753.76 466.55 4699.51 438.56 4980.26 282.14 2.233 62 270.85 4753.93 466.03 4699.68 438.96 4980.52 282.14 2.234 63 271.37 4754.10 466.03 4699.68 441.10 4985.84 287.24 2.234 64 270.85 4753.93 468.66 4698.80 449.06 5010.94 312.76 2.234 65 271.37 4754.10 468.66 4698.80 451.23 5016.18 317.86 2.234 66 271.90 4754.28 468.66 4698.80 453.41 5021.40 322.96 2.234 67 271.90 4754.28 466.03 4699.68 443.25 4991.14 292.35 2.234 68 270.85 4753.93 465.50 4699.86 437.23 4975.45 277.04 2.234 69 270.32 4753.76 466.03 4699.68 436.83 4975.18 277.04 2.235 70 271.37 4754.10 465.50 4699.86 439.36 4980.79 282.14 2.235 71 270.85 4753.93 468.13 4698.98 447.34 5005.93 307.65 2.235 72 271.37 4754.10 468.13 4698.98 449.50 5011.18 312.76 2.235 73 271.90 4754.28 465.50 4699.86 441.51 4986.10 287.24 2.235 74 271.90 4754.28 468.13 4698.98 451.67 5016.41 317.86 2.235 75 270.32 4753.76 465.50 4699.86 435.10 4970.09 271.94 2.236 76 270.85 4753.93 467.61 4699.15 445.61 5000.91 302.55 2.236 77 270.32 4753.76 467.61 4699.15 443.47 4995.62 297.45 2.236 78 271.37 4754.10 467.61 4699.15 447.77 5006.17 307.65 2.236 79 271.37 4754.10 469.71 4698.45 456.14 5031.34 333.16 2.236 80 271.90 4754.28 469.71 4698.45 458.33 5036.53 338.27 2.236 81 271.90 4754.28 467.61 4699.15 449.94 5011.41 312.76 2.237 82 270.85 4753.93 467.08 4699.33 443.88 4995.87 297.45 2.237 83 270.32 4753.76 467.08 4699.33 441.74 4990.58 292.35 2.237 84 271.37 4754.10 467.08 4699.33 446.03 5001.15 302.55 2.237 85 271.37 4754.10 469.18 4698.63 454.41 5026.36 328.06 2.238 86 271.90 4754.28 467.08 4699.33 448.20 5006.40 307.65 2.238 87 270.85 4753.93 469.18 4698.63 452.24 5021.14 322.96 2.238 88 271.90 4754.28 469.18 4698.63 456.60 5031.55 333.16 2.238 89 270.85 4753.93 466.55 4699.51 442.15 4990.83 292.35 2.238 90 271.37 4754.10 465.50 4699.86 434.93 4964.94 266.84 2.238 91 271.37 4754.10 466.55 4699.51 444.30 4996.12 297.45 2.238 92 270.32 4753.76 466.55 4699.51 440.02 4985.52 287.24 2.238 93 271.90 4754.28 466.55 4699.51 446.46 5001.39 302.55 2.239 94 270.85 4753.93 468.66 4698.80 450.51 5016.14 317.86 2.239 95 270.85 4753.93 466.03 4699.68 440.42 4985.78 287.24 2.239 96 271.37 4754.10 468.66 4698.80 452.68 5021.37 322.96 2.239 97 270.32 4753.76 468.66 4698.80 448.35 5010.90 312.76 2.239 98 271.37 4754.10 466.03 4699.68 442.57 4991.09 292.35 2.239 99 271.90 4754.28 468.66 4698.80 454.87 5026.58 328.06 2.239 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: 4754.28 Centre: XC: 440.84 YC: 4980.25 Generated failure surface: (20 points) 271.90 4754.28 280.77 4747.91 4730.94 318.49 4726.01 328.42 4721.47 4710.19 369.65 4707.24 380.26 4704.69 4699.53 XR: 467.08 YR: 4699.33 Radius: R: 282.14 289.87 338.51 390.97 4741.89 4717.32 4702.55 299.21 348.76 401.75 4736.23 4713.56 4700.83 308.75 359.14 412.58 423.46 4699.33 4698.64 434.37 4698.18 445.28 4698.14 456.19 4698.53 467.08 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 14.99 35.7 5.36 6.60 1 50.00 25.0 1498.61 0.00 228.73 1.07 2 277.26 23.01 35.7 3.38 4.16 1 50.00 25.0 2301.34 0.00 576.91 1.07 3 280.64 37.26 33.5 3.99 4.79 2 10.00 35.0 3804.94 0.00 785.96 0.99 4 284.63 47.76 33.5 3.99 4.78 2 10.00 35.0 5012.52 0.00 1036.69 0.99 5 288.62 17.18 33.5 1.25 1.50 6 0.00 45.0 1717.91 0.00 1054.86 0.92 6 289.87 25.57 31.2 1.75 2.04 6 0.00 45.0 2556.99 0.00 1149.16 0.92 7 291.62 95.20 31.2 5.64 6.60 2 10.00 35.0 10271.27 0.00 1525.42 0.98 8 297.26 36.68 31.2 1.95 2.28 2 10.00 35.0 3994.72 0.00 1719.31 0.98 9 299.21 124.69 29.0 6.30 7.21 2 10.00 35.0 13746.58 0.00 1852.74 0.97 10 305.51 67.46 29.0 3.24 3.71 2 10.00 35.0 7531.85 0.00 1974.45 0.97 11 308.75 105.17 26.8 4.87 5.46 2 10.00 35.0 11853.95 0.00 2095.86 0.97 12 313.62 109.25 26.8 4.87 5.46 2 10.00 35.0 12441.39 0.00 2199.89 0.97 13 318.49 59.28 24.6 2.58 2.83 2 10.00 35.0 6800.31 0.00 2303.36 0.96 14 321.07 85.96 24.6 3.67 4.04 2 10.00 35.0 9885.31 0.00 2347.97 0.96 15 324.74 87.64 24.6 3.67 4.04 2 10.00 35.0 10078.23 0.00 2393.83 0.96 16 328.42 112.92 22.4 4.65 5.03 2 10.00 35.0 12985.86 0.00 2466.68 0.96 17 333.07 134.12 22.4 5.44 5.88 2 10.00 35.0 15480.04 255.57 2521.13 0.96 18 338.51 127.86 20.2 5.12 5.46 2 10.00 35.0 14852.67 659.16 2608.23 0.95 19 343.64 128.74 20.2 5.12 5.46 2 10.00 35.0 15037.21 1028.14 2647.54 0.95 20 348.76 130.79 17.9 5.19 5.46 2 10.00 35.0 15352.73 1361.58 2703.73 0.95 21 353.95 130.53 17.9 5.19 5.46 2 10.00 35.0 15390.73 1659.07 2715.43 0.95 22 359.14 131.23 15.7 5.25 5.46 2 10.00 35.0 15535.73 1920.80 2742.83 0.95 23 364.40 129.80 15.7 5.25 5.46 2 10.00 35.0 15423.35 2146.13 2726.55 0.95 24 369.65 129.08 13.5 5.31 5.46 2 10.00 35.0 15390.04 2335.50 2724.38 0.96 25 374.96 126.45 13.5 5.31 5.46 2 10.00 35.0 15123.98 2488.65 2679.77 0.96 26 380.26 124.30 11.3 5.35 5.46 2 10.00 35.0 14908.30 2605.39 2647.46 0.96 27 385.62 120.47 11.3 5.35 5.46 2 10.00 35.0 14487.03 2686.09 2574.25 0.96 28 390.97 116.86 9.1 5.39 5.46 2 10.00 35.0 14086.55 2730.15 2511.31 0.96 29 396.36 111.82 9.1 5.39 5.46 2 10.00 35.0 13508.80 2737.91 2409.40 0.96 30 401.75 106.76 6.9 5.42 5.46 2 10.00 35.0 12923.85 2709.16 2315.29 0.97 31 407.17 100.50 6.9 5.42 5.46 2 10.00 35.0 12188.74 2644.14 2184.17 0.97 32 412.58 94.02 4.6 5.44 5.46 2 10.00 35.0 11421.48 2542.71 2058.33 0.98 33 418.02 86.56 4.6 5.44 5.46 2 10.00 35.0 10530.41 2405.01 1898.01 0.98 34 423.46 78.70 2.4 5.45 5.46 2 10.00 35.0 9586.11 2231.09 1740.01 0.99 35 428.92 70.04 2.4 5.45 5.46 2 10.00 35.0 8540.56 2021.07 1550.26 0.99 36 434.37 60.87 0.2 5.46 5.46 2 10.00 35.0 7426.12 1774.79 1359.50 1.00 37 439.83 51.04 0.2 5.46 5.46 2 10.00 35.0 6228.65 1492.43 1140.28 1.00 38 445.28 40.62 -2.0 5.45 5.46 2 10.00 35.0 4953.97 1174.32 916.22 1.01 39 450.74 29.66 -2.0 5.45 5.46 2 10.00 35.0 3607.98 820.14 667.41 1.01 40 456.19 14.80 -4.2 4.12 4.13 2 10.00 35.0 1789.38 364.89 443.28 1.03 41 460.31 7.90 -4.2 4.12 4.13 2 10.00 35.0 937.43 121.63 232.81 1.03 42 464.43 1.43 -4.2 2.65 2.66 2 10.00 35.0 164.83 0.00 63.99 1.03 X -S Area: 3434.95 Path Length: 207.39 X -S Weight: 401358.53 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Gale...\S.V. Pit-SSl-Reclamation- Pseudo Static.gmf Processed: 05 Mar 2024 08:38:55 DATA: Analysis 1 - SS -1 - Reclamation Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (12 points) 0.00 4754.96 4753.63 229.99 4756.00 305.51 Profile: 2 288.62 Profile: 3 0.00 Profile: 4 291.62 Profile: 5 0.00 4698.00 Profile: 6 0.00 4696.00 Profile: 7 0.00 4694.00 4753.00 4753.19 (2 points) 4753.10 (2 points) 4748.00 (3 points) 4748.00 (5 points) 4697.69 (5 points) 4695.69 (5 points) 4693.69 Slope Surface (14 points) 0.00 4754.96 4753.63 229.99 4753.00 4756.00 305.51 4753.19 Material beneath: 1 - Overburden/Clay 81.03 4754.96 118.00 251.81 4753.00 4753.00 170.00 267.98 4753.00 321.07 4748.00 Material beneath: 6 - Slurry Wall 291.62 4753.10 Material beneath: 2 - Sand and Gravel 288.62 4748.00 Material beneath: 2 - Sand and Gravel 321.07 4748.00 470.50 4698.19 Material beneath: 4 - Stable Siltstone Bedrock 98.47 4697.69 290.49 4697.83 Material beneath: 3 - Stable Claystone Bedrock 98.47 4695.69 290.49 4695.83 Material beneath: 5 - Stable Sandstone Bedrock 98.47 4693.69 290.49 4693.83 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 4727.00 81.03 251.81 321.07 4754.96 4753.00 4748.00 288.62 4727.00 118.00 267.98 470.50 4753.00 4753.00 4698.19 291.62 4726.00 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Earthquake Force 266.90 441.71 YL: YC: 4753.00 4996.81 Pseudo -static earthquake (seismic) coefficient: 0.070 XR: 470.50 YR: Radius: R: 4754.00 199.95 277.26 4756.02 470.50 470.50 470.50 170.00 277.26 600.00 4698.19 4696.19 4694.19 4754.00 4756.02 4698.00 470.50 4698.19 4698.19 300.00 297.26 600.00 600.00 600.00 199.95 297.26 600.00 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 250.00 20 20 50 RESULTS: Analysis 1 - SS -1 - Reclamation Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.717 Analysis Summary There were: 18855 successful analyses from a total of 20001 trial failure surfaces 1146 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.76 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4754.28 467.08 4699.33 440.84 4980.25 282.14 1.755 <-- Critical Surface 2 271.90 4754.28 466.55 4699.51 439.09 4975.18 277.04 1.756 3 271.90 4754.28 466.03 4699.68 437.34 4970.10 271.94 1.757 4 271.90 4754.28 465.50 4699.86 435.58 4965.01 266.84 1.757 5 271.90 4754.28 468.13 4698.98 445.81 4995.59 297.45 1.758 6 271.90 4754.28 467.61 4699.15 444.06 4990.55 292.35 1.759 7 271.37 4754.10 466.03 4699.68 436.68 4970.03 271.94 1.759 8 271.90 4754.28 467.08 4699.33 442.32 4985.51 287.24 1.760 9 271.90 4754.28 466.55 4699.51 440.57 4980.45 282.14 1.760 10 271.90 4754.28 466.03 4699.68 438.82 4975.38 277.04 1.761 11 271.90 4754.28 465.50 4699.86 437.07 4970.31 271.94 1.761 12 271.37 4754.10 467.61 4699.15 443.38 4990.50 292.35 1.762 13 271.90 4754.28 468.66 4698.80 449.02 5005.83 307.65 1.762 14 271.37 4754.10 467.08 4699.33 441.64 4985.45 287.24 1.762 15 271.90 4754.28 468.13 4698.98 447.28 5000.81 302.55 1.762 16 271.37 4754.10 466.55 4699.51 439.90 4980.39 282.14 1.763 17 271.90 4754.28 467.61 4699.15 445.54 4995.78 297.45 1.763 18 271.37 4754.10 466.03 4699.68 438.16 4975.32 277.04 1.764 19 271.90 4754.28 467.08 4699.33 443.79 4990.75 292.35 1.764 20 271.37 4754.10 465.50 4699.86 436.41 4970.24 271.94 1.764 21 271.90 4754.28 466.55 4699.51 442.05 4985.70 287.24 1.765 22 271.90 4754.28 469.18 4698.63 452.22 5016.03 317.86 1.765 23 271.37 4754.10 468.13 4698.98 446.58 5000.76 302.55 1.765 24 270.85 4753.93 467.08 4699.33 440.96 4985.39 287.24 1.765 25 271.90 4754.28 466.03 4699.68 440.30 4980.65 282.14 1.765 26 270.85 4753.93 466.55 4699.51 439.23 4980.32 282.14 1.766 27 271.90 4754.28 465.50 4699.86 438.56 4975.58 277.04 1.766 28 271.90 4754.28 468.66 4698.80 450.49 5011.03 312.76 1.766 29 271.37 4754.10 467.61 4699.15 444.84 4995.73 297.45 1.766 30 270.85 4753.93 466.03 4699.68 437.49 4975.25 277.04 1.766 31 271.37 4754.10 467.08 4699.33 443.11 4990.69 292.35 1.767 32 271.90 4754.28 468.13 4698.98 448.75 5006.02 307.65 1.767 33 270.85 4753.93 465.50 4699.86 435.76 4970.16 271.94 1.767 34 271.37 4754.10 466.55 4699.51 441.37 4985.64 287.24 1.767 35 271.90 4754.28 467.61 4699.15 447.01 5001.00 302.55 1.767 36 271.37 4754.10 469.18 4698.63 451.51 5015.99 317.86 1.768 37 270.85 4753.93 468.13 4698.98 445.88 5000.71 302.55 1.768 38 271.37 4754.10 466.03 4699.68 439.63 4980.59 282.14 1.768 39 271.90 4754.28 467.08 4699.33 445.27 4995.98 297.45 1.768 40 271.37 4754.10 468.66 4698.80 449.77 5010.99 312.76 1.768 41 271.37 4754.10 465.50 4699.86 437.89 4975.52 277.04 1.769 42 270.85 4753.93 467.61 4699.15 444.15 4995.68 297.45 1.769 43 271.90 4754.28 466.55 4699.51 443.52 4990.94 292.35 1.769 44 271.90 4754.28 469.18 4698.63 453.69 5021.22 322.96 1.769 45 271.37 4754.10 468.13 4698.98 448.04 5005.98 307.65 1.769 46 270.32 4753.76 466.55 4699.51 438.56 4980.26 282.14 1.769 47 270.85 4753.93 467.08 4699.33 442.42 4990.64 292.35 1.769 48 271.90 4754.28 466.03 4699.68 441.78 4985.90 287.24 1.770 49 271.90 4754.28 468.66 4698.80 451.95 5016.22 317.86 1.770 50 271.37 4754.10 467.61 4699.15 446.31 5000.96 302.55 1.770 51 270.85 4753.93 466.55 4699.51 440.69 4985.58 287.24 1.770 52 271.90 4754.28 465.50 4699.86 440.04 4980.85 282.14 1.770 53 270.32 4753.76 466.03 4699.68 436.83 4975.18 277.04 1.770 54 270.85 4753.93 466.03 4699.68 438.96 4980.52 282.14 1.771 55 271.37 4754.10 467.08 4699.33 444.57 4995.93 297.45 1.771 56 271.90 4754.28 468.13 4698.98 450.21 5011.22 312.76 1.771 57 270.32 4753.76 465.50 4699.86 435.10 4970.09 271.94 1.771 58 270.85 4753.93 468.66 4698.80 449.06 5010.94 312.76 1.771 59 270.85 4753.93 465.50 4699.86 437.23 4975.45 277.04 1.771 60 271.37 4754.10 466.55 4699.51 442.84 4990.89 292.35 1.772 61 270.32 4753.76 467.61 4699.15 443.47 4995.62 297.45 1.772 62 271.37 4754.10 469.18 4698.63 452.96 5021.18 322.96 1.772 63 271.90 4754.28 467.61 4699.15 448.47 5006.21 307.65 1.772 64 271.90 4754.28 469.71 4698.45 456.88 5031.37 333.16 1.772 65 270.85 4753.93 468.13 4698.98 447.34 5005.93 307.65 1.772 66 271.37 4754.10 466.03 4699.68 441.10 4985.84 287.24 1.772 67 270.32 4753.76 467.08 4699.33 441.74 4990.58 292.35 1.772 68 271.90 4754.28 467.08 4699.33 446.74 5001.20 302.55 1.773 69 271.37 4754.10 468.66 4698.80 451.23 5016.18 317.86 1.773 70 271.37 4754.10 465.50 4699.86 439.36 4980.79 282.14 1.773 71 270.85 4753.93 467.61 4699.15 445.61 5000.91 302.55 1.773 72 271.90 4754.28 469.18 4698.63 455.14 5026.39 328.06 1.773 73 271.90 4754.28 466.55 4699.51 444.99 4996.17 297.45 1.773 74 270.32 4753.76 466.55 4699.51 440.02 4985.52 287.24 1.773 75 271.37 4754.10 468.13 4698.98 449.50 5011.18 312.76 1.774 76 270.85 4753.93 467.08 4699.33 443.88 4995.87 297.45 1.774 77 271.90 4754.28 466.03 4699.68 443.25 4991.14 292.35 1.774 78 271.90 4754.28 468.66 4698.80 453.41 5021.40 322.96 1.774 79 270.32 4753.76 468.66 4698.80 448.35 5010.90 312.76 1.774 80 271.37 4754.10 467.61 4699.15 447.77 5006.17 307.65 1.774 81 270.32 4753.76 466.03 4699.68 438.29 4980.46 282.14 1.774 82 270.85 4753.93 466.55 4699.51 442.15 4990.83 292.35 1.774 83 270.85 4753.93 469.18 4698.63 452.24 5021.14 322.96 1.775 84 271.90 4754.28 465.50 4699.86 441.51 4986.10 287.24 1.775 85 271.37 4754.10 469.71 4698.45 456.14 5031.34 333.16 1.775 86 270.32 4753.76 468.13 4698.98 446.63 5005.88 307.65 1.775 87 270.85 4753.93 466.03 4699.68 440.42 4985.78 287.24 1.775 88 271.90 4754.28 468.13 4698.98 451.67 5016.41 317.86 1.775 89 271.37 4754.10 467.08 4699.33 446.03 5001.15 302.55 1.775 90 270.32 4753.76 465.50 4699.86 436.56 4975.38 277.04 1.775 91 270.85 4753.93 468.66 4698.80 450.51 5016.14 317.86 1.775 92 270.85 4753.93 465.50 4699.86 438.69 4980.72 282.14 1.776 93 271.37 4754.10 469.18 4698.63 454.41 5026.36 328.06 1.776 94 270.32 4753.76 467.61 4699.15 444.91 5000.85 302.55 1.776 95 271.37 4754.10 465.50 4699.86 434.93 4964.94 266.84 1.776 96 271.37 4754.10 466.55 4699.51 444.30 4996.12 297.45 1.776 97 271.90 4754.28 467.61 4699.15 449.94 5011.41 312.76 1.776 98 271.90 4754.28 469.71 4698.45 458.33 5036.53 338.27 1.776 99 270.85 4753.93 468.13 4698.98 448.79 5011.14 312.76 1.776 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: