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Home My WebLink About20240563.tiffaQ COLORADO Division of Reclamation, Mining and Safety Department of Natural Resources NOTICE Consideration of 112c Construction Materials Reclamation Permit Application DATE: March 11, 2024 TO: Weld County Commissioners 1150 O St Greeley, CO 80631 RE: Ogilvy River Farm Pit, File No. M-2024-006 RECEIVED MAR 14 2024 WELD COUNTY COMMISSIONERS Please be advised that on March 11, 2024, Ogilvy River Farm, LLC, whose address and telephone number are 1695 Colorado Parkway, Eaton, CO 80615; (970) 590-5551, filed an application to conduct a(n) Surface mining and reclamation operation, at or near Section 5, Township 5N, Range 64W, 06th Principle Meridian, in Weld County. Please be advised that the permit area may be located in more than one Section, Township, and Range. Affected lands will be reclaimed to support a(n) Developed water resources post -mining land use. The application decision date is scheduled for June 9, 2024. A copy of the application is available for review at the Weld County Clerk & Recorder's office and at the office of the Division of Reclamation, Mining and Safety. The application, as well as all other permit documents, can also be viewed at https://dnrweblink.state.co.us/drms/search.aspx by searching M2024006 in the "Permit No" field. A user guide is available to help first time users of the imaged document system and can be viewed at https://drive.google.com/file/d/118OUdf Mpjo3kxlHkP5hMH-w7MeStxX7/view. To be considered in the review process, comments or objections on the application must be submitted in writing within twenty (20) days of the date of the last news aper public notice. You should contact the applicant for the newspaper publication date. The Office will assume y u have no comment or objection to the proposed activity if none are received by the end of the public comment p riod. If you need additional information or have any questions regarding the above -named application, please contact Brock F. Bowles at the Division of Reclam tion, Mining and Safety, 1313 Sherman Street, Room 215, Denver, CO 80203, by telephone at 303-866-3567 x 8142, or by email at Brock.bowles@state.co.us. MAP -05A 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.pov Jared S. Polls, Governor I Dan Gibbs, Executive Director I Michael A. Cunningham, Director ?1hc'WLL42 cc.'�Lcoa Mu!MjKoInAjMK) 3)27) I z4 To(f.k 1.Klt3DI Vt41 5a) 51p-112-2-1 RECEIVED MAR 042024 WELD COUNTY COMMISSIONERS NOTICE OF FILING APPLICATION FOR COLORADO MINED LAND RECLAMATION PERMIT FOR REGULAR (121 CONSTRUCTION MATERIALS EXTRACTION OPERATION NOTICE TO THE BOARD OF COUNTY COMMISSIONERS Weld COUNTY Ogilvy River Farm, LLC (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 Recourse use. Pursuant to Section 34-32.5-116(4)(m), C.R.S., the Board may confer with the local Board of County 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), 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 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 descriptionof the change. Publ ijwii& '110.4 Led pLia pi 1411)11-1+0 bA--) cwie.•KI pp) Duci sa) 3141D-1 2024-0563 Application for: DRMS 112 Rec amation Operation Ogilvy River arm Pit. - M • Ogilvy River Farm, LLC 1695 Colorado Parkway Eaton, CO 80615 Phone: 970-590-5551 Prepared By: J&T Consulting, Inc 305 Denver Avenue - Suite D Fort Lupton, CO 80621 Ph: 303-857-6222 www.j-tconsulting.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 APPLICABILITY: CONSTRUCTION MATERIAL REGULAR (112) OPERATION RECLAMATION PERMIT APPLICATION PACKAGE COLORADO DIVISION OF RECLAMATION MINING SAFETY This application package is for a construction materials operation which affects 10 acres or more. If you plan to conduct a construction materials extraction operation which meets these criteria, please follow the instructions provided in this package, in the Rules and Regulations, and in the Colorado Land Reclamation Act for the Extraction of Construction Materials, as required. RECOMMENDATIONS PRIOR TO FILING: The Construction Material Rules and Regulations (the Colorado Land Reclamation Act for the Extraction of Construction Materials, Section 34-32.5-101, et seq., C.R.S., and 2 CCR 407-1) and the Colorado Mined Land Reclamation Board (the "Board") regulate the permitting, operational and reclamation requirements for all construction material extraction operations in Colorado. It is your obligation to comply with the Act and Regulations. You are encouraged to obtain and review a copy of the Rules, available for $8.00 from the Division of Reclamation, Mining, and Safety (the "Office"). In order to submit your application properly, it is recommended that you review the Act and: Rule 1.1 Rule 1.4.1 Rule 1.4.5 Rule 1.6 Rule 3.1 Rule 3.3.1 Rule 4 Rule 6 Rule 6.2 Rule 6.4 Rule 6.5 Definitions; Application Review and Consideration Process; Specific Requirements for Regular 112 Operations; Public Notice Procedures; Reclamation Performance Standards; Operating without a Permit - Penalty; Performance Warranties and Financial Warranties; Permit Application Exhibit Requirements; General Requirements of Exhibits; Specific Permit Application Exhibit Requirements; and Geotechnical Stability Exhibit. It is recommended that you contact the agencies listed in the application section titled "Comp] iance With Other Laws" prior to submitting the application to the Office . Office of Mined Land Reclamation Office of Denver • Grand Junction • Durango Active and Inactive Mines FtLI 3 REQUIREMENTS: In order to apply for a Reclamation Permit for a Regular 112 Operation, please provide: o One (1) signed and notarized completed ORIGINAL and one (1) copy of the completed original Regular 112 Operation Application Form. ORIGINAL SIGNATURES MUST BE DONE IN BLUE INK. ° Two (2) copies of Exhibits A -S (required sections described in Rule 6). o Two (2) copies of Addendum 1 - Notice requirements (described in Rule 1.6.2(1)(b)). A sample of this notice is attached for your use. o The Geotechnical Stability Exhibit when required by the Division. o The application fee. The ninety (90) day period for review of the application and exhibits will NOT begin until all required information and fee are submitted. The Office will then review the submitted information for adequacy. NOTICE REQUIREMENTS: 1. You MUST send a notice, on a form approved by the Board, to the local board of county commissioners. A copy of this "Notice of Filing Application" form is attached for your use. 2. If the mining operation is within the boundaries of a conservation district, send a notice to the board of supervisors of the conservation district, PRIOR to filing the application. A copy of this "Notice of Filing Application" form is attached for your use. 3. You MUST include proof of notice #1 and #2 above with the application at the time the application is submitted to the Office for filing (Rule 1.6.2(1)(g)). 4. PRIOR to filing the application, place for public review a copy of the application, less confidential items, with the clerk or recorder of the county or counties in which the affected land is located. 5. You MUST include an affidavit or receipt demonstrating that the application was filed with the county clerk or recorder at the time the application is submitted to the Office for filing. 6. Any changes or additions made to an application submittal MUST be filed with the county clerk or recorder. You MUST also provide the Office with an affidavit or receipt demonstrating that the change was filed with the county clerk or recorder no later than the close of business on the day the change was filed with the Office (Rule 1.8.1(2)). 7. Within ten (10) days after your application is considered filed, you must publish four times in a newspaper of general circulation, in the locality of the proposed mining operation, the notice described in Rule 1.6.2(1)(d). 8. In addition, after the first publication you must mail or personally serve a copy of the notice described in Rule 1.6.2(1)(d) to all owners of record of surface rights to the affected land and all owners of record of lands that are within 200 feet of the boundary of the affected land (Rule 1.6.2(1)(e)). A copy of a form which includes all required information for the notice is attached for your use. 9. Prior to the Office making a decision (consideration of the application), you MUST submit a copy of the proof of publication from the newspaper and proof of all required notices. Proof of the notices may be by submitting copies of return receipts of a certified mailing or by proof of personal service (Rules 1.4.1(4), 1.4.2(4)(c), 1.6.2(1)(a)(ii), and 1.6.2(1)(g)). The copy of the application and any changes or additons placed at the office of the county clerk or recorder shall NOT be recorded, but shall be retained there for at least sixty (60) days after a decision on the application by the Office and be available for inspection during this period. At the end of this period, the application may be reclaimed by the applicant or destroyed (Rule 1.6.2(2)). APPLICATION REVIEW PROCEDURES: The Office shall approve or deny the application within ninety (90) days of filing unless the date for consideration by the Office is extended pursuant to Rule 1.8. The time for consideration shall not be extended beyond ninety (90) days after the last such change submitted. For complex applications, the review period may be extended an additional sixty (60) days. Please see Rule 1.1(10) for the definition of what constitutes a complex application. APPLICATION APPROVAL/DENIAL: If the requirements of the Act and Mineral Rules have been satisfied, the Office will approve the application. The Act also provides for automatic approval if no action is taken by the Office by the end of the review period. If the Act and Regulation requirements have not been satisfied, the Office will deny the application. If the Office denies the application, you may appeal to the Board for a final determination by submitting a written request for administrative appeal to the Board within 60 days of the decision date (Rule 1.4.7). PERFORMANCE AND FINANCIAL WARRANTIES: A performance warranty, and a financial warranty dollar amount determined during the application review process, must be submitted and approved by the Office PRIOR to permit issuance. A financial warranty should NOT be submitted until a decision on the application has been made. If the applicant is a unit of state or county government, then ONLY a performance warranty is required. Several different types of financial warranties are allowed by the law. Please review Rule 4.0 to determine which type of financial warranty you desire to use. You may obtain the appropriate warranty forms from the Office during the application review period. Please note that an application approval DOES NOT convey a right to be n o2erations. You MUST submit and have ap roval of your performance and financial warranties, and receive your copy, of the signed permit document PRIOR to beginning orsasite mining activity, AUTOMATIC PERMIT APPROVAL: An automatic approval will occur where the Office fails to notify the applicant/operator that the application has been denied. This decision must be made ninety (90) calendar days from the date the application was determined to have been filed. However, the performance and financial warranties must be submitted and approved by the Office before the permit will be issued even if you receive an automatic approval. NO MINING OPERATIONS SHALL BEGIN UNTIL A PERMIT IS ISSUED (Section 34-32.5-109(1), C.R.S.). -iv COMPLIANCE WITH OTHER LAWS: Compliance with the Act and Rules and Regulations of the Mined Land Reclamation Board DOES NOT relieve you of your responsibility to comply with all other applicable state and federal laws. We recommend that you contact the following agencies to determine whether you need to comply with their legal requirements: o The Colorado State Historical Preservation Office regarding properties of historical significance including the need for an archeological survey, procedures for requesting a file search, and inventory forms to identify structures. 0 Colorado Division of Water Resources with regard to water rights; Colorado Department of Health, Water Quality Control Division, with regard to the discharge of pollutants into the State waters; o Colorado Department of Health, Air Pollution Control Division, with regard to the need for a fugitive dust permit; o U.S. Bureau of Land Management or the U.S. Forest Service if the proposed operation will occur on federal lands; ® U. S. Army Corps of Engineers regarding a dredge and fill (404) permit; and The County Planning Department for the county or counties in which your proposed operation is located. Section 34-32.5-109(3), C.R.S, requires a mining operator to be responsible for assuring that the mining operation and the post -mining land use comply with local land use regulations and any master plan for extraction adopted pursuant to Section 34-1-304, C.R.S. COMPLETION OF MINING: Upon completion of any phase of reclamation, you should consult Rule 3.1 for reclamation standards and 4.16 for details on how to request a reclamation responsibility release from. the Board. 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 MAR 04202k WELD COUNTY COMMISSIONERS CONSTRUCTION MATERIALS REGULAR (112) OPERATION RECLAMATION PERMIT APPLICATION FORM CHECK ONE: There is a File Number Already Assigned to this Operation Permit # M - COLORADO DIVISION OF RECLAMATION MINING (Please reference the file number currently assigned to this operation) New Application (Rule 1.4.5) ElConversion Application (Rule 1.11) Amendment Application (Rule 1.10) Permit # M - - - (provide for Amendments and Conversions of existing permits) &- SAFETY 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 tr anie to he used on permit'): Ogilvy River Farm, LLC 1.1 Type of organization (corporation, partnership, etc.): Corporation 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 4. Fees: 4.1 4.2 4.4 4.5 Ogilvy River Farm Pit New Application New Quarry Application Amendment Fee Conversion to 112 operation (set by statute) Primary commoditie(s) to be mined: Sand Gravel 5.1 Incidental commoditie(s) to be mined: 1. - lbs/Tons/vr 3. / lbs/Tons/vr 4. 2. lbs/Tons/yr 5. 71.91 permitted acres acres 71.91 acres $2,696.00 $3,342.00 $2,229.00 $2,696.00 5.2 Anticipated end use of primary commoditie(s) to be mined: Construction Aggregates 5.3 Anticipated end use of incidental commoditie(s) to be mined: NIA application fee quarry application amendment fee conversion fee lbs/Tons/vr lbs/Tons/yr 6. Name of owner of subsurface rights of affected land: Ogilvy River Farm, LLC If 2 or more owners, "refer to Exhibit O" 7. Name of owner of surface of affected land: Ogilvy River Farm, LLC 8. Type of mining operation: Surface Underground Location Information: The center of the area where the majority of mining will occur: COUNTY: Weld PRINCIPAL MERIDIAN (check one): ✓ 6th (Colorado) fa 10th (New Mexico) in Ute SECTION (write number): S 5 TOWNSHIP (write number and check direction): T 5 North North ID South RANGE (write number and check direction): R 64 West El East " West QUARTER SECTION (check one): N b SW El QUARTER/QUARTER SECTION (check one): NE NW SE SW GENERAL DESCRIPTION: (the number of miles and direction from the nearest town and the approximate elevation): Approximately 1.8 miles North of Kersey. Elevation 4599.09 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 min sec (2 decimal places) Longitude (W): deg min sec , (2 decimal places) OR Example: (N) 39.73691° (W) -104.98449° Latitude (N) 40 .41929 decimal (5 places) Longitude(W) 104 .56466 (5 decimal places) OR Universal Tranverse Mercator (1 TM) Example: 201336.3 E NAD27 Zone 13 4398351.2 N UTM Datum (specify NAD27, NAD83 or WGS 84) Nad 83 Zone 1 3 ( P fy Easting Northing 11. Correspondence Information: APPLICANT/OPERATOR (name, address, and phone of name to be used on permit) Contact's Name: Company Name: Street/P.O. Box: City: State: Telephone Number: Fax Number: Todd Bean Title: Managing Member Ogilvy River Farm, LLC 1695 Colorado Parkway P.O. Box: Eaton Colorado 970 a _ 590-5551 C Zip Code: 80615 PERMITTING CONTACT .CT (if different from applicant/operator above) Contact's Name: Company Name: Street/P.O. Box: City: State: Telephone Number: Fax Number: INSPECTION CONTACT Contact's Name: Company Name: Street/P.O. Box: City: State: Telephone Number: _ Fax Number: CC: CC: J.C. York Title: Principal/Owner J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton P.Q. Box: Co (303 ) 857-6222 Zip Code: 80621 Title: P.U. Box: Zip Code: ) ) STATE OR FEDERAL LANDOWNER (if any) N/A Agency: Street: City: State: Telephone Number: ( )4. Zip Code: STATE OR FEDERAL LANDOWNER (if any) Agency: N/A Street: City: State: Telephone Number: Zip Code: ) 4 12. Prima futurc 'Post -mining land use (check one): Pastureland(PL) Forestry(FR) Recreation(RC) L_! Cropland(CR) Rangeland(RL) Residential(RS) Developed Water Resources(WR) 13. Primary present land use (check one : Cropland(CR) Pastureland(PL) General Agriculture(GA) Fr Rangeland(RL) _ Forestry(FR) Wildlife Habitat(WL) Residential(RS) El Recreation(RC) Industrial/Commercial(IC) , Developed Water Resources(WR) riGeneral Agriculture(GA) Wildlife Habitat(WL) Industrial/Commercial(IC) Solid Waste Disposal(WD) 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: n 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: N/A 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 5 MOIL 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 1, 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 fonts, 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)(1); EXHIBIT A EXHIBIT B EXHIBIT C EXHIBIT D EXHIBIT E EXHIBIT F EXHIBIT C EXHIBIT H EXHIBIT I EXHIBIT 3 EX1EB IT K EXHIBIT L EXHIBIT M EXHIBIT N EXHIBIT 0 EXHIBIT IT 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)(b) of the Rules and Regulations. If you have any questions on preparing the Exhibits or content of the information required, or would lice to schedule a pre -application meeting you may contact the Office at 303-866-3567. Responsibilities as a Pennitt : 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 of the 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; Yj 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 of July 1, 1995, the annual fee is for the period of July 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. For_ oint. venture/partnership 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. NOTE TO COMMENTORS/OBJECTORS: It is likely there will be additions, changes, and deletions to this document prior to final decision by the Office. Therefore, if you have any comments or concerns you must contact the applicant or the Office prior to the decision date so that you will know what changes may have been made to the application document. The Office is not allowed to consider comments, unless they are written, and received prior to the end of the public comment period. You should contact the applicant for the final date of the public comment period. If you have questions about the Mined Land Reclamation Board and Office's review and decision or appeals process, you may contact the Office at (303) 866-3567. -8 Certification: As an authorized representative of the applicant, I hereby certify that the operation described has met the minimum requirements of the following terms and conditions: 1. To the best of my knowledge, all significant, valuable and permanent man-made structure(s) 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), CROSS). 2. No mining operation will be located on lands where such operations are prohibited by law (Section 34-32,5-115(4)(, C.R.S.; 3. As the appl icant/operator, 1 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 Reclamation Board pursuant to section 34-32, S-112,C.R.S., of the Colorado Land Reclamation Act for the Extraction of Construction Materials. Any alteration or modification of this forth shall result in voiding any permit issued on the altered or modified form and subject the operator to cease and desist orders and civil penalties for operating without a permit pursuant to section 34-32.5-123, CRS. Sf Signed and dated this / day of_ Ogilvy River Farms, LLC Applicant/Operator or Company Name Signed: T;tl - Owner Winer State of CO 1 ss. County of IniP.t�/ G 2c), 71. If Corporation Attest (Seal) Signed: Corporate Secretary or Equivalent Town/City/County Clerk The foregoing instrument was acknowledged before me this is 4- day of Marc.. in 26V1, by To Bea as Ou net s - -a rte= a_ -masts Ar— 1-4 KEENAN HALL NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20174050791 MY COMMISSION EXPIRES DEC. 12, 2025 err of 0j yr ~bra' :r USC Notary Public My Commission expires: 141/12120 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 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 West Greeley DISTRICT Ogilvy River Farm, LLC (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 ofReclamation, Mining, and Safety (the "Division") and the local county clerk and recorder. The applicant/operator proposes to reclaim the affected land to Developed Water Resourse 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 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. EXHIBIT A Legal Description A parcel of land situated in the South 16 of the Southeast 1/4 of Section 5, and the Northeast % of the Northeast % of Section 8, Township 5 North, Range 64 West of the 6th Principal Meridian, in Weld County, Colorado, more particularly described as follows: The TRUE POINT OF BEGINNING being the northwest corner of the Northeast % of the Northeast 1/4 of said Section 8; Thence, following the section line west, S 89° 16' 37.0" W for a distance of 1321.74 feet to a point on a line on the Northeast corner of the Northeast 1/4 of said Section 8. Thence, N 63° 39' 13.0" W for a distance of 123.42 feet to a point on a line. Thence, N 26° 16' 49.0" E for a distance of 70.02 feet to a point on a line. Thence, N 45° 52' 40.5" E for a distance of 157.05 feet to a point on a line. Thence, N 30° 56' 48.5" E for a distance of 203.59 feet to a point on a line. Thence, N 19° 09' 59.4" E for a distance of 242.10 feet to a point on a line. Thence, N 02° 45' 47.5" E for a distance of 345.48 feet to a point on a line. Thence, N 11° 50' 51.1" W for a distance of 111.96 feet to a point on a line. Thence, N 26° 30' 07.6" E for a distance of 107.37 feet to a point on a line. Thence, S 33° 34' 51.7" E for a distance of 62.68 feet to a point on a line. Thence, S 32° 32' 29.3" E for a distance of 35.48 feet to a point on a line. Thence, S 34° 00' 19.5" E for a distance of 73.68 feet to a point on a line. Thence, S 39° 27' 55.3" E for a distance of 36.40 feet to a point on a line. Thence, S 44° 34' 27.7" E for a distance of 34.81 feet to a point on a line. Thence, S 48° 43' 45.9" E for a distance of 61.91 feet to the beginning of a non -tangential curve, Said curve turning to the left through an angle of 210 49' 37.3", having a radius of 590.00 feet, and whose long chord bears S 64° 19' 00.0" E for a distance of 223.41 feet. Thence, S 75° 13' 48.6" E for a distance of 493.40 feet to the beginning of a curve, Said curve turning to the right through an angle of 03° 41' 36.6", having a radius of 540.00 feet, and whose long chord bears S 73° 23' 00.3" E for a distance of 34.80 feet. Thence, S 71° 32' 12.1" E for a distance of 146.46 feet to the beginning of a curve, DT Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application Said curve turning to the left through an angle of 12° 13' 37.6", having a radius of 260.00 feet, and whose long chord bears S 77° 39' 00.8" E for a distance of 55.38 feet. Thence, S 83° 45' 49.6" E for a distance of 250.78 feet to the beginning of a curve, Said curve turning to the left through an angle of 04° 38' 28.1", having a radius of 260.00 feet, and whose long chord bears S 86° 05' 03.7" E for a distance of 21.06 feet. Thence, S 88° 24' 17.7" E for a distance of 150.45 feet to the beginning of a curve, Said curve turning to the right through an angle of 08° 31' 14.9", having a radius of 340.00 feet, and whose long chord bears S 84° 08' 40.3" E for a distance of 50.52 feet. Thence, S 79° 53' 02.8" E for a distance of 105.16 feet to the beginning of a curve, Said curve turning to the right through an angle of 15° 59' 45.0", having a radius of 340.00 feet, and whose long chord bears S 71° 53' 10.3" E for a distance of 94.61 feet. Thence, S 63° 53' 17.8" E for a distance of 121.38 feet to the beginning of a curve, Said curve turning to the left through an angle of 06° 25' 20.7", having a radius of 260.00 feet, and whose long chord bears S 67° 05' 58.2" E for a distance of 29.13 feet. Thence, S 70° 18' 38.5" E for a distance of 315.53 feet to the beginning of a curve, Said curve turning to the right through an angle of 11° 52' 54.4", having a radius of 340.00 feet, and whose long chord bears S 64° 22' 11.4" E for a distance of 70.38 feet to a point of intersection with a non -tangential line. Thence, S 60° 11' 44.0" E for a distance of 110.28 feet to a point on a line. Thence, S 00° 49' 51.5" E for a distance of 278.00 feet to a point on a line. Thence, S 89° 16' 37.0" W for a distance of 10.00 feet to a point on a line. Thence, S 01° 19' 19.5" E for a distance of 575.21 feet to a point on a line. Thence, S 14° 17' 10.0" E for a distance of 395.20 feet to a point on a line. Thence, S 17° 59' 10.0" E for a distance of 112.00 feet to a point on a line. Thence, S 22° 16' 40.0" E for a distance of 262.87 feet to a point on a line. Thence, S 89° 13' 57.3" W for a distance of 615.87 feet to a point on a line. Thence, N 47° 56' 59.2" W for a distance of 465.13 feet to a point on a line. Thence N 65° 38' 24.6" W a distance of 604.09 feet to a point on a line. Thence, following the section line north, N 01° 10' 25.0" W for a distance of 739.33 feet to the TRUE POINT OF BEGINNING The proposed mine entrance coordinates are as follows: Latitude: (N) 40.41929 Longitude: (W) 104.56466 i J&T Consulting, Inc. Ogilvy River Farm, LLC C Ogilvy River Farm Pit DRMS 112 Permit Application EXHIBIT B Vicinity Map See attached map. J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application P:122032 Todd Bean Gravel Property\Drawings\Plan Sheets\Vicinity Map1JT-Bean Vicinity Map.dwg, Vicinity Map, 2/28/2024 8:23:59 AM 1500 750 0 1500 SCALE IN FEET i J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 Ogilvy River Farm, LLC Ogilvy River Farm Pit Exhibit B - Index Map Date: 07.06.23 Job No: 22032 Drawn: TWT Scale: As Shown Sheet: 1 Of: 1 EXHIBIT C Pre-Mining/Mining Plan Map See attached maps. I.14 1 UT Consulting, Inc. Ogilvy River Farm? LW Ogilvy River Farm Pit DRMS 112 Permit Application P:122032 Todd Bean Gravel PropertylDrawings\Plan Sheets\Mining PIan'JT-Bean-Mining dwg, 1 Exhibit C1 - Pre Mining Ran, 2/215/2024 1:45:25 PM I L r ca.