Centre: XC: 440.84 YC: Generated failure surface: (20 points) 4754.28 4980.25 XR: 467.08 YR: 4699.33 Radius: R: 282.14 271.90 4754.28 280.77 4747.91 289.87 4741.89 299.21 4736.23 308.75 4730.94 318.49 4726.01 328.42 4721.47 338.51 4717.32 348.76 4713.56 359.14 4710.19 369.65 4707.24 380.26 4704.69 390.97 4702.55 401.75 4700.83 412.58 4699.53 423.46 4698.64 434.37 4698.18 445.28 4698.14 456.19 4698.53 467.08 4699.33 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 14.99 35.7 5.36 6.60 1 50.00 25.0 1498.61 0.00 217.63 1.03 2 277.26 23.01 35.7 3.38 4.16 1 50.00 25.0 2301.34 0.00 554.31 1.03 3 280.64 37.26 33.5 3.99 4.79 2 10.00 35.0 3804.94 0.00 751.46 0.95 4 284.63 47.76 33.5 3.99 4.78 2 10.00 35.0 5012.52 0.00 991.47 0.95 5 288.62 17.18 33.5 1.25 1.50 6 0.00 45.0 1717.91 0.00 995.36 0.87 6 289.87 25.57 31.2 1.75 2.04 6 0.00 45.0 2556.99 0.00 1088.29 0.87 7 291.62 95.20 31.2 5.64 6.60 2 10.00 35.0 10271.27 0.00 1463.56 0.94 8 297.26 36.68 31.2 1.95 2.28 2 10.00 35.0 3994.72 0.00 1649.65 0.94 9 299.21 124.69 29.0 6.30 7.21 2 10.00 35.0 13746.58 0.00 1782.96 0.94 10 305.51 67.46 29.0 3.24 3.71 2 10.00 35.0 7531.85 0.00 1900.12 0.94 11 308.75 105.17 26.8 4.87 5.46 2 10.00 35.0 11853.95 0.00 2022.85 0.93 12 313.62 109.25 26.8 4.87 5.46 2 10.00 35.0 12441.39 0.00 2123.30 0.93 13 318.49 59.28 24.6 2.58 2.83 2 10.00 35.0 6800.31 0.00 2229.57 0.93 14 321.07 85.96 24.6 3.67 4.04 2 10.00 35.0 9885.31 0.00 2272.76 0.93 15 324.74 87.64 24.6 3.67 4.04 2 10.00 35.0 10078.23 0.00 2317.16 0.93 16 328.42 112.92 22.4 4.65 5.03 2 10.00 35.0 12985.86 0.00 2394.51 0.93 17 333.07 134.12 22.4 5.44 5.88 2 10.00 35.0 15480.04 255.57 2448.65 0.93 18 338.51 127.86 20.2 5.12 5.46 2 10.00 35.0 14852.67 659.16 2542.34 0.93 19 343.64 128.74 20.2 5.12 5.46 2 10.00 35.0 15037.21 1028.14 2582.40 0.93 20 348.76 130.79 17.9 5.19 5.46 2 10.00 35.0 15352.73 1361.58 2645.49 0.93 21 353.95 130.53 17.9 5.19 5.46 2 10.00 35.0 15390.73 1659.07 2658.21 0.93 22 359.14 131.23 15.7 5.25 5.46 2 10.00 35.0 15535.73 1920.80 2692.75 0.93 23 364.40 129.80 15.7 5.25 5.46 2 10.00 35.0 15423.35 2146.13 2677.67 0.93 24 369.65 129.08 13.5 5.31 5.46 2 10.00 35.0 15390.04 2335.50 2682.72 0.94 25 374.96 126.45 13.5 5.31 5.46 2 10.00 35.0 15123.98 2488.65 2639.42 0.94 26 380.26 124.30 11.3 5.35 5.46 2 10.00 35.0 14908.30 2605.39 2614.23 0.94 27 385.62 120.47 11.3 5.35 5.46 2 10.00 35.0 14487.03 2686.09 2542.35 0.94 28 390.97 116.86 9.1 5.39 5.46 2 10.00 35.0 14086.55 2730.15 2486.29 0.95 29 396.36 111.82 9.1 5.39 5.46 2 10.00 35.0 13508.80 2737.91 2385.67 0.95 30 401.75 106.76 6.9 5.42 5.46 2 10.00 35.0 12923.85 2709.16 2297.99 0.96 31 407.17 100.50 6.9 5.42 5.46 2 10.00 35.0 12188.74 2644.14 2167.99 0.96 32 412.58 94.02 4.6 5.44 5.46 2 10.00 35.0 11421.48 2542.71 2047.95 0.97 33 418.02 86.56 4.6 5.44 5.46 2 10.00 35.0 10530.41 2405.01 1888.49 0.97 34 423.46 78.70 2.4 5.45 5.46 2 10.00 35.0 9586.11 2231.09 1735.41 0.98 35 428.92 70.04 2.4 5.45 5.46 2 10.00 35.0 8540.56 2021.07 1546.16 0.98 36 434.37 60.87 0.2 5.46 5.46 2 10.00 35.0 7426.12 1774.79 1359.19 1.00 37 439.83 51.04 0.2 5.46 5.46 2 10.00 35.0 6228.65 1492.43 1140.02 1.00 38 445.28 40.62 -2.0 5.45 5.46 2 10.00 35.0 4953.97 1174.32 918.32 1.01 39 450.74 29.66 -2.0 5.45 5.46 2 10.00 35.0 3607.98 820.14 668.97 1.01 40 456.19 14.80 -4.2 4.12 4.13 2 10.00 35.0 1789.38 364.89 445.59 1.03 41 460.31 7.90 -4.2 4.12 4.13 2 10.00 35.0 937.43 121.63 234.17 1.03 42 464.43 1.43 -4.2 2.65 2.66 2 10.00 35.0 164.83 0.00 64.48 1.03 X -S Area: 3434.95 Path Length: 207.39 X -S Weight: 401358.53 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7S-Reclamation.gmf Processed: 04 Mar 2024 14:53:15 DATA: Analysis 1 - SS -7S - Reclamation Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 176.28 4752.00 190.05 4756.72 202.90 4761.00 222.90 4761.02 235.88 4756.69 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.54 291.85 4754.07 297.25 4755.96 319.91 4757.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 203.03 4756.71 206.03 4756.71 Profile: 3 (3 points) Material beneath: 2 - Sand and Gravel 17.19 4698.97 176.28 4752.00 203.03 4752.00 Profile: 4 (2 points) Material beneath: 2 - Sand and Gravel 206.03 4752.00 319.91 4752.00 Profile: 5 (4 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4698.97 17.19 4698.97 204.50 4698.95 319.91 4698.95 Slope Surface (14 points) 0.00 4698.97 4761.00 222.90 4761.02 4756.02 285.75 4754.54 Phreatic Surface (5 points) 0.00 4731.50 Failure Surface 17.19 235.88 291.85 4698.97 17.19 4698.97 4756.69 4754.07 176.28 260.00 297.25 4698.97 203.03 Initial circular surface for critical search defined by: XL,XR,R Intersects: Centre: XL: XC: Variable Restraints 17.19 61.02 Parameter descriptor: Range of variation: Trial positions within range: YL: YC: 4698.97 5096.56 XR: XL XR R 10.00 10.00 350.00 20 20 50 RESULTS: Analysis 1 - SS -7S - Reclamation Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface 4752.00 4758.00 4755.96 4730.50 274.00 YR: Radius: R: 190.05 274.00 319.91 206.03 4757.98 400.00 4756.72 4757.98 4757.00 202.90 280.30 4731.50 319.91 Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.571 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.53 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 21.14 4700.29 269.00 4757.99 54.83 5116.78 417.86 2.531 <-- Critical Surface 2 21.66 4700.46 269.00 4757.99 56.85 5109.67 410.71 2.532 3 22.19 4700.64 269.00 4757.99 58.87 5102.54 403.57 2.532 4 20.08 4699.94 269.00 4757.99 49.08 5138.26 439.29 2.536 5 20.61 4700.11 269.00 4757.99 51.11 5131.18 432.14 2.537 6 21.14 4700.29 269.00 4757.99 53.13 5124.08 425.00 2.538 7 21.66 4700.46 269.00 4757.99 55.15 5116.97 417.86 2.538 8 22.19 4700.64 269.00 4757.99 57.17 5109.86 410.71 2.539 9 20.61 4700.11 269.53 4757.99 51.58 5131.14 432.14 2.540 10 21.14 4700.29 269.53 4757.99 53.60 5124.04 425.00 2.541 11 21.66 4700.46 269.53 4757.99 55.61 5116.94 417.86 2.542 12 19.56 4699.76 269.00 4757.99 45.37 5152.60 453.57 2.542 13 22.19 4700.64 269.53 4757.99 57.63 5109.82 410.71 2.542 14 20.08 4699.94 269.00 4757.99 47.39 5145.53 446.43 2.543 15 20.61 4700.11 269.00 4757.99 49.41 5138.45 439.29 2.544 16 20.61 4700.11 270.05 4757.99 52.05 5131.11 432.14 2.544 17 21.14 4700.29 269.00 4757.99 51.43 5131.37 432.14 2.544 18 21.14 4700.29 270.05 4757.99 54.06 5124.01 425.00 2.545 19 21.66 4700.46 269.00 4757.99 53.45 5124.27 425.00 2.545 20 19.56 4699.76 269.53 4757.99 45.85 5152.57 453.57 2.545 21 21.66 4700.46 270.05 4757.99 56.08 5116.90 417.86 2.545 22 22.19 4700.64 269.00 4757.99 55.47 5117.17 417.86 2.546 23 18.51 4699.41 269.00 4757.99 39.63 5173.94 475.00 2.546 24 22.19 4700.64 270.05 4757.99 58.09 5109.78 410.71 2.546 25 20.08 4699.94 269.53 4757.99 47.87 5145.50 446.43 2.546 26 19.03 4699.58 269.00 4757.99 41.66 5166.89 467.86 2.547 27 20.61 4700.11 269.53 4757.99 49.88 5138.42 439.29 2.547 28 21.14 4700.29 269.53 4757.99 51.90 5131.33 432.14 2.548 29 19.56 4699.76 269.00 4757.99 43.68 5159.84 460.71 2.548 30 21.14 4700.29 270.58 4757.98 54.53 5123.97 425.00 2.548 31 19.56 4699.76 270.05 4757.99 46.33 5152.54 453.57 2.548 32 21.66 4700.46 269.53 4757.99 53.92 5124.24 425.00 2.548 33 21.66 4700.46 270.58 4757.98 56.54 5116.86 417.86 2.549 34 22.19 4700.64 269.53 4757.99 55.94 5117.13 417.86 2.549 35 20.08 4699.94 269.00 4757.99 45.70 5152.78 453.57 2.549 36 22.19 4700.64 270.58 4757.98 58.55 5109.74 410.71 2.549 37 20.08 4699.94 270.05 4757.99 48.34 5145.47 446.43 2.549 38 19.03 4699.58 269.53 4757.99 42.14 5166.87 467.86 2.550 39 20.61 4700.11 269.00 4757.99 47.72 5145.72 446.43 2.550 40 20.61 4700.11 270.05 4757.99 50.36 5138.39 439.29 2.550 41 21.14 4700.29 269.00 4757.99 49.74 5138.64 439.29 2.551 42 19.56 4699.76 269.53 4757.99 44.16 5159.82 460.71 2.551 43 21.14 4700.29 270.05 4757.99 52.37 5131.30 432.14 2.551 44 21.14 4700.29 271.11 4757.98 54.99 5123.94 425.00 2.551 45 21.66 4700.46 269.00 4757.99 51.76 5131.56 432.14 2.552 46 21.66 4700.46 270.05 4757.99 54.39 5124.20 425.00 2.552 47 18.51 4699.41 269.00 4757.99 37.94 5181.16 482.14 2.552 48 21.66 4700.46 271.11 4757.98 57.00 5116.82 417.86 2.552 49 22.19 4700.64 269.00 4757.99 53.78 5124.46 425.00 2.552 50 20.08 4699.94 269.53 4757.99 46.18 5152.76 453.57 2.553 51 22.19 4700.64 270.05 4757.99 56.40 5117.09 417.86 2.553 52 20.08 4699.94 270.58 4757.98 48.82 5145.44 446.43 2.553 53 22.19 4700.64 271.11 4757.98 59.01 5109.70 410.71 2.553 54 19.03 4699.58 270.05 4757.99 42.62 5166.85 467.86 2.553 55 19.03 4699.58 269.00 4757.99 39.97 5174.12 475.00 2.553 56 20.61 4700.11 269.53 4757.99 48.20 5145.69 446.43 2.554 57 20.61 4700.11 270.58 4757.98 50.83 5138.36 439.29 2.554 58 21.14 4700.29 269.53 4757.99 50.21 5138.61 439.29 2.554 59 19.56 4699.76 269.00 4757.99 41.99 5167.08 467.86 2.554 60 21.14 4700.29 270.58 4757.98 52.84 5131.26 432.14 2.555 61 19.56 4699.76 270.05 4757.99 44.64 5159.79 460.71 2.555 62 21.66 4700.46 269.53 4757.99 52.23 5131.52 432.14 2.555 63 20.08 4699.94 269.00 4757.99 44.01 5160.03 460.71 2.555 64 21.66 4700.46 270.58 4757.98 54.85 5124.16 425.00 2.555 65 18.51 4699.41 269.53 4757.99 38.44 5181.14 482.14 2.555 66 22.19 4700.64 269.53 4757.99 54.24 5124.43 425.00 2.556 67 20.08 4699.94 270.05 4757.99 46.66 5152.73 453.57 2.556 68 22.19 4700.64 270.58 4757.98 56.86 5117.05 417.86 2.556 69 20.08 4699.94 271.11 4757.98 49.29 5145.41 446.43 2.556 70 20.61 4700.11 269.00 4757.99 46.03 5152.97 453.57 2.556 71 19.03 4699.58 269.53 4757.99 40.46 5174.10 475.00 2.557 72 20.61 4700.11 270.05 4757.99 48.67 5145.66 446.43 2.557 73 20.61 4700.11 271.11 4757.98 51.30 5138.32 439.29 2.557 74 19.03 4699.58 270.58 4757.98 43.11 5166.82 467.86 2.558 75 17.98 4699.23 269.00 4757.99 34.23 5195.40 496.43 2.558 76 19.56 4699.76 269.53 4757.99 42.47 5167.06 467.86 2.558 77 21.14 4700.29 269.00 4757.99 48.05 5145.90 446.43 2.558 78 21.14 4700.29 270.05 4757.99 50.68 5138.58 439.29 2.558 79 21.14 4700.29 271.11 4757.98 53.31 5131.23 432.14 2.558 80 19.56 4699.76 270.58 4757.98 45.12 5159.76 460.71 2.558 81 21.66 4700.46 269.00 4757.99 50.07 5138.83 439.29 2.558 82 20.08 4699.94 269.53 4757.99 44.49 5160.00 460.71 2.559 83 21.66 4700.46 270.05 4757.99 52.70 5131.49 432.14 2.559 84 18.51 4699.41 270.05 4757.99 38.92 5181.12 482.14 2.559 85 18.51 4699.41 269.00 4757.99 36.26 5188.37 489.29 2.559 86 21.66 4700.46 271.11 4757.98 55.32 5124.13 425.00 2.559 87 22.19 4700.64 269.00 4757.99 52.08 5131.74 432.14 2.559 88 20.08 4699.94 270.58 4757.98 47.13 5152.70 453.57 2.559 89 22.19 4700.64 270.05 4757.99 54.71 5124.39 425.00 2.559 90 20.61 4700.11 269.53 4757.99 46.51 5152.94 453.57 2.559 91 19.03 4699.58 270.05 4757.99 40.94 5174.08 475.00 2.560 92 19.03 4699.58 269.00 4757.99 38.28 5181.34 482.14 2.560 93 22.19 4700.64 271.11 4757.98 57.33 5117.01 417.86 2.560 94 20.61 4700.11 270.58 4757.98 49.15 5145.63 446.43 2.560 95 20.61 4700.11 271.63 4757.98 51.77 5138.29 439.29 2.561 96 19.56 4699.76 270.05 4757.99 42.96 5167.03 467.86 2.561 97 19.56 4699.76 269.00 4757.99 40.30 5174.31 475.00 2.561 98 21.14 4700.29 269.53 4757.99 48.52 5145.87 446.43 2.561 99 21.14 4700.29 270.58 4757.98 51.16 5138.54 439.29 2.561 Critical Failure Surface (circle 1) Intersects: XL: 21.14 YL: 4700.29 Centre: XC: 54.83 YC: 5116.78 Generated failure surface: (20 points) 21.14 4700.29 34.72 4699.41 4699.44 89.11 4700.33 102.66 4701.67 4708.32 156.18 4711.41 169.33 4714.92 4728.01 220.57 4733.20 232.97 4738.80 4757.99 XR: 269.00 YR: 4757.99 Radius: R: 417.86 48.32 4698.98 61.93 4698.99 116.15 4703.45 129.58 4705.67 182.36 4718.86 195.25 4723.23 245.19 4744.81 257.20 4751.20 Slice Geometry and Properties - Critical Failure Surface (circle 1, 45 slices) Slice Test X -S Base 75.53 142.93 207.99 269.00 PoreWater Normal X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 21.14 1.51 -3.7 2.76 2.77 2 10.00 35.0 174.18 0.00 64.52 1.02 2 23.90 11.77 -3.7 5.41 5.42 2 10.00 35.0 1404.43 214.44 263.81 1.02 3 29.31 23.41 -3.7 5.41 5.42 2 10.00 35.0 2846.58 643.15 533.74 1.02 4 34.72 45.20 -1.8 6.80 6.80 2 10.00 35.0 5525.92 1366.97 818.03 1.01 5 41.52 62.09 -1.8 6.80 6.80 2 10.00 35.0 7608.61 1949.17 1126.21 1.01 6 48.32 78.27 0.0 6.80 6.80 2 10.00 35.0 9598.49 2484.09 1410.32 1.00 7 55.13 93.68 0.0 6.80 6.80 2 10.00 35.0 11487.33 2972.37 1687.85 1.00 8 61.93 108.26 1.9 6.80 6.80 2 10.00 35.0 13270.13 3413.42 1937.78 0.99 9 68.73 122.14 1.9 6.80 6.80 2 10.00 35.0 14960.72 3807.16 2184.61 0.99 10 75.53 135.03 3.8 6.79 6.80 2 10.00 35.0 16524.68 4153.35 2400.71 0.98 11 82.32 147.36 3.8 6.79 6.80 2 10.00 35.0 18014.48 4452.75 2616.98 0.98 12 89.11 158.49 5.6 6.77 6.80 2 10.00 35.0 19351.95 4704.06 2799.66 0.98 13 95.89 169.25 5.6 6.77 6.80 2 10.00 35.0 20637.31 4907.87 2985.21 0.98 14 102.66 178.56 7.5 6.75 6.80 2 10.00 35.0 21741.27 5064.00 3134.88 0.97 15 109.40 187.73 7.5 6.75 6.80 2 10.00 35.0 22821.82 5172.59 3290.02 0.97 16 116.15 195.19 9.4 6.71 6.80 2 10.00 35.0 23687.61 5233.40 3406.94 0.97 17 122.87 202.77 9.4 6.71 6.80 2 10.00 35.0 24563.12 5246.60 3531.79 0.97 18 129.58 208.34 11.2 6.67 6.80 2 10.00 35.0 25188.35 5212.01 3616.40 0.97 19 136.25 214.34 11.2 6.67 6.80 2 10.00 35.0 25858.92 5129.70 3711.01 0.97 20 142.93 218.03 13.1 6.63 6.80 2 10.00 35.0 26244.03 4999.79 3763.71 0.96 21 149.56 222.45 13.1 6.63 6.80 2 10.00 35.0 26710.37 4822.09 3828.24 0.96 22 156.18 224.25 15.0 6.57 6.80 2 10.00 35.0 26856.66 4596.82 3849.50 0.96 23 162.76 227.10 15.0 6.57 6.80 2 10.00 35.0 27121.15 4323.98 3884.20 0.96 24 169.33 242.30 16.8 6.95 7.26 2 10.00 35.0 28843.90 4258.34 3874.51 0.96 25 176.28 213.32 16.8 6.08 6.35 2 10.00 35.0 25214.29 3381.35 3868.19 0.96 26 182.36 271.05 18.7 7.69 8.12 2 10.00 35.0 31641.15 3790.29 3799.85 0.97 27 190.05 183.19 18.7 5.20 5.49 2 10.00 35.0 21130.01 2188.89 3749.29 0.97 28 195.25 268.28 20.6 7.65 8.17 2 10.00 35.0 30558.05 2634.40 3647.20 0.97 29 202.90 107.41 20.6 3.13 3.34 6 0.00 45.0 10875.10 895.48 3060.35 0.93 30 206.03 65.42 20.6 1.96 2.09 2 10.00 35.0 7371.54 504.23 3427.18 0.97 31 207.99 135.80 22.4 4.23 4.57 2 10.00 35.0 15212.32 747.16 3245.01 0.97 32 212.22 128.44 22.4 4.23 4.57 2 10.00 35.0 14254.67 249.02 3030.44 0.97 33 216.45 118.24 22.4 4.12 4.46 2 10.00 35.0 13039.67 0.00 2835.60 0.97 34 220.57 63.58 24.3 2.33 2.56 2 10.00 35.0 6996.01 0.00 2668.04 0.98 35 222.90 124.85 24.3 5.04 5.53 2 10.00 35.0 13740.26 0.00 2423.26 0.98 36 227.94 104.93 24.3 5.04 5.53 2 10.00 35.0 11576.42 0.00 2041.45 0.98 37 232.97 51.31 26.2 2.91 3.24 2 10.00 35.0 5674.88 0.00 1717.50 0.98 38 235.88 71.87 26.2 4.65 5.19 2 10.00 35.0 7928.56 0.00 1497.81 0.98 39 240.53 62.40 26.2 4.65 5.19 2 10.00 35.0 6822.08 0.00 1288.57 0.98 40 245.19 65.79 28.0 6.01 6.80 2 10.00 35.0 7082.93 0.00 1025.98 0.99 41 251.20 48.54 28.0 6.01 6.80 2 10.00 35.0 5069.68 0.00 733.84 0.99 42 257.20 8.71 29.9 1.39 1.60 2 10.00 35.0 879.15 0.00 545.36 1.00 43 258.59 7.85 29.9 1.41 1.63 1 50.00 25.0 784.54 0.00 492.04 1.04 44 260.00 17.51 29.9 4.50 5.19 1 50.00 25.0 1750.72 0.00 341.52 1.04 45 264.50 5.84 29.9 4.50 5.19 1 50.00 25.0 583.61 0.00 106.99 1.04 X -S Area: 5601.83 Path Length: 258.59 X -S Weight: 659227.81 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Gal...\S.V. Pit-SS7S-Reclamation- Pseudo Static.gmf Processed: 04 Mar 2024 14:56:13 DATA: Analysis 1 - SS -7S - Reclamation Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 176.28 4756.69 260.00 4754.07 297.25 Profile: 2 203.03 Profile: 3 17.19 Profile: 4 206.03 Profile: 5 0.00 (12 points) 4752.00 4758.00 4755.96 (2 points) 4756.71 (3 points) 4698.97 (2 points) 4752.00 (4 points) 4698.97 Slope Surface (14 points) 0.00 4698.97 4761.00 222.90 4761.02 4756.02 285.75 4754.54 Material beneath: 1 - Overburden/Clay 190.05 4756.72 202.90 274.00 4757.98 4761.00 222.90 280.30 4756.02 319.91 4757.00 Material beneath: 6 - Slurry Wall 206.03 4756.71 Material beneath: 2 - Sand and Gravel 176.28 4752.00 203.03 4752.00 Material beneath: 2 - Sand and Gravel 319.91 4752.00 Material beneath: 4 - Stable Siltstone Bedrock 17.19 4698.97 204.50 4698.95 Phreatic Surface (5 points) 0.00 4731.50 Failure Surface 4698.97 17.19 235.88 291.85 17.19 Initial circular surface for critical Intersects: Centre: XL: XC: Earthquake Force 17.19 61.02 YL: YC: 4698.97 4756.69 4754.07 4698.97 176.28 260.00 297.25 4752.00 4758.00 4755.96 203.03 4730.50 search defined by: XL,XR,R 4698.97 XR: 274.00 YR: 5096.56 Radius: R: Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL XR R 10.00 10.00 350.00 20 20 50 285.75 4761.02 235.88 4754.54 319.91 4698.95 190.05 274.00 319.91 4756.72 4757.98 4757.00 206.03 4731.50 4757.98 400.00 291.85 202.90 280.30 319.91 RESULTS: Analysis 1 - SS -7S - Reclamation Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.748 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.93 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 21.14 4700.29 269.00 4757.99 54.83 5116.78 417.86 1.935 <-- Critical Surface 2 21.66 4700.46 269.00 4757.99 56.85 5109.67 410.71 1.935 3 22.19 4700.64 269.00 4757.99 58.87 5102.54 403.57 1.935 4 20.08 4699.94 269.00 4757.99 49.08 5138.26 439.29 1.939 5 20.61 4700.11 269.00 4757.99 51.11 5131.18 432.14 1.939 6 21.14 4700.29 269.00 4757.99 53.13 5124.08 425.00 1.940 7 21.66 4700.46 269.00 4757.99 55.15 5116.97 417.86 1.940 8 22.19 4700.64 269.00 4757.99 57.17 5109.86 410.71 1.940 9 20.61 4700.11 269.53 4757.99 51.58 5131.14 432.14 1.941 10 21.14 4700.29 269.53 4757.99 53.60 5124.04 425.00 1.941 11 21.66 4700.46 269.53 4757.99 55.61 5116.94 417.86 1.942 12 22.19 4700.64 269.53 4757.99 57.63 5109.82 410.71 1.942 13 20.61 4700.11 270.05 4757.99 52.05 5131.11 432.14 1.943 14 21.14 4700.29 270.05 4757.99 54.06 5124.01 425.00 1.943 15 21.66 4700.46 270.05 4757.99 56.08 5116.90 417.86 1.943 16 22.19 4700.64 270.05 4757.99 58.09 5109.78 410.71 1.943 17 19.56 4699.76 269.00 4757.99 45.37 5152.60 453.57 1.944 18 20.08 4699.94 269.00 4757.99 47.39 5145.53 446.43 1.944 19 20.61 4700.11 269.00 4757.99 49.41 5138.45 439.29 1.944 20 21.14 4700.29 270.58 4757.98 54.53 5123.97 425.00 1.945 21 21.14 4700.29 269.00 4757.99 51.43 5131.37 432.14 1.945 22 21.66 4700.46 270.58 4757.98 56.54 5116.86 417.86 1.945 23 21.66 4700.46 269.00 4757.99 53.45 5124.27 425.00 1.945 24 22.19 4700.64 270.58 4757.98 58.55 5109.74 410.71 1.945 25 19.56 4699.76 269.53 4757.99 45.85 5152.57 453.57 1.945 26 22.19 4700.64 269.00 4757.99 55.47 5117.17 417.86 1.945 27 20.08 4699.94 269.53 4757.99 47.87 5145.50 446.43 1.946 28 20.61 4700.11 269.53 4757.99 49.88 5138.42 439.29 1.946 29 21.14 4700.29 271.11 4757.98 54.99 5123.94 425.00 1.946 30 21.14 4700.29 269.53 4757.99 51.90 5131.33 432.14 1.946 31 21.66 4700.46 271.11 4757.98 57.00 5116.82 417.86 1.947 32 21.66 4700.46 269.53 4757.99 53.92 5124.24 425.00 1.947 33 19.56 4699.76 270.05 4757.99 46.33 5152.54 453.57 1.947 34 22.19 4700.64 269.53 4757.99 55.94 5117.13 417.86 1.947 35 22.19 4700.64 271.11 4757.98 59.01 5109.70 410.71 1.947 36 20.08 4699.94 270.05 4757.99 48.34 5145.47 446.43 1.947 37 18.51 4699.41 269.00 4757.99 39.63 5173.94 475.00 1.947 38 20.61 4700.11 270.05 4757.99 50.36 5138.39 439.29 1.948 39 19.03 4699.58 269.00 4757.99 41.66 5166.89 467.86 1.948 40 21.14 4700.29 270.05 4757.99 52.37 5131.30 432.14 1.948 41 19.56 4699.76 269.00 4757.99 43.68 5159.84 460.71 1.948 42 21.66 4700.46 270.05 4757.99 54.39 5124.20 425.00 1.948 43 22.19 4700.64 270.05 4757.99 56.40 5117.09 417.86 1.949 44 20.08 4699.94 270.58 4757.98 48.82 5145.44 446.43 1.949 45 20.08 4699.94 269.00 4757.99 45.70 5152.78 453.57 1.949 46 20.61 4700.11 270.58 4757.98 50.83 5138.36 439.29 1.949 47 19.03 4699.58 269.53 4757.99 42.14 5166.87 467.86 1.949 48 20.61 4700.11 269.00 4757.99 47.72 5145.72 446.43 1.950 49 21.14 4700.29 270.58 4757.98 52.84 5131.26 432.14 1.950 50 19.56 4699.76 269.53 4757.99 44.16 5159.82 460.71 1.950 51 21.14 4700.29 269.00 4757.99 49.74 5138.64 439.29 1.950 52 21.66 4700.46 270.58 4757.98 54.85 5124.16 425.00 1.950 53 21.66 4700.46 269.00 4757.99 51.76 5131.56 432.14 1.950 54 22.19 4700.64 270.58 4757.98 56.86 5117.05 417.86 1.950 55 20.08 4699.94 271.11 4757.98 49.29 5145.41 446.43 1.950 56 22.19 4700.64 269.00 4757.99 53.78 5124.46 425.00 1.950 57 20.08 4699.94 269.53 4757.99 46.18 5152.76 453.57 1.951 58 19.03 4699.58 270.05 4757.99 42.62 5166.85 467.86 1.951 59 20.61 4700.11 271.11 4757.98 51.30 5138.32 439.29 1.951 60 20.61 4700.11 269.53 4757.99 48.20 5145.69 446.43 1.951 61 21.14 4700.29 271.11 4757.98 53.31 5131.23 432.14 1.951 62 21.14 4700.29 269.53 4757.99 50.21 5138.61 439.29 1.951 63 21.66 4700.46 271.11 4757.98 55.32 5124.13 425.00 1.952 64 19.56 4699.76 270.05 4757.99 44.64 5159.79 460.71 1.952 65 21.66 4700.46 269.53 4757.99 52.23 5131.52 432.14 1.952 66 22.19 4700.64 271.11 4757.98 57.33 5117.01 417.86 1.952 67 22.19 4700.64 269.53 4757.99 54.24 5124.43 425.00 1.952 68 18.51 4699.41 269.00 4757.99 37.94 5181.16 482.14 1.952 69 20.08 4699.94 270.05 4757.99 46.66 5152.73 453.57 1.952 70 20.61 4700.11 271.63 4757.98 51.77 5138.29 439.29 1.953 71 20.61 4700.11 270.05 4757.99 48.67 5145.66 446.43 1.953 72 19.03 4699.58 269.00 4757.99 39.97 5174.12 475.00 1.953 73 19.03 4699.58 270.58 4757.98 43.11 5166.82 467.86 1.953 74 21.14 4700.29 271.63 4757.98 53.78 5131.19 432.14 1.953 75 21.14 4700.29 270.05 4757.99 50.68 5138.58 439.29 1.953 76 19.56 4699.76 270.58 4757.98 45.12 5159.76 460.71 1.953 77 19.56 4699.76 269.00 4757.99 41.99 5167.08 467.86 1.953 78 21.66 4700.46 271.63 4757.98 55.78 5124.09 425.00 1.953 79 21.66 4700.46 270.05 4757.99 52.70 5131.49 432.14 1.953 80 18.51 4699.41 269.53 4757.99 38.44 5181.14 482.14 1.954 81 22.19 4700.64 270.05 4757.99 54.71 5124.39 425.00 1.954 82 20.08 4699.94 269.00 4757.99 44.01 5160.03 460.71 1.954 83 22.19 4700.64 271.63 4757.98 57.79 5116.98 417.86 1.954 84 20.08 4699.94 270.58 4757.98 47.13 5152.70 453.57 1.954 85 20.61 4700.11 269.00 4757.99 46.03 5152.97 453.57 1.954 86 20.61 4700.11 272.16 4757.98 52.24 5138.26 439.29 1.954 87 20.61 4700.11 270.58 4757.98 49.15 5145.63 446.43 1.954 88 19.03 4699.58 269.53 4757.99 40.46 5174.10 475.00 1.954 89 21.14 4700.29 272.16 4757.98 54.24 5131.16 432.14 1.955 90 21.14 4700.29 270.58 4757.98 51.16 5138.54 439.29 1.955 91 19.56 4699.76 269.53 4757.99 42.47 5167.06 467.86 1.955 92 19.56 4699.76 271.11 4757.98 45.60 5159.74 460.71 1.955 93 21.14 4700.29 269.00 4757.99 48.05 5145.90 446.43 1.955 94 21.66 4700.46 270.58 4757.98 53.17 5131.45 432.14 1.955 95 21.66 4700.46 272.16 4757.98 56.25 5124.05 425.00 1.955 96 18.51 4699.41 270.05 4757.99 38.92 5181.12 482.14 1.955 97 20.08 4699.94 269.53 4757.99 44.49 5160.00 460.71 1.955 98 21.66 4700.46 269.00 4757.99 50.07 5138.83 439.29 1.955 99 22.19 4700.64 270.58 4757.98 55.18 5124.35 425.00 1.955 Critical Failure Surface (circle 1) Intersects: XL: 21.14 YL: Centre: XC: 54.83 YC: Generated failure surface: (20 points) 21.14 4700.29 34.72 4699.44 89.11 4700.33 102.66 4708.32 156.18 4711.41 169.33 4728.01 4700.29 5116.78 4699.41 4701.67 4714.92 XR: 269.00 YR: 4757.99 Radius: R: 417.86 48.32 4698.98 61.93 4698.99 116.15 4703.45 129.58 4705.67 182.36 4718.86 195.25 4723.23 75.53 142.93 207.99 220.57 4757.99 4733.20 232.97 4738.80 245.19 4744.81 257.20 4751.20 269.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 45 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 21.14 1.51 -3.7 2.76 2.77 2 10.00 35.0 174.18 0.00 64.97 1.03 2 23.90 11.77 -3.7 5.41 5.42 2 10.00 35.0 1404.43 214.44 265.15 1.03 3 29.31 23.41 -3.7 5.41 5.42 2 10.00 35.0 2846.58 643.15 536.16 1.03 4 34.72 45.20 -1.8 6.80 6.80 2 10.00 35.0 5525.92 1366.97 819.77 1.01 5 41.52 62.09 -1.8 6.80 6.80 2 10.00 35.0 7608.61 1949.17 1128.56 1.01 6 48.32 78.27 0.0 6.80 6.80 2 10.00 35.0 9598.49 2484.09 1410.26 1.00 7 55.13 93.68 0.0 6.80 6.80 2 10.00 35.0 11487.33 2972.37 1687.77 1.00 8 61.93 108.26 1.9 6.80 6.80 2 10.00 35.0 13270.13 3413.42 1933.71 0.99 9 68.73 122.14 1.9 6.80 6.80 2 10.00 35.0 14960.72 3807.16 2180.00 0.99 10 75.53 135.03 3.8 6.79 6.80 2 10.00 35.0 16524.68 4153.35 2390.80 0.98 11 82.32 147.36 3.8 6.79 6.80 2 10.00 35.0 18014.48 4452.75 2606.12 0.98 12 89.11 158.49 5.6 6.77 6.80 2 10.00 35.0 19351.95 4704.06 2782.39 0.97 13 95.89 169.25 5.6 6.77 6.80 2 10.00 35.0 20637.31 4907.87 2966.68 0.97 14 102.66 178.56 7.5 6.75 6.80 2 10.00 35.0 21741.27 5064.00 3109.07 0.96 15 109.40 187.73 7.5 6.75 6.80 2 10.00 35.0 22821.82 5172.59 3262.74 0.96 16 116.15 195.19 9.4 6.71 6.80 2 10.00 35.0 23687.61 5233.40 3371.70 0.96 17 122.87 202.77 9.4 6.71 6.80 2 10.00 35.0 24563.12 5246.60 3494.93 0.96 18 129.58 208.34 11.2 6.67 6.80 2 10.00 35.0 25188.35 5212.01 3571.11 0.95 19 136.25 214.34 11.2 6.67 6.80 2 10.00 35.0 25858.92 5129.70 3664.03 0.95 20 142.93 218.03 13.1 6.63 6.80 2 10.00 35.0 26244.03 4999.79 3707.97 0.95 21 149.56 222.45 13.1 6.63 6.80 2 10.00 35.0 26710.37 4822.09 3770.84 0.95 22 156.18 224.25 15.0 6.57 6.80 2 10.00 35.0 26856.66 4596.82 3783.20 0.94 23 162.76 227.10 15.0 6.57 6.80 2 10.00 35.0 27121.15 4323.98 3816.34 0.94 24 169.33 242.30 16.8 6.95 7.26 2 10.00 35.0 28843.90 4258.34 3797.68 0.94 25 176.28 213.32 16.8 6.08 6.35 2 10.00 35.0 25214.29 3381.35 3790.25 0.94 26 182.36 271.05 18.7 7.69 8.12 2 10.00 35.0 31641.15 3790.29 3713.74 0.94 27 190.05 183.19 18.7 5.20 5.49 2 10.00 35.0 21130.01 2188.89 3662.72 0.94 28 195.25 268.28 20.6 7.65 8.17 2 10.00 35.0 30558.05 2634.40 3553.10 0.94 29 202.90 107.41 20.6 3.13 3.34 6 0.00 45.0 10875.10 895.48 2953.42 0.89 30 206.03 65.42 20.6 1.96 2.09 2 10.00 35.0 7371.54 504.23 3336.98 0.94 31 207.99 135.80 22.4 4.23 4.57 2 10.00 35.0 15212.32 747.16 3150.17 0.94 32 212.22 128.44 22.4 4.23 4.57 2 10.00 35.0 14254.67 249.02 2938.81 0.94 33 216.45 118.24 22.4 4.12 4.46 2 10.00 35.0 13039.67 0.00 2748.29 0.94 34 220.57 63.58 24.3 2.33 2.56 2 10.00 35.0 6996.01 0.00 2579.26 0.94 35 222.90 124.85 24.3 5.04 5.53 2 10.00 35.0 13740.26 0.00 2342.55 0.94 36 227.94 104.93 24.3 5.04 5.53 2 10.00 35.0 11576.42 0.00 1973.39 0.94 37 232.97 51.31 26.2 2.91 3.24 2 10.00 35.0 5674.88 0.00 1655.89 0.95 38 235.88 71.87 26.2 4.65 5.19 2 10.00 35.0 7928.56 0.00 1443.99 0.95 39 240.53 62.40 26.2 4.65 5.19 2 10.00 35.0 6822.08 0.00 1242.21 0.95 40 245.19 65.79 28.0 6.01 6.80 2 10.00 35.0 7082.93 0.00 986.37 0.95 41 251.20 48.54 28.0 6.01 6.80 2 10.00 35.0 5069.68 0.00 705.35 0.95 42 257.20 8.71 29.9 1.39 1.60 2 10.00 35.0 879.15 0.00 522.64 0.95 43 258.59 7.85 29.9 1.41 1.63 1 50.00 25.0 784.54 0.00 474.85 1.01 44 260.00 17.51 29.9 4.50 5.19 1 50.00 25.0 1750.72 0.00 328.65 1.01 45 264.50 5.84 29.9 4.50 5.19 1 50.00 25.0 583.61 0.00 100.85 1.01 X -S Area: 5601.83 Path Length: 258.59 X -S Weight: 659227.81 APPENDIX D IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis JT-S3 PROJECT NO: PROJECT NAME: DRAWN BY: DWG DATE: FIGURE 2 Site Plan and Boring Locations 23.3058 Meining Site Slurry Wall, Gilcrest MSR 01.16.24 CHECKED BY: REV. DATE: CMTLEGEND: JT B-# BORING NUMBER AND LOCATION • - - SITE BOUNDARY 500' 1000' 1" = APPROX. 500' CM17 r `' SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759.5 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/11/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/11/2023 _ lTn I i .J 1 V 1 Page 1 of 2 z 0 a z C 3 m SAMPLE O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg my q N JU O hU 3C, L a m _ _ - - - - — 5 - —10- —15- —20- —25- —30- —35- r SAND, clayey, with fine gravel, lean, slightly moist, dark brown, predominantly fine grained, SC. 4756 3.5- - - - - - - - — - — - — - - — - — - — - SAND, poorly graded, with fine gravel below 53', slightly moist to wet, light brown, SP. V# -.# 1 LEGEND AT # CAVE REFUSAL SE r.` C. , ..RVICES I C E S WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING " STANDARD PENETRATION TEST DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4759.5 ft. E. Castle 12/11/2023 12/11/2023 _ lTn I i .J 1 V 1 Page 2 of 2 .ii 0 a z U 3 m SAMPLE O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) Mg. my q N J U O N L 3C, L a m —45- —50- —55- —60— •• •••• =i••r• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• 4699.5 60 — - — - — - SANDSTONE, silty, hard, slightly moist, gray. 4694.1 65.4— — - — - — - — - - - - - - - 65 50/5 �50/5 Boring terminated at 65.4 feet V# -.