% I! 1 \ L , Pal' drejereDZ rY / e edit *Pod"' rat _ e -- • &C%r i'•N J I I SMITH Ma. SWIM HOUSE AND OJ1MMILLIC 150 1'f e — =Binaa - 50 SCAM* p cn oar' DOLT MIDGE & saute( te( (caw 000GATWIC so LIMO co) _courr Men tATal 1. G (coat rarapago mO LAND CO.) Maw DRCH HEADGATE (OGILVY Y IRRIGATING AND LAND CO) OG1LW CONCiiEIE LINED DITCH LATERAL (OGLW IRRIGATING MD LAND CO.) OttaT DITCH (ocnw IRRIGATING MID LAND Co.) liSsiromme AE ANDONED PDC over, INC. CI GAS &ELL aMCKEKKOW 1 flit f:1naff 24' ROADWAY as out wow RIL4ei� 18012) taXPNd22 ARMY FARM � DeRcY CLECTICC LJPas.. Tn CC eltt 'afltc H XcEL ENERGY TO EC RaOCATED flW DITCH HEADGME (iXaLsy IRfaGATYlG AND LAP) CO) PaNY MICM ACRESS ROAD (OWN Oattotwo AND LAPO CO.) ti OGILVY IRRIGATION SITOJCTURE (OGILVY IRRIGATING AND LAND CO �s COOT MOM (RPDON IC. 2* A 4�s1 • %S If Nor s 3 .4•&Irait%te CNN tir1ZIP N. ,'ti • + tar a OGILVY 1'{f FAfhl No, •`�N's..� s1/4i \-,1/4 (< St CM OOZY POWER POLESA15113 a — —5280-- — a — ;— - ace -- s eo' RIOWT-Or-11Y5,11' 5m. 43720 EXISTING CONTOURS IPAOPER:Y LAE OGSW4C l'EXCE ExISf1Nc ROADS come tahoolamo O.trm EXISTING POWER POLE DUSTING OVCA5 UWE Ela C RIGHT -47-1409 OWING MEOW `IVY LOCH CULVERT i i(iOLlitt IRRIGATING AND LAND co) S COUNTY ROAD 80 ai a a a II •a •e . a.. _an SECTION UNE EXiStiNO 100 YR FU]ODPLNN EXISTING 100 YR FLOODWAY POUT 8C4i~r MSC LAC SLURRY SAL STOCKPILE AREA PROPERTY OWNER MAP ID WC, IittlaiD LOCATION l owit'X,ff sr..s LOGliarti PROPERTY OWNERS WITHIN 200 FEET MAP ID NAME/ADDRESS ASSESSORS ID NO. A STEPHEN & LUANN ZEHNADER 29251 COUNTY ROAD 53 GRE.EEY, CO 80631 8 CLA TRUST 1804 SEASHELL CT VING3SOR. CO 80530 C JAKE & VICIOE MILLER 28150 COUNTY ROAD 60 GREELEY, CO 90631 D oGILVY IRRIGATING & LAND CO 26002 COUNTY ROAD 80 GREELEY. CO 80631 E ABLUDUCYN LAND Tit 28904 COUNTY ROAD 53 GREELEY. CO 80831 F TERRY & ROBERTA WIDER 28900 COUNTY ROAD 53 GREELEY. CO 80831 G OGLLW RIVER FARM LLC 1895 COLORADO PKWY EATON, CO 80815 H LOWER LATHAM RF5'ERvoiR COMPANY 6209 W 20TH ST, STE A GREELEY. CO 80634 I ROBERTA SMITH 28879 COUNTY ROAD 53 GREELEY. CO 80831 J RONALD A: MARSHA BAKER LIVING TRUST 28808 COUNTY ROAD 51 GREELEY. CO 80631 CO) COW HOUSE AND OUTBUILDINGS (aLW RIMMIN G ATING AND UWD C $ Ave IIISE R FARlat -PaESS TOO Caw Roam MVER FARM SERVICE UNE 304 WATER LINE EASEMENT NO. 1482127) NO. 16 1 S G Caw RIVER FARM I I!E AND OUTBUILDINGS 096305400002 098304300019 096309000012 098309000012 098309000089 098.30900009D 096309200006 098308000024 098308000026 098308000027 K SCOUT ISLAND FARMS tit 096305000037 C/O MARK KROSS PO BOX 766 WINDSOR, CO 80578 L CORPORATION OF THE PRESIDING BISHOP 095305300055 50 E NORTH TE}PPLE, FL 22 SALT LAKE CITY. UT 84150 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND. GRAVEL ROADS, OR 9UILDINGF. NOTE: OGILVY RIVER FARM, LLC IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA, PERMIT AREA = 71.91 AC MINING AREA = 45.06 AC miN j n 473 n ▪ 0 x c U > c o n, a) Q- >>Ifa N._. '41.. CI LL Lh. 0 Cr) a fra a. as S. A COM Cf J&T CONSULTING pesift4OW Da"T :Tanana AIt 8ale P:122032 Todd Bean Gravel Property\Drawings\Plan Sheets\Mining PIanUT-Bean-Mining dwg, 2 Exhibit C2 - Mining Plan Map, 2/2812024 1A5:28 PM •♦ weestF. 1 rr /J adr"re isaims das t. a -a ----� ..a p ladrs. i a UDC ICALVIIOrk !'1 tbeN. w.64•6 f• 0— litualouwri l!ml,4Rrf moms stua.taanY MSC( 10Crit - s- a a - a a %,% t r \ ,r../j OBoraric =ow MONITORING WELL =SW {At; +6.EUSM LONG: 1Ca f 61,1- c,cont s�'q.Ocf is Wtlatw ti atnr ?_l s I 1 \'9 1f r Rit T.,. . 1z X44, 4* --+4,,/ , s t a - I. Mf r t 1 'N • ,� 1 1 firei-r, se\ t u 16 \kJ' II‘NeAl em- wr souni Plecir \ N s. fhtbn a a al as j rte' i AN.,; 2 tit COUNTY ROAD 60 a tt Ye I I� I I — —5280 5280 s — —0E- - —E— ' t. NNE ENTRANCE SCALE et SCALE HOUSE LArt C:i 4ICI20l'e L C, iitilot tai)W EXISTING CONTOURS PROPOSED CONTOURS P.�y� LACE t lING TIME EMSZINO ROCS EXISTING 04IERHEAD ELECTRC 065ftNG UNDERGROUND ELECTRIC 0011140 POWER POLL EASING OIL,/GAS UNE EMOTING IININC-OF-WAY EMOTING EMUDIT arts asI ....a is a a a is SECTION LINE Mat tOG 1* fip00"CieI i St CLOCONIY MC NOSS Wise MAT RIMY U STOcKFLE AREA SOIL BORIC LOCATION MONITORING *at. LY J4f1oN TYPICAL MINING SECTION N -TS. PERMIT AREA = 71 91 AC se TO MINING AREA = 45 D6 AC O SCALE IN FEET : 450 DowIEIN10 1RENai o 7 40 Q� r 0 If U 0 k n ca.a o G J ; 0Az {'T G em a. E a) Tn O Exhibit C2 - Mining Plan Map Ogilvy River Farm, LLC. z 03 5 J&T CONSULTING yert -4 atm totem Pimalitts rte; set tit atrno.b, a.� N R- EXHIBIT D Mining Plan Mining Limits Ogilvy River Farm, LLC proposes to mine in the land located in the Southeast % of the Southeast % of Section 5, Township 5 North, Range 64 West of the 6th Principal Meridian and the Northeast % of the Northeast 1/4 of Section 8, Township 5 North, Range 64 West of the 6th Principal Meridian, in Weld County, Colorado. The proposed mining site is located approximately 1,500 feet south of WCR 60%, is adjacent to WCR 53 on the side, and is adjacent to the South Platte River on the south side of the site. WCR 53 is immediately adjacent to the east side of the permit boundary and the South Platte River is immediately adjacent to the south side of the permit boundary. Access to the site will be located at the east side of the permit boundary off of WCR 53. The dominant land use surrounding the property is agricultural and industrial. The permit boundary will encompass approximately 71.91 acres which will all be affected acreage, and approximately 45.06 acres being mined. The remaining area will consist of access roads and disturbed land. The following table depicts the different affected acreage: Mining Area (acres) Plan Affected Acreage Mined Area 45.06 Access Roads 2.34 Disturbed Land 24.51 71.91 TOTAL 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 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. 1 J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application Products Sand and gravel will be the primary product produced from the Ogilvy River Farm 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 Ogilvy River Farm Pit property contains a significant commercial deposit of sand and gravel. The depth of interbedded sandy clays at the surface range from 1 to 11 feet. The thickness of the aggregate material ranges from 46 to 81.5 feet where bedrock contact occurs. Mining Methods The deposit will be dry mined after a slurry wall is constructed around the perimeter of the mining area. Mining will not expose groundwater prior to the slurry wall being constructed. Design specifications for the slurry wall and quality control procedures used during construction will ensure that the reclaimed reservoir meets State Engineer's Office (SEC} 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 and discharged where it will reach the South Platte River. The equipment and facilities may include, but are not limited to the following: Scaling Ecuipment 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_Equi,ment Dozers, loaders, scrapers, excavators, and compactors will be used for mining and earth moving operations. Haul Roads and Access Roads 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 UT Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application 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 proposed mining area. 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 mining the face will have a 2H:1 V slope to bedrock or the bottom of the future reclaimed reservoir. The processed aggregate material will be temporarily stockpiled near the portable processing plant. 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 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 90,000 cubic yards. The depth of the topsoil is approximately twelve inches over the majority of the mining area. The topsoil will be stripped and stockpiled prior to mining operations. The height of the topsoil stockpile will be approximately 15 feet. Mine Phasing Ogilvy River Farm, LLC anticipates mining and reclaiming the 55.78 -acre Ogilvy River Farm Pit progressing as shown on the Mining Plan Map. The overall time required to complete the mining and reclamation is estimated to be 12 years 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 at the outer edge where material will be moved toward the interior such that the mining slope can be established. The mining slope will be established for the entire perimeter in 3 to 6 feet intervals. UT Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application Dewatering Dewatering trenches will be placed along the perimeter of each mining area. The dewatering trench around the perimeter of the phase being mined will be placed at the toe of the mining slope. As the phase is mined deeper the dewatering trench will be lowered and moved laterally along the mining slope toward the center of that phase. Slurry walls are anticipated to be installed around the perimeter of prior to exposing groundwater and mining will continue to commence in those phases and it is expected minimal dewatering will be required after the slurry walls are installed due to the slurry walls cutting off groundwater infiltration into the pit. Ogilvy River Farm, LLC 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. 1.1 J&T Consulting, Inc. ild I Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application EXHIBIT E Reclamation Plan Lined water storage reservoirs will be the final reclaimed use for the Ogilvy River Farm Pit. Portions of mining area will be reclaimed as "native" areas, which will be re -seeded with native vegetation. The mining area will be reclaimed as a water storage reservoir. 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 (acres) Area Reservoir Water Surface 37.63 Access Roads 2.34 Reclaimed and Slopes Vegetated above Reservoir Land (Disturbed Water Surface) Land 31.94 TOTAL 71.91 Water Storage Reservoir In general, the mining limits will be mined down to the shale/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 and clay liner will ensure that the reservoir meets the State Engineer's Office (SEO) performance standards for permeability. All reservoir slopes will be reclaimed to at least 4.5H:1V V final grade. Since reclamation will be concurrent with mining, most soil, overburden, and bedrock material excavated during mining will be used almost immediately. Scrapers and dozers and compactors will be used to shape the reclaimed slope material along the reservoir perimeters to achieve the final grade. Upon placing the backfill material, 95 percent compaction will be achieved to ensure adequate integrity of the clay liner above the bench, backfilled areas for haul/access roads and recharge pond areas that are not within the future water storage/reservoir footprint. 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. 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. III J&T Consulting, Inc. id I Ogilvy River Farm, LLC Ogilvy River Farm Pit DBMS 112 Permit Application 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 Handlin': Backfilling will be done to provide stabilized shorelines around the reservoir and to minimize erosion. The backfill material will consist of gravel, overburden, clay, and topsoil from on -site materials. 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. Topsoiling Approximately the top six 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 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 is JET Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application 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 S p ecies Scientific Name Application (#PLS/acre) Rate* 2.50 Grasses Intermediate Wheatgrass Thinopyrum intermedium - 2.00 I Slender Wheatgrass Elymus trachycaulus, Pubescent Wheatgrass Thinopjyrum intermedium 3.00 Russian Wildrye Psathyrostachys Juncea 3.00 2.00 Western Wheatgrass Pascoprurn smithii Sand Dropseed Sporobolus cryptandrus 0.25 Application be doubled. rate is for drilling the seed. If seed is to be broadcast, the application rate will 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/Control I ing- Weeds/Reseeding . 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 Ls JtT Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application temporary earthen stockpile remains more than one growing season, it will be seeded with the seed mix above to prevent erosion. Water - General Rec uirement To minimize the effect on the prevailing hydrologic balance, Ogilvy River Farm, LLC 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 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 ft and the wells within the predicted water level change are in the mounded area so the overall impact of the slurry wall and clay liner will be insignificant and not noticeable because the depth to groundwater is greater than 30 feet at those well locations. Ogilvy River Farm, LLC proposes that they monitor groundwater levels through both interior (within phases of the mining) and exterior (outside the slurry wall lining) 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 Ogilvy River Farm, LLC to operate responsibly and to mitigate any damage to wells that is directly attributable to the mining and reclamation of this site. 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 5 years and 6 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: Acreage Time Reclaim Frame Phase to 1a Complete and Phase and 1 71.91 acres 5 years and 6 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 reclaimed at a 4.5H:1 V slope with the addition of clay, overburden, topsoil, and revegetation. For more information on sequencing and size of the reclamation activities refer to Exhibit L financial warranty calculations. LJET Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application EXHIBIT F Reclamation Plan Map See attached maps. JeT Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application P:122032 Todd Bean Gravel PropertytDrawings1Plan Sheets\Reclamation PIanUT-Bean Rec,dwg, 1 Exhibit Fl - Reclamation Plan Map, 2/28/2024 2:02:20 PM LAT 4&i' nsalto LCD: %J.3[A9 I W CAEsit PEr RECLAIMED RESERVOIR TOP ELEV - 4593 NORMAL. WATER SURFACE ELEV = 4590 NORMAL WATER SURFACE AREA = 37,6 ACRES WATER STORAGE VOLUME = 1,106 AC -FT L<r, ':w!i?iiil cS' LEGEND: EXISTING CONTOURS PROPOSED CONTOURS PROPERTY UNE EXISTING F₹hCE EXISTING ROADS EXISTING OVERHEAD ELECTRIC EXISTING UNDERGROUND ELECTRIC EXISTING POWER POLE EXISTING OiL/GAS LIVE EXITING RIGHT-OF-WAY TYPICAL RECLAMATION SECTION EVCICFILL EJC6i1NG TRENCH 'aim NATIVE IIATFRSVS PERIMETER GROUNDWATER DRAIN [TYPICAL SECTION IF REQUIRED) J&T CONSULTING P:\22032 Todd Bean Gravel PropertylDrawings1Plan Sheets\Reclamation Pian1JT-Bean Rec dwg, 2 Exhibit F2 - Reclamation Seeding Map, 2128/2024 2:02:22 PM Meer ?-��`' I acte) 'SA L„1/ 1 it • • • • a ! • ♦ • • n ags a • i a • 4 • a ! a a a• a a• a• a • • • • 4 ♦ } V • • • • • • at, i e n • a. Y ♦ ♦ a • • '• • • ♦• a If • f • • •• • !• r • . • a • aft, • • •• • a • ♦ riir • • aa a a • • •e • a ♦ , • • • • • • .f ••• • LA! 40.42363N LOW: 104 57316E W a i ��^`�-`sue-;`- P Ago= MOO tA1 cameo 1 l[ SA=tt a a a— — ss 150 75 u Xc; RECLAIMED RESERVOIR TOP ELEV - 4593 NORMAL WATER SURFACE ELEV = 4590 NORMAL WATER SURFACE AREA = 37.6 ACRES WATER STORAGE VOLUME = 1,106 AC -FT •a Y _ ♦ i 1� -• t • a 1�;. �•�J ntree. •♦•• • . • • IP • •� e R • •k;•ft s a aal•••• .. •fY •, f • a 4a aa • 4 ♦ • '• ! a y •' a f • fSee a Y 4 }• 1 f •• • • • ♦"• • a .• �• a • • • • a • a ♦ • Y • • • Y Y • -a - f ♦ • f� • • a •• •-•• • • • • a a a • •• ♦ • a • • •• ♦ •♦ • Y -• • • s • • • a a • 4 • ! s air e a a • • • ••• •• • • • a • .. • ♦ e ♦•_ Lant •••• -iiimr. raie a 450 • a . • a .. , • ! • •ia a • a a • a a ••a ♦ 4• a- asa a a • •a• !•. a a a • a • • • a •• • •• •♦ • • ♦ 4.••• • ae • • a • - t • s • • • a Z.* • •. •a• ••••a• s • Z~#e -•aa•- ••- •I1' • • a • • L• • • • • 4>• -a 2 I i sEar COLONY ROAD 60 i ••• a •• ...la Alt r ..1•. • • • • • • • • le • • • -a. ♦ —•♦ • • • • •fir • ♦:♦. • a♦• ••a ••• s • a • • a • • a Y• awe• s e e•• ♦ . r • a a a 'a • ♦ a ♦ • ♦ e e a • ♦ a . • .A7, 414;411711140 6064. 1'44.)4 W• • ♦ - • • • •• Sr • e s a t Y•• •♦ • a!•f •T•1•• a a-• • • • w awa • a • • ea 4 tran•‘-1 + ♦ta • yea I. a • •j a - -•..Ja e • t } a-• • ♦+flea ♦ f • ! • a a a a ►• • • • a . a • a a a • • . ♦ . Y • . . 4 • _ • .•• a • • a a • • a •• a a••• S a i a 4 ••••• • • • • • a at 4 4 ♦ • -•a s , ♦ 1 a • • as • a aa a • a 4 • • e • -a e♦L . ♦ - Y . • I I • a aaa • • ♦ a • • - T a e ' •4•L • a • • • • • •-•'=..'LA0•.i• • .• a Avg 'fltoPstr•a as t •• a ► a •. • a • s a • • • • as a sane, • ••• ♦ ♦ • ape • • • • •a • s a ♦ • • ♦ } ' � • • • • a . ♦ • • • a•♦ ♦ ♦ • aa• a ♦ - • a• • • • a aa• a - • - • • • •a • • a • a • • a a a • • s a • a • • ♦ . • - • • r '4'•• a a • ' • a a • •• • _ . .0. •• .0• a • ha•sa a a! t a ♦ra • Y t • 4 S a: Se 'MS LEGEND.: _ --5280- = OUSTING CONTOURS 5280 PROPOSED CONTOURS Fenn' LINTE EXISTING FENCE CGSRRa aw P= MC —E— — — EXISTING UNDERGROUND ELECTRIC Mb EXISTING POWER POLE - —G— — — EXISTING DM/GAS UNE EXISTING RICH -CF -WAY NOTE: ! a `4 a - = _ S -a as l-lfi fa 4 N ALL DISTURBED AREAS OUTSIDE OF THE WATER SURFACE WILL BE SEEDED AND MULCHED, WITH THE EXCEPTION OF THE ACCESS ROAD, WHICH WILL BE GRAVEL SURFACED. RECLAIMED AREA TABULATION: WATER SURFACE = 37.63 AC GRAVEL ACCESS ROAD = 2.34 AC SCARIFY, TOPSOIL, SEED AREA = 31.94 AC TOTAL AREA = 71.91 AC sEC11CN UNE VOSTIC 100 YR 1t4CGPl a COMO 104 tit ReCO ' pule .tx scurr 10640 Slay A_ RATER SWAM = a.N:rr, [CIF 096 11 J&T CONSULTING I fi�j V -t i 1 1 i Nop See IN iV Zesrmar tr "yeti 1'a ai c.� lt; t.rt AK n M Pan Sheet: Of 2 EXHIBIT G Water Information Introduction The Ogilvy River Farm Pit mining site is located in the Southeast % of the Southeast 1/4 of Section 5, Township 5 North, Range 64 West of the 6th Principal Meridian and the Northeast '/4 of the Northeast �/4 of Section 8, Township 5 North, Range 64 West of the 6th Principal Meridian, in Weld County, Colorado. The proposed mining site is located approximately 1,500 feet south of WCR 60%, is adjacent to WCR 53 on the side, and is adjacent to the South Platte River on the south side of the site. WCR 53 is immediately adjacent to the east side of the permit boundary and the South Platte River is immediately adjacent to the south side of the permit boundary. Access to the site will be located at the east side of the permit boundary off of WCR 53. The dominant land use surrounding the property is agricultural and industrial. 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. Mining of the Ogilvy River Farm Pit site will last for approximately 5 years and 6 months. Once reclamation is complete, the water storage reservoir will be created with a total surface area being 44.71 acres. The depth to groundwater ranges from 3 to 24 feet within the permit boundary (measured in MW -1 through MW -4, See the attached piezometer measurements table). The site will be mined down to a depth of 68 to 85 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 4581 feet. To enable dry mining at the Ogilvy River Farm 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 cell is completely mined, but before the reclamation has begun. The maximum size of dewatering trench will be 6,500 feet long and 5 feet wide, or 0.75 acres of exposed surface area. The water will be pumped into dewatering ditch, which traverses the site and ultimately into the South Platte River. As mining progresses, the dewatering trenches will shift to account for additional groundwater being exposed. The gravel pit will have a slurry wall liner constructed prior to the commencing of mining. Water Requirements Water use at the Ogilvy River Farm 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 Ogilvy River Farm Pit mining site will include groundwater exposed in the dewatering trenches. 1.1 J&T Consulting, Inc. WW Clyde Bernhardt Sand and Gravel Pit DRMS 112 Permit Application The maximum exposed surface area at the site during mining is estimated at 0.75 acres. Ogilvy River Farm, LLC 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 Ogilvy River Farm Pit mining site is estimated at 14.26 inches. Effective precipitation is calculated as 70% 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 Ogilvy River Farm Pit mining site is estimated at 650,000 tons. Using 4% moisture content, (2% for moisture in the product and 2% for water used to wash), the total associated consumptive use for water retained in the material mined and water used for washing 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 1 Well Permits in the Ogilvy River Farm 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 Ogilvy River Farm Pit — Groundwater Evaluation by McGrane Engineering, LLC that is attached that are within 600 or more feet of the mining limits that were within the 1 to 3 foot mounding area on the north and east side of the pit. J&T Consulting, Inc. WIN Clyde Bernhardt Sand and Gravel Pit DRMS 112 Permit Application Table G-1 - Permitted and not Decreed owned Wells by Ogilvy Within 600 River Farm, Feet or LLC Area of 10,3 foot mounding Map ID Permit No Structure ID Well Name Owner Address City State Zip Code 1 11749 Domestic Well John Sitzman Route 4 156 Box Greeley CO 80631 2 126287 Domestic Well Cabrera Martin Orozco 26347 60% CR Greeley CO 80631 3 127910 Domestic Well Charles and Achziger Lorene L. 29358 37 Hwy Greeley CO 80631 4 127911 Domestic Well William Jaimi Carlsen and 26358 CR 60% Greeley CO 80631 5 126291-A Domestic Well Rodger Beth Short and 26333 CR 60% Greeley CO 80631 6 13379 - R 0105430 Achziger Well 13379 - - Achziger 13379 Well Steven and Zehnder Loann A. 2365 CR 23 Lupton Fort CO 80621 7 13968 - R 0105276 Pfeif 1 - 13968 Well — Pfeif 13968 Well 1 - Jesus Church of Day Latter- Saints Christ of 139E Temple Ste 110 S St Salt City Lake UT 84111- 1103 8 55039-F 0106353 Donily Well 1 - Donily Well #1 Arluducyn Land, LLC P.O. Box 97 Kersey CO 80644 9 6383 - R 0105429 Achziger Well 6383 #1- - Achziger #1-6383 Well Charles Achziger Mary and 163 Route 1 Box Greeley CO 80631 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 Ogilvy River Farm Pit mining site results in material injury to surrounding wells, Ogilvy River Farm, LLC 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 Ogilvy River Farm 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. JET Consulting, Inc. WW Clyde Bernhardt Sand and Gravel Pit DRMS 112 Permit Application Impacts to Groundwater/l-I rologi ,I lance Ogilvy River Farm, LLC will monitor the groundwater levels surrounding the site and provide groundwater recharge if necessary via perimeter ditches/ponds. Ogilvy River Farm, LLC will construct these ditches/ponds in the locations where direct discharge to an existing adjacent irrigation lateral is not available to ensure that stabilized groundwater levels are maintained. They will discharge dewatering flows into existing adjacent irrigation laterals where possible to limit the disturbance to the surrounding land. A slurry wall liner is proposed around the mine and will likely be installed prior to the mining starting. To summarize the mitigation process, as the mining/dewatering occurs, Ogilvy River Farm, LLC 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, Ogilvy River Farm, LLC 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. Groundwater wells that are not owned by Ogilvy River Farm, LLC 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, Ogilvy River Farm, LLC will either obtain a well waiver from the owner of the well, or provide an agreement with the well owner that Ogilvy River Farm, LLC 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 Ogilvy River Farm, LLC, 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 Ogilvy River Farm, LLC 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 Monitorin 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, which are not likely to affect groundwater quality. To establish pre -mining groundwater quality at the site Ogilvy River Farm, LLC will have two monitor wells sampled quarterly. The upgradient monitor well that will be sampled is MW -I and the downgradient monitor well that will be sampled is MW -4. 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." J&T Consulting, Inc. WW Clyde Bernhardt Sand and Gravel Pit DRMS 112 Permit Application 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. Ogilvy River Farm, LLC 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. J&T Consulting, Inc. WW Clyde Bernhardt Sand and Gravel Pit DBMS 112 Permit Application Ogilvy River Farms Pit - Monitor Well Readings Well Designation JT MW -1 JT MW -2 JT MW -3 JT MW -4 Description Northwest Side Northeast Side Southwest Side Southeast Side Top of Well Elevation (ft) , 4612.31 4611.58 4592.99 4592.7 Ground Elevation (ft) ,i 4610.25 4609.27 _ _ _ 4591,01 4590.66 Date Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation Groundwater (ft) I of Depth to Groundwater from Top of Well (ft) Depth to Groundwate r 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) July 7, 2023 23.67 ' 21.36 4587.91 4.67 2.86 4588.32 5.25 3.44 23.46 21.40 4588.85 4587.22 August 14, 2023 25.75 23.69 4586.56 26.08 23.77 4585.50 7.42 5.61 4585.57 7.04 5.23 4585.43 September 13, 2023 24.58 22.52 4587.73 25.00 22.69 4586.58 _ , 6.50 4.69 4.77 4 4585.89 4586.49 6.58 October 16, 2023 24.83 22.77 4587.48 25.17 22.86 4586.41 6.83 I -_-- 4586.16 6.58 4.77 4585.89 5.02 November 17, 2023 24.92 22.61 4586.66 6.52 4.71 4586.47 6.54 4.73 4585.93 24.46 22.40 4587.85 December 22, 2023 24.71 22.65 4587.60 25.31 23.00 4586.27 6.92 5.11 4586.07 6.88 5.06 4585.60 January 20, 2024 25.58 23.27 4586.00 7.17 5.36 4585.82 7.13 5.31 25.00 22.94 4587.31 4585.35 February 25, 2024 25.06 23.00 4587.25 25.75 23.44 4585.83 7.33 5.52 4585.66 7.17 5.36 4585.30 SGS Engage — Analysis Crosstab _ballb_.