# 1 LEGEND AT # CAVE REFUSAL S ..ti-',. rs. _ .e v E ^R V I C. , C E S WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING " STANDARD PENETRATION TEST DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/4/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/4/2023 _ lTn 2 .J 1 V Page 1 of 2 F x u a �VG Q� Nd'. Qw z a t P„ 8 NuF�i d' <O z v o y LL �' C ate°' HF Z u W 20F Eel; m 0' E; -. o\ wa m,. z C 3 JO m SAMPLE t.9 U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) 2g. mm v8 46 NL 3 n D .W�. e: a J s' m - 5 _ - -_ -10- -15- -20- - - -25- -30- -35- - - CLAY, sandy, lean, moist, brown, CL. 4752 5 44749 SAND, clayey, moist, brown, SC. $- _ - • SAND, poorly graded, with 1" to 2" gravel, slightly moist to wet, SP. — - - - - - - - - - - - - - V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING SPLIT SPOON ROCK CORE rs. C. , cmT ��.','7_ a• T{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL „ ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/4/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/4/2023 _ lTn 2 .J 1 V Page 2 of 2 u x c �rG cg Q� GP Qw m e CC n o� se, NuF�i d' QO m 8 r, o y LL u � f; °� •°' �Nx HF Z u W 20F o 8 m °a t' o\ 8? a,, z 0 3 JO m SAMPLE o U = % � ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ cY m u va NL 3 n C .W�. e: c J 2 -45- -50- -55- - - 60 •..'.4699 58 - - - - - - x x x x x x ••••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• !!••4682 4697 SILSTONE, with fine sand, with clay, very hard, moist, gray. 60 _ - - - - - - - - 119.611.2 41 34-25-9 82,000 68/36 �50/10� _ - SANDSTONE, silty, hard, slightly weathered, occasional siltstone layers. Siltstone parting. - - - - - - - - - - -65 - - - - —70- - - - 97/100 75 - - _ - - - 82/100 —75 Boring terminated at 75 feet V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING SPLIT SPOON ROCK CORE N ors. C. , �„ _ ati{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL „ ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4755 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/3/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/3/2024 lTn _3 .J 1 V J Page 1 of 2 SAMPLE 2g. H C7 v; Ea u a c �o Q N W P z 18 o m LL a a � Z O U 3 m .�. c m O U ' 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _.0 O a�+ t 3 v C — CLAY, sandy, lean, very stiff to hard, slightly moist to moist, brown, mottled, low calcareous, CL. - - 35/12 N -_ - - -5- - - - 20/12 N _- -4749 6 _ - - - SAND, poorly graded, occasional gravel to 1", medium dense to very dense, slightly moist to wet, brown, SP. - - - -10- - - 32/12 N - - - 15 - - _ _ 4.3 5 NV -NV -NP 37/12 X — - -20- - - \ / 24/12 X -25- - - \ / 20/12 X • -30- - - \ / 48/12 X • -35- - - \ / 20/12 X LEGEND W WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING „ SPLIT SPOON -# DEPTH OF CAVE # DAYS AFTER DRILLINGCM T or. C. , 7��.•'...-,,s_; 1 DEPTH OF REFUSAL S E R V ICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 23.3058 4755 ft. J. Edwards 1/3/2024 1/3/2024 lTn _3 .J 1 V J Page 2 of 2 u a c x?....Z Q N W P z 18 o m a a O U 3 m SAMPLE C7 O U ' 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg ; m _.0 O a�+ t 3 v O .�. c 2 - - —45- —50- _ _ —55- - - - - - - —60- 50/6 X " .'4699.5 Cobbles from 47'. - - — - 40/12 \ / X 55.5— — - - - - - - - — - 66/12 \ / X 50/6 X x x x x x x x x x x x x x x x x x x 4694.6 SILTSTONE, sandy, very hard, very moist, brown to gray, well cemented from 57', calcareous. 60.4— 25/0 X50/5 Boring terminated at 60.4 feet V# -.# 1 LEGEND TIME OF DRILLING AFTER DRILLING DAYS AFTER DRILLING N or. C. , �� _ s ; SERVICES WATER LEVEL AT WATER LEVEL # DAYS DEPTH OF CAVE # DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER „ SPLIT SPOON PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4753 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/11/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/11/2023 _ lTn I/1 .J 1 V`7 Page 1 of 2 u 0 a z O 3 m SAMPLE O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg my q N JU O hU 3C, L a m _ _ - - - - — 5 - —10- —15- —20- —25- —30- —35- 044749.5 SAND, clayey, lean, slightly moist, dark brown to light brown, predominantly fine grained, SC. 3.5- - - - - - - - — - — - — - - — - — - — - SAND, poorly graded, with fine gravel, slightly moist to wet, light brown, SP. V# -.# 1 LEGEND AT # CAVE REFUSAL rs. C. , ��.','7_ a•ti{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING " STANDARD PENETRATION TEST DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4753 ft. E. Castle 12/11/2023 12/11/2023 _ lTn I/1 .J 1 V`7 Page 2 of 2 z 0 t z U 3 m SAMPLE O U B. w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) Mg. my q N JU O NL 3 C, . C m —45- —50- —55— �*• •••• :::: •••• •••• •••• •••• •••• •••• •••• •••• •••• ••••4692.6 4698 55 — - — - SANDSTONE, silty, hard, moist, gray, fine grained. 60.4— - - - - - - - - - - - - - - 60 50/6 ,50/5 Boring terminated at 60.4 feet V# -.# 1 LEGEND AT # CAVE REFUSAL S N o rs. E ^R V I C. , C E S WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING " STANDARD PENETRATION TEST DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4752 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/6/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/6/2023 _ lTn I C .J 1 V J Page 1 of 2 F x u a �VG Q� Nd'. Qw z a t N 8 NuF�i d' <O z v o y LL �' if', •`-'"; HF Z u W 20F Eel; m 0' E; -. o\ wa m,. z C 3 JO m SAMPLE t.9 U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) 2g. m m v8 46 NL 3 n D .W�. e: a J s' m _ _ - 5 - _ _ - - -10- -15- -20- -25- -30- -35- - CLAY, sandy, lean, slightly moist, brown, CL. 4748 4 4,og :•x•4745 • SAND, silty, slightly moist, brown, SM. 7 - - • •• SAND, poorly graded, with 1" gravel, larger gravel from 51', moist to wet, brown, SP. - - - - - - - - - - - - - - V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING SPLIT SPOON ROCK CORE rs. C. , ��.','7_ a• T{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL „ ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4752 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/6/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/6/2023 _ lTn I C .J 1 V J Page 2 of 2 u x c �rG cg Q� GP Qw m e CC 1-4c): o� se, NuF�i d' QO m 8 r, o y LL u � f; °� •°' �Nx HF q. u W 20F o 8 m °a t' o\ wa a,, z 0 3 JO m SAMPLE o U = % � ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ cY m u va NL 3 n C .W�. e: c J 2 -45- -50- - - ••• 4699 53 - - - - x x x x x x SILTSTONE, with fine sand, thin claystone partings, very hard. 4697 55 _ - - —55 - - - - - - - - 109.7 11.7 72 31-25-6 6,300 77/57 _ 50/6 x 4696 CLAYSTONE, very hard. 56 _ - ssss �� •••• •••• •••• •••• •••• •••• •••• •••• •• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• SANDSTONE, silty, hard to very hard, gray, fresh slightly weathered, thin to medium bedding, very tight to wide fractures. - - - - Claystone parting. 4682 70 _ _ - - - - - - - - _ - -60 - - -65- - - - - _ - 100/95 100/100 -70 Boring terminated at 70 feet V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING SPLIT SPOON ROCK CORE N ors. C. , �„ _ ati{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL „ ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4751 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/4/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/4/2024 _ lTn IG .J 1 V V Page 1 of 2 H SAMPLE C7 _ c ."Y. v� m �o 2 O -it, u a c Q W N P z 18 o m LL a a � O U 3 m .�. c 2 U B. w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) a�+ t 3 Cv — CLAY, sandy, lean, very stiff, moist, dark brown, CL. — 4749 2 24/12 N SAND, clayey, medium dense, moist, dark brown, predominantly fine grained, SC. _ - - 44747 4 SAND, poolry graded, with occasional gravel to 1", medium dense to very dense, moist to wet, _ - 5 - - - brown, SP. - - - - 10/12 N -10- - - \ / 24/12 X -15- V - \ / 23/12 X -20- - - \ / 31/12 X -25- - - \ / 53/12 X 30 - - _ _ 12.1 3 NV -NV -NP 50/5 X -35- - - \ / 40/12 X LEGEND y WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER �# WATER LEVEL # DAYS AFTER DRILLING „ SPLIT SPOON -.# DEPTH OF CAVE # DAYS AFTER DRILLING .^,'. ors. C. , a' ti{ 1 DEPTH OF REFUSAL S ERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 23.3058 4751 ft. J. Edwards 1/4/2024 1/4/2024 _ lTn IG .J 1 V V Page 2 of 2 u c zo Q N W P z 18 o m a a Z O U 3 m SAMPLE C7 O U ' 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ c i. ; m _.0 O ha 3 Cv .�. 2 —45— —50— _ _ —55— 18/12 \c X • •`4698 Gravel 2" to 3" at 46' to 53'. — — 52/12 \ / X 53 — — 46/12 \ / X �50/4� CLAYSTONE, very hard, moist, gray, slight to moderate oxidation. 55.7 ]5/g X4695.3 Boring terminated at 55.7 feet V# -.# 1 LEGEND TIME OF DRILLING AFTER DRILLING DAYS AFTER DRILLING N ors. C. , �� _ ati{ SERVICES WATER LEVEL AT WATER LEVEL # DAYS DEPTH OF CAVE # DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER „ SPLIT SPOON PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4751.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. ERC/JBE DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/7/2023 HAMMER SYSTEM 140 lb Hammer, Rope & Cathead DATE COMPLETED 12/7/2023 _ lTn 7 .J 1 V Page 1 of 2 .ii x u a �rG Q. Nd'. Qw z° t N o: gLT, d' <O z v o y LL . .' °,° HF 8, u W 20F Eel; m °a ., t,\ wa m,. z C 3 JO m SAMPLE o U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 2g. ,. m va 46 NL 3 n D L>�. e: ° J s' m _ _ - - - 5 - -10- -15- - - -20- -25- -30- -35- X x44749.5 SAND, clayey, lean, slightly moist, dark brown, SC. 2 SAND, poorly graded, slightly moist to wet, light brown to yellow brown, medium to coarse grained, SP. — _ - - - - - - - - - - - - - - - - - V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING STANDARD ROCK CORE PENETRATION TEST '.,.'7:._. C. , 4. .� 'C WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL " ' N o rs. •_• .. 1. : SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4751.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. ERC/JBE DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/7/2023 HAMMER SYSTEM 140 lb Hammer, Rope & Cathead DATE COMPLETED 12/7/2023 _ lTn 7 .J 1 V Page 2 of 2 u x c �rG Q� g., Qw m° CC in o� NuF�i d' QO m 8 o y LL u � C` °� •° HF q. u W 20F o 8 m °a t' o\ wa a,, z 0 3 JO m SAMPLE o U = % � ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ cY m u va 4,3 NL 3 n C .W�. e: ° J 2 -45- -50- -55 T — — .• 4697 54.5- - - - - - — - - - — - CLAYSTONE, gravelly near contact, hard, slightly to very weathered, thin to medium bedded, tighlty jointed. 63 - -130.5 3.9 65 40-24-16 160,000 55/38 50/7 -60 - - - - —65- - - - - - - - - 75/53 X4688.5 sss• •••• •SANDSTONE, •••• •••• •••• •••• •••• •••• •••• •••• •••• �� •••• •••• •••• •••• ••••4681.5 •••• fine, moderately hard, slightly weathered, thin to medium bedding planes, very tightly joining. - - — - - - - - - - - - 80/57 Claystone parting at 67-1/2 feet. 70 —70 Boring terminated at 70 feet V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING STANDARD PENETRATION TEST ROCK CORE N ors. C. , CM T �� _ ati{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL " ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4753.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/4/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/4/2024 _ lTn I O .J 1 VO Page 1 of 2 SAMPLE ,..F::: C7 ; m u a c zo Q N W P z 18 o m LL a a � Z O U 3 m .>. c 2 O U ' it ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _,U O a�+ t 3A, - CLAY, sandy, lean, occasional fine gravel, lean, stiff, moist, gray to brown, low calcareous, CL. 14/12 N -4751 2.5- - SAND, poorly graded, occasional 1" gravel, medium dense to very dense, moist to wet, brown, SP. - - - - - 5 - - - - - - - 14/12 N -10- _ _ • - - _ _ 28/12 \ / X• -15- •- \ / _ _ 27/12 X• _ _ -20- - - 15/12 \ / X• _ _ _ _ -25- • - - 10/12 \ / X• _ _ _ _ -30- • - - \ / _ _ 16/12 X _ _ -35- - - \ / _ _ 40/12 X _ _ LEGEND W WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING „ SPLIT SPOON -.# DEPTH OF CAVE # DAYS AFTER DRILLING a•� Ace C. , N ors. ^,. 1.: 1 DEPTH OF REFUSAL SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4753.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/4/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/4/2024 _ lTn I O .J 1 VO Page 2 of 2 u a c �le.2 Q W g P z 18 6. m a a O U 3 m SAMPLE C7 O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ c g,, �v� m U O a�+ t 3 Cv .�. 2 —45— —50 — 55 54/12 \c X ,•4699.5 — — 54/12 \ / X 2" to 3" Gravel from 47' to 56.5'. 54 � 50/5 SAND, clayey, with gravel, dense, wet, brown, SC. 4697 56.5— _ — — — - - - — - — - - - - - —60— 14.7 22 29-19-10 40/12 x x x x x x x x x x x x x x SILTSTONE, very hard, moist, gray, moderate to severe oxidation. 4693.2 60.3— �50/4� 50/4 Boring terminated at 60.3 feet y �# -.# 1 LEGEND TIME OF DRILLING AFTER DRILLING DAYS AFTER DRILLING . C. , ati{ WATER LEVEL AT WATER LEVEL # DAYS DEPTH OF CAVE # DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER „ SPLIT SPOON N ors CM T �� _ S ERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4755 ft. E. Castle 12/11/2023 12/11/2023 lTn _9 .J 1 V 7 Page 1 of 2 u 0 a z O 3 m SAMPLE O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg my q N JU O hU 3C, L a m _ _ _ - - - 5 - -10- -15- -20- -25- -30- -35- r SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. 4752.5 2.5- - - — - - - - - - - - - - - - - - - SAND, poolry-graded, with fine gravel, slightly moist to wet, light brown, SP. V# -.# 1 LEGEND AT # CAVE REFUSAL rs. C. , ��.','7_ a•ti{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING " STANDARD PENETRATION TEST DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4755 ft. E. Castle 12/11/2023 12/11/2023 lTn _9 .J 1 V 7 Page 2 of 2 z 0 a z U 3 m SAMPLE O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Mg. my q N JU O NL 3C, L a to —45- —50- —55- •,•4696 •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• ••••4690.6 59 — - — - — - —60- - - - - - - �50/4� SANDSTONE, silt very hard, moist, gray, fine rained. Y, rY 9 Y, 9 64.4- — - - - - - - - - ,50/5 Boring terminated at 64.4 feet V# -.# 1 LEGEND AT # CAVE REFUSAL S N o rs. E ^R V I C. , C E S WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING " STANDARD PENETRATION TEST DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/5/2024 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/5/2024 _ lTn I i1 O .J 1 V Page 1 of 2 F,..., u a �rG Q� Qw z° t E o: NuF�i <O z v o LL �' C °� ° 4 20F Eel; m °a t: wa m,. z C JO m SAMPLE o U g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ 2g. mm va 46 NL D e: ° s' m _ _ — 5 — _ _ —10— —15— —20— —25— —30— —35— — CLAY, sandy, lean, moist, brown, CL. -4752.5 4 '•;,• , : SAND, silty, moist, brown, SM. •L• 4750.5 6 _ — — SAND, poorly graded, with gravel to 2", moist to wet, SP. — — — — — — — — — — — — V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING SPLIT SPOON ROCK CORE '.,.'7:._. C. , .� 'C WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL „ ' ..,'.7' rs. . 1. : SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/5/2024 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/5/2024 _ lTn I i1 O .J 1 V Page 2 of 2 u x c �rG cg Q� g., Qw m e et I:: o� s:, NuF�i d' QO m 8 r, o y LL u � f; °� •°' �Nx HF q".2 20F o 8 m °a t' o\ wa a,, z 0 3 JO m SAMPLE o U = u , ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ cY m u Ed NL 3 n C .W�. e: c J 2 —45— —50- -55- - - ',4699.5 — — Cobbles from 47' to 57'. 57 - - - - CLAYSTONE, with sand, hard to very hard, thinly bedded, slightly to moderately weathered, low fracturing, moist, gray. 70 - - - - - - - - - - - - -60- - -121.7 803 81 42-19-23 70,450 83/58 50/6 x -65- - - -70-•4686.5 - - - - - - 97/77 90/77 •••• •SANDSTONE, •••• •••• •••• •••• •••• •••• •••• ••••4682.5 with fine gravel, hard to very hard, thinly bedded, slightly to moderately weathered, tight fracturing, occasional layer of claystone interbedded, gray. 74 - - - - - - - Boring terminated at 74 feet V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING SPLIT SPOON ROCK CORE N ors. C. , CM T _ .e ti{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL „ ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/5/2024 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 1/5/2024 _ lTn I i i .J 1 V 1 1 Page 1 of 2 a c 0q IZz i s � H o: : Fe W IZz i u e V LL a a z z O U p m SAMPLE o v . c7 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) c_ Y. m v; Jv dt 3p .�. a m -5- SAND, clayey, lean, loose, moist, dark brown to light brown, low calcareous, slight oxidation, SC. 4754.5 3 - - 9/12 N SAND, poolry graded, occasional fine gravel, medium dense to very dense, moist to dark brown to light brown, SP. wet, - - - - - - - - 13/12 N 106.7 1.7 2 NV -NV -NP 26/12 I -10 - - -15- - - -20- 26/12 N - - - - - - - - - - - 34/12 25 128 7.6 4 NV -NV -NP 15/12 I -30- - - -35- IHI 50/8 50/7 _ 18. 13 4 NV -NV NP 50/5 y �# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING C. , a'ti{ WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER N ors. cm�� ..,,_ S ERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/5/2024 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 1/5/2024 _ lTn I i i .J 1 V 1 1 Page 2 of 2 a c qtr, C� �z It t H o� F: W �z 18 6 V LL k..' a � z O U p m SAMPLE o U B c7 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg m Jv Ed lit, 3p .�. c m -45- -50- -55- r ` '.4699.5 58 - - - - - - 50/5__11 �50/3„....-'. 5C.0IHI �50/41 CLAYSTONE, very hard, moist, blue -gray, slight to moderate oxidation. 4697.2 60.3— — —60 04. 0. 85 39 17 2 50/4 Boring terminated at 60.3 feet y �# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING a' ti{. C. , WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER ,^,'' ors S ERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4762 ft. J. Edwards 12/13/2023 12/13/2023 lTC i _ .J 1 J 1 Page 1 of 2 z SAMPLE O cg my q N JU F O U U O dL 0 C 3 m C m B. w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 3" C - CLAY, sandy, lean, moist, brown, CL. _ 4760 2 _ _ 7 SAND, clayey, with fine gravel, moist, brown, SC. _ i� I0D 4758.5 3.5- - - - SAND, poorly graded, with gravel to 2", moist to wet, brawn, SP. - - - 5 - - - -10- - - -15- - - - - — - -20- - - -25- - - -30- - - -35- - - LEGEND WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING -.# DEPTH OF CAVE # DAYS AFTER DRILLING a C. , .� 'C N ors. •_ _• ^.. 1. : 1 DEPTH OF REFUSAL SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4762 ft. J. Edwards 12/13/2023 12/13/2023 lTC i _ .J 1 J 1 Page 2 of 2 F 0 C z U 3 m SAMPLE O U ' , ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) Mg. my q N JU O NL 3" C . Cg —45— —50— —55— —60— ...... 4702 60 — — — — — — CLAYSTONE, very hard, moist, gray. 4696.7 65.3— - - — 6-75/4J1 _ 50/6 IH Boring terminated at 65.3 feet V# -.# 1 LEGEND AT # CAVE REFUSAL SE N ors. C. , ..RVICES I C E S WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4761 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/13/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/13/2023 _ lTC2 .J 1 J Page 1 of 2 SAMPLE _ c ."Y. my 2 C7 O N q u o C o _ m LL a o = O U 3 m C2 v ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) -U O yr 3" O — CLAY, sandy, lean, medium stiff, moist, dark brown, CL. - - 9/12 — -4758.5 2.5- - - - N .•./ SAND, poorly graded, with clay, loose, moist, brown, fine to medium grained, SP -SC. - - 5 •, 4756 5 1 NV -NV -NP 11/12 SAND, poolry graded, with gravel to 2", medium dense to very dense, moist to wet, brown, SP. - -10- - - \ / 47/12 X -15- - - \ / 29/12 X - - /\ — - -20- - - \ / 49/12 X -25- - - \ / 35/12 X -30- - - \ / 52/12 X • -35- - - \ / 40/12 X LEGEND y WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER �# WATER LEVEL # DAYS AFTER DRILLING „ SPLIT SPOON -.# DEPTH OF CAVE # DAYS AFTER DRILLING .^,'. ors. C. , a' ti{ 1 DEPTH OF REFUSAL S ERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4761 ft. J. Edwards 12/13/2023 12/13/2023 _ lTC2 .J 1 J Page 2 of 2 F o t o_ m LL a o 2 = O U 3 m SAMPLE C7 O v ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) Mg. my q N U _, O yr 3, O � 2 -45- -50- -55- -60- - - - - 37/12 \C X ".'4701 �X 60 - - - - - - 45/12 \ / X 47/12 \ / X 21/12 \ / X X _ 50/6 X x x x x rrri■ SILTSTONE, with fine sand, very hard, very moist, brown. 4699 62 - - - CLAYSTONE, very hard, moist, gray. 4696.7 64.3- - ,,50/4 J� Boring terminated at 64.3 feet V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER . C. , .ti{ WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER „ SPLIT SPOON DRILLING ''jr..- ors ,,_ SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4750 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/20/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/20/2023 lTC? _ .J 1 JJ Page 1 of 2 F x u a art Q� Nd'. Qw z a t N 8: NuF�i d' <8 z v o y LL �' a.,.� HF Z u W 20F Eel; m aO' t' o\ wa m,. 2 C 3 JO m SAMPLE t.9 U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg m m vV 46 NL 3 n D .W�. e: a J t m _ _ - - - - — 5 - —10- —15- - - —20- —25- —30- —35- rgrained, /4746 SAND, clayey, lean, slightly moist, dark brown, predominantly fine SC. 4 - - - - - - SAND, poorly graded, with occasional fine gravel, slightly moist to wet, light brown, SP. _ — - — - — - - — - — - — - — - V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING MODIFIED CALIFORNIA SAMPLER ROCK CORE rs. C. , ��.'F'.,_ aT• { SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4750 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/20/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/20/2023 lTC? _ .J 1 JJ Page 2 of 2 V. x c �rG agy N~ d' Qw z o in o� le. 5 iii d' QO z o ,_, o y LL i �' C` El Lj °5 wNx H F Z. W 20F o,3 m i t' t,\ .. m,. z 8 3 JO m SAMPLE o U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ cgte m u v� N L 3 n D ≥ e: a J n m -45- -50- -55- -60- - - `4688.5 61.5- - - - - - - - - - — — - - - - - - - — - - - CLAYSTONE, very hard, very moist, gray. 79 50/6 -65- -120.1 13.6 88 40-21-19 107,060 93/92 -70- - - —75- - - 95/80 95/95 X4671 Boring terminated at 79 feet y �# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING MODIFIED CALIFORNIA SAMPLER ROCK CORE S :f-', rs. _ .e v E ^R V I C. , C E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/13/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/13/2023 lT S _ .J 1 J`7 Page 1 of 2 a c qtr, C� Ez i s CC � 8 x...... W Pz 18 e V LL a a z O U p m SAMPLE o v c7 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg v; Jv t . 3p .>. c 2 _ _ — 5 _ —10— —15— —20— —25— —30— —35— — CLAY, sandy, lean, moist, brown, CL. 4757 2 • �•.•.• SAND, poorly graded, with gravel, moist, brown, SP. 4754 5 _ SAND, clayey, with gravel to 1", moist, brown, SC. 4749 10 — SAND, poorly graded, with gravel to 2", moist to wet, brown, SP. — — — — — — — — — — V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLINGcm N ors. C. , ..RVICES I C E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER T SE PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4759 ft. J. Edwards 12/13/2023 12/13/2023 lT S _ .J 1 J`7 Page 2 of 2 a c q V .,E,.. az i s 6z e... W az i v e V LL a a = O U p m SAMPLE o v 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg m v; Ed dt 3p .�. c 2 -45- -50— —55— 60 t;t;t;4700 - - — — With coarse gravel 51' to 59'. 59 — — CLAYSTONE, very hard, moist, gray. 4694.7 64.3— — 1_10.117.2 94 44-17-27 50/6 Z \50/3 Boring terminated at 64.3 feet y �# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING S .^,'' ors. C. , a' ti{ E ^R V I C E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/12/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/12/2023 lTCC _ .J 1 JJ Page 1 of 2 u 0 C a 0 z C U 3 m SAMPLE O U B. 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg my q N a JO dL 3" C C 2 - - - - - - - -10- - - -15- - - -20- - - -25- -30- -35- - CLAY, lean, with sand, medium stiff, moist, dark brown, CL. 3.5- - - - - - -_ _ - - - - - - - - - - - - - - - - - - - 8/12 N ,.-4753.5 ;�'r � ii. ,,. SAND, clayey, loose, moist, dark brown, fine to medium grained, SC. 4748.5 8.5- 9 2 � SAND, poorly graded, moist, medium to very dense, slightly moist to wet, fine to medium grained, light brown to light yellowish brown, SP. 31/12 N 35/12 N 20/12 N 35/12 N 50/9 50/10 NV -NV -NP 50/9 V# -.# 1 LEGEND TIME OF DAYS AFTER # DAYS AFTER . a' ti{ 1 I C. , C E S WATER LEVEL AT WATER LEVEL # DEPTH OF CAVE DEPTH OF REFUSAL DRILLING A MODIFIED CALIFORNIA SAMPLER DRILLING DRILLING .r., rs S E '^R PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/12/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/12/2023 lTCC _ .J 1 JJ Page 2 of 2 SAMPLE cg my q N u z C U O U JU O ha 0 C 0 3 m C2 B. w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) 3" C •• 4713 44 50/7 I ' SAND, clayey, very dense, wet, fine to coarse grained, SC. _ —45— — — 4709 48 SAND, poorly graded, with coarse gravel, dense, wet, fine to coarse grained, SP. 50/10 —50— — — 50/11 —55— — — LtLtLt 4698 59 X50/4} CLAYSTONE, very hard, wet, gray. —60— — — 4692.7 64.3— — �50/4Jd Boring terminated at 64.3 feet LEGEND WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING -.# DEPTH OF CAVE # DAYS AFTER DRILLING N ors. C. , �� _;. 1 DEPTH OF REFUSAL SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756 ft. DRILLING COMPANY/RIG Dakota Drilling/D-120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/18/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/18/2023 lTCG _ .J 1 JV Page 1 of 2 F x u a �VG ag Q� Nd'. Qw z a t N 8 se. NuF�i d' <O z v _ o y LL �' ate°' �Nx HF Z u W 20F Eel; m 0' E; -. o\ wa m,. z C 3 JO m SAMPLE t.9 U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) 2g. m m v8 46 NL 3 n D .W�. e: a J t m _ _ SAND, clayey, lean, slightly moist, dark brown, predominantly fine SC. - - rgrained, - - - - /4752 - - - - 4 SAND, poorly graded, slightly moist to wet, yellow brown to light brown, _ — 5 - SP. — - —10- — - —15- — - - - - —20- — - —25- — - —30- — - —35- — - LEGEND W WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER A V# WATER LEVEL # DAYS AFTER DRILLING ' ROCK CORE -.# DEPTH OF CAVE # DAYS AFTER DRILLING P` rs. C. , ..R 1 DEPTH OF REFUSAL SEVICES I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756 ft. DRILLING COMPANY/RIG Dakota Drilling/D-120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/18/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/18/2023 lTCG _ .J 1 JV Page 2 of 2 F c �rG Q� Qw m° ce n o� NuF�i QO m 8 o LL u � f; °� ° HF 20F o 8 m °a t' wa m,, z 0 JO m SAMPLE o U % ci ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) _ cY m u va 46 NL EL C e: ° 2 -45- -50- -55- - - •', 4699 57 - - - - - - x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x SILTSTONE, very hard, thinly to thickly bedded, slightly fractured to fresh, moderately to slightly weathered, moist, gray. 4682 74 _ - - - - - _ - - - - - _ - - - - - - - - — - - - - - - - -60- - -117.3 - - 13.6 86 36-25-11 48,150 37/33 \,50/2 - - - -65- - - - - - - - - -70- - - - - - - 93/87 92/73 Boring terminated at 74 feet V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING MODIFIED CALIFORNIA SAMPLER ROCK CORE N ors. C. , CM T _ .e ti{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/8/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/8/2023 _ lTC7 .J 1 J Page 1 of 2 z 0 a z C 3 m SAMPLE O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 2 ."Y. my q N JU O hU 3C, L a to _ _ - - - - — 5 - —10- —15- —20- —25- —30- —35- r /4752 SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. 4 - - - - SAND, poorly graded, occasional fine gravel, slightly moist to wet, light to yellow to orange brown, predominantly fine grained, SP. _ — - — - — - - — - — - — - V# -.# 1 LEGEND AT # CAVE REFUSAL ,. C. , WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING „ SPLIT SPOON DAYS AFTER DRILLING A MODIFIED CALIFORNIA SAMPLER # DAYS AFTER DRILLING ..r% i',--!? SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Rope & Cathead DATE COMPLETED 23.3058 4756 ft. E. Castle 12/8/2023 12/8/2023 _ lTC7 .J 1 J Page 2 of 2 .ii 0 t z U 3 m SAMPLE O `i'' ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) Mg. my q N JU O N L 3, C k C m -45- -50-••• -55- - - - - •, 4699 57 - - - - - - -mar •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• •••• ....4691 •••• SANDSTONE, silty, hard, moist, gray, fine grained. 65 - - - - _ _ - - - - -60- - - - - 50/8 X -65—,50/5 50/5 Boring terminated at 65 feet V# -.