-a LJob:DA6OII6 Analysis: General Chemistry - SW846 9056A Regulation 41 Table Value Standard Description: Analyte: pH - from field sample information pH Unit: Client Name Clien#._Sampie ID Lab Sample ID - attix n,Satripl*Datirc _ J&T Consulting (Fort Lupton, CO) OGILVY RIVER PIT MW -1 DA60116-3 Ground Water 11/17/2023 11:10 AM 7.4 6.5-8.5 J&T Consulting (Fort Lupton. CO) OGILVY RIVER PIT MW --1 DA60116-3F Groundwater Filtered 11/17/2023 11:10 AM J&T Consulting (Fort Lupton, CO) OGILVY RIVER PIT MW -3 DA60116-4 Ground Water 11/17/2023 11:35 AM 7.5 6.5-8.5 J&T Consulting (Fort Lupton, CO) OGILVY RIVER PIT MW -3 DA60116-4F N Groundwater Filtered 11/17/2023 11:35 AM I Calculated as: (Nitrogen, Nitrate) + (Nitrogen, Nitrite) 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 o#her units Chloride Chloride (mg/L, unless other units Flouride (mg/I...unless other units Fluoride mg/1 given) mg/t I given) mg/I given) - Not Tested 400 140 250 2 0.4 Not Tested 400 88.6 250 2 <0.20 E - General Chemistry - SW846 9056A i 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/1 mg/1 (mg(L, unless other unilsgiuen} - 9.63 10 9.7 10 0.11 12.6 a 10 12.6 10 0.0092 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) mail _ m ! iven) . u cgii 1 147 430 250 <100 1 150 481 250 <100 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010.0 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Aluminum Dissolved Antimony Antimony Dissolved Arsenic Arsenic Dissolved Barium tmg,+ .., unless other units given) ugh (rtmg/L, unless other units given) ugh (rnq/L, unless other units given) ugh 5 <30 0.006 X25 0.01 49.5 5 <30 0.006 <25 0.01 33.6 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 601 DC Barium Dissolved Beryllium Beryllium Dissolved Cadmium Boron Boron Dissolved (mgt{ unless other units given) ugh ugli _ _ 'mgl&, unless other units given) (mg/L unless other units given) ugh 2 0.004 154 <10 <10 0.75 2 <10 0.004 158 0/5 <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 Chromium Dissolved Cadmium Dissolved Chromium Cobalt Dissolved Copper Cobalt (mg/L, unless other units givers ugh - (mg/L, unless other units !lien) Lis JJl ( art unless other units given) owl 0.005 <10 0.1 <5.0 0.05 <10 0.005 <10 0.1 <5.0 - - <10 0.05 Regulation 41 Table Value Standard g Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 60100 Regulation 41 Table Value Standard j Metals Analysis - SW846 6010C Copper Dissolved Iron iron Dissolved Lead Lead Dissolved Lithium ugfi OnglL, unless other units given) ugh t mg1'L, unless other units given) (m_9; L, unless other units given) ugh 0.2 0.3 <50 0.05 74.8 X70 0.2 <70 0.3 <50 I 0.05 33 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 7470A , Regulation 41 Table Value Standard I Metals Analysis - SW846 6010C Lithium Dissolved Manganese Manganese Dissolved Mercury Mercury Dissolved Molybdenum (mg/L, unless other units given) _ ugh ugil (mg/1.., unless other units given) tngii_, unless other units given) ucg/1 fit 2.5 _ 186 <0.10 0.002 <10 0.05 2.5 82.7 0.05 <0.10 0.002 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 60100 Regulation 41 Table Value Standard Metals Analysis - SW84 6 6010C Molybedenum Dissolved Nickel Nickel Dissolved Selenium Selenium Dissolved Silver (mg/L. unless other units given) ugh (mg!L unless other units given) ugh (mg/L, unless other units give) ugh] 0.21 <30 0.1 <50 0.02 <30 0.21 <30 <50 0.02 <30 0.1 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Metals Analysis - SW846 6014C Value Standard Silver Dissolved Thallium Dissolved Uranium Thallium Uranium Dissolved Vandium (mg/L. unless other units given) ug/l (rngfL, unless other units given) - ug i (mgI'L1 unless other units given) ugii - _ " _ II y.,-- 0.05 <10 0.002 72.9 0.03 <10 0.05 <10 0.002 <50 0.03 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 60100 Regulation 41 Table Value Standard Vandium Dissolved _ Zinc Zinc Dissolved (mg►L, unless other units given) ugh' (nng[L, unless other units given) 0.1 <30 2 0.1 <30 2 McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247 E -Mail: dennis ft,mcgranewater.com September 19, 2023 Mr. JC York J&T Consulting, Inc. 305 Denver Avenue, Suite D Ft. Lupton, CO 80621 McGrane Water Engineering Via email at: jcvork(akconsultingecom RE: Ogilvy River Farm Pit (ORFP) mine — Groundwater Evaluation Dear Mr. York: The proposed Ogilvy River Farm Pit (ORFP) mine is located approximately 5 miles east of Greeley, Colorado in Sections 5 and 8, Township 5 North, Range 64 West (6'h PM). The site is located on the north side of the South Platte River (SPR) floodplain with the southern pit boundary located between 250-800 feet from the SPR. Figure 1 shows the proposed pit boundary, the study area (-20 square miles) where data was collected, and the model area E-7.5 square miles). The study area includes approximately 260 permitted and constructed water wells per the State's well database (CDWR, 2023). The model area extends from the confluence of the SPR and the Poudre River to approximately 1 mile east of the pit. Lone Tree Creek enters the model area from the north approximately 0.5 miles east of the Poudre River confluence with the SPR. 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 a slurry wall around the proposed pit. 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. Shadowing between the pit and the SRP is expected to be less than mounding upgradient of the pit due to the buffering effect caused by induced seepage from the SPR. GROUNDWATER INVESTIGATION To evaluate the groundwater level changes in response to the slurry wall installation, we: 1. Conducted a literature search of existing published groundwater literature of the area; 2. Compiled well data from the State's Well database (CDWR, 2023) including: well name, permit number, location, well depth, depth to water, and pumping rate (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 well permits and site monitoring well drilling data; 4. Compiled monitoring well data in Table A2 from monitoring wells drilled by Cesare, Inc during June 2023. 5. Created a MODFLOW groundwater model to evaluate changes in groundwater levels resulting from a slurry wall installed around the pit; and Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 2 of 32 6. Documented the data, our assumptions, modeling results, conclusions and a discussion of parameter and model uncertainty in Appendix A - Groundwater Evaluation and Modeling. Results Summary We used the USGS MODFLOW2000 (Harbaugh et al, 2000) modeling program and the Groundwater Vistas (version 8) Groundwater Users Interface (GUI) to prepare model files and evaluate the results. Using reasonable boundary conditions and aquifer properties, we determined that mounding between 1 and 4 feet extends approximately 3,500 feet up -gradient (north), and shadowing less than approximately -1.5 feet occurs between the pit and the SPR to the south, as shown on Figure A9. There are eleven registered domestic wells and two monitoring wells located within modeled change between 1 and 3 ft as summarized in Table 1. Two of the wells are monitoring wells which are not a concern. Table 1-- Water Level Changes > 1.0 ft in Registered Wells Permit Applicant Twn Rng Sec Q160 Q.40 Use Modeled Change (+/-I ft) Well Depth Yield (gpm) Water Level (ft bgl) Permit Link 11749 SITZMAN, JOHN 5 N 64 W 5 NE SW Domestic 5 45 htt mild wr.state. co, usl +1-2 ft, 63 Tools/Wel l(Perrnitsj9O6Q 126287 CABRERA OROZCO, MARTIN 5 N 64 W 4 NW _ _ SW _ Domestic _ +1-2 ft. -- ttiitiWt.State.co.us, 70 -- To olshWellPermits19066 hops"//dwr,lat cot tJg 126291 64 W 4 NW SW Domestic +1-2 ft. 75 15 36 AMES, DELMAR 5 N ,Tools/WellPermits/9066 hirtos.//dwr.stataco,us) 127910 ACHZIGER CHARLES L & LORENE j 5 N 64 W - 5 SE NW Domestic +1-2 ft, 70 -- -- ToolsJWellPermits/9066 httrn;fidwr.state.co.uS/ 127911 CARLSEN, WILLIAM 5 N 64 W ! 4 SW -- -_ NW Domestic +1-2 ft. 70 Tools/WellPermits/' 066 httos://dwr.state.co.us/ 312497 PDC ENERGY INC (OLSON, 5 N 64 W 5 NW SE Monitoring +1-2 ft. ., 39.25 ToolillVellPermitV3530_ wMaEN)48 312498 PDC ENERGY INC OLSON, ( KAREN) 5 N 64 W 5 NW 4 I SE Monitoring +1-2 ft,.. 48 httPw. ••//d�vr state,cc►.usf + 37.9 LQoisJWellPermits/369© 126291-A SHORT RODGER & BETH 5 N 64 W 4 ® NW SW Domestic +1-2 ft. 74 15 36 htt ://dwrate_co.us/ loots/WellPermits/042.7 13379-R ZEHNDER STEVEN A & LOANN 5N i 4 64 W 5 t SE ' NE Irrigation >2 ft. 90 900 47 39 �httns:/`/dwr, htt s: dwrsltate.ca.ust rools/WellPerrnits/9061 tate_co.us d 13968-R 1 64 W 5 NE SW rIrrigation +1-2 ft. 86 -. CHURCH OF JESUS CHRIST 5 N Tools/WellPermits/9061 6383-R ACHZIGER CHARLES & MARIE 5 N 64 W 4 SW SW Irrigation +1-2 ft. 95 1200 55 i�ttrr,;J"/dwr sta�t,elco.us/ Tools/WellPermits/9059 Conclusions and Recommendations We do not believe the predicted rise in the water table of up to 3 feet will be noticeable to the homeowners listed in the table due because the depth, on average, is greater than 36 feet for the wells listed. For those wells without reported water levels, it is likely that their water level depths are similar. We ignored the presence of the New Cache la Poudre ditch and Ogilvy ditch flow from west to east north of the ORFP. When flowing, ditch leakage likely causes a seasonal rise in the water table. We do not know whether there is simply a vertical seepage gradient that won't be affected by the lined pit, or whether pit mounding could reduce ditch seepage or potentially mitigate mounding by absorbing the rise in the water table as a gain to the ditch. We therefore ignored the ditch's effects, so our analysis provides a worst -case simulation for well users. We recommend that the applicant: 1. Confirm the location of the SEO wells show on Figure A9; 2. Continue to monitor the recently installed mine site monitoring wells; and 3. Evaluate seasonal water table fluctuations prior to and after pit construction; and 4. Evaluate the correlation between canal recharge and increased water levels to differentiate between season recharge and pit impacts. McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demils@tncgJlallewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 3 of 32 If you have any questions, please give me a call. Sincerely, McGrane Water Engineers, Inc. Dennis McGrane, F.E., C.P.G Professional Credentials The technical material in this report was prepared by, or under the supervision and direction of Dennis McGrane RE, C.P.G., whose seal as a Professional Engineer in the State of Colorado and American Institute of Professional Geologists (AIPG) Certified Profession Geologist (CPG) are affixed below: McGranc Water Engiieeexing, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: deruus@mcgranewater.com 6N 65W 6N 64W Page 4 of 32 Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 5 of 32 APPENDIX A - GROUNDWATER EVALATION AND MODELING The proposed Ogilvy River Farm Pit (ORFP) mine is located approximately 5 miles east of Greeley, Colorado in Sections 5 and 8, Township 5 North, Range 64 West (6th PM). 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 1.5 miles of the proposed pit; and • Geologic logs from 10 boreholes and 4 monitoring wells installed around the pit in June, 2023. Table Al includes well data from 260 registered wells within the study area (Figure 1) extracted from the State's well database (CDWR, 2023). Figures la, lb, lc, and ld are zoomed -in versions of each quartile of Figure 1, that show more detailed locations and the 10 site borings and 4 monitoring wells. Well statistics including use, depth and yield are shown in Table Al and discussed below. Well Use Most of the registered wells shown on Figure 1 are used for irrigation, domestic and commercial uses as shown in the table below. Well use is important because some wells can be more impacted by the pit than others. For example, shallow high municipal or agricultural high capacity wells located downgradient from the pit are the most vulnerable because shadowing can reduce the aquifer saturated thickness and therefore well yield. No such vulnerable wells exist downgradient from the ORFP. Well Type T Amount 101 Irrigation Domestic 76 50 MonitoringSampling Cpmmercial 12 Domestic Household Use 5 Stock _ 5 Industrial 1 3 Municipal 3 Other 3 1 Are Dewatering ng 1 Total 260 Monitoring wells are the least impacted because they have small pumps that do not draw down the aquifer when pumping. Fifty wells are for monitoring and sampling. Compiled data in Table Al includes: the permit number, well owner, Colorado State Plane coordinate, USGS Digital Elevation Model (DEM) elevation, registered use, well depth, depth to bedrock, yield in gallons per minute (gpm) and reported static water level (SWL). Not all wells have completion records. Table A2 shows monitoring well data provided by Cesare, Inc./CMT Technical Services in June, 2023. The depth to bedrock ranges from 62 to approximately 99 feet. The depth to water ranges from 4.7 ft at MW -3 located on the south side of the pit near the SPR to 21.4 ft for both MW -1 and MW -2 located on the north side of the pit. Mc Gram Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 6 of 32 HYDRO GEOID GY 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; and Lindsay and Others, 1.998 and 2005). The most extensive study was conducted by the Colorado Water Conservation Board (CDM, 2006 and 2013) as part of the South Platte River Decision Support System project. Most recently, the Colorado State University, (CSU, 2013) updated the surface water and groundwater hydrology. Surficial Geology Figure A2 shows 1:24,000 scale surficial geology prepared by the Colorado Geological Survey (Lindsey and Others, 2020). The alluvium within the study areas consists of sand and gravel alluvial deposits (geologic map symbols Qal -- Qa3 based on their age). Wind blow dune sand and loess (fine silt and sand) deposits (Qe) are in contact, and sometimes overlay, the floodplain. alluvium. Collectively, multiple terrace levels of unconsolidated sediment occur over bedrock. The bedrock surface resembles a paleochannels eroded into the surface approximately 10,000 years ago by the SPR and Lone Tree Creek prior to alluvial deposition. Well Depth Ogilvy River Farm Pit Borings Boring Depth (ft) Bedrock Elev (ft msl) 8-1 82.5 4525.74 B-2 67.0 w 4537.80 B-3 4547.00 60.0 B-4 w 83.0 4512.95 B-5 63.0 4530.47 B-6 49.0 4547.35 B-7 68.0 4536.81 i B-8 69.0 4532.78 B-9 55.0 4544.65 B-10 70.0 4523.41 Figure A2 (back of report) shows the reported well depths from 205 wells within the study area. Well depths range from 14 to 185 ft and average 65 ft. The observed depth to bedrock from 59 wells ranges from 26 to 164 ft and averages 71 feet, similar to the average well depth. To the left, the reported depth to bedrock at site range from 49 to 83 feet (Cesare, 2023). Bedrock Elevation Contours Figure A3 shows combined elevation contours of the top of bedrock digitized from Robson and Others (2000) on the west side and Hurr and Scheider, 1972 on the east side. Although the Robson contours match the SEO well data, we did modify the contours slightly to consider the Ogilvy monitoring wells (Table A2) and boring data (above). The map shows that the SPR paleochannel extends from the west to southeast with the Lone Tree Creek paleochannel converging from the north. Figure A3a zooms in on the ORFP site where the bedrock elevation drops 20-30 feet from north to south across the pit. This is unusual considering the generally gentler bedrock topography (referred by geologists as "structure") on either side of the site, and the applicant should take special care keying into bedrock when installing the slurry wall. Water Level Contours We created a water table map (Figure A4) that reflects average water table conditions using available data from registered SEO wells (Table Al) and ORFP monitoring wells measured on July 7, 2023 (Table A2). The reported static water level depths for 153 wells ranges from 2 to 55 feet and averages 23 ft (Table Al). We calculated the water table elevations by subtracting the reported depth to water from well site elevations interpreted from US Geological Survey 10m Digital Elevation Model (DEM) data sets and then contoured the resulting data set. The pit McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennls@mcgranewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 7 of 32 monitoring well elevations were surveyed by J&T. The water table elevation at the west end of the model along the SPR is approximately 4593 ft (msl). The water table gradient falls approximately 16 feet to the east end of the model (4577 ft (msl). The water table map was imported into the model and used to evaluate modeled contours. Groundwater flows perpendicular to the water level contours. The SPR shows a strongly gaining character with a high percentage of the groundwater inflow coming from the north, likely from the Lone Tree Creek paleochannel. Water Level Fluctuations The water table within the South Platte and Poudre River alluvial aquifers fluctuates 0 to 7 feet in response to seasonal recharge and agricultural pumping and return flows (Arnold and Others, 2010, p. 12 and Barkmann and Others, 2014). The water table is highest in the summer and early fall, likely as the result of increased aquifer recharge from irrigation, seepage from unlined ditches, and greater precipitation. J&T began monthly monitoring of the four ORFP monitoring wells in July 2023 so the data set is still incomplete. However, over the past three years, J&T has been monitoring seasonal fluctuations in the vicinity of the the Derr and DPG pits located approximately 4 miles west of the pit. There, seasonal water level fluctuations range from 0 to 3 feet which we believe is likely characteristic of this location. Ogilvy Ditch and New Cache La Poudre Ditch Recharge We ignored the presence of the New Cache la Poudre ditch and Ogilvy ditch laterals that flow from west to east north of. the ORFP. When flowing, ditch leakage likely causes a seasonal rise in the water table. We do not know whether there is simply a vertical seepage gradient that won't be affected by the lined pit, or whether mounding could reduce ditch seepage or potentially mitigate mounding by absorbing the rise in the water table as a gain to the ditch. For this groundwater modeling exercise, we ignored the ditch's potentially mitigating effects to provide a worst -case simulation for evaluating impacts to well users. Saturated Aquifer Thickness We calculated the aquifer saturated thickness as the difference between the water table (Figure A4) and the top of bedrock (Figure A3). Figure AS shows how the saturated thickness is thickest (50 to 83 feet) within the SPR paleochannel and is 40 to 60 feet thick in the Lone Tree Creek paleochannel. To the northeast and southeast near the edge of the alluvial aquifer, the saturated aquifer thickness thins to 20 to 40 feet. Well Yield Well yield is proportional to the aquifer saturated thickness. We plotted reported well yields extracted from the State's well database on Figure A6. Well yields from 119 wells range from 4 gpm (domestic well) to 2,500 gpm for irrigation. Well yields from domestic wells are less than 1.5 gpm. Agricultural wells (yellow squares) are scattered throughout the study area and typically range from 250 (yellow squares) to over 1000 gpm. The most productive permitted wells in excess of 1000 gpm (colored blue) are for irrigation and commercial uses. They are mostly located outside the model area, with the exception of one irrigation well (permit no. 6383-R), yielding 1200 gpm, located approximately 1,000 feet northeast of the pit. Aquifer Transmissivity McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: (tennis@mcgranewiater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 8 of 32 Figure A7 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 A5). By selecting a constant hydraulic conductivity value of 650 ft/day for the model, the computed transmissivity (gpd/ft) within the SPR and Lone Tree Creek paleochannels ranges from 30,000 to 54,000 which is consistent with SPDSS properties (CDM, 2006, Fig. 7a). On the edges of the model, and alluvial aquifer, the transmissivity drops below 30,000 gpd/ft. MODELING We used the Groundwater Vistas (GV) pre and post processor (version 8.30 Build 87, Rumbaugh, Environmental Solutions, Inc.) to construct and run a MODFLOW2000 (Harbaugh et al, 2000) model, and display the results. We then exported head and drawdown values to create water level and mounding maps and cell -by -cell flow terms to evaluate the model run mass balances. We utilized ESRI ArcView GIS software to process and prepare report figures. The model area is 13,200 feet from north to south and 15,600 feet wide (west to east) centered on the ORFP. The model consists of one layer, 66 rows and 78 columns using 200 -foot square model cells. Model Boundary Conditions The model boundaries include the model sides, top and bottom. The bottom bedrock elevation surface (Figure A4) was digitized in ESRI GIS software and imported into the model on a 200 ft grid. The four model sides are all located within the SPR alluvial aquifer and consist of MODFLOW Constant Head (CH) cells that establish a fixed gradient. We assigned CH elevations around the model perimeter by importing the digitized water table surface contour map (Figure A3) and then assigning CH elevations by interpolating between contours. Approximately one quarter of the perimeter model cells were assigned CH elevations where water flows into or out of the model. The highest groundwater elevation (4623 ft) is in the north- central portion of the model east of Lone Tree Creek, and the lowest elevation (4576 ft) is in the southeast corner. Therefore, the water table drops 53 feet from north to southeast. The model boundaries are far enough away from the pit so that the mounding does not significantly affect alluvial aquifer inflows and outflows. MODFLOW "River" cell stage elevations were assigned to all model cells along the SPR, Poudre River, and Lone Tree Creek. River cell elevations were assigned at 10 -ft water table contour intervals and interpolated by GWV in between. The western -most Poudre and South Platte River cells were assigned an elevation of 4594 ft (msl). The easternmost South Platte River cell was assigned an elevation of 4577 ft (msl). Therefore, the overall SPR drop in the model is approximately 17 feet. We modeled the aquifer's connection to the river using the MODFLOW "River" package which uses a streambed conductance term (COND) to calculated flow from one to the other in proportion. to the vertical hydraulic gradient. A high level of connection between the rivers and aquifer mitigates impacts by allowing water to freely flow between the river and aquifer. 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 determined the streambed permeability within a mile of ORFP McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1 247; email: (lernlls@lncgranewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 9 of 32 pit (site SC -08) to have a vertical hydraulic conductivity (Ksb) of 137 ft/day. We believe this rate is too close to our horizontal K (Kh) value of 650 ft/day. Tests conducted in 2009 by Leonard Rice Engineers, Inc. (Denver, Co.) in Twn, 2N, Rng. 66W, Sec. 18, arrived at a Ksb value of 36 ft/day (Miller, 2009). Therefore, to be conservative, we used a Ksb of 36 ft/day to reduce the connection to the river. This assumption creates a conservative "worst case" scenario for evaluating pit impacts. Using Google Earth imagery taken in October 2017 (representing low flow conditions), we measured the SPR widths 1000 feet upstream of the pit (147 ft), near the pit center (177 ft) and 1000 feet downstream (154 ft), averaging 159 feet. This resulted in a COND value of 1,147,200 ft^2/day in the model as shown in the table below. MODFLOW River Cell Parameters *Width (ft) Length (ft) Conductance Streambed Ada „_11 Ksb/m COND ft^ 2 /da Y� 200 1147200 36 159 The flow from the river in or out of river cells is determined by multiplying COND by the head difference in the river and the underlying model cell. With such a high COND value, water freely flows between the river and the aquifer. Model Results We conducted two model runs to evaluate groundwater level changes caused by the Ogilvy River Farm Pit slurry wall. Pre-sluny Wall Run The initial run pre -slurry wall run (Ogilvy_SS7) represents the pre -slurry wall conditions. Figure A8 shows the modeled water table contours (blue) compared to "target" contours (white). In this run the pit cells are "on" which allows water to flow through them. Both contours cross surface water at similar locations. However, the modeled contours are visually about 5-10 feet higher than the observed contours except in the southeast model area where they are slightly lower. Observed vs. Modeled Heads and Residuals We compared the observed well water levels and their corresponding modeled cell values for the steady state pre pit model run (Ogilvy SS7) in the figure below and the calibration statistics are included in the table to the right. McC ane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: (lennis@mcgranewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 4640 E 4630 c 4620 00 4610 cu H 4590 CU au O 2 4600 4580 4570 4560 4550 • RA2 =1 S. • r1 # ;: rib •_ fir- D.6x + 13, #i• o •1M,: 1� 11. 01 • !foist, • MK' 0.6229 S 4550 4560 4570 4580 4590 4600 1(10 4620 4630 GPIr Observed Water Table Elevation ( ft.msl) Residual Mean Residual Standard Dev, Absolute Residual Mean Residual Sum of Squares RMS Error Minimum Residual Maximum Residual Range of Observations Scaled Res. Std. Devi Scaled Abs. Mean Scaled RMS Number of Observations Page 10 of 32 is -1.78 - 9.01 - 6.61 -6.91 e+03 -9.18 -33.51 it 25.61 -66.50 e 0.131 t- 0.096 tt 0.134 82 If there were perfect match between observed and modeled well locations, the data would plot on a straight line though the origin with a perfect RA2 = 1 relationship. The best fit dashed line shown above has an RA2 of 0.62 due to the generally higher modeled levels. The GWV8 program calculated residuals as the difference between observed and the modeled values (the modeled value is determined based on the observed point location within the modeled cell). The residual distribution is shown on Figure A8. Similar to the contour lines, the modeled values are mostly higher than the observed values (more negative than positive values). Most of the positive residuals (where modeled values are lower than observed values) are located exist east of the pit which may be due to seasonal recharge from the Ogilvy ditch that was not modeled. The Root Mean Squared (RMS) error (9.18 ft) is the square of the difference between the observed and modeled values (aka "residual"). We feel this value is reasonable considering the data used covers several decades and includes seasonal fluctuations not only by Ogilvy ditch recharge but also due to seasonal well pumping, river fluctuations and agricultural return flows. We did not spend a considerable time trying to obtain a better head match because the modeled changes (Figure A9) are insensitive to aquifer parameters as discussed below in "Model Sensitivity" section. Mass Balance Table A3 shows the model mass balance results (Run: Ogilvy_SS7) which shows the inflow and outflow components. Inflow components include alluvial aquifer subflow (22.21 cfs) and River leakage (30.81 cfs), totaling 53.02 cfs. Outflow components include aquifer subflow (10.09 cfs) and river gains (-42.93 cfs) also totaling 53.02 cfs. The SPR river gains approximately 12.12 cfs (42.93-20.81 cfs) over approximately four miles of stream which averages approximately 3 cfs per mile. The mass balance error is 0.01% based on the difference between inflows and outflows. This low RMS and low model error support our conclusion that the model has a high level of accuracy. Mc%ane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 11 of 32 Table A3 also shows the model mass balance result (Run: Ogilvy_SS8) which shows the inflow and outflow components when the pit cells are turned off. The total river gain is 11.39 cfs which is 0.73 cfs less (12.12 —11.39) than the pre -pit run. Therefore, the pit's effect on surface water at this location is minimal and the stream will likely gain 0.73 cfs more downgradient from the model area therefore creating no net impact on surface water. Water Level Changes Caused by the ORFP Slimy Wall In run <Ogilvy_SS8>, we turned the pit model cells off and used the output heads from the pre -pit run <Ogilvy_SS7> initial run as starting heads. Figure A9 is the contoured "difference" in model output heads between the post -pit run minus pre -pit run determined using GIS grid -math techniques. Positive values on the north side of the pit reflect mounding and negative values on the south side, between the pit and the SPR, reflects lower water levels in the "shadow" area. The maximum mounding on the upstream side is approximately + 4 ft and the maximum shadowing is approximately -1.5 feet. Mounding greater than 0.5 feet extends approximately a mile to the north and a half mile to the east and west, whereas the shadow area is tightly constrained by the SPR. Results Summary There are eleven registered domestic wells and two monitoring wells located within modeled change between 1 and 3 ft as summarized in Table 1. Two of the wells are monitoring wells which are not a concern. Table 1 Water Level Changes > 1.0 ft in Registered Wells Permit Applicant Twn Rng Sec Q160 O40 Use Modeled Change (+/• ft) Well depth Yield (geld Water Level bgl} (ft Permit Llnk • SITZMAN, JOHN 64 W 5 NE SW Domestic 5 45 ps: dwr.szate.to.t. 11749 5 N +1-2 ft. 63 Tools/WeliPe rinits/9 126287 CABRERA OROZCO, MARTIN ' 5 N 64 W 4 NW SW Domestic +1-2 ft. 70 -• httPs;//thor.state.ca.us{ ]'QQis/We9lRerrnit hit s,//rlkarr'state / 066. co. si 126291 AMES, DELMAR 5 N 64 W I 4 NW SW Domestic +1-2 ft. 75 15 36 Tools/WeilP'ermitsJ9Q66 127910 ACHZIGER CHARLES L & LORENE 5 N 64 W S SE NW Domestic +1-2 ft. 70 -• ,_ htt �' /. wr recto .0 ' Te l WellPermil 9 127911 CARLSEN, WILLIAM 5 N 64 W 4 SW NW Domestic +1-2 ft. 70 -- -- htt s: dwrr. state.to tis/ Tools +h►ellP+ermlts 906 312497 PDC ENERGY INC (OLSON, KARENIThoisiWeilPerittitsi3690 5 N 64 W 5 NW SE Monitoring +1-2 ft. 48 _. 39.25 htt dwr.state.tows 312498 PDC ENERGY KARENI INC (OLSON, 5 N 64 W 5 NW SE Monitoring +1-2 ft. 48 -• 37.9 httos:I/du r.state.�coaus/' Tc_tl /WejlPenpk 6j Q 126291-A SHORT RODGER & BETH 5 N 64 W 4 NW SW Domestic +1-2 ft. 74 15 36 htips://dwr.state.co.t.i te.co.0 / Tools/WellPermats/1027 13379-R 5 N SE NE Irrigation >2 ft, 900 47 htt�s'r'�'d°'°irstate.co.us" ZEHNDER LOANN STEVEN A & 64 W 5 90 Tools/WeliPerni is/9061 13968-R CHURCH OF JESUS CHRIST 5 N 64 W 5 NE SW Irrigation +1-2 ft. 86 n 39 htt sx//cl ur,state°c .us ` T+ s l5/3+'all errtlts/9 i ACHZIGER CHARLES & NIA131F. 5 N SW SW htt : dwr,state.co,us 6383-R Irrigation +1-2 ft. 95 1200 55 64 W 4 Tools/WellPer<rnits/9OS9 Model Sensitivity The modeled effects of the ORFP are insensitive to the hydraulic conductivity (K) of the aquifer. A decrease in K causes a proportional decrease in model inflows, but the mounding and shadowing effect remains the same due to the lower permeability connection to the SPR. The opposite relationship occurs if the aquifer K is increased which results in additional aquifer inflow but the mound remains the same due to the higher permeability connection with the SPR. Therefore, we did not spend excessive time trying to match modeled verses observed heads by changing K values. The model results are very sensitive to the presence of the SPR, but there is no realistic chance that the river is going away any time soon. Model results are also insensitive to streambed leakance. Even using a conservatively low Ksb value of 36 ft/day, the SPR is still wide enough and the aquifer is permeable enough to rapidly respond to changes in groundwater levels caused McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, Co 80540 • Phone: (303) 917-1247; email: dennis@mcgrauewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 12 of 32 by the proposed mine slurry wall. We also do not believe the model results are sensitive to the existence of Lone Tree Creek because the shape of the mounding appears symmetrical west and east of the area of influence shown on Figure A9. Model Uncertainty 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 1 Om 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. Our modeled predictions (Figure A9) 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. CONCLUSIONS AND RECOMMENDATIONS We do not believe the predicted rise in the water table of up to 4 feet on the upgradient side of the pit will be noticeable to the homeowners listed in Table Al due because the depth to water, on average, is greater than 36 feet for the wells listed. For those wells without reported water levels, it is likely that their water level depths are similar. We ignored the presence of the Ogilvy and New Cache La Poudre ditches that flows west to east immediately north of the Ogilvy pit. When flow is present, leakage from the ditches likely creates a seasonal rise. We do not know whether the ditches are hydraulically connected to the water table when it is flowing or whether there is simply a vertical seepage gradient that won't change with or without the lined pit. If the ditches are hydraulically connected to the aquifer or become so once the pit is lined, they could potentially "absorb" upgradient mounding and mitigate impacts. We therefore ignored the ditch's effects, so our analysis provides a worst -case simulation for well users. We recommend that the applicant: 1. Confirm the location of the SEO wells show on Figure A9; 2. Continue to monitor the recently installed mine site monitoring wells; 3. Evaluate seasonal water table fluctuations prior to and after pit construction; and 4. Evaluate the correlation between canal recharge and increased water levels to differentiate between season recharge and pit impacts. SOURCES Arnold, L.R., Mlandinich, C.S., Langer, W.H., and Daniels, J.S., 2010. Land -Use Analysis and Simulated Effects of Land Use Change and Aggregate Mining on Groundwater Flow in the South Platte River Valley, Brighton to Fort Lupton, Colorado. US Geological Survey Scientific Investigations Report 2010-5019. McCune Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: deniiis@mcgranewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 13 of 32 Barkmann, Peter E., Horn, Andy, Moore, Annette, Pike, Jeremy, and Curtiss, William. 2014. GiicrestiLaSalle 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. CDM-Smith, June 9, 2006. SPDSS Phase 3. Task 34: treambed Conductance Technical Memorandum. Colorado Division of Water Resources (CDWR), June, 2023. Well permit website search: h.t t p ://www.(1 wr. 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. Cesare, Inc:, July 7, 2023. Draft Boring Geologic Logs of Todd Bean Property. Project No. 22.3058. Provided via email from J.C. York, J&T Consulting, Inc. Colorado State University (CSU), December, 31, 2013. FIB 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. https://www.groundwatermodels.com/ Haneberg, August, 2006. Effects of Digital Elevation Model Errors on Spatially Distributed Seismic Sloe _ Stability Calculations: An Exam le (i'om Seattle, 'NI a, Environmental & Engineering Geoscience, Vol. XII, no. 3, August, 2006, pp. 247-260. Hurr, R. Theodore, Schneider, Paul A., and Others, 1972. I_ lydr-ogeoloizic 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. Lindey, Kassandra 0., and Palkovic, Martin J. 2020. Geology Map of the Kersey Quadrangle, Weld County, Colorado. Colorado Geological Survey and Colorado School of Mines Open -File Report 20-06 Lindsay, D.A., Langer, W.H., and Knepper, D.H., 2005. Stratiraphy, Litholo4,y. and Sedimentary Features of Quaternary Deposits _oftie South Platte River and Some of its Tributaries East of the Front Range, Colorado. U.S. Geological Survey Professional Paper 1705. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: (lennis@rncg,ranewTater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 14 of 32 Lindsey, D. A., Langer, W. H., and Shary, J. F., 1998, Gravel deposits of the South Platte River valley north of Deliver. 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. McGrane Water Engineering, llc. May 31, 2023. Bernhardt Pit — Groundwater Evaluation, a letter report prepared for Mr. JC York, J&T Consulting, Inc., Ft. Lupton, Co. McGrane Water Engineering, lie. November 19, 2022. Fair Meadows Pit — Groundwater Evaluation, a letter report prepared for Mr. JC York, J&T Consulting, Inc., Ft. Lupton, Co. McGrane Water Engineering, llc. January, 31 2020. Derr Pit —1_-hydrologic Assessment and Computer Modeling, a letter report prepared for Mr. JC York, J&T Consulting, Inc., Ft. Lupton, Co. McGrane Water Engineering, llc. December 2, 2019. Derr Pit Private Well Evaluation, a letter report prepared for Mr. JC York, J&T Consulting, Inc., Ft. Lupton, Co. McGrane Water Engineering, llc. July 13, 2015. Loloff Pit — Slurry Wall Assessment, a letter report prepared for Mr. JC York, J&T Consulting, Inc., Ft. Lupton, Co. 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-Gi [crest Area, Colorado. USGS Hydroologic Investigations Atlas HA -746-C. Sheet 2 of 5 — Altititude and Configuration of the Bedrock Surface. Smith, Rex 0., 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, TALC 1669 Apple Valley Rd. • Lyons, CO 80540 + Phone: (303) 917-1247; email: dennis@mcganewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 TABI.FS Table Al — SEO Well Permit Data (1 of 3) Page 15 of 32 Permit Num Applicant_Name COSPN X COSPN .Y Well Use DEM_ elev ft Well Depth (ft bgs) Depth Bedrock (ft bgs) to Bedrock Elev, (ft) Yield (gpm) SWL I (ft ' bgs) (ft) SWL Elev. 5-WCB '3184314 1351748 4724.8 40 4684.8 NA 8 4717 MONGOMERY, VIOLET 40 633-WCB BETZ, CARL 13189427 1362510 4732.2 132 32 300 9 4723 4700.2 ' 62457-DW FISCHER CONSTRUCTION 13179208 1346200 Dewatering 4738.0 32 NA NA NA NA NA 96112-VE BOH[ING. FATIMER 3190443 1362273 Domestic 4731.3 ,60 NA NA 15 ,18 4713 125566-A FARM BOY INC 3193791 1349232 Domestic 4755 2 59 NA NA NA NA NA 74711-A KAMMERZELL GENE 3191807 1362152 Domestic 4725.5 ;60 55 4670.5 30 20 4706 80345-A KAMMERZELL, GENE 3191831 1361802 Domestic 4707.2 58 57 .4650,2 15 20 4687 184198 MARTINDALEJOHN & DELORES 3184822 1.1343796 Domestic 4764.0 60 58 4706.0 15 20 4744 204050 JENKINS MARK & KAREN 3185519 1348707 Domestic 4749.1 45 41 4708.1 - 15 19__ 4730 206387 3186853 1346714 Domestic 4760.2 52 50 4710,2 15 23 4737 FRANK, ALLAN 208693 3186895 1345028 Domestic 4764.6 51 50 4714.6 15 23 4742 BOOS, DON 225934 KNUTSON, RANDALL C 3.1946.20 1355466 Domestic 4739.4 50 45 4694.4 15 29 4710 21288-A DANIELS, MARK J. 3183501 1346651 Domestic 4761.4 54 NA NA 15 29 4732 NA NA NA 232159 HENDERSON CONVENIENCE, LLC 3189642 1352388 Domestic 4748.1 71 NA NA 270080 ARIAS, MICHAELL 3184442 1346854 Domestic 4761.5 60 50 4711.5 15 23 4738 275938 HS LAND & CATTLE LLC 3189490 1352792 Domestic 4750.1 59 58 4692.1 NA NA NA 279370 1357432 4712.5 45 35 4677.5 15 6 4706 Domestic JANECZKO MICHAEL :3189246 OWENS, TOMM 13197132 279438 1355419 Domestic 4741,0 50 NA NA 15 26 4715 NELSON CHARLES & PHYLLIS C 13195629 1355410 '4742.5 14 29 4714 279437 Domestic NA NA NA 281801 MARTINDALE1 DELORES 3186894 1341029 Domestic 4772.5 72 69 4703.5 15 15 4757 282403 MARTINDALE, DELORES 3186852 1338648 Domestic 4776.6 52 NA NA NA NA NA 287458 LARA, REYMUNDO 3197578 1357305 Domestic 4738.5 75 _ NA NA NA NA NA 80 68 4772.4 4704.4 287838 VILLALOBOS, JOSE 3187288 1341014 Domestic 15 17 4755 299322 BOOS, DONALD C 3184363 1345660 Domestic 4764.0 60 NA NA NA NA ' NA 300729 EVANS, WILLIAM C. 3184502 1346194 Domestic 4762.4 55 52 4710.4 '15 14 4748 287458-A LARA, REYMUNDO 3197519 1357328 Domestic 4738.8 51 NA NA 23 25 4714 1123 CAW EQUITIES LLC (LEM BKE, ROB ''3195S 17 1351127 Domestic 4748.2 34 NA. NA 15 134 4714 1336 3191567 1347134 Domestic 4759.1 60 _ NA NA NA 20 4739 HANSEN, CASTOR 4933 BERNHARDT, BEN 3186255 1359035 Domestic 4740.4 NA 35 4705.4 NA NA NA 3180986 1355067 Domestic 4846.4 NA 4831 45 43 4803.4 5124 RUTT, ELMER 15 14539-R BOOS DONALD C & BARBARA 3186993 11343853 Domestic 4769,0 4709.0 NA 25 4744 60 60 17101 I NGERSOLL, LYLE 3189685 1341190 Domestic 4772.7 40 NA NA NA NA NA 17583 HILDENBRANDT P L MRS 1-3183718 1344593 Domestic 4766.8 148 NA NA NA NA NA 17919 KCB LLC 3199397 1355113 Domestic 4744.3 71 NA NA NA NA NA 21288 BAIER, JOHN H 3183700 1347234 Domestic 4755.7 38 NA NA NA NA NA 21774 HODGSO N, ALBERT 3194121 1359071 Domestic 4706.2 30 27 4679.2 NA NA NA 23014 BRECKON, HOWARD W 3191502 1351098 ' 4749.1 62 60 4689.1 15 28 4721 Domestic 51636 TITCHENELL SR, JAMES E. 3192458 1358491 Domestic 4711.5 34 32 46793 15 7 4705 53399 TUCKER SHELTON & ELOISE R 3192553 1359589 Domestic 4701.8 NA NA NA NA NA NA 74711 KAMMERZELLJR GEORGE 3191832 1362153 Domestic 4725,5 NA NA NA NA NA NA 80345 KAMMERZEL, GEORGE _ _13191831 1361802 Domestic 4707.2 NA NA NA NA NA NA 84422 FRITZLER, EDWARD J 3189675 1341241 Domestic 4772.9 77 NA NA 39 4734 8 • RICE HAROLD E & DORIS A 3187167 1338572 Domestic 4777.2 NA NA NA 15 4751 26 WADDLE, RANDELL 3192134 1345135 Domestic 4764,9 NA NA NA NA 'NA NA 155183-A WADDLE, RANDELL 3192144 1345136 Domestic 4764.9 58 57 4707.9 15 31 4734 155687 BERNHARDT, HERBERT 3187538 1357432 Domestic 4715.6 NA NA NA NA NA NA 155687-A BERNHARDT, HERBERT 3187538 1357432 Domestic 4715.6 25 19 4696.6 12 9 4707 169399 SCOTTDALE RANCH 3181539 1344105 Domestic 4766.3 54 NA NA _ NA NA NA 169399-A PTASNIK MICHAELJ &JOY 3181539 1344095 Domestic 4766.3 54 52 4714.3 7 27 4739 17919-A HAREN THOMAS & CYNTHIA 3199325 1354611 Domestic 4748.3 69 NA NA NA NA NA 185466 EATON CATTLE CO 3189778 1350512 Domestic 4752.5 31 NA NA NA NA NA 185466-A 3189498 1350501 4754.5 57 4697.5 15 30 4725 EATON CATTLE CO Domestic 60 3187081 1349373 4751.8 Domestic 187425 GUTFELDER, BEN L NA NA NA NA NA NA 187425-A GUTFELDER, BETTY A. 3187077 1349373 Domestic 4751.,8 55 51 4700,8 28 4724 15 187426 :GUTFELDER, BEN L _ 3189434 1348160 Domestic 47603 NA NA NA NA NA NA 1348160 4760.3 187426-A MORAN) TERESA 3189430 Domestic 60 59 4701,3 31 4729 216684-A ; KARBOWSKI RICHARD S. 3191992 .1352433 Domestic .4748.7 60 58 4690.7 15 34 4715 pl 225280 ! GURLEY, GORDON 3187424 ' 1343693 Domestic 4766.9 40 NA NA NA NA NA 225280-A GURLEY, GORDON 13187424 1343673 Domestic 4766.9 60 59 4707.9 15 32 4735 McGrane Water Engineering, LLC 1669 Apple Valley Rd. Lyons, CO 80540 • Phone: (303) 917-1247; email: denms@mcgranesvater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Table Al SEO Well Permit Data (2 of 3 Page 16 of 32 Permit Num Applicant,�Name COSPN.X 3186837 CCJSPN Y 1338558 Well Use Irrigation DEM elev ft� 4778 Well Depth (ft bgs) Depth Bedrock NA to Bedrock Elev. (ft) NA Yield (gpm) (ft bgsl bgs} (ft} SWL (ft NA SWL Elev. NA I NA 6371-R BESKAS NG TRUST NA 6372-R MARTINDALE, DALE, DELORES O 3186397 1339207 Irrigation 4774 55 55 4719 915 20 4754 6373-R MARTINDALE, DELORES O 3186397 v1339207 Irrigation 90 90 4684 1119 25 4749 4774 6562-F RED TI ERRA EQUITIES, L.L.C. (LEM 3195492 1353763 'irrigation 4748 58 NA NA NA 28 4720 7025-R BRIGGS, CHARLIE 3186407 1337899 Irrigation 4777 73 NA NA 800 17 4760 7026-R BRIGGS, CHARLIE 13186407 1337899 Irrigation 4777 4 NA NA NA NA NA NA 7164-R I3187635 1347125 Irrigation 4756 54 NA NA NA r NA NA HS LAND & CATTLE LLC 7165-R 3188926 ;1347128 Irrigation 4758 57 NA NA 15 4743 NA 'HS LAND & CATTLE LLC 7643-F 'MICHEL, REUBEN 3192770 1357687 Irrigation 4712 27 25 4687 NA NA NA 8302-R _ KAM M ERZELL, GENE 3190651 11361021 Irrigation 4709 48 47 _ 4662 1800 12 4697 8818-F 3191462 1353726 Irrigation 4744 63 60 4684 1119 NA NA HS LAND & CATTLE LLC 10044-R 3191482 1352419 Irrigation 4747 75 NA NA i NA NA NA HS LAND & CATTLE LLC 10045-R 3190162 1352414 Irrigation 4746 70 NA NA 800 18 4728 HS LAND & CATTLE LLC 10222-R UNITED WATER & SANITATION DI 3195480 1355076 Irrigation 4744 50 NA NA _ ' NA NA NA 10223-R UNITED WATER & SANITATION DI' 3195480 1355076 Irrigation 4744 64 NA NA NA NA NA 10449-R EHRLICH FEED LOTS INC 3184269 r 1360036 Irrigation 4750 41 4715 280 13 4737 35 10682-R CULLOR, RACHEL F 3189000 1341842 Irrigation 4768 97 NA NA NA - 22 4746 107464 PTASN I K MICHAELJ & JOY W 3183718 1344593 Irrigation 4767 65 v NA NA 1300 20 4747 ' r 10747-R PTASNIK MICHAEL) &JOY W 3183718 1344593 Irrigation 4767 68 NA NA 1200 20 4747 10989-R WIEDEMAN, TERRY 3192913 1345820 Irrigation 4763 96 NA NA NA NA NA 110244 MARTINDALE JOHN A & DELORES 3187710 )339187 Irrigation 4774 60 NA NA NA 15 4759 11113-R 1348448 4757 60 NA NA 13 20 4737 3188903 Irrigation HS LAND & CATTLE LLC 11114-R HS LAND & CATTLE LLC 3188903 '1348448 Irrigation 4757 58 NA NA 13 20 4737 114934 OSTER, CHRIS C 3182404 11342014 Irrigation 4772 60 NA NA NA NA NA 11494-R PTASNIK MICHAELJ & JOY W 3182404 ' 1342014 Irrigation 4772 60 NA NA NA NA NA 11684-R HILL, VICTOR 3194180 1349792 Irrigation 4749 NA NA NA NA 10 4739 12091-F CAW EQUITIES LLC (LEMBKE, ROB; .3194878 1349171 Irrigation 4755 68 NA NA � NA 30 4725 124614 SCHM I DT ROY A & M ELVI N C & C 3192800 1355046 Irrigation 4739 48 NA NA NA 24 4715 12462-R SCHM I DT ROY A & M ELVI N C & C 3192800 1355046 Irrigation 4739 49 NA NA NA NA NA 13042-R NESOM, ALBERT 3200717 1355124 Irrigation 4748 NA NA NA 33 4715 80 130434 NESOM, ALBERT 3200717 1355124 Irrigation 4748 80 NA NA 33 4715 NA 4769 13626-R PTASNIK, MICHAELJ 3183739 1341958 Irrigation 60 NA NA NA NA NA 13640-F RED TI ERRA EQUITIES, L.L.C. claVII3194891 1351768 Irrigation 4754 63 NA NA NA NA NA 13659-R CENTRAL COLORADO WATER CON 3190246 1347130 irrigation 47S9 NA NA NA 900 20 4739 13660-R CENTRAL COLORADO WATER CON 3191567 1347134 Irrigation 4759 NA NA NA NA NA NA Irrigation 13661-R HANSEN., CASTOR 3190246 1347130 4759 47 NA NA 500 20 4739 136884 RED TI ERRA EQUITIES, L. LC. (LEM j.3192832 1352427 Irrigation 4749 NA NA NA NA NA NA 13690-R RED TIERRA EQUITIES, L.L.C. (LEM 13194323 1351777 Irrigation 4745 63 NA NA 1050 34 4711 13701-F BERNHARDT, HERBERT B 3187341 1355674 Irrigation 4716 35 NA NA t NA 15 4701 13703-R PHELPS WILLIAM E& DOROTHY 3187589 1351085 Irrigation 4723 18 NA NA 400 4 4719 140264 UNITED WATER &SANITATION DI 3187401 1349066 Irrigation 4749 66 4683 1000 24 4725 60 14027-R UNITED WATER & SANITATION DI 3187029 1349067 Irritation I 4751 60 NA NA 800 20 4731 14028-R UNITED WATER & SANITATION DI' 3192017 1349083 Irrigation 4756 60 NA NA 800 20 4736 14040-R 3184332 1347126 4762 50 49 4713 700 31 4731 r Irrigation I LITTLE PLATTE FARM LLC (LADD, JE 14041-8 FRANK, JAN ICE 3185020 1347190 Irrigation 4757 60 NA NA 800 20 4737 140424 FRANK, JANICE 3186685 1346496 Irrigation 4761 60 NA NA 900 NA ' NA 14043-R PTASNIK MICHAELJ &JOY 3181066 1343 358 Irrigation 4765 60 NA NA NA 20 4745 14049-R MACLENNAN, STEPHANIE 3185011 1348487 Irrigation 4730 60 NA NA 800 15 4715 140504 GILCREST RESERVOIR COMPANY 3179737 .1344679 Irrigation 4744 60 NA NA NA 20 4724 Irrigation 145234 PHELPS INVESTMENT CO 3188768 1357661 4712 - 40 NA NA 1200 6 4706 14524-R JAN ECZKO, MICHAEL A. 3189032 1356541 Irrigation 4714 40 t NA NA 1200 6 4708 150944 MICHEL, REUBEN 3192770 1357687 Irrigation 4712 27 25 4687 NA 7 4705 35 _ 15499-F BERNHARDT, JACOB 3187683 1359814 Irrigation 4740 35 4705 250 NA NA 15656-R SCHM I DT ROY A & M ELVI N C & C 3192800 1355046 I rrjation 4739 50 NA NA 600 29 4710 19924-T EPPINGER LINDA KAY 3191522 1349778 irrigation 4753 60 NA i NA 950 18 4735 19924-V EPPINGER LINDA KAY 3190201 1349774 Irrigation 4751 62 NA NA NA NA NA 19924 -T -R. EPPINGER LINDA KAY 3192173 _ 1349187 Irrigation 4758 60 50 4708 950 18 4740 19924-U EPPINGER LINDA KAY 3190201 1349774 'Irrigation 4751 62 NA NA 1000 25 4726 19924-V-* EPPINGER LINDA KAY 3189541 1350456 Irrigation 4753 58 60 4693 1000 30 4723 McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dernlis@rcgranewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Table Al SE() Well Permit Data (3 of 3 Page 17 of 32 Permit Num Applicant..Name COSPN X COSPN Y Well Use DEM _ slay ft Well Depth (ft bgs) Depth to Bedrock (ft bgs) Bedrock Elev. (ft) Yield (gpm) SWL (ft bgs) SWL Elev. eft 19924-W EPPINGER LINDA KAY 3191522 1349778 Irrigation 4753 1 62 NA NA 200 25 4728 19924-X 1351085 Irrigation 4723 50 NA 10 4713 PHELPS, WILLIAM E 3187589 NA NA 19924-R PHELPS, WILLIAM E 13188861 1351089 Irrigation 4729 55 NA NA NA NA NA 20461-R HODGSON, ALBERT '3192754 1359074 Irrigation 4711 NA 30 4681 - NA NA NA 20461-T ' MCMILLEN F DEE '3192749 1359151 Irrigation 4712 30 NA NA NA NA NA 42519-F BERN HARDT, DAIRY :3184728 1351757 Irrigation 4726 NA NA NA NA NA NA 10682-R-1(CULLOR, RACHEL F 3189000 1341842 Irrigation 4768 92 NA j NA 1000 22 4746 14523-R-kEHRLICH FEEDLOT INC 3188430 ,1357278 Irrigation 4712 40 34 4678 1.200 6 4706 54-WCB HANSEN, CASTOR 3189633 ,1346469 Irrigation 4762 60 60 4702 900 NA NA 58-WCB KROSH & HANSEN 3188948 !1345807 Irrigation 4761 62 61 4700 900 24 4737 61-WCB 1346506 'Irrigation 4763 50 49 4714 NA 24 4739 HANSEN & KROGH 3184351 62-WCB HANSEN & PURSE 3179713 1347320 Irrigation 4731 62 61 4670 1200 24 4707 433-WCB .1343174 I Irrigation 4769 97 NA NA 850 18 4751 LINDEN, CARL 3190309 487-WCB LORENZ, FRED 3192800 1355046 Irrigation 4739 61 50 j 4689 400 25 4714 591-WCB RYAN, MARY 3191426 1356355 Irrigation 4712 34 34 ! 4678 1000 7 4705 634-WCB BERN HARDT, JACOB 3187483 1360432 Irrigation 4737 35 36 4701 250 I-19 4718 723-WCB HILDENBRANDT, PHILIP L 3183042 1345276 49 49 4714 1400 18 4745 Irrigation 4763 725-WCB GULFELDER, TONY 3191612 1344493 58 58 4708 1200 27 4739 Irrigation 4766 841-WCB MANN & GARRISON 3188786 1356341 Irrigation 4715 39 39 4676 1200 ; 6 4709 848-WCB MICHOL, REUBEN 3192770 1357687 Irrigation 4712 30 25 4687 1000 7 4705 904-WCB ''WHEELER, JESSIE M 3192913 1345820 Irrigation 4763 96 95 4668 2150 31 4732 955-WCB BISKAS, NICK 3186387 1340528 Irrigation 4772 NA NA NA NA NA NA 19084-MFI NORTH FRONT RNG WTR QUAL PI 3191567 1347134 Monitoring/I 4759 35 NA NA NA 19 4740 38034 -MN HALL-IRWIN, CONST 3183624 1357678 Monitoring/1 4790 19 NA NA NA NA NA 38036-MH HALL-IRWIN, CONSTRUCTION 3184917 1360404 Monitoring/! 4748 19 NA NA NA NA NA 42858 -MI- TPI PETROLEUM INC 3194146 1352425 Monitoring/ 4745 NA NA NA 21 4724 30 61795-MI-4GREAT WESTERN OPERATING COI 3187825 1361697 Monitoring/! 4734 24 NA NA NA NA NA 62197-MH PDC ENERGY INC (OLSON, KAREN) 3186447 1353760 Monitorin f! 4719 5 NA NA NA NA NA 63110 -ME PDC ENERGY INC (OLSON, KAREN) 3186422 1355068 Monitoring/ 4717 11 NA NA NA NA NA 63178-MEI 4 PDC ENERGY INC (OLSON, KAREN) _ 3185519 1354639 Monitoring/fa' 4718 11 NA NA NA NA NA 63185-MEI NOBLE ENERGY INC 3187448 1355141 Monitoring/' 4718 18 NA NA —NA NA NA 63296-MH J-2 CONTRACTING CO (LEONE, CH 3189653 1346609 Monitoring/'' 4762 65 NA NA NA NA NA 63802-MEI NOBLE ENERGY INC 3187423 1355160 rMonitoring4 NA NA NA NA NA 4718 15 64179-DW FISCHER CONSTRUCTION 3179874 .1344856 Monitoring/ 4750 37 NA NA NA 6 4744 316916 UNITED WATER AND SANITATION 3179683 ► 1344940 Monitoring/ 4744 43 57 4687 NA NA NA 316917 UNITED WATER AND SANITATION 3179633 1344936 Monitoring!' 4743 40 40 4703 NA NA NA 4703 316918 UNITED WATER AND SANITATION 3179797 1343604 Monitoring!! 4747 45 44 NA NA NA 316920 UNITED WATER AND SANITATION 3179766 1343608 Monitoring/ 4746 46 45 4701 NA NA NA 316921 UNITED WATER AND SANITATION 3178855 1344919 Monitoring/? 4743 37 37 4706 NA NA NA 316925 UNITED WATER AND SANITATION 3178644 1345631 Monitoring! 4741 33 33 4708 NA NA NA 316926 UNITED WATER AND SANITATION 3178636 1345679 Monitoring/ 4740 33 33 4707 NA NA NA 320417 LAFARGEHOLCIM /AGGREGATE IN 3191995 1361442 Monitoring/' 4716 30 NA NA NA 15 I 4701 324577 MONARCH MOUNTAIN MIN ERA 3191921 1355495 Monitoring/. 4726 50 40 4686 NA NA NA 324578 MONARCH MOUNTAIN MIN ERA 3190150 1355025 Monitoring/. 