# 1 LEGEND AT # CAVE REFUSAL C. , V ti{ , WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING „ SPLIT SPOON DAYS AFTER DRILLING A MODIFIED CALIFORNIA SAMPLER # DAYS AFTER DRILLING :f-' rs. SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/12/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/12/2023 lTCO _ .J 1 JO Page 1 of 2 CCc � SAMPLE 2g. m v; qtr, C� o� F:4,3 z o Jv 'E. Pz W Pz e LT a a O U p .k. v B ad+ t 3p c It 18 � m c m w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) '' S,j� SAND, clayey, poorly graded, lean, loose to medium dense, slightly moist, brown to light brown, predominantly fine grained, SC. - 9/12 N ,f/-",), 4754 3 SAND, poorly graded, medium dense to dense, slightly moist to wet, yellowish tan to light - 13/12 N brown, fine grained, SP. - - -5- - - - - - - 17/12 N -10- - - - - 32/12 N -15- - - 20 116.1 9.9 2 NV -NV -NP 22/12 _ - - 33/12 N - - -25- - - -30- 36/12 _ - -35- _ _ 21/12 _ 30/12 LEGEND W WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING " STANDARD PENETRATION TEST -.# DEPTH OF CAVE # DAYS AFTER DRILLING .r., '^ a' ti{ C. , 1 DEPTH OF REFUSAL R S E 1 I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4757 ft. E. Castle 12/12/2023 12/12/2023 lTCO _ .J 1 JO Page 2 of 2 a c .e. V ...e., ,H i s � i7, o. F:. W Pz 18 e i a a � z O U p m SAMPLE o v 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg m vg Jv tt 3p .�. c 2 -45- - - -50- -55- —60- Z �;4698 59 _ _ - - - - _ _ 30/12• Z 83/12 48/12 X 50/8 CLAYSTONE, hard to very hard, moist, grey. 4692.7 64.3— - - — \50/3 Boring terminated at 64.3 feet V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING N or. C. , �� _ s ; SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER " STANDARD PENETRATION TEST PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/DEERE 85G CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/19/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/19/2023 lT S9 _ .J 1 J7 Page 1 of 2 F x u a art Q� Nd'. Qw z a N 8: NuF�i d' <8 z v o y LL �' a.,.� HF Z u W 20F Eel; m aO' t' o\ wa m,. 2 C 3 JO m SAMPLE t.9 U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 2 g A W vV 46 NL 3 n D .W�. e: a J t m _ _ - - - - — 5 - —10- —15- - - —20- —25- —30- —35- 0.i SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. 4753.5 4 - - - - - - • •• SAND, poolry graded, occasional gravel, slightly moist to wet, light brown, SP. _ — - — - — - - — - — - — - — - V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING MODIFIED CALIFORNIA SAMPLER ROCK CORE N ors. C. , �� _ a• T{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/DEERE 85G CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/19/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/19/2023 lT S9 _ .J 1 J7 Page 2 of 2 SAMPLE _ t x �rG -' Nd'. etc n o� 5 iii d' o y -, F, °� ° H F Z u W °a t' o.- z 3 o U .. ."Y. mu Ea 4,3 N L 3 n u c Qw z ° <O z v LL �' = ZOF o c, m wa m,, m >�. S ° J 2 u w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) D -45- - - -50— — — Gravel to 2". —55— — — ',4700.5 57 - - CLAYSTONE, thinly to thicklly bedded, slightly to moderately fractured, slightly weathered to fresh, very hard, moist, gray. - - �50/3 -60- - - - - 119 13.8 86 38-23-15 50,010 85/75 - - - - -65- 100/90 -70- — - - - - - 93/82 74 X4683.5 Boring terminated at 74 feet LEGEND W WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER A V# WATER LEVEL # DAYS AFTER DRILLING ' ROCK CORE -.# DEPTH OF CAVE # DAYS AFTER DRILLING N ors. C. , 1 DEPTH OF REFUSAL SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/14/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/14/2023 lTC i O .J 1 J 1_ Page 1 of 2 F 0 a z O 3 m SAMPLE O U ' w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) _ c ."Y, my q N JU O hU 3C, L a to _ _ - 5 - - -10- -15- - - -20- -25- -30- -35- X x44757 SAND, clayey, moist, dark brown, SC. 2 - - CLAY, sandy, lean, moist, dark brown, CL. 4753.5 5.5- _ - - - - - - - - - - - - - - - - SAND, poorly graded, with gravel to 1", slightly moist to wet, brown, SP. V# -.# 1 LEGEND AT # CAVE REFUSAL rs. C. , cm T ��.','7_ a•ti{ SERVICES WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4759 ft. J. Edwards 12/14/2023 12/14/2023 lTC i O .J 1 J 1_ Page 2 of 2 F 0 C z U 3 m SAMPLE O U ' , ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) Mg. my q N JU O NL 3" C . Cg —45— -50— —55— —60— • ..4699 With gravel to 3". — - 60 — — x x x x x x x x x x x x x x x x x x x x SILTSTONE, clayey, very hard, very moist, brown to gray. 4693.7 65.3— — - - - — - — — - - - - 65 �50/42l1 \75/3 Boring terminated at 65.3 feet V# -.# 1 LEGEND AT # CAVE REFUSAL N ors. C. , SERVICES WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER DAYS AFTER DRILLING # DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759.5 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/15/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/15/2023 lTC _ .J 1 J 1 1 Page 1 of 2 t � SAMPLE cg m v; a qtr, C� Ez 8 F:. W Pz e i a a z O w p .>. o v Jv t t 3p c z. 18 � m c 2 w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) SAND, poorly graded, with gravel from 24', very loose to very dense, slightly moist to wet, light brown, predominantly fine grained, SP. - - 6/12 N - - - - — 5 - 20/12 N — - - - - - 25/12 N —10- - - - - _ 27/12 N —15- — - - - - - 31/12 N —20- — - - - - - 39/12 N —25- — - 50/11 —30- — - - - - - 50/7 -35- _ — - - - N ...• - - 50/11 LEGEND W WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING " STANDARD PENETRATION TEST -.# DEPTH OF CAVE # DAYS AFTER DRILLING r.` C. , ..R 1 DEPTH OF REFUSAL SEVICES I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759.5 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/15/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/15/2023 lTC i i _ .J 1 J 1 1 Page 2 of 2 a c q Vo: C� <z i s t : F W az i v e V LL a a = z O U p m SAMPLE o U 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) cg m v; Ed t t 3p .�. c 2 -45- - - -50- ',4691.5 68 - - - - - - - - - - - - - - - - 50/8 32/12 N -55- - - -60- - - -65- -70- 118.6 7.8 2 NV -NV -NP 50/10 39/12 N 50/12 N Z CLAYSTONE, very hard, moist, yellowish tan to light brown to gray. 4685.3 74.2_ - - _ 50/3 X50/2 Boring terminated at 74.2 feet y �# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING S .^,'' ors. C. , a' ti{ E ^R V I C E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A MODIFIED CALIFORNIA SAMPLER " STANDARD PENETRATION TEST PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4760 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/21/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/21/2023 lTC i 2 _ .J 1 J 1 Page 1 of 2 F x u a �VG ag Q� Nd'. Qw z a t N 8 se, NuF�i d' <O z v _ o y LL �' ate°' �Nx HF Z u W 20F Eel; m 0' E; -. o\ wa m,. z C 3 JO m SAMPLE t.9 U = g w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) 2g. ,. m vs 46 NL 3 n D .W�. e: a J t m _ _ - - - - — 5 - —10- —15- - - —20- —25- —30- —35- rgrained, /4756 SAND, clayey, lean, slightly moist, dark brown, predominantly fine SC. 4 - - - - - - SAND, poorly graded, slightly moist to wet, light brown, SP. _ — - — - — - - — - — - — - — - V# -.# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING MODIFIED CALIFORNIA SAMPLER ROCK CORE NO RECOVERY _ .N . , - •ti{ ..., _ '1 SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL A ' O PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4760 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/21/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/21/2023 lTC i 2 _ .J 1 J 1 Page 2 of 2 CC in C` SAMPLE _ cY m u u x �rG cg Q� g., o� s:, NuF�i d' r, o y °� •°' �Nx HF q".2 °a t' o\ z 0 3 o U = va NL 3 n c Qw m e QO m 8 LL u � 20F E817, m 8? m,, JO m .W�. e: c J 2 u w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) C -45- - - -50-• •• - - -55- - - • -60- - - - - •• 4699 61 CLAYSTONE, silty, very hard, slightly weathered, moderately hard, thin to moderate bedding, very tight fracture spacing, moist, gray. - - �50/3711'1 65 — — - 13.7 67 37-24-13 60,400 97/92 -118.5 70 - - - - - - 87/77 - - -75- - - - 80/65 — 4680 80 LEGEND Boring terminated at 80 feet W WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER A V# WATER LEVEL # DAYS AFTER DRILLING ' ROCK CORE -.# DEPTH OF CAVE # DAYS AFTER DRILLING O NO RECOVERY _ 1 DEPTH OF REFUSAL CMI S E ^R VIC ES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4761 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/14/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/14/2023 lTC i ? _ .J 1 J 1 J Page 1 of 2 SAMPLE _ c ."Y. my 2 O N JU q F a C U U O dL 0 C 0 3 m C 2 ' 5 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) 3" C - CLAY, sandy, stiff, moist, brown to gray, CL. - - 12/12 N -_ - - — 5 — _ 4756 5 13/12 N SAND, poorly graded, with gravel to 1", medium to very dense, slightly moist to wet, brown, fine grained, - - - SP. - - -10- - - \ / 34/12 X -15- - \ / 22/12 X -20- - - \ / 30/12 X 25 - - _ _ NV -NV -NP 30/12 X -30- - - \ / 26/12 X -35- - - \ / 34/12 X LEGEND y WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER �# WATER LEVEL # DAYS AFTER DRILLING „ SPLIT SPOON -.# DEPTH OF CAVE # DAYS AFTER DRILLING N ^ors. C. , ,, _ a' ti{ 1 DEPTH OF REFUSAL S E R V I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4761 ft. J. Edwards 12/14/2023 12/14/2023 lTC i ? _ .J 1 J 1 J Page 2 of 2 SAMPLE 2g. my z O N q U JO F C U U ha 0 C 0 3 m 2 B. w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) 3" C 36/12 \C X —45— — — \ / 50/12 X —50— — — \ / 60/12 X —55— — — \ / 28/12 X �;4702 59 CLAYSTONE, very hard, very moist, brown. —60— — — .......50/5_,.. 4696.7 64.3— — �50/49P-d Boring terminated at 64.3 feet LEGEND W WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING „ SPLIT SPOON -.# DEPTH OF CAVE # DAYS AFTER N ors. C. , �� _ ati{ DRILLING 1 DEPTH OF REFUSAL SERVICES APPENDIX E IJsIT Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Peak Acceleration (%g) with 2% Probability of Exceedance in 50 Years USGS Map, Oct. 2002rev 125°W 120w 95°W 105°W _ 50°N 100°W 100°W 45°N 40°N 35°N 30°N 25°N 95°W 300 200 160 120 80 60 50 40 30 20 18 16 14 12 10 8 6 4 2 0 115°W 110°W 105°W ENVIRONMENTAL CONSULTANTS 2/36 Sound Science. Creative Solutions' To: 245 lnrerlocken Boulevard, Suite 300 Broomfield, Colorado 80021 Tel 303.487.1 183 .:Yrco.Ccm TECHNICAL MEMORANDUM J. C. York J -T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, Colorado 80621 From: Brady Nelson, SWCA Cultural Resources Specialist Melanie Medeiros, M.A., RPA, SWCA Cultural Resources Principal Investigator Date: January 23, 2024 Re: Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado / SWCA Project No. 84816 J -T Consulting, Inc. contracted SWCA Environmental Consultants (SWCA) to conduct a cultural resource review and reconnaissance survey to support the proposed Meining Property Gravel Mining Project (project). The project includes approximately 160 acres of agricultural land in the NE'/4 of Section 30 of Township (T) 4 North (N), Range (R) 66 West (W). The project consists of the new construction of a gravel mining pit on an approximately 160 -acre lot (Parcel No. 105730100039, 105730100042, and 105730100040, hereafter referred to as the project area), west of Gilcrest, Colorado, on agricultural, exempt, and residential land owned by the Central Colorado Water Conservancy District and Brent and Fawn Graybill (Figures 1 and 2). Development of the proposed gravel mining pit will be subject to permitting through both Weld County and the State of Colorado. The purpose of the review and reconaissance survey is to assess the project area for the presence of archaeologically and potentially sensitive cultural areas to assist J -T Consulting, Inc. and the project proponent in determining if any pre-existing cultural resource issues may impact the project and to support both county -level and state -level project permitting. This technical memorandum provides a description of the project area and land use, the methods used by SWCA cultural resources specialists to complete the review and reconnaissance survey, a summary of the results of the review and the reconnaissance survey, and recommendations as they relate to the proposed project. PROJECT AREA AND LAND USE The project area is approximately 1.75 miles west of Gilcrest, Weld County, Colorado, in the northeast quadrant of Section 30 of T4N, R66W as depicted on the 1970 U.S. Geological Survey (USGS) Milliken, Colorado, 7.5 -minute quadrangle (see Figures 1 and 2). The majority of the project area consists of a flat and roughly circular tilled and fallow agricultural field on the T3 terrace of the South Platte River (Figure 3), which is intersected by east -west and northeast -trending sections of the Western Mutual Ditch (Figure 4) and farmsteads in the northern and southeastern sections of the project area. Outside of the agricultural field, vegetation primarily consists of invasive and noxious weeds and short to medium grasses. Bare ground visibility ranges between 0 and 70 percent with an average of 25 percent. Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado tt, �Q1 a / / / ri.. f, r.,---•/.. /• ry " r r.. Well 7?' 4746 / / / J / t ' r i � , %; 1 - _ -- • -4;7- 19 �a CO .CO Ce CC Z Z uunalkilt e el • 30• 4762 _8• 4743 well 47 4755 4764. fl• `a 47w� w 29 v` Vie• • 476i .• L 'pq14765 �l e •.I i 4746 CWelt 4758 MEINING PR6PERTY GRAVEL MINING PROJECT Project Location - Topographic Map Project Area n Section Boundary Township/ Range Boundary Weld Caunly. CO USES Cduadrangle: Milliken. CO (1970] T4N R66W Section 19.30 MAO 1983 11T1•:1 Zone 13N 40.2878'N 104.8159 W .R /�RCRmERTn� (OMUl-AUT5 Figure 1. Project location. 2 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado MEINING PROPERTY GRAVEL MINING PROJECT Project Location - Aerial Map R•: Project Area I� Section Boundary Township/ CI Range Boundary 4Veld County. CO USES 7.:i Ouadrnnglc: fyTillikn. CO (1970) T4N R66W Section 19.30 NA❑ 1983 UTIM Zonr.• 13N 40.287 N 104.8164'W .Hliii0HmEHTAL. (ON5UFAUT5 Figure 2. Aerial view of project location. 3 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado One of highest terraces in the Platte River system was termed T3 by geomorphologists because it is the third terrace above the modern level of the river. This terrace is known as the Kersey Terrace on the south side of the river and as the Pleasant Valley Terrace on the north side. This terrace is notable for the high level of glacial gravels mixed with the alluvial sediments deposited during the Pleistocene Pinedale Monarch Glaciation, about 12,000 years before present (McFaul et al. 1994). According to Holliday (1987) and McFaul et al. (1994), among others, the surface of the T3 is characterized by gravel ridges and channels, a result of braided channels of the South Platte River as it deposited glacial outwash materials. Much of this landscape has been flattened by historic agricultural activities. Five soil map units are documented in the project area: Altvan loam, 0 to 1 percent slopes; Ascalon loam, 0 to 1 percent slopes; Julesburg sandy loam, 0 to 1 percent slopes; Olney fine sandy loam, 0 to 1 percent slopes; and Otero sandy loam, 0 to 1 percent slopes (Natural Resources Conservation Service [MRCS] 2023). Soils in the Project area are predominantly loam and sand of alluvial or eolian deposition that occur on either terraces or plains on 0 to 1 percent slopes; these soils are deep (60 to < 80 inches) and well drained. These soil units vary in their development with very weakly to very well -developed soils present and are derived from a variety of parent materials, including South Platte River alluvium, old alluvium, mixed deposit outwash, and wind -reworked alluvium and/or calcareous sandy eolian deposits. Ascalon loam, 0 to 1 percent slopes, which is concentrated in the western portion of the project area, contains an Ap horizon, indicating that this soil unit has been impacted by agriculture. Altvan loam, 0 to 1 percent slopes, are derived from old alluvium that likely predates human settlement in North America. These soils are in a small area along the west boundary of the project area. Figure 3. Overview of the project area from the northwest corner; view facing southeast. 4 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 4. East -west trending section of the Western Mutual Ditch; view facing east. METHODS In November 2023, SWCA requested a file search and literature review of the project area through the Colorado Office of Archaeology and Historic Preservation to identify records for all previously conducted cultural resource surveys and all previously identified cultural resources within the project area and the Public Land Survey System (PLSS) sections bordering the project area. In addition, SWCA conducted background research that included examination of historical topographic maps, aerial imagery, and geological and soils data for the project area to identify land use patterns and natural features that may signify areas with the potential for archaeological/cultural resources. Following completion of this background research, on November 15, 2023, SWCA archaeologists Stephanie Slaughter, Ross Campbell, and Brady Nelson completed a reconnaissance survey of the project area to identify cultural resources and potential impacts the project may have on those resources. RESULTS File Search and Literature Review Results of the file search and literature review indicate that seven cultural resource inventories have been previously conducted in PLSS sections within 1 mile of the project area (Table 1). Two previous inventories intersect the project area, MC.AE.R24 and WL.SC.NR2; the remaining inventories were conducted within 1 mile of the project area. Two of these inventories were conducted for pipeline projects, two were conducted for well pad projects, one was conducted for the Colorado Department of Transportation, and two were conducted for projects of miscellaneous type. 5 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Table 1. Previously Conducted Cultural Resource Inventories within the File Search Area OAHP ID Year Title Author(s) Contractor MC.AE.R24* 2009 Suncor Energy (U.S.A.) Pipeline Company Gantt, Erik, Stephen Centennial Archaeology, Rocky Mountain Crude System Expansion R. Anderson, and Inc. Pipeline Project: Class III Cultural Resource Kristin A. Gensmer Inventory Laramie County, Wyoming and Weld and Adams Counties, Colorado WL.SC.NR2* 2007 Weld Limited Results Cultural Resource Survey Rogers, Carolyn NRCS Report on Private Land WL.SC.NR3 2007 Weld County Limited Results Cultural Resource Survey Report on Private Lands Rogers, Carolyn NRCS WL.LM.R32 2015 PDC Energy Wiedeman Trust, Wiedeman F, Trust, Hunt, and Tarin Wells Pads, Weld County, Colorado: Results of an Intensive Cultural Resources Inventory (BLM# CR-RG- 15-71 P) Fariello, Juston URS Group, Inc. WL.CH.NR40 2006 An Intensive Archaeological Resource Inventory along US Highway 85 South of La Salle, Weld County, Colorado (STA 0853-057 US 85) Hand, O. D. Colorado Department of Transportation WL.E.R10 2002 Colorado Interstate Gas Company's Front Barclay, Dulaney Metcalf Archaeological Range Pipeline Intensive Inventory for Cultural and Michael D. Consultants Resources, Weld County, Colorado (Original Metcalf and Addendum) W L. LM. R92 2023 A Class III Cultural Resource Inventory for PDC DeSanto, Carly M. SWCA Energy's Bubba Federal APD Project, Weld County Colorado (BLM#: CR-RG-23-033 P) Note: Asterisk indicates project overlaps with current project area. As a result of these inventories, 16 cultural resources were previously recorded in the PLSS sections within 1 mile of the project area, including three precontact resources and 13 historic resources (Table 2). The three previously recorded precontact resources include one isolated find and two open camps, all of which are north of the South Platte River and to the northwest of the project area, approximately 1.5 miles away. Of these precontact resources, one of the open camps (5WL2610) needs more data for a National Register of Historic Places (NRHP) eligibility recommendation, and the second open camp and isolated find have been recommended not eligible for the NRHP. The 13 previously recorded historic resources include four ditch segments, two highway segments, two railroad segments, one artifact concentration, one bridge, one ditch, one road segment, and one isolated find (see Table 2). Previously recorded segments of the Union Pacific Railroad, Farmers Independent Ditch, and U.S. Highway 85 support the eligibility for each linear resource's overall eligibility, whereas the segments of State Highway 60 and the Meining Lateral or Wiedeman Well Feeder Ditch are non - supporting of each resource's overall eligibility. Ten of the remaining historic resources are recommended not eligible or is officially not eligible for the NRHP and one is recommended as needing more data before an eligibility assessment can be made. Only one resource, 5WL2750.4, a segment of the Western Mutual Ditch, intersects the project area. The segment has been recommended not eligible for the NRHP. Four of the previously recorded resources are in the immediate vicinity of the project area. These include 5WL5037.2, a segment of State Highway 60, and 5WL3052, Hewes Ditch Bridge — We1025.5-040.0A, which are directly adjacent to the project area on the southeast corner and the western edge of the project area, respectively, and 5WL7729.1, a segment of the Meining Lateral or Wiedeman Well Feeder Ditch, and 5LW5037.2, a segment of State Highway 60, which are near the southeast corner of the project area. 6 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Of note, the Kersey Terrace has also yielded several of the earliest sites in Weld County, including the Frazier Site (Agate Basin) (5WL268), Klein site (Clovis) (5WL1368), Jurgens Site (Cody complex) (5WL53), and Powars site (Folsom) (5WL1369), all of which are within 15 miles of the project area. Table 2. Previously Recorded Cultural Resources within the File Search Area Resource Resource Name Temporal Affiliation Resource Type NRHP Eligibility on Number Record 5WL1031.3 Denver, Laramie & Historic Northwestern Railroad Railroad segment Officially not eligible 5WL1969.86 Union Pacific Railroad (Denver Historic Pacific Railway and Telegraph Company) Railroad segment Supports eligibility of entire linear resource 5WL2589.5 Farmers Independent Ditch Historic Ditch segment Field not eligible 5WL2589.7 Farmers Independent Ditch Historic Ditch segment Supports eligibility of entire linear resource 5WL2609 Precontact Isolated find Field not eligible 5WL2610 Precontact: Early Ceramic, Plains Woodland Open camp Field needs data 5WL2750.4* Western Mutual Ditch Historic Ditch segment Field not eligible 5WL3052 Hewes Ditch Bridge — Historic We1025.5-040.0a Bridge Field not eligible 5W3177 Historic Isolated find Field not eligible 5WL3179 Precontact Open camp Field not eligible 5WL5037.2 State Highway 60 Historic Highway segment Does not support eligibility of entire linear resource 5WL6867.10 U.S. Highway 85 Historic Highway segment Supports eligibility of entire linear resource 5WL7729.1 Meining Lateral or Wiedeman Historic Well Feeder Ditch Ditch segment Does not support eligibility of entire linear resource 5WL7730 Salamanca Well Feeder Ditch Historic Ditch Field not eligible 5WL7731 Historic Artifact concentration Officially not eligible 5WL8120.5 Weld County Road 38 Historic Road segment Officially not eligible Note: Asterisked resource intersects the current project area. Historic Map and Aerial Images Review Additionally, SWCA reviewed historic maps for features that may be present within the project area (Table 3). Sources reviewed include General Land Office (GLO) plats through the Bureau of Land Management (BLM) website (BLM 2023), USGS quadrangles using the National Geologic Map Database (USGS 2023), and historic aerial imagery from NETROnline (2023). Available GLO plats that include the project area are listed in Table 3. The earliest available plat dates to 1863, and no features are visible in Section 30, T4N, R66W where the project area is located. The 1865 plat depicts an unimproved road oriented southwest -northeast that intersects the northeast quarter of Section 30 at the center of its southern and eastern edges. The 1869 plat does not provide details for 7 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Section 30, T4N, R66W and depicts no features, with the primary focus being the Denver Pacific Railway to the east of the project area. Historical USGS quadrangles available for the project area are listed in Table 3. The earliest available quadrangle is the 1902 Greeley, Colorado, 1:125,000 -scale quadrangle, which depicts an unnamed ditch intersecting the project area and improved roads to the west, north, and east of the project area, along with three structures outside the project area but within Section 30. Gilcrest had not yet been founded, but the Union Pacific, Denver and Cheyenne Line is depicted running through Platteville, Nantes, and La Salle to the east. The 1950 and 1951 Milliken, Colorado, 1:24,000 -scale quadrangles depict the Western Mutual Ditch intersecting the project area, along with improved roads to the west and north. State Highway 60 is depicted directly to the east of the project area, and structures and unimproved roads associated with a farmstead are shown in the southeast corner of the project area. A well is immediately to the south of the project area in the southwest corner of Section 30. The remaining Greeley, Colorado, 1:250,000 -scale quadrangles date to 1954, 1957, 1958, 1961, 1964, and 1965; all of these depict the Western Mutual Ditch within the project area, improved roads to the west and north of the project area, and State Highway 60 to the east of the project area, but the detail available at this scale does not provide any additional data regarding the presence of features or land use in or within the vicinity of the project area. Table 3. Historic Maps Reviewed Map Name Map Type/Preparer Date T4N, R66W GLO/original survey plat, exterior boundaries 1863 T4N, R66W GLO/original survey plat 1865 Map of the Denver Pacific Railway GLO/original survey plat 1869 Greeley, Colorado USGS 1:125,000 -scale quadrangle 1902 Milliken, Colorado USGS 1:24,000 -scale quadrangle 1950 Milliken, Colorado USGS 1:24,000 -scale quadrangle 1951 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1954 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1957 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1958 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1961 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1964 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1965 Historic imagery from NETROnline (2023) for the area dates to as early as 1948 and shows the farmstead in the southeast corner of the project area and the Western Mutual Ditch intersecting agricultural fields in the project area. Very few alterations in land use are noted until 1984, when the southeastern farmstead was reconfigured to a more rectangular shape. Images from 2004 to 2019 show oil and gas infrastructure on the western and northeastern edges of the project area; the northeastern pad and structures are not visible in imagery from 2021. The farmstead in the northern portion of the project area is first shown in imagery dating to 2017. General Area History Weld County was first established in 1861 under the Territory of Colorado (Weld County 2023a). A majority of the county was settled by people of German descent who migrated from Russia in the early 1900s. These immigrants largely first worked on the railroad and in the sugar beet fields. The sugar beet 8 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado industry began in 1902 with the establishment of sugar factories in Greeley and Eaton, and later in Windsor, Fort Lupton, and Johnstown. Weld County is currently the leading area for agricultural products in the state of Colorado and ninth in the United States. It is also the number -one -ranked county in the state of Colorado for cattle, grain, and sugar beet production (Weld County 2023a). The nearby town of Gilcrest, Colorado, was originally the town of Nantes, and was situated along the Union Pacific Railway from 1887 to 1907. In 1907, W.K. Gilcrest, a lumber tycoon from Iowa, became the main owner of property around Nantes and renamed the town in honor of his father, Jacob. K Gilcrest. The town of Gilcrest was incorporated in 1912 and has historically served as a hub for storage of sugar beets and potatoes harvested in the local area. More recently, oil and gas exploration and development within Weld County has become a large component of the economy of Gilcrest (Town of Gilcrest, Colorado 2023). Three parcels (Parcel No. 105730100039, 105730100042, and 105730100040) are within the project area. Parcel No. 105730100039 and 105730100042 are owned by the Central Colorado Water Conservancy District and are zoned agricultural and exempt, respectively. Parcel No. 105730100040 is owned by Brent and Fawn Graybill and is zoned as residential. RECONNAISSANCE SURVEY On November 15, 2023, SWCA completed a reconnaissance survey of the project area to identify cultural resources and potential impacts the project may have on those resources. As a result of this survey, two cultural resources were identified within the project area. The first consists of a segment of the Western Mutual Ditch (5WL2750) that fully incorporates and extends previously recorded segment 5WL2750.4. The second resource, 5WL9705, consists of a newly recorded historic farmstead. 