4718 40 NA NA NA NA NA 324579 MONARCH MOUNTAIN MIN ERA 3191641 1352476 Monitoring/t 4746 60 NA NA NA NA NA 324580 MONARCH MOUNTAIN MIN ERA 3187792 1350076 Monitoring,/) 4753 60 NA NA NA NA NA 11685 -R -R HILL, V 3194180 1349792 Municipal 4749 NA NA NA NA NA NA 3740 OWENS TOMM & DEBORAH 3196800 1355090 Stock 4742 61 NA NA NA 26 4716 538-WCB b ROOT, CHARLES 3191444 1355035 Stock 4727 31 30 4697 18 4709 5 Count , 224 i 200 92 109 134 Min 5 19 5 4 Max 98 95 2150 39 Average 54 50 ; 551 21 McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone; (303) 917-1247; email: deiulis@mcgTanewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 18 of 32 Table A2 - ORFP Monitoring Well Water Levels (7-7-23) and Bedrock Elevations Well ID Location CSP(x) k CSP(y) Elevation Top Well (ft) of Ground Elevation (ft) Depth Bedrock (ft)* p to Elevation of Bedrock (ft) Water Levels (July 7, 2023) Depth Ground (TOC-ft) Water to Depth Ground Water (TOG -ft) to Elevation of Ground Water (ft) JT MW -1 Northwest 3258025 1398607 , 4511.3 23.5 21.4 4588.9 4612.3 4610.3 99 JT MW -2 Northeast 3260349 1397829 4611.6 4609.3 62 4547.3 23.7 21.4 4587.9 JT MW -3 Southwest 3259129 1396974 4593.0 4591.0 81 4510.0 4.7 2.9 4588.3 JT MW -4 Southeast 32605191 1396485 4592.5 4590.7 91 4499.7 5.3 3.4 4587.2 Notes: * Per Cesare Geologic Logs Table A3- Mass Balance Pre -Pit Model Mass Balance (cfs) Run: Oglivy_SS7 Source IInflows I Outflows Aquifer 22.21 -10.09 River 30.81 -42.93 Total 53.02 -53.02 Error = 0.002% Post -Pit Model Mass Balance (cfs) Run: Oglivy_SS8 Source 1 Inflows Outflows 21.90 Aquifer ir -10.51 River 30.54 -41.93 Total 52.44 -52.44 Error =1 1 0.001% McCune Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dermis@mcganewater.com Ogilvy River Farm Pit (ORFP) Groundwater Evaluation September 2023 Page 19 of 32 FIGURES McCrane Water Engineering, LL) 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: deiuxis@tncgranewater.com LD a Ln 6N 65W 9230-F D 30 573-WCB i45I6-R-R, 00 267929 Op 12187-R U 11182-R. ce 12873 21961 280476 13380-R Figure A -la - North Well Permits Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m 63245-MH 64211-MH 6N 64W 325436 4 2009255 -AB Page 20 of 32 MAP EXTENT J 148 -RD 148 -RD -R 434-WCB [. I I_. U a s 458-WCB 7109 R 11566-R.R411568-R 56628-MH 53370-MH 58629-MH 65240 -F -R 65244•F 65240-F65243.FI 543 12312-R Map Legend Model Domain r J Study Area w-- Slurry Wall o Boring O Monitoring Well Ditch/Canal 11567 -R -R 150185 5534 O DWR Well - by use type* C) Domestic/Stock Irrigation Monitoring/Sampling 0 Municipal A Commercial/Industrial O Fire/Dewatering/Other/NA Date: September, 2023 Datum/Projection: NADS3/Colorado State Plane North, feet LID z 64217-MH 63967-MH LI 12898-R 241013 C 13187 -R041 3187 -R04 77 Figure A -lb - East Well Permits Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m Page 21 of 32 1 9P EXTENT 12549 1 59773-F 308564 12 87076-F 6823-RO12489 63997-MH 498-WCB 6N 64W 11219-F ii 12082- Map Legend Model Domain Study Area ---- Slurry Wall o Boring C Monitoring Well Ditch/Canal 64712-MH ❑7008-R DWR Well - by use type* o Domestic/Stock irrigation Monitoring/Sampling Municipal Commercial/Industrial Fire/Dewatering/Other/NA Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 5N 64W Page 22 of 32 20-87---Na 3 89 O 85 hissur(-Aq 04810 A414951 Wit O 6383-R u 10036-R t 14182-R 266185 MAP EXTENT\ Figure A-ic - South Well Permits Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m 8658-R ` 586 CB 38683, X11219 -F 66 1220 El658NVC 330536 62357 -14tH 6839-R 18754 64336-MH 64712-MH 7008-R Map Legend Model Domain Study Area — Slurry Vial o Boring O Monitoring Well Ditch/Canal DWR Well - by use type* 0 Domestic/Stock [:i Irrigation Monitoring/Sampling Municipal Commercial/Industrial Fire/ Dewateri ng/Other/N A A Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet ickayarjav i pi w trI L Uc 3 CD 3 z Ln 6N 65W 85654-F 3,1.386.= 313864 313861 MH 4406 II , )145 -RD / 45248 * 269263 45247-MH � 69262 / 67520-F R4962.R..R. t t1496iI - 443-WCB 14962-R 269261 45250-MH f its kik 01 269260 313862 313865 O13256 -R Figure A -id - West Well Permits Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m 145 -RD -R _ 335 -RD -R ,k 65247-F 11182-R ,`►It: 32613-A Map Legend 0 Model Domain j Study Area ---- Slurry Wall o Boring C Monitoring Well Ditch/Canal 6N 64W Page 23 of 32 53371 -MN 58629-MH X956-WCB 6422&MH 1-MH 279602 39901-M$ �., 89902-MEl 39535-MH 279600 *279603 ilS9051-F 1299A. 39535 -MK E HFGHL4ND CATCH LT 279599 481810MH DWR Well - by use type* 0 Domestic/Stock rrigation Monitoring/Sampling 0 Municipal Commercial/Industrial Fire/Dewatering/Other/NA Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 14254-R 11749 8225-R C-] csoif. Tanya tC1 lariat ettexcis alt) 6N 65W 6N 64W z up Map Legend _'65' Ai,s,,1 iL 103 61 8 A 58 ,. 57A w63 66 Figure A-2 Well Depth and Surficial Geology Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SP0SS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) C •700 A" Page 24 of 32 r Study Area Model Domain — Slurry Wall C) Boring Monitoring Well Ditch/Canal DWR Wells with Well Depth (ft bgs) A < 25' A 25' to 50' A 50'to75' A 75' to 100' A > 100' Geologic Unit (Modified from: OF -20_06) : �a 11 Qa1 - Alluvium (Upper Holocene) k .;1 Qa2 - Alluvium (Lower & Middle Holocene) I I Qa3 - Alluvium (Lower Holocene & Upper Pleistocene) Qe - Cohan Sediment Artificial Fill Water Body Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 6N 65W 6N 64W Page 25 of 32 S Jr F • 4598 W4581 - ',,: 4587 46' 45$ inotER L tla See Figure A -3a for zoomed -in (Model Domain) version of this map. Figure A-3 Bedrock Elevation Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) * Only those wells with depth to bedrock recorded in the lithology log are shown. Points are labeled with bedrock elevation. A Bedrock elevation contours were revised from Robson et at (2000) west of Range 64W and Hurr and Schneider (1972) east of Range 65W (per SPDSS alluvial aquifer configuration data sources). 4557 439 Map Legend r - _. - Study Area IMMO O a • Model Domain Slurry Wall Boring Monitoring Well DWR Well* r Bedrock Elevation Contour^ Ditch/Canal Geologic Unit (Modified from: OF -20_06) Qal - Alluvium (Upper Holocene) Qa2 - Alluvium (Lower & Middle Holocene) Qa3 - Alluvium (Lower Holocene & Upper Pleistocene) Qe - Eolian Sediment Artificial Fill Water Body Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 6N65V 6N 64W Page 26 of 32 Ln ID z ID Ln ID Lrl <4510 *Only those wells with depth to bedrock recorded in the lithology log are shown. Points are labeled with bedrock elevation. A Bedrock elevation contours were revised from Robson et al. (2000) west of Range 64W and Hurr and Schneider (1972) east of Range 6SW (per SPDSS alluvial aquifer configuration data sources). Figure A -3a Bedrock Elevation (Model Domain) Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) Map Legend r J Study Area 0 Model Domain Slurry Wall Boring O Monitoring Well • DWR Well* as Bedrock Elevation Contour"' Ditch/Canal Geologic Unit (Modified from: OF -20_06) ) Qa1 - Alluvium (Upper Holocene) a, Qa2 - Alluvium (Lower & Middle Holocene) Qa3 - Alluvium (Lower Holocene & - Upper Pleistocene) Qe - Eolian Sediment Artificial Fill Water Body Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 6N 6' -W 6N 64W LU z LO 4620 460241 4599 4599 0 Q '4592 4594 94627 4594 4594 4600 4595 4606 4600 Figure A-4 Water Table Elevation Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) 4618 4612 fia- 'Q 4592 tjIGH1'N0 Dam -c O4615 4614 4 89: 04583 0 4573 ,4582 4566. Page 27 of 32 %594 r. 4594 c') ;4562. Map Legend O Mode! Domain Slurry Wall d Elevation Point at River DWR Well* C) Monitoring Well* Water Table Elevation Contour^ Ditch/Canat *Only wells with depth to water table in the lithology log are shown. Monitoring well water table elevation was recorded on 08.14.2023. Points are labeled with water table elevation, "Water table elevation contours were revised from Robson et al. (2000) west of Range 64W and Hurr and Schneider (1972) east of Range 65W (per SPDSS alluvial aquifer configuration data sources). Date; September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet a rJLrJ1& U 6 � 6N 6 In z w 3 Lri LO z u7 W 6N 64W *Saturated thickness calculated by subtracting bedrock elevation from water table elevation. The ">" sign indicates that the well had no bedrock recorded in lithology log; total depth of well was used to calculate estimated saturated thickness for those wells. A Saturated thickness was calculated by subtracting the revised SPDSS bedrock contours from the modeled water table. Figure A-5 Aquifer Saturated Thickness Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World lmagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) Map Legend Model Domain -- Slurry Wall O Monitoring Well* • DWR Well* Ditch/Canal Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet Aquifer Saturated Thickness (ft)" e 20' 20' to 30' 30' to 40' 40' to 50' 50' to 60' f 60' to 70' 70' to 83' Page 28 of 32 4 L� r LD 6N 65W /700 / / 20 1 0 _) 600 850 15 O 20 1500 1150 u; i1' 1100 7 ? 0 15 ;15 800 Figure A-6 Well Yield Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) Page 29 of 32 03 1200 15 20I 1000 r• - '` th---) ' 2500 ' 2500 _ 1200 1200 x,1000 31/ ©25S F--]/ 15 2000 12 2O00 1750/ O J Q / v''_ 30 / ( " / 1 S '' I Domestic/Stock (250-1,000 gpm) Irrigation (250-1,000 gpm) Commercial/Industrial (250-1,000 gpm) Fire/Dewatering/Other (250-1,000 gpm) Irrigation (>1,000 gpm) Commercial/Industrial (> "! ,000 gpm; Fire/Dewatering/Other (>1,000 gpm) Ditch/Canal Labeled with yield data (gallons per minute) 15 1200 900 800 800 C; 90mmilmi"0 _E 20 1200 � w Ci 17 15 15 a 1250 Li Map Legend Study Area 6N 64W Domestic/Stock (<250 gpm) Irrigation (<250 gpm) Commercial/Industrial (<250 gpm) Fire/Dewatering/Other (<250 gpm) Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 6N 6 Lin 0 z to u1 to z u7 Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -2O-06) 6N 64W Page 30 of 32 2 SPDSS Transmissivity (square feet/day) Modeled Transmissivity (square feet/day) c( 20,000 20,000 to 30,000 30,000 to 40,000 40,000 to 54,000 6N 6 6N 64W Page 31 of 32 Ln LID z LU Ln to z Figure A-8 Water Table Comparison and Modeled Head Residuals Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS We I Permit Database; i&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) Map Legend Model Domain Slurry Wall Model Target Well Residuals (Labeled with residual value) Negative Residua' Zero Positive Residual Modeled Water Table Elevation Contour Water Table Elevation Contour^ Ditch/Canal "Water table elevation contours were revised from Robson et al. (2000) west of Range 64W and Hurr and Schneider (1972) east of Range 65W (per SPDSS alluvial aquifer configuration data sources). Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 6N +6 LU Ui z u I 458-WC6 L 12187-R C 6N 64W 11566 -R -R 11568-R 11567 -R -R F 7109-R 150185 5534 58628-M1 n 53370-MH 11182-R F) -10 y 1 32613 0 32613-A 07 399014 H 39135-M ; C3 99992—M H Li 27966\ x279603 1790574 5_R 395364MH 39904-MH I 279599 nj 818-I'H 56629-MH 11567 —R —R 11567-R • 14254-R 3647=9-F4War ��- 51299-f 824-WCB 956-WCB 11749 3 -12497 13968, 26 9lb7Aa 312498 127910 126291 36479- �, ----- — r� 1,� a 12.11-Ritetyitp Page 32 of 32 63967-MH 250403 13967 -R -R 127912 —] 276227 :t 013967-R H 12898-R slifikOm 24101 317304 60226-M H 0 44660 Figure A-9 Predicted Change in Water Levels Due to Ogilvy Pit Ogilvy River Farm Pit Weld County, Colorado Sources: CDSS Well Permit Database; J&T Consulting Monitoring Well Data; ESRI World Imagey (2021); SPDSS; USGS DEM 10m; Kersey Quad Geologic Map (OF -20-06) 61539-MH • VIAND DITCri 0276114 Map Legend Model Domain ---- Slurry Wall Change in Water Level Contour Drawdown Mounding Ditch/Canal Date: September, 2023 Datum/Projection: NAD83/Colorado State Plane North, feet 151196 126287 791.11 120.87-F 12240 II E 0.5 DWR Well (by Current status) • Well Abandoned Well Constructed Well Constructed - Replacement Permit Issued 0 Well Replaced - Abandonment Required 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 98.2 -acre survey area. The following provides key items identified as part of this report: `I Three primary land use class/vegetation cover types exist within the survey area. Habitat within the survey area is characterized as the Ruderal Smooth Brame Grassland (24%), Plains Cottonwood / Narrowleaf Willow Riparian Woodland (14%), and Row Crop Cultural Formation. Open water habitat within the South Platte River channel accounts for the remaining 8% of the total cover. 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. The South Platte River and adjacent cottonwood riparian community provides suitable habitat for wildlife species and MBTA species. Although the South Platte River riparian corridor is not protected within the survey area, ERC recommends taking measures to avoid impacting these areas. 3. 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. 4. One active red-tailed hawk nest was identified approximately 200 feet south of the survey area. The survey area is subject to CPW red-tailed hawk nesting site recommended restricted use. The active nest site buffer creates a 1/3 -mile radius that extends across a majority of the southern end of the survey area in which no activity should occur from February 15 through July 15. Construction activities and surface occupancy may begin after the nest is no longer occupied. CPW recommends beginning any ongoing operation as close to the active nest site as practicable to allow raptors returning to the nest site to assess their level of tolerance to the continuing operations. Nest site trees may also be removed outside of breeding season while the nest is unoccupied and with the permission of the landowner. Activities proposed during the active breeding season while the nest is occupied will require consultation with CPW prior to beginning. 5. One bald eagle nest site was identified approximately 2,000 feet west of the survey area. The survey area is subject to CPW and USFWS bald eagle nesting site recommended restrictions. The active nest site creates a 1/2 -mile radius that extends across the far isdi J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application western portion of the survey area in which no activity should occur from December 1 through July 31; however, the survey area is outside of the '/4 -mile surface occupancy restriction and features (pits, well, dwellings, etc.) are permitted to be constructed this area if they are placed there outside of the December 1 to July 31 timeframe. Activity proposed during this time frame will require prior consultation with CPW and possibly USFWS. 6. 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. 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. 7. 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. The Screening Report for Federal and State Listed Threatened and Endangered Species prepared by Ecological Resource Consultants, Inc. includes the following recommendations regarding migratory birds and raptor nest sites in the survey area: a. Based- upon literature review and an onsite assessment of the survey area, ERC has determined that some migratory birds likely utilize the survey area. These birds, their eggs, and active nests are protected under the MBTA and take or possession of these resources is prohibited. Active nests must become inactive prior to destruction of the nest without a USFWS permit. Five (5) inactive non -raptor migratory bird nests were observed within the survey area. The nesting season in Colorado for non -raptor migratory birds occurs between April 1 and August 31 (CPW 2020). Seasonal MBTA non -raptor bird nesting activity status can vary seasonally and from year to year, therefore nesting surveys should be conducted no more than 7-10 days prior any future land use changes to ensure active nests are not disturbed during nesting season. b. Raptor (non -eagle) migratory bird nest sites are further protected by CPW guidelines. CPW has established recommended buffer zones and seasonal activity restrictions for a variety of Colorado raptors. Three (3) inactive raptor nests were observed and no CPW mapped raptor nest protection zones are located within the survey area (CPW 2022a). 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'/2 to 1/4 mile of the survey area to ensure compliance with CPW recommendations. c. Eagle nest sites are protected under Bald and Golden Eagle Act, further restricting destruction of any nest without a permit. No eagle nests sites were observed and no CPW nest sites eagle nests sites, communal roost sites, or winter roost sites are mapped on or within the vicinity of the survey area. Inactive eagle nest sites require further agency coordination even when nests are unoccupied as nest activity status can J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application vary seasonally and from year-to-year. Future land use changes may require additional nest surveys (generally to be conducted between December 1 and July 31 (CPW 2020)) to determine activity status within %/ to % mile of the survey area to ensure compliance with CPW recommendations. Attached is ERC's Screening Report for Federal and State Listed Threatened and Endangered Species. J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application BU!!ftIS ELIL© 2820 Wilderness Place, Suite A" Boulder, CO 80301^' (303) 679-4820 ass SCREENING REPORT FOR FEDERAL -STATE LISTED THREATENED AND ENDANGERED SPECIES AND GENERAL WILDLIFE FOR OGILVY RIVER FARMS SITE WELD COUNTY, COLORADO August 1, 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 #420-2309 sixEnt Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening Screening Report for Federal -State Listed Threatened and Endangered Species and General Wildlife Ogilvy River Farms Weld County, Colorado August 1, 2023 Contents 1.0 INTRODUCTION 1 2.0 GENERAL SURVEY AREA DESCRIPTION 1 3.0 SCREENING METHODOLOGY 5 4.0 GENERAL WILDLIFE HABITAT (NON -REGULATED) 5 6 6.0 SPECIES PROTECTED UNDER THE ENDANGERED SPECIES ACT OF 1973 9 PREBLE'S MEADOW JUMPING MOUSE (ZAPUS HUDSONIUS PREBLEI) 10 UTE LADIES' -TRESSES (SPIRANTHES ES DILUVIALIS) 10 7.0 STATE THREATENED AND ENDANGERED SPECIES 11 BLACK -FOOTED FERRET (MUSTELA NIGRIPES) 12 BURROWING OWL (ATHENE CUNICULARIA).13 8.0 SUMMARY ......13 9.0 REFERENCES 15 5.0 MIGRATORY BIRD TREATY ACT ... . ........ ....... Figures FIGURE 1 -VICINITY MAP FIGURE 2 -VEGETATION COMMUNITY MAP FIGURE 3 - MBTA NEST ACTIVITY MAP Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening 1.0 INTRODUCTION Ecological Resource Consultants, LLC (ERC) has prepared this report at the request of the property representative, J&T Consulting, Inc. The 98.2 +/- acre property referred to herein as the Ogilvy River Farms Site (survey area) is located near Greeley, Weld County, Colorado. The survey area is under consideration for potential future land use changes 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 and Rule 6.4.8 of the Construction Materials Rules of the Colorado Mined Land Reclamation Board Exhibit H — Wildlife Information. 2.0 GENERAL SURVEY AREA DESCRIPTION The survey area is located at 28859 County Road 53, Greeley, CO 80631 near Greeley, CO in the Owl Creek - South Platte River watershed (HUC 101900030607). More specifically, the survey area is located in Sections 8 and 9, Township 5 North, Range 64 West, in Weld County. Approximate center point of survey area is latitude 40.418870°N, -104.566643 °W. From 1-76 N from Denver, take exit 34 towards Kersey Rd. Turn north onto Co Rd 49 and continue for 20.0 miles. Turn east onto US -34 E and continue for 2.0 miles. Turn north onto CR 53 for 1.9 miles and the survey area will be to the west. The survey area consists of an agricultural field and can be accessed on foot. 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 4,600 feet above mean sea level (AMSL). The vicinity of the survey area is comprised of agricultural land. The landscape within the survey area is predominantly characterized as the Ruderal Smooth Brome Grassland, Row Crop Cultural Formation, and Plains Cottonwood / Narrowleaf Willow Riparian Woodland. (NatureServe 2023). Ruderal Smooth Brome Grassland The Ruderal Smooth Brome Grassland community occurs widely throughout the Great Plains, in disturbed montane meadows in the Rocky Mountains, on relatively mesic sites in the semi -arid interior western United States. Stands can occur in a wide variety of human -disturbed habitats. Other weedy species such as Canada thistle (Cirsium arvense) and Kentucky bluegrass (Poo pratensis) may occur. Row Crop Cultural Formation The Row Crop Cultural Formation community is widely distributed across the globe, except in very dry or very cold regions. Agricultural vegetation, including row crops, such as corn, soybeans, cotton, tobacco, sunflowers, a wide variety of vegetables, and some planted grain crops (annual rye, wheat). Plains Cottonwood/ Narrowleaf Willow Riparian Woodland The Plains Cottonwood / Narrowleaf Willow Riparian Woodland community is a lowland riparian association that occurs in the Great Plains of Colorado in wide river corridors that have low -gradient and primarily sandy/gravelly beds. Most often found proximal to perennial rivers on low sidebars and streambanks near stream bankfull levels. Dominated by relatively young stands of plains cottonwood (Populus deltoides ssp. monilifera) that form open to moderately open overstories (25-50 % cover) with thickets of narrowleaf will (Salix exigua) in the understory. 1 �..' EMC Legend * Approximate Location Survey Area Prepared By: ERC 2820 Wlderness Pl Ste A Boulder, CO 80301 L3 E # 420-2309 RC � Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening FIGURE 1. USGS TOPOGRAPHIC MAP OGILVY RIVER FARMS WELD COUNTY, COLORADO 0 500 1,000 Feet 2 Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening Refer to Photos 1-8 below for typical characteristics within the survey area. Photo 1. View southeast from the northwest corner of the survey area with the Row Crop Cultural Formation in the background and the Ruderal Smooth Brome Grassland in the iforr:'i round. Photo 3. View east of the Ruderal Smooth Brome Grassland communit in the central portion of the survey area. Photo 5. View southeast of the Plains Cottonwood / Narrowleaf Willow Riparian Woodland community north of the South Platte River. j .t, Photo 7. View southeast of the South Platte River channel in the eastern portion of the survey area. Photo 2. Overview north pf the Row Crop Cultural Formation in the northern portion of the survey area. Photo 4. View east of the Ruderal Smooth Brome Grassland community in the central portion of the survey area Photo 6. View west of the north bank of the South Platte River in the eastern portion of the survey area. Photo 8. View south the South Platte River channel in the eastern portion of the survey area. 3 A ERC Prepared By: 2820 Wilderness Place, Suite A Boulder, CO 80301 (303) 679-4820 ERC *: 420-2309 Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening Vegetation Community Plains Cottonwood / Narrowleaf Willow Riparian Woodland (13.8 ac) Row Crop Cultural Formation (53.3 ac) Ruderal Smooth Brame Grassland (23.2 ac) ] South Platte River (7.9 ac) FIGURE 2 VEGETATION COMMUNITY MAP OGILVY RIVER FARMS WELD COUNTY, COLORADO 4 Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening 3.0 SCREENING METHODOLOGY 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 July 7, 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. 4.0 GENERAL WILDLIFE HABITAT (NON -REGULATED) 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, three habitat types were observed within the survey area and are characterized as Ruderal Smooth Brome Grassland, Plains Cottonwood / Narrowleaf Willow Riparian Woodland, and Row Crop Cultural Formation. Both Ruderal Smooth Brome Grassland (24% total cover) and Row Crop Cultural Formation (54% total cover) 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. Herbaceous non-native species and ruderal native species which dominate the vegetation community generally do not provide quality habitat for most wildlife. The Plains Cottonwood / Narrowleaf Willow Riparian Woodland community (14% total cover) provides high relative ecological value within this floodplain area in the form of nesting, foraging, cover, and an adjacent fresh water source. Open water habitat within the South Platte River Channel accounts for the remaining cover within the survey area (8%). 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 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 (Cepus sp.), cottontail (Sylvilagus sp.), black tailed prairie dog (Cynomys ludovicianus), white-tailed deer (Odocoileus virginianus), deer mouse (Peromyscus maniculatus), meadow vole (Microtus pennsylvanicus), red -winged blackbird (Agelaius phoeniceus), mourning dove (Zenaida macroura), killdeer (Charadrius vociferous), western meadowlark (Sturnella neglecta), barn owl (Tyto alba), hawks (Buteo 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. • 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 Great Plains Ruderal Grassland and Shrubland, which is degraded from a wildlife perspective by historic and current land use practices. 5 ERC Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening • The Plains Cottonwood / Narrowleaf Willow Riparian Woodland community vegetative community contains stands of mature and dead trees that provide relatively high ecological value to wildlife, migratory birds and raptors. These species may use the floodplain as cover, hunting grounds, and potential nesting habitat. Other wildlife may use the South Platte River as a travel corridor and/or for foraging. This community creates a natural buffer between the South Platte River and the rest of the survey area. 5.0 MIGRATORY BIRD TREATY ACT 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 bids 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 Arras platyhychos Mallard Branta candadensis Canadian goose Circus hudsonius Northern harrier Melospiza melodic Song sparrow Pica hudsonious Black -billed magpie Buteo jamaicensis Red-tailed hawk Turdus micgratorius American robin Ardea herodias Great blue heron Tyrannus vertical's Western kingbird Western wood -pewee Contopus sordidulus Sturnella neglecta Western meadowlark 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 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. According to the USFWS Region 6 Migratory Bird Conservation Actions for Projects to Reduce the Risk of Take during the Nesting Season, an active nest survey should be performed "no more than 7-10 days prior to when work actually begins on the project site" during migratory bird nesting season to determine the presence and activity status of nests protected by the MBTA. 6 1 l y �� t, t' Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening Raptors 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. • One active red-tailed hawk nest was observed approximately 200 feet south of the survey area. No CPW mapped non -eagle raptor nest protection buffer zones are located within the survey area (CPW 2023a). CPW recommends no surface occupancy of physical objects (oil wells, road, trails, houses, etc.) within a % mile radius throughout the year while a nest is considered active and no human encroachment activities within % mile radius of active nests for red-tailed hawks from February 15 through July 15. Although activities including construction activities are permitted outside of the typical season when the nest has been determined to be no longer in use for that season. Once a nest is determined to be unoccupied for the season, construction activities may begin within the buffer area. CPW recommends that any continual operations begin nearest to the nest site to allow the raptors to gage their tolerance for ongoing activities prior to resuming use of the nest. Non -eagle raptor nest trees may be removed outside of the breeding season when the nest is unoccupied and with permission of the landowner. If encroachment activities are planned during the breeding season, consultation with CPW is required and the CPW District Wildlife Manager may require raptor nest construction monitoring while the nest is in use. Future land use changes may require an additional nest survey (generally between February 1 and September 15 (CPW 2020)) to determine activity status within %3 mile of the survey area to ensure compliance with CPW recommendations. • One bald eagle nest site is identified by CPW SAM data that lists the nest site as "Active" approximately 2,000 feet west of the survey area. The nest site was observed to be active from the Ogilvy Ditch access road north of the survey area during the July 2023 site visit. CPW recommends no surface occupancy beyond that which historically occurred, within % mile (1320 feet, 400 meters) radius and no human encroachment activities including construction activities within /2 mile (2640 feet, 800 meters) radius of active nest sites from December 1 through July 31. The survey area is outside of the 1/4 mile bald eagle nest protection buffer for surface occupancy and therefore, no surface occupancy restrictions for bald eagle occur in the survey area. However, human e ncroachment activity restrictions occur between December 1 through July 31 or until young have fledged from the nest for the season. • If activities are planned during the breeding season within the human encroachment buffer, consultation with CPW and the USFWS is required. A USFWS eagle nest take permit would need be o btain and the CPW District Wildlife Manager may require raptor nest construction monitoring while the nest is in use. Future land use changes may require an additional nest survey (generally between February 1 and September 15 (CPW 2020)) to determine activity status within %2 mile of the survey area to ensure compliance with CPW recommendations. 7 R Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening Bald Eagle 1/2 mile nest buffer e__._; Red -Tailed Hawk 1/3 mile nest buffer ERC Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening 6.0 SPECIES PROTECTED UNDER THE ENDANGERED SPECIES ACT OF 1973 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, endangered, and proposed species, designated critical habitat, 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: 2023-0106718). The species list for the survey area has identified potential for a total of 8 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 Eastern black rail FT NO TAKE Laterallus jamaicensis *Status key: FT - Federally listed as threatened • The survey area does not contain the specific habitat characteristics necessary to support the species listed above. This species and/or critical habitat is not present within the survey area. Therefore, future land use will result in No Take of the species, their habitats, or proposed or designated critical habitat. Water Depletions S :ecies 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 meladus FT NOT PRESENT, NO TAKE A Western prairie fringed orchid NOT PRESENT, NO TAKE^ Platanthera praeclara FT Whooping crane Grus Americana FE 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. It is assumed 9 Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening 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. 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. ' Status* Determination Common Name Scientific Name Preble's meadow jumping mouse Zapus hudsonius preblei FT NO TAKE Ute Ladies' -tresses orchid Spiranthes diluvialis FT NO TAKE *Status key: FT- Federally listed as threatened PREBLE'S MEADOW JUMPING MOUSE (ZAPUS HUDSONIUS PREBLEI) On May 13, 1998, the US Fish and Wildlife Service issued a final rule to list the Preble's meadow jumping mouse (PMJM) as a federally threatened species under the ESA. PMJM range extends from southwestern Wyoming through eastern Colorado generally below 7,600 feet. In Colorado, PMJM populations are generally restricted to locations along the Front Range foothills and adjacent riparian areas. Schorr and Mihlbachler (2018) describe typical PMJM habitat being restricted to dense shrub cover and dense herbaceous vegetation along wetland and riverine systems. Armstrong et al. (1997) characterize PMJM habitat as "well -developed plains riparian vegetation with relatively undisturbed grassland and a water source in close proximity." Also noted in Armstrong et al. (1997) was a preference for "dense herbaceous vegetation consisting of a variety of grasses, forbs and thick shrubs" . The PMJM hibernates in an underground burrow from September to May. PMJM bears two to three litters per year, averaging five young per litter, in a grass -lined nest. Areas that are highly disturbed or modified (including landscaped lots and paved areas) or wetland areas dominated by cattails are excluded from this recommendation. No PMJM individuals were present during either of the surveys (USFWS 2018). No critical habitat occurs within the survey area (USFWS 2023). The nearest critical habitat, Critical Habitat Unit 3- Buckhorn Creek, is located approximately 35 miles to the northwest. The USFWS Block Clearance Map for the Denver Metro Area (ERO 2010) which identifies areas exempt from further review for PMJM habitat, shows the survey area occurring outside of the Block Clearance Zone. The South Platte River corridor does have some suitable habitat, although areas with well -developed dense shrub cover are sparse within the survey area. Any future land use changes on the survey area would likely result in No Take of this species or potential habitat of this species. UTE LADIES' -TRESSES (SPIRANTHES DILUVIALIS) The Ute ladies' -tresses (ULT) is listed as federally threatened under the ESA. The ULT occurs in seasonally moist soils and wet meadows near springs, lakes, or perennial streams and their associated floodplains below 6,500 feet in elevation in certain areas of Utah, Colorado, Idaho, Wyoming, and Nevada. Typical sites include early successional riparian habitats such as point bars, sand bars, and low lying gravelly, sandy, or cobbly edges. They seem to require "permanent subirrigation", conditions where the water table is close to the surface, but they are not tolerant of permanent standing water. Typical habitat is 10 4440 S Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening open and sparsely vegetated, populations decline if trees and shrubs invade the habitat. They do not compete well with aggressive species such as reed canary grass or monocultures of cattails. • There are known population occurrences of ULT in Weld County. A total of 21 historic and extant populations have been recorded in Colorado in 6 watersheds, none of which have occurred in the Owl Creek -South Platte River Watershed. The USFWS ULT Block Clearance Zone for the Denver Metro Area (USFWS 2008) which identifies areas exempt from further review for ULT habitat, shows the survey area does not occur within the Block Clearance Zone. • The vegetation communities within the survey area too densely vegetated to be considered typical habitat conducive to the Ute ladies' -tresses. No Ute ladies' -tresses or suitable habitat was identified within the survey area. Any future land use changes on the survey area would result in No Take of this species or potential habitat of this species. TO STATE THREATENED AND ENDANGERED SPECIES 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). Status* Common Name Scientific Name , Bufo boreas boreas SE Boreal toad Southwestern willow flycatcher SE Empidonax traillii extimus Lesser prairie -chicken Tympanuchus pallidicinctus ST Tympanuchus phasianellusfamesii SE Plains sharp -tailed grouse Arkansas darter Etheostoma cragini ST Gila elegans SE Bonytail i I 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 SE Couesius plumbeus Plains minnow Hybognathus placitus SE 11 � IRC Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening Common Name I Scientific Name Status* Suckermouth minnow Phenacobius mirabilis SE SE Northern redbelly dace Phoxinus eos Southern redbelly dace Phoxinus erythrogaster SE ST Brassy minnow Hybognathus hankinsoni ST Common shiner Luxilus cornutus SE Gray wolf Canis lupus SE Grizzly bear ursus arctos Lynx Lynx canadensis SE SE Wolverine Gulo gulo Kit fox Vulpes macrotis j SE ST River otter Lontra canadensis *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 Rang 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 SE Mustela nigripes 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. ludovicianus), Gunnison's prairie dog (C. gunnisoni), and white-tailed prairie dog (C. leucurus). Prairie dogs make up more than 90% of the BFF's diet. BFF's 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). BFF's 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. 12 Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening 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 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 (ATHENE 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 grazed which further limits the potential use of the survey area by this species. 8.0 SUMMARY ERC has conducted this screening for federal and state listed threatened and endangered species and general wildlife for the approximately 134 -acre survey area. The following provides key items identified as part of this report: 1. Three primary land use class/vegetation cover types exist within the survey area. Habitat within the survey area is characterized as the Ruderal Smooth Brome Grassland (24%), Plains Cottonwood / Narrowleaf Willow Riparian Woodland (14%), and Row Crop Cultural Formation. Open water habitat within the South Platte River channel accounts for the remaining 8% of the total cover. 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. The South Platte River and adjacent cottonwood riparian community provides suitable habitat for wildlife species and MBTA species. Although the South Platte River riparian corridor is not protected within the survey area, ERC recommends taking measures to avoid impacting these areas. 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. 13 EEC Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening Raptors One active red-tailed hawk nest was identified approximately 200 feet south of the survey area. The survey area is subject to CPW red-tailed hawk nesting site recommended restricted use. The active nest site buffer creates a 1/3 -mile radius that extends across a majority of the southern end of the survey area in which no activity should occur from February 15 through July 15. Construction activities and surface occupancy may begin after the nest is no longer occupied. CPW recommends beginning any ongoing operation as close to the active nest site as practicable to allow raptors returning to the nest site to assess their level of tolerance to the continuing operations. Nest site trees may also be removed outside of breeding season while the nest is unoccupied and with the permission of the landowner. Activities proposed during the active breeding season while the nest is occupied will require consultation with CPW prior to beginning. One bald eagle nest site was identified approximately 2,000 feet west of the survey area. The survey area is subject to CPW and USFWS bald eagle nesting site recommended restrictions. The active nest site creates a 1/2 -mile radius that extends across the far western portion of the survey area in which no activity should occur from December 1 through July 31; however, the survey area is outside of the -mile surface occupancy restriction and features (pits, well, dwellings, etc.) are permitted to be constructed this area if they are placed there outside of the December 1 to July 31 timeframe. Activity proposed during this time frame will require prior consultation with CPW and possibly USFWS. 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. 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. Matthew Boyer, Project Ecologist, Certified Ecologist Reviewed and approved by: David J. Blauch, V.P., Senior Ecologist 14 E Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening 9.0 REFERENCES Andrews, J.M., and R. Righter. 1992. Colorado Birds: a reference to their distribution and habitat. Denver Museum of Natural History, Denver. Armstrong, D.M., et al. Edited by M.E. Bakeman. May 1997. Report on Habitat Findings of the Preble's Meadow Jumping Mouse. Presented to the US Fish and Wildlife Service and the Colorado Division of Wildlife. Belant, J., Gober, P. & Biggins, D. 2008. Mustela nigripes. The IUCN Red List of Threatened Species 2008: e.T14020A4382826. http;J/dix.doi.or10.2305/IUCN.UK.2008.RLTS.T14020A4382826.en. CPW. Colorado Parks and Wildlife. 1992. Wildlife in Danger: The status of Colorado's Threatened or Endangered Fisk Amphibians, Birds and Mammals. CPW. Colorado Parks and Wildlife. 2020. Recommended Buffer Zones and Seasonal Restrictions for Raptors. Available online at: lhttps://cp .state.co.gas/Documents/WildlifeSpecies/LivingwithWild lifernaltorBufferGuidelines200 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.comjhome)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 CPW. Colorado Parks and Wildlife. 2023c. Robert Sacco. Personal Communication. January 23, 2023. CNHP. Colorado Natural Heritage Program. May 1999. Conservation Status Handbook: Colorado's Animals, Plants, and Natural Communities of Special Concern. Volume 3, Number 2. Colorado Natural Heritage Program, Room 254 General Services Building, Colorado State University, Fort Collins, Colorado, 80523. CNHP. Colorado Natural Heritage Program. 2010. Prebles Meadow Jumping Mouse (PRIM), Ute Ladies Tresses Orchid (ULTO) and Colorado Butterfly Plant (CBP) Block Clearances for the Denver Metropolitan Area. Revised 2010. Prepared for Denver Urban Drainage and Flood Control District. ER0 Resources Corp., 1842 Clarkson Street, Denver, CO 80230. 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. January. USFWS. US Fish & Wildlife Service. 1992. Interim Survey Requirements for Spiranthes auvialis. Colorado State Office. November 23. Available online at: http://www.fws.govJmountain- p€rairiejendspp/protocolsJUteLad esTress1992.pdf. Accessed April 2012. USFWS. US Fish & Wildlife Service. October 2000. Federal Register Volume 65, Number 96, pages 62302- 62310. Final Listing: Endangered and Threatened Wildlife and Plants: Threatened Status for the Colorado Butterfly Plant (Gaura neomexicana ssp. coloradensis) From Southeastern Wyoming, Northcentral Colorado, and Extreme Western Nebraska. 15 ETS? CA" Ogilvy River Farms Site Threatened -Endangered Species and General Wildlife Screening USFWS. US Fish & Wildlife Service. 2004. News Release. Critical Habitat Proposed for the Colorado Butterfly Plant. August 6, 2004. Available online at: httMwww.fvwfsegov/rnowitain- plairieipressreVO4-55.htm. USFWS. US Fish & Wildlife Service. 2005. Rangewide Status Review of Ute Ladies' Tresses (Spiranthes diluvialis). September 30, 2005. Available online at: https://sAnAtisAilwsgovimountain- prairie/es/species iants/nteladiestress/SPDi Status%20review Fertig2005.pdf. USFWS. US Fish & Wildlife Service. 2007. National Bald Eagle Management Guidelines. Available online at: https://wwwfws. ov/sitesJdefaultJfilesJdocuments/`national-bald-eagle-rnana er ent- guidelines0.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.govimou_ntain- prairieliticiciesirnammals, bleckfootet ferret, BiockClearanceMa2009SeptemberColor<_o tab|.�_� f USFWS. US Fish & Wildlife Service. 2014. 50 CFR Part 17. Docket Number FWS-R6-ES-2009-0013. Endangered and Threatened Wildlife and Plants; Revised Critical Habitat for the Preble's Meadow Jumping Mouse in Colorado. September. Available online at: https://www.fws.goy/mountain- prairie/es/species/mamryais/preb eJCRITiCAL% OHAWITAT 'i21 2Oi0TempFR.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: 2023-0036832. January 23. 16 EXHIBIT 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 five major soil types within the project area: 1. Aquolls and Aquents, gravelly substratum 2. Ellicott -Ellicott sandy — skeletal complex, 0 to 3 percent slopes, rarely flooded 3. Colombo clay loam, 1 to 3 percent slopes 4. Haverson loam, 1 to 3 percent slopes 5. Nunn clay loam, 1 to 3 percent slopes 6. Vona sandy loam, I to 3 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: 3 _ Aquolls nd_ ►quent , gravelly substratum Map Unit: 10 EIIicotttEIIicott sandy — skeletal complex, 0 to 3 percent slopes, rarely flooded Map Unit: 20 Combo clay loam, I to 3 percent slopes Map Unit: 26 Haver -son loam, 1 to 3 percent sloes Map Unit: 42 _Nunn clay loam. 1 to 3 percent slopes Map Unit: 76 Vona sandy loam,. I to 3 percent slopes See attached NRCS report for the permit boundary area. J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm 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 is currently Rudural Smooth Brome Grassland, Row Crop Cultural Formation, and Plains Connonwood/Narrowleaf Willow Riparian Woodland. ERC's wetland delineation report is attached which includes descriptions of the general vegetation found on the site and wetlands found in the area. Note that none of the wetlands found on the site per the ERC report will be disturbed with the proposed mining for the 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: 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. col o rado. g ov/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. ha I UT Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application � RE '= 2820 Wilderness Place, Suite A Boulder, CO 80301 (303) 679-4820 AQUATIC RESOURCE DELINEATION REPORT FOR OGILVY LVY RIVER FARMS PROJECT SITE WELD COUNTY, COLORADO JULY 20, 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 #420-2309 I/MC Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 EXECUTIVE SUMMARY Ogilvy River Farms Project Name Applicant/Owner J&T Consulting, Inc./ IHC Scott Survey Area Size (Acres) 98 -acres Weld, Colorado County, State 1987 Corps of Engineers Wetlands Delineation Manual Methodology ' Regional Supplement to Manual: Great Plains Region the Corps of (Version 2.0) Engineers Wetland Delineation (OHWIVM) 2008 Field in Guide to the the Arid West Identification Region of the of Western the Ordinary United States High -Water Mark Summary of Findings Aquatic Resource ID Size (acres) Connectivity' (Yes/No) Classification 2 Description A 0.03 Yes Ditch PEM 0.06 PEM/PFO 0.18 R4SBK B 8.81 Yes PEM Perennial Stream PFO 5.76 0.73 PSS X8.79 R2UBG _ PEM C 0.26 Yes Ditch Total Aquatic Resources 24.62 -- -a 'so* Note: Delineation All areas Map that (Appendix have been investigated A). in the field are mapped on the enclosed Aquatic Resource 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. S% ERC Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 CONTENTS 1.0 Introduction .+. si....i. lr. E4.,ea *no i..!.f...?.i.....•.. •••••••••14 Ono° * • * 1 2.0 Survey Area Location.r.r,.ar....a.l..r.irrrt.......r.{...rr..... y.aamour 1 3.0 Methodology a...,....a tilt*..,,...,... ...,..lr4Plr..#ID ... Ma4a.i.#.a4r44pa.4 4.0 Existing Conditions .4..,.a,.rr..a.....,.4 5 4.1 Landscape Setting .........a.,O.l.,s.. *II .......a .ra.s..5 4.2 Aquatic Resources ia.i 4.. .4a...a., rrMal,.,.,.,,.#.,f.4a. Oat 4...4i..i.......i4a4 4....ii..ai a Aquatic Resource A (0.27 acres) (1,173.57 Linear Feet) ,.........ir.i..,i 7 Aquatic Resource B (South Platte River) (24.09 acres) (1443.42 Linear Feet) 4Yi4..,.. $ Aquatic Resource C (0.26 Acres) 9...a...b...44 4...a...O 10 4.3 Upland Habitat r,11 4.4 Plant Speices Identified Within The Survey Area , ,,..'...4....* 11 5.0 References , .a•4..a.......4..,.,..l..,• •• 14 APPENDIX A Aquatic Resource Delineation Map Overview APPENDIX B ERC Wetland Determination Data Forms � ERC 1.0 INTRODUCTION Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 This report summarizes the delineation of aquatic resources completed by Ecological Resource Consultants, LLC (ERC) on behalf of J&T Consulting for the Ogilvy River Farms Project Site (survey area). This report documents aquatic resource boundary determinations for verification and jurisdictional review by the USACE, Omaha District Denver Regulatory Office. Project Contact information Applicant/Owner 1 Representative Company Name .. J&T Consulting, Inc. Ecological Resource Consultants, LLC Contact Name JC York Matthew Boyer Address 305 Fort Denver Lupton, Avenue, Suite CO 80621 D 2820 Boulder, Wilderness CO Place, 80301 Suite A Phone 303-857-6222 303-679-4820 x106 Email Jcyork@j-tconsulting.com matt#yew@erccoiorado.net 2.0 SURVEY AREA LOCATION State Colorado I County Weld County Parcel #s 096305000029, 096308000025, 096309200006 Nearest Town ' Greeley, CO Street Nearest Address/ Intersection 28859 COUNTY ROAD 53, Greeley, CO 80631 (center Latitude, of Survey Longitude Area) 40.418870 a N, -104.566643 o W Section, Township, Range Sections 8 and 9, Township 5 North, Range 64 West Direction Regulatory from Office Denver Take approximately exit consists miles. CR CO 34 53 Turn for -470 towards of east 1.9 an miles east 9 agricultural miles. Kersey onto towards and US Merge Rd. the -34 Turn field I-70 survey E onto north and and E. 1-76 continue area can Merge onto will be E, onto continue Co be accessed for to Rd 2.0 1-70 the 49 for and miles. west. on E and 33.6 continue foot. Turn The continue miles north survey and for take 20.0 onto area for Refer area. to Refer Figure 1 to Figure for a location 2 for the map NRCS and Web a U.S. Soil Geological Survey. Survey (USGS) topographic map of the survey ' I 1 Legend * Approximate Location Survey Area Pmpared By 4► ERC 2820 Wilderness P. Ste A Boolchic CO 80301 Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 FIGURE 1. USGS TOPOGRAPHIC MAP OGILVY RIVER FARMS WELD COUNTY, COLORADO 0 1,000 � ERC Figure 2. NRCS Web Soil Survey Map Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 Map Unit Symbol Map Unit Name Acres Hydric soil (+/-) (Yes/N'3 3 Aquolls and Aquents, gravelly substratum 19.4 Yes 10 20 Ellicott -Ellicott sandy -skeletal complex, 0 to 3 percent slopes, rarely flooded 10.4 No Colombo clay loam, 1 to 3 percent slopes 15.0 No 26 Haverson loam, 1 to 3 percent slopes 31.7 No 42 Nunn clay loam, 1 to 3 percent slopes 12.3 No 68 76 Ustic Torriorthents, moderately steep 0.0 No No Vona sandy loam, 1 to 3 percent slopes 2.7 85 Water 7.9 Yes 3 Hydric (Yes/No) — obtained from the USDA NRCS Web Soil Survey Map Unit Description NilailltbsSli 3.0 METHODOLOGY Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 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...). 1 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. �. SRC 4.0 EXISTING CONDITIONS 4.1 LANDSCAPE SETTING Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 Average (Feet Armin) Elevation 4,600' Topography Generally flat; sloping southwest LRR G Subregion (LRR). Watershed HUC Owl Creek -South Platte River -101900030607 Nearest Waterbody South Platte River Current Landuse Agricultural Historic Landuse Agricultural Dominant Vegetation Communities Row Narrowleaf Crop Cultural Willow Formation, Riparian Ruderal Woodland Smooth Brome Grassland, Plains Cottonwood / Reference (Corner 2023) General Description Vegetation The Cultural Grassland, Narrowleaf vegetation Formation, and Willow communities a exotic, mix of Riparian are dominated invasive native Woodland grasses, and non-native community. by and corn forbs species crop within (Zea within the mays) Ruderal Plains within the Smooth Cottonwood Row Crop Brome / Other Communities Vegetation N/A Reference (NatureServe 2023) Row Agricultural Ruderal Occurs Mountains, Stands such occur. Plains A corridors proximal Dominated monilifera) of lowland narrowleaf Crop as Cottonwood widely can Smooth Canada to Cultural that that vegetation, occur riparian perennial by on throughout have will relatively relatively form Brome thistle in (Salix Formation / low a Narrowleaf association rivers open wide including Grassland (Cirsium -gradient exigua) the mesic young on to variety low moderately Great sites arvense) Willow occurs stands in row and the sidebars Plains, of crops, in primarily understory. human Riparian in the of open and in the and such plains disturbed semi -disturbed Kentucky Great streambanks overstories as -arid Woodland sandy/gravelly cottonwood corn, Plains montane interior habitats. bluegrass soybeans, (25-50 of near western Colorado beds. (Populus meadows stream % Other (Poo cotton cover) Most weedy pratensis) bankfull etc. in United in often deltoides with wide the thickets States. species levels. Rocky may river found ssp. Vegetation Community Description(s) Notable Features Ogilvy dirt road Ditch Outlet, South Platte River, single family dwelling and associated buildings, Dates of Field Work June 29 and July 7, 2023. Weather Cloudy, calm winds (0-5 mph), 85° F. Normal conditions for time of year. Typicai- Climatic/Hydrologic Condition — Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 Refer to Photos 1-6 below for general characteristics the survey area. Photo 1. Overview facing southeast in the northwestern portion of the survey area. This portion of the survey area is primarily an agricultural field and the Ruderal Smooth Brome Grassland community along the Ogilvy Ditch Outlet overrun with ruderal weedy species. Photo 2. Overview facing northeast along the roadway that bisects the survey area west to east. Corn (Zea mays) is being cultivated within the Row Crop Cultural Formation community in the northern portion of the survey area. Photo 3. View southwest of the Plains Cottonwood / Narrowleaf Photo 4. View east at the road that bisects the survey area. Willow Riparian Woodland along the South Platte River in the The single-family dwelling is visible in the background. southwestern portion of the survey area. Photo 5. View north of the dirt road that leads to the south bank of the South Platte River. The County Road 53 bridge that spans the South Platte River and bounds the survey area to the east is visible on the right-hand side of the photo. Photo 6. View northwest of the mesic meadow along the north side of the South Platte River corridor. A ERC 4.2 AQUATIC RESOURCES Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 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 - Linear Feet Feature Type 4Cowardin Location (lat/long) Acres A PEM 40.4215°N, 104.574°W 0.03 Ditch _a- PR) / PEM 40.4225°N, 104.573°W 0.06 -- R4SBK 40.4227°N, 104.574°W 0.18 1,173.57 B PFO 40.2978°N, -104.838°W 5.76 -- Perennial Stream PEM 40.4174°N, 104.566°W 8.81 -- 1,443.42 R2UBG 40.4179°N, 104.568°W 8.79 PSS 40.4119°N, 104.564°W 0,73 -- C PEM / PFO 40.4211°N, 104.574°W 0.26 a Ditch 2-ininilli x616 zr 99 ,�.