5WL2750.4: Western Mutual Ditch SWCA revisited 5WL2750.4 during the reconnaissance survey on November 15, 2023. The portion of the ditch within the project area consists of an unlined single ditch channel with vertical banks measuring approximately 20 feet wide at the top, 18 feet wide at the bottom, and 5 feet deep. Several areas with erosion control rip -rap are present along the sides of the ditch channel (Figure 5). Both sides of the ditch are lined by a berm that measures approximately 1 feet tall and has been flattened on top as a vehicle access road. The ditch is crossed at regular intervals by metal bridges for the surrounding agricultural field's center pivot irrigation system. Five gate features were observed within the project area. Of the five features, four are currently active (F1, F2, F4, and F5), and F3 appears to be abandoned. The gates are metal and set into concrete collars that lead to field feeder ditches (Figures 6-9). 9 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 5. View along Western Mutual Ditch near CO Highway 60; view facing west. Figure 6. F1, water diversion gate; view facing north. 10 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 7. F2, water diversion gate; view facing north. Figure 8. F3, water diversion gate; view facing northwest. 11 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 9. F4 (left) and F5 (right), water diversion gates; view facing north. The Western Mutual Ditch (5WL2750), originally known as the Hewes Cook Ditch, was first appropriated on May 5, 1866, and was adjudicated on April 28, 1883. The ditch was originally constructed by John Hewes and Marshall Cook under water Priority 12 (Colorado's Decision Support Systems 2008). Construction of the original ditch began in 1866. The headgate diverted water from the east side of the South Platte River in Section 11, T3N, R67W. The first iteration of the canal was 2.5 miles long, 6 feet wide, and 20 inches deep. In 1900, The Greeley Tribune described the "Western Ditch" as "the successor to the old Hewes Cook Ditch" (Colorado Historic Newspapers 2024). The newspaper further stated that the ditch was capable of irrigating up to 10,000 acres of land, possessed "the best dam and headgate," and was the most well -constructed ditch between Evans and Denver (Colorado Historic Newspapers 2024). National Register of Historic Places Eligibility Recommendation The Western Mutual Ditch in its entirety was originally found to be not eligible for the NRHP in 1998 with reference to Holleran (2005); that evaluation was reiterated when segment 5WL2750.4 was recorded in 2007 and recommended not eligible (McElhoe et al. 2007; Spath and Corwin 1998). In 2011, SWCA recorded an additional segment of the ditch (5WL2750.6) and recommended the Western Mutual Ditch to be eligible for the NRHP under Criterion A for its role as a pioneer structure established by some of the original gold seekers in the region and its contribution to the development of the agricultural prominence of Weld County in the late eighteenth and nineteenth centuries (Wray et al. 2011). SWCA's recommendation received SHPO concurrence in August 2011. Additionally, during the initial 2007 recording of 5WL2750.4, the segment was recommended as non-contributing to the eligibility of the overall resource due to the significant modifications made to the segment. 5WL2750.4 is still in its original alignment and functions as a water conveyance system for agricultural purposes. Therefore, the segment retains integrity of location, design, and association. The segment has undergone substantial modification from the installation of steel bridges for the irrigation system and the 12 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado erosion control rip -rap. Thus, the segment does not retain integrity of materials, workmanship, setting, and feeling. SWCA recommends that 5WL2750.4 does not support the eligibility of the overall resource, because it lacks multiple aspects of integrity and is no longer reflective of the original construction. 5WL2750 was determined eligible for listing in the NRHP. SWCA did not record or observe anything to alter the eligibility of the resource as a whole. Segment 5WL2750.4 is recommended as not supporting the eligibility of the resource as a whole; therefore, the project will result in no adverse effect to a historic property. Segments that are non -supporting do not require mitigation, and no further work is recommended regarding cultural resources with respect to 5WL2750.4. 5WL9705: Historic Farmstead SWCA newly recorded 5WL9705, a historic farmstead, on November 15, 2023. The four historical buildings within the farmstead consist of a house constructed in 1915, one large and one small outbuilding constructed in 1940, and one outbuilding constructed in 1971 (Weld County 2023b). The 1915 house is a one-story building adjacent to State Highway 60 with a south -facing entrance, a hipped roof, and a basement, with a more recent addition on the west end of the building and a large brick chimney on the north wall of the addition (Figures 10-12). The large rectangular 1940 outbuilding is in the northwest portion of the farmstead area and appears to be a barn or machine shop (Figure 13). No entrances were visible during survey, although one is potentially situated on the western side of the building. The smaller 1940 outbuilding is to the southwest of the large 1940 outbuilding and is possibly a garage; several windows were visible during the reconnaissance survey, but no entrance was identified (Figure 14). The 1971 outbuilding is situated in the southwest corner of the farmstead area and appears to be a machine shed with an opening on the southern side of the building (Figure 15). Figure 10. 1915 house from the north; view facing south. 13 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 11. 1915 house from the northwest; view facing southeast. Figure 12. 1915 house from the southeast; view facing northwest. 14 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 14. Small 1940 outbuilding from the southeast; view facing northwest. Large 1940 outbuilding to the right. Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 15. 1971 outbuilding from the southwest; view facing east-northeast. National Register of Historic Places Eligibility Recommendation 5WL9705 is a newly recorded historic farmstead that falls within the scope of Weld County, Colorado Historic Agricultural Context (Mehls and Mehls 1988) and Colorado History: A Context for Historical Archaeology (Church et al. 2007). The site consists of three historic features built before 1956. A review of the BLM GLO land patents revealed that one patent was issued for the land containing the farmstead to John N. Hill in 1875 under the authority of the 1862 Homestead Act. No additional public information regarding John N. Hill is available. The farmstead is visible on the 1948 aerial that covers the area; however, it is not possible to clearly discern the individual buildings on the available imagery (NETROnline 2023). 5WL9705 is not associated with persons or events considered to have made a significant contribution to the broad patterns or local or regional history (NRHP Criteria A and B). The buildings are not representative of a style, nor do they have any distinctive engineering or architectural characteristics and do not meet Criterion C. Finally, the site not only lacks any historic artifacts, but the surface has also clearly been regularly graded and maintained, which has removed evidence of additional surface feature locations. Additionally, historic sites, such as 5WL9705, tend to be limited to surface and near -surface contexts, both of which are limited. Thus, the site does not have the potential to provide meaningful information about late nineteenth and early twentieth-century history in Weld County. The site is therefore recommended to be not significant under Criterion D. The site retains integrity of location, setting, materials, workmanship, and design. The farmstead and surrounding landscape have experienced periods of development and modernization. The site lacks integrity of feeling and association. As a result, 5WL9705 lacks integrity and does not meet any of the NRHP criteria. SWCA recommends the site to be not eligible for inclusion in the NRHP. 16 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado CONCLUSIONS AND RECOMMENDATIONS Given the level of modem agricultural use occurring on this parcel, confirmed by the reconnaissance survey and historical document review, it is unlikely that sediments that retain precontact or early historic archaeological sites remain in the project area. Therefore, no additional archaeological assessment is recommended within the agricultural field in the project area. The Western Mutual Ditch (5WL2750) has been determined eligible for listing in the NRHP. However, the segment within the project area (5WL2750.4) has been previously recommended as not supporting the eligibility of the overall resource. SWCA concurs with the previous recommendation and, as a result, the project will result in no adverse effect to the recorded segment of the Western Mutual Ditch. 5WL9705 is recommended not eligible for the NRHP; therefore, the project will result in no effect to a historic property. SWCA recommends no further work regarding cultural resources for the current project. 17 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado REFERENCES CITED Bureau of Land Management (BLM) 2023 General Land Office (GLO) records. Available at: https://glorecords.blm.gov/default.aspx. Accessed December 13, 2023. Church, Minette C., Steven G. Baker, Bonnie J. Clark, Richard F. Carrillo, Jonathan C. Horn, Carl D. Spath, David R. Guilfoyle, and E. Steve Cassells 2007 Colorado History: A Context for Historical Archaeology. Colorado Council of Professional Archaeologists, Denver. Colorado's Decision Support Systems 2008 Water Rights. Colorado Division of Water Resources and Colorado Water Conservation Board, Denver. Available at: https://cdss.colorado.gov/. Accessed January 2024. Colorado Historic Newspapers 2024 Exceptional Water Facilities. The Greeley Tribune: Thursday, April 19, 1900. Available at: https://www.coloradohistoricnewspapers.org/. Accessed January 2024. Holleran, Michael 2005 Historic Context for Irrigation and Water Supply Ditches and Canals in Colorado. Prepared by the Colorado Center for Preservation Research, University of Colorado at Denver, and Health Sciences Center. Holliday, Vance T. 1987 Geoarchaeology and Late Quaternary Geomorphology of the Middle South Platte River, Northeastern Colorado. Geoarchaeology: An International Journal 2(4):317-329. McElhoe, R., E. Gantt, and J. Hedlund 2007 5WL2750.4 Management Data Form. Suncor Energy (U.S.A) Pipeline Company Rocky Mountain Crude System Expansion Pipeline Project. Prepared by Centennial Archaeology, Inc. On file, Colorado Office of Archaeology and Historic Preservation, Denver. McFaul, Michael, Karen Lynn Traugh, Grant D. Smith, William Doering, and Christian J. Zier 1994 Geoarchaeologic Analysis of South Platte River Terraces: Kersey, Colorado. Geoarchaeology: An International Journal 9(5):345-374. Mehls, Carol Drake, and Steven F. Mehls 1988 Weld County, Colorado Historic Agricultural Context. Office of Archaeology and Historic Preservation and Colorado Historical Society, Denver. Natural Resources Conservation Service (NRCS) 2023 Web Soil Survey. Soil Survey Geographic (SSURGO) database. Available at: http://websoilsurvey.nres.usda.gov/. Accessed December 13, 2023. Nationwide Environmental Title Research (NETROnline) 2023 Historic Aerials Viewer. Available at: https://www.historicaerials.com/viewer. Accessed December 13, 2023. Spath, Carl, and Jennifer Corwin 1998 5WL2750.1 Management Data Form. KNE Front Runner - Amoco -West. Prepared by Greystone. On file, Colorado Office of Archaeology and Historic Preservation, Denver. 18 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Town of Gilcrest, Colorado 2023 Town History. Available at: https://townofgilcrest.org/about/town-history/. Accessed December 13, 2023. U.S. Geological Survey (USGS) 2023 TopoView. National Geologic Map Database. Available at: https://ngmdb.usgs.gov /topoview/viewer/. Accessed December 13, 2023. Weld County 2023a History of Weld. Available at: https://history.weldgov.com/Home. Accessed December 13, 2023. 2023b Weld County Property Portal. Available at: https://propertyreport.co.weld.co.us /?account=R4640086. Accessed December 13, 2023. Wray, Vinnie, Wes Bacon -Schulte, Sean Doyle, and Noelle Boyer 2011 A Class III Cultural Resource Inventory for the Proposed DCP Midstream La Salle Pipeline Project, Weld County, Colorado. SWCA Environmental Consultants, Broomfield, Colorado. 19 Hello