- - Total PS 24.620 A total of 24.62 acres of aquatic resources (2,616.99 linear feet) 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 (0.27 ACRES) (1,173.57 LINEAR FEET) Aquatic Resource A is a man-made ditch in the western portion of the survey area. The ditch contains palustrine forested / palustrine emergent (PFO / PEM), PEM wetland habitat, and riverine intermittent streambed artificially flooded (R4SBK). Approximately 325 feet of Aquatic Resource A is lined with concrete where the ditch is adjacent to the agricultural field to the east. Hydrology within the ditch appears to be supported primarily by water diverted from the Ogilvy Ditch just north of the survey area when water is being released. The ditch is controlled by a headgate from the Ogilvy Ditch. No irrigation water appears to be used in the survey area. The ditch appears to be a return outlet to the South Platte River. A direct surface water connection to the South Platte River (Aquatic Resource B), Waters of the U.S. (WOTUS) was observed in the survey area. The ditch was delineated based on the presence of hydrophytic vegetation, hydric soils and hydrology. 4 Habitat Type based on Cowardin et al. 1979. Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 201 2023 The vegetation within Aquatic Resource A contains reed canarygrass (Phalaris arundinacea), stinging nettles (Urtica dioica), narrowleaf willows (Salix exigua), and narrowleaf cattails (Typha angustifolia). The dominant species within the ditch consist of hydrophytic species (FAC-OBL). Soils within Aquatic Resource A are generally sandy gravelly loam in texture, meeting the criteria for hydric soil indicator F6 (Redox Dark Surface). At the time of the delineation, primary wetland hydrology indicators Al (Surface Water), High Water Table (A2), and Saturation (A3) were observed. Additionally, secondary hydrology indicators included D2 (Geomorphic Position). Aquatic Resource A comprises a total of 0.27 acres (1,173.57 linear feet) within the survey area (Appendix A). Refer to photos 7-8 below for characteristics within Aquatic Resource A. Photo 7, Overview facing south of Aquatic Resource A from the Photo 8. Overview facing south of Aquatic Resource A where Ogilvy Ditch access road in the northwest portion of the survey the ditch has been lined with concrete. The wetland area. The wetland boundary is depicted by the blue line. boundary is depicted by the blue line. AQUATIC RESOURCE B (SOUTH PLATTE RIVER) (24.09 ACRES) (1443.42 LINEAR FEET) Aquatic Resource B (South Platte River) is a perennial stream in the southern portion of the survey area. Aquatic Resource B contains palustrine forested (PFO), palustrine scrub shrub (PSS), mixed mesic palustrine emergent (PEM) wetland habitat and riverine upper perennial unconsolidated bottom intermittently exposed (R2UBG). The field north of the forested habitat along the South Platte River is influenced by runoff flowing through culverts and then trenches draining irrigation water from the agricultural field to the north. The irrigation water has pooled in the low topographical areas within the field and has created a mesic mosaic of upland and wetland pockets. The maximum extents of the mosaic complex of uplands intermixed with wetlands have been mapped. Although a more detailed delineation of the mosaic complex can be completed as needed, it is beyond this scope of work. It should be noted that this area is not entirely wetlands. Hydrology appears to be supported primarily by water upstream to the west within the South Platte River and from irrigation runoff. The South Platte River (Aquatic Resource B) is considered WOTUS. Aquatic Resource B was delineated based on the presence of hydrophytic vegetation, hydric soils and hydrology. The vegetation within Aquatic Resource B contains reed canarygrass, common read (Phragmites australis), crack willow (Salix fragilis), plains cottonwood (Populus deltoides ssp. monilifera), narrowleaf willows, and ERG Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 foxtail barley (Hordeum jubatum). The dominant species within Aquatic Resource B consist of hydrophytic species (FAC-OBL). Soils within Aquatic Resource B are generally sandy gravelly loam in texture, meeting the criteria for hydric soil indicator F3 (Depleted Matrix) and F6 (Redox Dark Surface). At the time of the delineation, primary wetland hydrology indicators Al (Surface Water), High Water Table (A2), Saturation (A3), and Oxidized Rhizospheres on Living Roots (C3) were observed. Additionally, secondary hydrology indicators included B10 (Drainage Patterns) and D2 (Geomorphic Position). Aquatic Resource B comprises a total of 24.09 acres (1,443.42 Linear Feet) within the survey area (Appendix A). Refer to photos 9-14 below for characteristics within Aquatic Resource B. Photo 9. Overview facing east of Aquatic Resource B of the Photo 10. Overview facing east of Aquatic Resource B of the channel of the South Platte River. Facing downstream on the north bank of the South Platte River. The mesic mosaic north bank of the South Platte River dominated by cottonwood understory is present in the foreground. and crack willow trees. Photo 11. Overview facing north of Aquatic Resource B of the Photo 12. View facing north of one of the trenches within the south bank of the South Platte River. Palustrine emergent mesic mosaic field that drain the irrigation from the vegetation is visible on the left-hand side of the photo. agricultural field to the north. 416 ERC Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 Photo 9. Overview facing east of the mesic mosaic field within the northern portion of Aquatic Resource B. AQUATIC RESOURCE C (0.26 ACRES) Photo 10. Overview facing north of one of the trenches within the mesic mosaic field. The road that bisects the survey area and agricultural field are visible in the background. The blue line depicts the boundary of Aquatic Resource B. Aquatic Resource C is a man-made ditch in the western portion of the survey area. The ditch contains PEM wetland habitat. The ditch is located between the agricultural field and the South Platte River (Aquatic Resource B). Hydrology is primarily supported by surface water run-off as well as irrigation run-off from the agricultural fields. Flows were not observed at the time of the site visit and are assumed to only be present during active irrigation. A direct surface water connection the South Platte River (Aquatic Resource B), Waters of the U.S. (WOTUS) was observed in the survey area. The ditch was delineated based on the presence of hydrophytic vegetation, hydric soils and hydrology. The vegetation within the ditch contains primarily narrowleaf cattail and cheatgrass. The dominant species within Aquatic Resource C consist of hydrophytic species (FAC-FACW). Soils within the ditch are generally sandy gravelly loam in texture, meeting the criteria for hydric soil indicator F6 (Redox Dark Surface). At the time of the delineation, primary wetland hydrology indicator C3 (Oxidized Rhizospheres on Living Roots) was observed. Additionally, secondary hydrology indicators included B10 (Drainage Pattern) and D3 (Geomorphic Position). Aquatic Resource C comprises a total of 0.26 acre within the survey area (Appendix A). Refer to photos 15-16 below for characteristics within Aquatic Resource C. A ERC Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 ti4lit II. Photo 15. Overview facing west of Aquatic Resource C, a topographical depression, within a ditch in the southern portion of the survey area. This ditch and topographical depression are likely filled with irrigation water during the growing season. The blue line depicts the boundary of Aquatic Resource C. 4.3 UPLAND HABITAT Photo 16. Overview facing east of Aquatic Resource C, a topographical depression within a ditch in the southern portion of the survey area. Broad leaf cattail dominates with a ruderal upland herbaceous understory. The blue line depicts the boundary of Aquatic Resource C. The wetland delineation identified approximately 73.58 acres of upland habitat within the survey area consisting predominantly of the agricultural field, ruderal grasslands, forbs, and bare ground. Topography across the survey area is generally flat with a topographic high point of 4,625 feet at the northwestern extent of the survey area. The vegetation communities 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 FACU-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). 4.4 PLANT SPEICES IDENTIFIED WITHIN THE SURVEY AREA Table 3. Plant Species Identified in Survey Area Scientific Name Common Name WIS* Arctium minus Lesser Burdock FACU Asclepias speciosa Showy Milkweed FAC Bassia scoparia i Kochia FACU Buffalograss FACU Bouteloua dactyloides Bromus inermis Smooth Brame UPL Bromus tectorum Cheatgrass U P L Sheperd's Purse FACU Capsella bursa-pastoris Chenopodium album Lamb's quarters FACU Chrysothamnus viscidiflorus Yellow Rabbitbrush UPL Conium maculatum Poison Hemlock FAC Convolvulus arvensis Field Bindweed UPL Descurainia Sophia Flixweed UPL Barnyard Grass FAC 'chin ochl oa crus-cjalli Eleocharis palustris Common spikerush OBL AERC Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 Table 3. Plant Species Identified in Survey Area Scientific Name Common Name WIS* Elymus canadensis Canada Wildrye FACU Elymus lanceolatus Thickspike Wheatgrass FACU Elymus trachycaulus Slender Wheatgrass FACU Helianthus annuus Annual Sunflower FACU Lactuca serriola Prickly lettuce FACW Lepidium latifolium Perennial Pepperweed UPL Mirabilis linearis Narrowleaf four o'clock UPL Melilotus officinalis Yellow Sweetclover FACU Onopordum acanthium Scotch Thistle UPL Populus deltoides ssp. manilifera Plains Cottonwood FAC Pascopyrum smith!! Western Wheatgrass FACU Phalaris arundinacea Reed Canarygrass FACW Phragmites austalis Common reedgrass OBL Rosa woods!! Woods Rose FACU Rumex crispus Curly Dock FAC Salix exigua Narrowleaf Willow FACW Salsol° kali Russian Thistle FACU Salix amygdaloides Peacheaf Willow FACW Salix fragllis Crack Willow FAC Salix exigua Narrowleaf willow FACW Salix lasiandra Pacific Willow FACW Sporobolus cryptandrus Sand Dropseed FACU Symphoricarpos occidentalis Western Snowberry UPL Thlaspi arvense Field Pennycress FACU xTriticosecale _ Triticale UPL Typha latlfolla Broadleaf Cattail OBL Ulmus pumila Siberian Elm FACU Urtica dioica Singing nettles FAC Xanthium strumarium Rough cocklebur FAC * Wetland OBL FACW FAC FACU UPL WIS Source: Wetland April Indicator 2O16. = Lichvar, Plant Status (WIS) occurs in aquatic =occurs in = occurs in = occurs in = occurs in R.W., List: 2O16 ISSN 2153 733X aquatic aquatic aquatic uplands D.L. — Banks, wetland Great resources http://www.phytoneuron.net/ resources resources resources > 99% Plains W.N. ratings. of Regions: > 99% 67-99% 34-66% 1-33% time Kirchner, Phytoneuron of time of and of of time time time N.C. Melvin. 2016-30: 2016. The 1-17. Published National 28 ALL Etc 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 F Aquatic diverting South U.S. the Flows Ogilvy Platte Resource A is water from River, which appear to Ditch. an the be irrigation Ogilvy is considered associated Ditch outlet south with ditch waters releases to the of from the Aquatic Resource B PFO / PEM B Aquatic stream and Resource considered B (South waters Platte of River) is a perennial the U.S. The confluence Platte River PFO, PEM R2UBG riverine (Mesic Mosaic), and is Aquatic the survey be field considered present agricultural area in the Resource during survey directly waters field C active area. is an in into of the the irrigation the irrigation northern South U.S. Flows ditch Platte of portion the appear flowing of River, agricultural to the from which only Aquatic Resource 6 PEM C Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 This report has been prepared by: ECOLOGICAL RESOURCE CONSULTANTS, INC. Matthew Boyer, Project Ecologist (303) 679-4820 x1O6 rnatthew@erccolorado.net Reviewed and approved by: David J. Blauch, V.P., Senior Ecologist (PWS # 2130) (303) 679-4820 x102 / dave@erccolorado.net 5.0 REFERENCES Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 20, 2023 Cowardin, L. M., V. Carter, F. C. Golet, and E. T. LaRoe. 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:Jjw .google.com/earth/. February. 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. February. Natural Resource Conservation Service (NCRS). Web Soil Survey. Soil Map. Available online at: https://websoilsurvey.sc.egov.usda.gov/Ap /WebSoilSurvey.aspx 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:/ w w.usace.army.mil/Portals/2/docs/civilworks/RGLS/rgl05-0S.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: htt : www.usace.army.mil/Portals/2/docs/civilworks/regulatory/reg supp/gp supp.pdf � ERC APPENDIX A Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 19, 2023 Prepared By: MAP LEGEND A ERC 2820 Wilderness Place, Suite A Boulder, CO 80301 (3 03) 679-4820 ERC # 420-2309 Property Boundary (98 2 ac) Data Point Location & ID Aquatic Resource Name Centerline (approximate) Delineated Aquatic Resource Habitat Type (Cowardin) PEM PSS 1■1! PEM/PFO l R2UBG PFO R4SBK Row Summary of Delineated Aquatic Resources Aquatic Resource _Name PE/PFO R4SBK R2UBG PEM PFO PSS PEW/PFO Classification Location (latjlong) 40.4215.N, 104.574°W Acres 0.06 40.422.5%, 104.573°W 0.03 0.18 1,173.57 40,4 7'N, 104 57CW 40.4179°N, 104.568°W 40.4174°N, 104.566°W 40.4175°N, 104.569°W 5.76 Linear Feet 40.4119'N, 104.564°W 0.73 40.4211`N. 104.574°W a26 Notes: 1 -Habitat Type based on Cowardin et al 1979 1,443.42 NOTES: 1. THE SURVEY AREA IS LOCATED IN SUMMIT COUNTY, COLORADO; SECTIONS 5, 8, AND 9; TOWNSHIP 5 NORTH; RANGE 6.4 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 JUNE 29 AND JULY 7, 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 GOOGLE EARTH, DATED 08/01/2020.. 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, OVERVIEW AQUATIC RESOURCE DELINEATION MAP OGILVY RIVER FARMS WELD COUNTY, COLORADO 0 150 300 Feet 600 E R APPENDIX B Ogilvy River Farms Project Site Aquatic Resource Delineation Report July 19, 2023 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld Sampling Date: 6/29/2023 Investigator(s): M. Boyer Landform (hillside, terrace, etc ): Drainage Subregion (LRR): LRR G Lat: 40.424144°N State: CO Sampling Point: DP - Al U Section, Township, Range: 8.5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 2 Soil Map Unit Name: Nunn clay loam, 1 to 3 percent slopes Long: -104.573349°W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology 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 X Is the Sampled Area within a Wetland? Yes No Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Data point within the northwest corner of the survey area. Upland data point is above the bank of the Ogilvy outlet ditch within uplands point DP Al w. Paired with data VEGETATION - Use scientific names of plants. Tree Stratum 1. 2. 3. 4 Absolute Dominant Indicator (Plot size: 30 ) % Cover Species? Status Saolinq/Shrub Stratum (Plot size: 15 ) 1 2. 3. 4, 5 Herb Stratum (Plot size: 5 ) 1. Bessie scoparia 2. Bromus tectorum 3. Bromus inermis 4. Con vol vul us arvensis 5. Helianthus annuus 6. 7. 8. 9. 10 Woody Vine Stratum 1. (Plot size: 5 % Bare Ground in Herb Stratum 5 20 =Total Cover =Total Cover Yes FACU 30 Yes UPL 20 Yes UPL 15 No UPL 10 No FACU 95 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 0 x 2 = 0 FAC species 0 x 3 = 0 FACU species 30 x 4 = 120 UPL species 65 x 5 = 325 Column Totals: 95 (A) 445 (B) Prevalence Index = B/A = 4.68 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) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No X Remarks: Data point in the uplands with no dominant hydrophytic vegetation. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - Al U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) Matrix Color (moist) 0-6 10YR 4/4 100 6-18 10YR 4/3 100 Redox Features Color (moist) °lo Type' Loc2 Texture Loamy/Clayey Loamy/Clayey 'Type: C=Concentration, DtDepietion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Remarks 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (All) 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 (53) (LRR F) 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) Redox Depressions (F8) High Plains Depressions (F16) (MLRA72&73 ofLRRH) Indicators for Problematic Hydric Soils0 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches) Hydric Soil Present? Yes No X Remarks: Soils are light colored and dry. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of of e is required; check all that apply, Surface Water (A1) Salt Crust (B11) High Water Table (A2) Aquatic Invertebrates (B13) Saturation (A3) Hydrogen Sulfide Odor (C1) Water Marks (B1) Dry -Season Water Table (02) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Drift Deposits (B3) (where not tilled) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Iron Deposits (B5) Thin Muck Surface (C7) — Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Water -Stained Leaves (B9) Secondary Indicators minifnum of two re uired Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) — Crayfish Burrows (08) Saturation Visible on Aerial Imagery (C9) X Geomorphic Position (D2) — FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR G Lat: 40.424117°N Soil Map Unit Name: Nunn clay loam, 1 to 3 percent slopes City/County: Greeley/Weld Sampling Date: 6/29/2023 State: CO Sampling Point: DP - Al w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 1 Long: -104.573323°W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Soil Wetland Hydrology i Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Present? Yes X No Present? Yes X No Remarks: Data point within the northwestern portion of the survey area. Wetland data point is within the fringe wetlands of an outlet ditch. Paired with data point DP Al u. VEGETATION -- Use scientific names of plants. Tree Stratum 1. 2_ 3_ 4. (Plot size: 30 saplin_o/Shrub Stratum 1. 2. 3, 4 5 (Plot size: 15 Herb Stratum (Plot size: 5 1. Phalaris arundinacea 2. Asc/epias speciosa 3. Rumex crispus 4. Lactuca serriola 5. 6. 7. 8. 9. 10_ V ood_v Vine Stratum (Plot size: 5 1. 2. % Bare Ground in Herb Stratum 25 Absolute Dominant Indicator % Cover Species? Status 30 15 5 =Total Cover =Total Cover Yes FACW Yes FAC No FAC 25 Yes UPL 75 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 2 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 66.7% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 30 x 2 = 60 FAC species 20 x 3 = 60 FACU species 0 x 4 = 0 UPL species 25 x 5 = -125 Column Totals: 75 (A) 245 (B) Prevalence Index = B/A = 3.27 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% 3 - Prevalence Index is 53.01 4 - Morphological Adaptations) (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation) (Explain) Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes X No Remarks: Data point in the wetlands dominated by hydrophytic vegetation. ENG FORM 6116-5, JUL 2018 Great Rains — Version 2.0 11.11 SOIL Sampling Point: DP - Alw Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) 0-8 8-18 Matrix Color (moist) OA 10YR 2/2 100 10YR 2/1 90 Redox Features Color (moist) % Type' Loc2 7.5YR 4/6 10 Texture Loamy/Clayey Remarks Loamy/Clayey Prominent redox concentrations '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 otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 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 (51) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) X Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA72 & 73 of LRR H) Indicators for Problematic Hydric Soils: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes X Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required: check all that apply) X Surface Water (Al) X High Water Table (A2) X Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (03) (where not tilled) Presence of Reduced Iron (C4) — Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators iirirlirrium of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (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) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes X Yes X Yes X No Depth (inches): 0 No Depth (inches): 2 No Depth (inches): 4 I Wetland Hydrology Present? Yes X No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available. Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms City/County: Greeley/Weld Applicant/Owner: J&T Consultants, Inc. Investigator(s): M. Boyer Landform (hillside, terrace, etc.): Drainage Subregion (LRR): LRR G Sampling Date: 6/29/2023 State: CO Sampling Point: DP - A2U Section, Township, Range: 8,5N, 64 W Local relief (concave, convex, none): Concave Slope (%): Lat: 40.422412°N Long: -104.573350°W Soil Map Unit Name: Vona sandy loam, 1 to 3 percent slopes 2 Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Is the Sampled Area within a Wetland? Yes No X Hydrophytic Hydric Soil Wetland Vegetation Present? Yes No X Present? Yes No X Hydrology Present? Yes No X Remarks: Data point point DP within the western portion of the survey area. Upland data point A2w. outlet ditch is above the bank of the Ogilvy within uplands. Paired with data VEGETATION — Use scientific names of plants. Tree Stratum I. 2. 3_ 4. (Plot size: 30 Sapling/Shrub Stratum (Plot size: 15 ) 1 2_ 3 4. 5 Herb Stratum (Plot size: 5 Absolute Dominant Indicator % Cover Species? Status =Total Cover =Total Cover 1. Descurainia sophia 20 Yes UPL 2. Brom us tectorum 15 Yes UPL 3. Chenopoaiium album 15 Yes FACU 4. Convolvulus arvensis 5. Mirabilis linearis 6. 7. 8. 9. 10 Woody Vine Stratum (Plot size: 5 1. 2. % Bare Ground in Herb Stratum 25 15 Yes UPL 10 No UPL 75 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 4 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 0 x 2 = 0 FAC species 0 x 3 = 0 FACU species 15 x 4 = 60 UPL species 60 x 5 = 300 Column Totals: 75 (A) 360 (B) Prevalence Index = B/A = 4.80 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is 53.01 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes Remarks: Data point in the uplands with no dominant hydrophytic vegetation. ENG FORM 6116-5, JUL 2018 Great Plains —Version ?.0 SOIL Sampling Point: DP - A2U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) Matrix Redox Features Color (moist) OA 0-8 10YR 4/4 100 8-18 10YR 4/3 100 Color (moist) Type' Loc2 Texture Loamy/Clayey Loamy/Clayey 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Remarks 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Sandy Gleyed Matrix (S4) Histic Epipedon (A2) Sandy Redox (S5) Black Histic (A3) Stripped Matrix (S6) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) 1 cm Muck (A9) (LRR F, G, H) Depleted Matrix (F3) Depleted Below Dark Surface (A11) Redox Dark Surface (F6) Thick Dark Surface (Al2) Depleted Dark Surface (F7) Sandy Mucky Mineral (S1) Redox Depressions (F8) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) 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) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes Remarks: Soils are light colored and dry. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Surface Water (Al) Salt Crust (B11) High Water Table (A2) Aquatic Invertebrates (B13) Saturation (A3) Hydrogen Sulfide Odor (C1) Water Marks (B1) Dry -Season Water Table (C2) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots (C3) Drift Deposits (B3) (where not tilled) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Iron Deposits (B5) Thin Muck Surface (C7) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) Water -Stained Leaves (B9) Secondary Indicators (minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (08) Saturation Visible on Aerial Imagery (09) X Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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 Project/Site: Ogilvy River Farms ApplicantlOwner: J&T Consultants, Inc. OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) City/County: Greeley/Weld Investigator(s): M_ Boyer Landform (hillside, terrace, etc.) field Subregion (LRR): LRR G Sampling Date: 6/29/2023 State: CO Sampling Point: DP - A2w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 1 Lat: 40.422447°N Long: -104.573472°W Soil Map Unit Name: Nunn clay loam, 1 to 3 percent slopes Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS -- Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Wetland Soil Hydrology Vegetation Present? Present? Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Yes X No Yes X No Remarks: Data A2u. point within the western portion of the survey area. Wetland data point is within the fringe wetlands of an outlet ditch. Paired with data point DP VEGETATION — Use scientific names of plants. Tree Stratum 1 2. 3. 4 Absolute Dominant Indicator (Plot size: 30 ) % Cover Species? Status SaplinfaiShrub Stratum 1 Safix lasiandra 2. 3 4, 5 (Plot size: 15 Herb Stratum (Plot size: 5 1. Conium maculatum =Total Cover 50 Yes FACW 50 =Total Cover 20 Yes FACW 2. Urtica dioica 10 10 3. Rumex crispus 4. Echinochloa crus-galli 5_ 6 7. 8 9. 10. WOQdv Vine_ Stratum (Plot size: 40 ) 1 2. % Bare Ground in Herb Stratum 25 No FAC No FAC 20 Yes UPL 60 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 2 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 66.7% (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 70 x 2 = 140 FAC species 20 x 3 = 60 FACU species 0 x 4 = 0 UPL species 20 x 5 = 100 Column Totals: 110 (A) 300 (B) Prevalence Index = B/A = 2.73 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% X 3 - Prevalence Index is 53.01 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes Remarks: Data point in the wetlands dominated by hydrophytic species. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - A2w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) 0-2 Matrix Color (moist) 10YR 2/2 100 2-8 10YR 2/2 90 8-18 10YR 2/1 85 Redox Features Color (moist) % Type' 7.5YR 4/6 7.5YR 4/6 Loc2 10 C M 85 Texture Loamy/Clayey Remarks Loamy/Clayey Prominent redox concentrations Loamy/Clayey Prominent redox concentrations '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 otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (All) 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) Restrictive Layer (if observed): Type: Depth (inches): Sandy Gleyed Matrix (S4) Sandy Redox (55) Stripped Matrix (56) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) X Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils0: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (57) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Hydric Soil Present? Yes X No Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Surface Water (Al) X High Water Table (A2) X Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators Jminimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (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) r Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes X Yes X No X Depth (inches): No Depth (inches): 2 No Depth (inches): 4 Wetland Hydrology Present? Yes X No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR G Lat: 40.421375°N Soil Map Unit Name: Vona sandy loam, 1 to 3 percent slopes City/County: Greeley/Weld Sampling Date: 6/29/2023 State: CO Sampling Point: DP - B1u Section, Township, Range: 8,5N, 64 W Local relief (concave, convex, none): Concave Slope r/o): 2 Long: -104.574136°W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Is the Sampled Area within a Wetland? Yes No X Hydrophytic Hydric Soil Wetland Hydrology Vegetation Present? Present? Yes No X Yes No X Present? Yes No X Remarks: Data point within data point DP B1 the western portion of the survey area. Upland data point w. is north of the South Platte River riparian corridor within uplands. Paired with VEGETATION — Use scientific names of plants. 'tree stratum, (Plot size: 30 1. 2. 3_ 4 S aoling/Shrub Stratum 1. 2. 3 4. 5 (Plot size: 15 Herb Stratum (Plot size: 1. Descurainia sophia _ 5 Absolute Dominant Indicator % Cover Species? Status 20 2. Bromus tectorum 20 3. Onopordum acanthium 4. Convolvulus arvensis 5. Bassia scoparia 6. 7. 8. 9. 10 Woody Vine Stratum, (Plot size: 5 1. 2. % Bare Ground in Herb Stratum 30 10 10 10 =Total Cover =Total Cover Yes UPL Yes UPL No UPL No UPL No FACU 70 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 2 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 0 x 2 = 0 FAC species 0 x 3 = 0 FACU species 10 x 4 = 40 UPL species 60 x 5 = 300 Column Totals: 70 (A) 340 (B) Prevalence Index = B/A = 4.86 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is 53.01 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No X Remarks: Data point in the uplands with no dominant hydrophytic vegetation. ENG FORM 6116-5, JUL 2018 Great Plains - Version 2.0 SOIL Sampling Point: DP - B1 u Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix (inches) Color (moist) 0-6 10YR 4/4 6-16 100 10YR 3/3 100 Redox Features Color (moist) Type' Loc2 Texture Loamy/Clayey Loamy/Clayey 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix. CS=Covered or Coated Sand Grains. Remarks 2Location: PL=Pore Linir g, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (All) 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) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (SO) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes No X Remarks: Soils are light colored and dry. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (O2) Oxidized Rhizospheres on Living Roots (03) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two_ required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (08) Saturation Visible on Aerial Imagery (C9) w X Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available' Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld Sampling Date: 6/29/2023 Investigator(s): M. Boyer Landform (hillside, terrace, etc.): terrace Subregion (LRR): LRR G Lat: 40.421219°N State: CO Sampling Point: DP - B1 w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 1 Long: -104.574437°W Datum: NAD83 Soil Map Unit Name: Vona sandy loam, 1 to 3 percent slopes NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Wetland Soil Hydrology Vegetation Present? Present? Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Yes X No Yes X No Remarks: Data point within the western B1 u. Wetland data point is within the wetlands of the South Platte River. Paired with data point DP portion of the survey area. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status 1. Populus deltoides 2. 3 4 Sapling Shrub Stratum (Plot size: 15 1 2.. 4. 5 Herb Stratum (Plot size: 5 40 Yes FAC 40 =Total Cover =Total Cover 1. Conium maculatum 25 Yes FACW 2. Phalaris arundinacea 20 Yes FACW 3. Cirsium arvense 10 No FACU 4. Typha angustifalia 25 Yes UPL 5. 6. 7. 8. 9. 10 Woody Vine Stratum (Plot size: 40 ) 1 2. % Bare Ground in Herb Stratum 20 80 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 3 (A) Total Number of Dominant Species Across All Strata: 4 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 75.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 45 x 2 = 90 FAC species 40 x3= 120 FACU species 10 x 4 = 40 UPL species 25 x 5 = 125 Column Totals: 120 (A) 375 (B) Prevalence Index = B/A = 313 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation X 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) Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes Remarks: Data point in the wetlands dominated by hydrophytic species. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - B1 w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) Matrix Color (moist) 0-2 10YR 2/2 2-8 10YR 2/2 8-18 100 90 10YR 4/1 85 Redox Features Color (moist) % Type' 7.5YR 4/6 7.5YR 4/6 Loc2 Texture Remarks Loamy/Clayey 10 C M Loamy/Clayey Prominent redox concentrations 15 C M Loamy/Clayey Prominent redox concentrations 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) X 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) Sandy Gleyed Matrix (S4) Sandy Redox (S5) — Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) X Redox Dark Surface (F6) Depleted Dark Surface (F7) — Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) 2Location: PL=Pore Lining, M=Matrix. Indicators for Problematic Hydric Soils: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes X No Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators minimumof one is required: check all that apply) Surface Water (A1) X High Water Table (A2) X Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (O4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of Mro required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (O3) (where tilled) Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (C9) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes Water Table Present? Saturation Present? (includes capillary fringe) Yes X Yes X No X No No Depth (inches): Depth (inches): 4 Depth (inches): 6 Wetland Hydrology Present? Yes X No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 U.S. Army Corps of Engineers OMB Control #: 0710-0024, Exp: 11/30/2024 WETLAND DETERMINATION DATA SHEET - Great Plains Region Requirement Control Symbol EXEMPT: See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R (Authority: AR 335-15, paragraph 5-2a) Project/Site: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: GreeleyM/eld Sampling Date: 6/29/2023 Investigator(s): M. Boyer Landform (hillside, terrace, etc_): field Subregion (LRR): LRR G Lat: 40 41941°N State: CO Sampling Point: DP - B2u Section, Township, Range: 8,5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 2 Soil Map Unit Name: Haverson loam, 1 to 3 percent slopes Long: -104.568817°W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation Are Vegetation Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Wetland Soil Hydrology Vegetation Present? Present? Yes No X Is the Sampled within a Area Wetland? Yes No X Yes No X Present? Yes No X Remarks: Data point within B2w. the western portion of the survey area. Upland data point is north of the mesic mosiac field within uplands. Paired with data point DP VEGETATION -- Use scientific names of plants. Tree. Stratum 1. 2 3 4. (Plot size: 30 Sapling/Shrub Stratum 1. 2, 3, 4. 5 (Plot size: 15 ) Herb Stratum (Plot size: 5 ) 1. Descurainia sophia 2. Cirsium arvense 3. Hordeum jubatum 4. x Triticale 5. Chenopodium album 6. 7. 8. 9. 10. r ody Vine Stratum 1, 2. (Plot size: 5 Bare Ground in Herb Stratum 25 Absolute Dominant Indicator % Cover Species? Status 20 =Total Cover =Total Cover Yes UPL 25 Yes FACU 10 No 10 No 10 No 75 =Total Cover =Total Cover FACW UPL FACU Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 2 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 10 x 2 = 20 FAC species 0 x 3 = 0 FACU species 35 x 4 = 140 UPL species 30 x 5 = 150 Column Totals: 75 (A) 310 (B) Prevalence Index = B/A = 4.13 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.0' 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) ' Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No X Remarks: Data point in the uplands with no dominant hydrophytic vegetation. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - B2u Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) 0-6 6-16 Matrix Color (moist) 10YR 3/4 100 10YR 3/3 100 Redox Features Color (moist) % Type1 Loc2 Texture Loamy/Clayey Loamy/Clayey Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Remarks 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (All) 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) Sandy Gleyed Matrix (54) 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) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soilsa: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes Remarks: Soils are light colored and dry. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required: check all that aogly) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (02) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (07) Other (Explain in Remarks) Secondary Indicators (minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (03) (where tilled) Crayfish Burrows (08) Saturation Visible on Aerial Imagery (09) X Geomorphic Position (D2) FAC-Neutral Test (05) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld Sampling Date: 6/29/2023 Investigator(s): M Boyer Landform (hillside, terrace, etc.): terrace Subregion (LRR): LRR G Lat: 40.419324°N State: CO Sampling Point: DP - B2w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 1 Soil Map Unit Name: Haverson loam, 1 to 3 percent slopes Long: -104.568847°W Datum: NAD83 Are climatic / hydrologic conditions on the site typical for this time of year? Are Vegetation , Soil Are Vegetation , Soil , or Hydrology , or Hydrology NWI classification: None Yes X No (If no, explain in Remarks.) significantly disturbed? Are "Normal Circumstances" present? Yes X No naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Wetland Vegetation Soil Present? Hydrology Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Yes X No Present? Yes X No Remarks: Data data central portion of the survey area. Wetland data point is within themesic mosaic field north of the South Platte River. Paired with point within the point DP B2u. VEGETATION — Use scientific names of plants. Tree_Stratum 1 2. 3. 4 (Plot size: 30 Sapling/Shrub Stratum 1. 2, 3 4. 5 (Plot size: 15 Herb Stratum (Plot size: 5 ) 1. Eleocharis palustris 2. Phalaris arundinacea 3. Capsella bursa-pastoris 4. Hordeum jubatum 5. Descurainia sophia 6. 7 8. 9 10. Woody Vnne Stratum (Plot size: 40 1 2 % Bare Ground in Herb Stratum 10 Absolute Dominant Indicator Cover Species? Status 30 =Total Cover =Total Cover Yes OBL 25 Yes FACW 5 No FACU 20 Yes FACW 10 No UPL 90 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 3 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 30 x 1 = 30 FACW species 45 x 2 = 90 FAC species 0 x 3 = 0 FACU species 5 x 4 = 20 UPL species 10 x 5 = 50 Column Totals: 90 (A) 190 (B) Prevalence Index = B/A = 2.11 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% X 3 - Prevalence Index is ≤3.0' 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes X Remarks: Data point in the wetlands dominated by hydrophytic species. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - B2w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) Matrix Color (moist) 0/0 0-2 10YR 3/2 100 2-8 8-18 10YR 2/2 90 10YR 2/1 85 Redox Features Color (moist) % Type' Loc2 7.5YR 4/6 7.5YR 4/6 10 15 Texture Loamy/Clayey Remarks Loamy/Clayey Prominent redox concentrations Loamy/Clayey Prominent redox concentrations 1Type: 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 otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 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) Restrictive Layer (if observed): Type: Depth (inches): Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) X Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (37) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Hydric Soil Present? Yes X No Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators ((minimum of one is required: check all that apply Surface Water (Al) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) X Oxidized Rhizospheres on Living Roots (03) (where not tilled) Presence of Reduced Iron (C4) - Thin Muck Surface (07) Other (Explain in Remarks) Secondary Indicators (minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (03) (where tilled) Crayfish Burrows (08) Saturation Visible on Aerial Imagery (09) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (O7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes X No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms City/County: Greeley/Weld Applicant/Owner: J&T Consultants. Inc. Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR G Lat: 40.419249°N Sampling Date: 6/29/2023 State: CO Sampling Point: DP - B3u Section, Township, Range: 8,5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 2 Soil Map Unit Name: Haverson loam, 1 to 3 percent slopes Are climatic / hydrologic conditions on the site typical for this time of year? Are Vegetation , Soil Are Vegetation , Soil SUMMARY OF FINDINGS , or Hydrology or Hydrology Long: -104.567292°W Datum: NAD83 NWI classification: None Yes X No (If no, explain in Remarks.) significantly disturbed? Are "Normal Circumstances" present? Yes X No naturally problematic? (If needed, explain any answers in Remarks ) Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Hydric Soil Present? Wetland Hydrology Present? Yes Yes Yes No X Is the Sampled within a Wetland? Area Yes No X No X No X Remarks: Data point within the central B3w. portion of the survey area. Upland data point is north of the mesic mosiac field within uplands. Paired with data point DP VEGETATION — Use scientific names of plants. Tree Stratum 1. 2 3 4 (Plot size: 30 ) Sapling/Shrub Stratum 1. 2. 3. 4. 5 (Plot size: 15 ) Herb Stratum (Plot size: 1. Descurainia sophia 5 2. Cirsium arvense 3. Pascopyrum smith!! 4. Thiaspi arvense 5. Hordeum 1ubatum 6. 7. 8. 9. 10 Woody Vine Stratum (Plot size: 5 1. 2 % Bare Ground in Herb Stratum 20 Absolute Dominant Indicator % Cover Species? Status Dominance Test worksheet: 20 =Total Cover =Total Cover Yes UPL 15 No FACU 25 Yes FACU 10 No UPL 10 No 80 =Total Cover =Total Cover FACW Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 2 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 10 x 2 = 20 FAC species 0 x 3 = 0 FACU species 40 x 4 = 160 UPL species 30 x 5 = 150 Column Totals: 80 Prevalence Index = B/A = (A) 330 (B) 4.13 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation) (Explain) 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No Remarks: Data point in the uplands with no hydrohpytic vegetation. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 Depth (inches) SOIL Sampling Point: DP - B3u Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Matrix Color (moist) % Color (moist) % Type' Loc2 Texture Redox Features 0-8 10YR 3/4 100 8-18 10YR 3/2 100 Loamy/Clayey Loamy/Clayey 'Type: C=Concentration, D=Depoetion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 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 (52) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) Restrictive Layer (if observed): Type: Depth (inches): 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) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Remarks 2Location: PL=Pore Lining,, M=Matrix, Indicators for Problematic Hydric Soils`': 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Hydric Soil Present? Yes Remarks: Soils are light colored and dry. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required: check all that apply) Surface Water (Al) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (03) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indic or jrniriirnum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (09) X Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms City/County: Greeley/Weld Applicant/Owner: J&T Consultants, Inc. Investigator(s): M. Boyer Sampling Date: 6/29/2023 State: CO Sampling Point: DP - B3w Section, Township, Range: 8, 5N, 64 W Landform (hillside, terrace, etc ) terrace Local relief (concave, convex, none): Concave Subregion (LRR) LRR G Lat: 40.419193°N Long: -104.567512°W Soil Map Unit Name: Haverson loam, 1 to 3 percent slopes Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No Are Vegetation Are Vegetation Slope (%): 1 Datum: NAD83 NWI classification: None (If no, explain in Remarks.) Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Wetland Vegetation Soil Present? Hydrology Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Yes X No Present? Yes X No Remarks: Data point within data point DP the B3u. is within the mesic mosaic field north of the South Platte River. Paired with central portion of the survey area. Wetland data point VEGETATION -- Use scientific names of plants. Tree Stratum (Plot size: 30 ) 1. 2. 3. 4. Sapling/Shrub Stratum 1 2 3. 4. 5 (Plot size: 15 Herb Stratum (Plot size: 1. Rumex crispus 5 2. Phalaris arundinacea 3. Thlaspi arvense 4. Hordeum jubatum 5. Elymus trachycaulus 6. 7. 8. 9. 10. Woody Vine Stratum 1_ 2. (Plot size: 40 % Bare Ground in Herb Stratum 10 Absolute Dominant Indicator % Cover Species? Status 15 25 5 30 10 =Total Cover =Total Cover No Yes No Yes No 85 =Total Cover Remarks: Data point in the wetlands dominated by hydrophytic species. =Total Cover FAC FACW FACU FACW FACU Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 2 (A) Total Number of Dominant Species Across All Strata: 2 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 55 x 2 = 110 FAC species 15 x 3 = 45 FACU species 15 x 4 = 60 UPL species 0 x 5 = 0 Column Totals: 85 (A) 215 (B) Prevalence Index = B/A = 2.53 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% X 3 - Prevalence Index is s3.0' 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes X No ENG FORM 61165, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - B3w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) Matrix Redox Features Color (moist) 0-4 10YR 3/2 100 4-8 Color (moist) % Type' Loc2 Texture Loamy/Clay 10YR 2/2 90 7.5YR 4/6 10 C M Loamy/Clayey 8-18 10YR 2/2 85 7.5YR 4/6 15 C M Loamy/Clayey 'Type C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Sandy Gleyed Matrix (S4) Sandy Redox (85) Stripped Matrix (56) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) X Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 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) Restrictive Layer (if observed): Type: Depth (inches): Remarks Prominent redox concentrations Prominent redox concentrations 2Location: PL=Pore Lining, M=Matrix. Indicators for Problematic Hydric Soils''• 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Hydric Soil Present? Yes X No Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check_all that apply) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) — Dry -Season Water Table (C2) X Oxidized Rhizospheres on Living Roots (O3) (where not tilled) — Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (O8) Saturation Visible on Aerial Imagery (C9) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes X No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR G Lat: 40.418269°N Soil Map Unit Name: Aquolls and Aquents, gravelly substratum Sampling Date: 6/29/2023 State: CO Sampling Point: DP - B4u Section, Township, Range: 8,5N, 64 W Local relief (concave, convex, none): Concave Slope (%): Long: -104.565956°W 2 Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation Are Vegetation Soil , or Hydrology , Soil , or Hydrology significantly disturbed? naturally problematic? Are "Normal Circumstances" present? Yes X No (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 1 Remarks: Data point within the eastern portion of the DP B4w. survey area. Upland data point is northeast of the mesic mosiac field within uplands. Paired with data point VEGETATION — Use scientific names of plants. Tree Stratum 1 2. 3 4 (Plot size: 30 SapiingiSbrub Stratum 1 2. 3. 4. 5 (Plot size: 15 HerbyStrait) m (Plot size' 1. Descurainia sophia 5 2. Cirsium arvense 3. Capsella bursa-pastoris 4. Pascopyrum smithii 5. Bromus inermis 6. 7. 8. 9. 10. Woody Vine Stratum 1. 2.. (Plot size: 5 % Bare Ground in Herb Stratum 10 Absolute Dominant Indicator % Cover Species? Status 10 10 25 20 25 =Total Cover =Total Cover No UPL No FACU Yes Yes Yes 90 =Total Cover Remarks: Data point in the uplands with no dominant hydrohpytic vegetation. =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (NB) Prevalence Index worksheet: Total % Cover of: OBL species FACW species Multiply by: o x1= 0 0 x2= 0 FAG species 0 x 3 = 0 FACU species 35 x 4 = 140 UPL species 55 x 5 = 275 Column Totals: 90 (A) 415 (B) FACU I Prevalence Index = B/A = 4.61 UPL UPL Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is 53.01 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hyd rophytic Vegetation Present? Yes No X ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - B4u Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix (inches) Color (moist) % Color (moist) % Type' Redox Features 0-8 10YR 4/4 100 8-18 10YR 3/4 100 Loc2 Texture Loamy/Clayey Loamy/Clayey 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Remarks 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 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 (32) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) 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) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (57) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes No X Remarks: Soils are light colored and dry. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) — Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (04) — Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two reauired) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (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) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available - Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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 #: 0790-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld Sampling Date: 6/29/2023 Investigator(s): M. Boyer Landform (hillside, terrace, etc.): terrace Subregion (LRR): LRR G Lat: 40.418115°N State: CO Sampling Point: DP - B4w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): Soil Map Unit Name: Aquolls and Aquents, gravelly substratum Long: -104.566013°W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Soil Wetland Hydrology Vegetation Present? Present? Yes X No No No Is the Sampled Area within a Wetland? Yes X No Yes X Present? Yes X Remarks: Data point within the eastern portion of the survey area. Wetland data point is within the mesic mosaic field north of the South data point DP B4u. Platte River. Paired with VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status 1. 2. 3 4 Sapling/ Shrub Stratum (Plot size: 15 ) 1 2. 3. 4 5 Herb t fljjtl (Plot size: 5 1. Eleocharis palustris 2. Phalaris arundinacea 3. Capsella bursa-pastoris 4. Hordeum jubatum 5. 6. 7_ 8. 9. 10. Woody Vine Stratum (Plot size: 40 1. 2. % Bare Ground in Herb Stratum 30 20 =Total Cover =Total Cover Yes OBL 25 Yes FACW 3 No FACU 20 Yes FACW 70 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 3 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 20 x 1 = 20 FACW species 45 x 2 = 90 FAC species 0 x 3 = 0 FACU species 5 x 4 = 20 UPL species 0 x 5 = 0 Column Totals: 70 (A) 130 (B) Prevalence Index = B/A = 1 86 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% X 3 - Prevalence Index is ≤3.01 4 - Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation (Explain) Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes X No Remarks: Data point in the wetlands dominated by hydrophytic species. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 Depth (inches) 0-2 SOIL Sampling Point: DP - B4w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Matrix Redox Features Color (moist) % Color (moist) % Type' Loc2 Texture 2-8 8-18 10YR 3/2 10YR 2/2 10YR 2/1 100 90 85 7.5YR 4/6 7.5YR 4/6 10 C M 15 C M Loamy/Clayey Remarks Lcanry/Caay Prominent redox concentrations Loamy/Clayey Prominent redox concentrations `Type. C=Concentration, D=Depa tion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (All) 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 (33) (LRR F) Sandy Gleyed Matrix (S4) Sandy Redox (35) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) X Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) 2Location: PL=Pore Lining, M=Matrix, 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) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes X No Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary indicators 'minimum of one is required check all that a •ply) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) - Salt Crust (B11) Aquatic Invertebrates (B13) — Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) X Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) — Thin Muck Surface (07) Other (Explain in Remarks) condary Indicators (minimum of two rewired) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (03) (where tilled) Crayfish Burrows (08) Saturation Visible on Aerial Imagery (09) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes X No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms City/County: Greeley/Weld Applicant/Owner: J&T Consultants, Inc. Investigator(s): M, Boyer Sampling Date: 6/29/2023 State: CO Sampling Point: DP - B5u Section, Township, Range: 9, 5N, 64 W Landform (hillside, terrace, etc.): field Local relief (concave, convex, none): Concave Slope (%): 1 Subregion (LRR): LRR G Lat: 40.414496°N Long: -104.563966°W _ Datum: NAD83 Soil Map Unit Name: Ellicott -Ellicott sandy -skeletal complex, 0 to 3 percent slopes, rarely flooded NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No Are Vegetation Are Vegetation (If no, explain in Remarks.) Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No , Soil , or Hydrology 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: Data point within the B5w. eastern portion of the survey area. Upland data point is east of the mesic mosiac field within uplands. Paired with data point DP VEGETATION — Use scientific names of plants. Tree Stratum 1. 2. 3: 4 (Plot size: 30 Sapiin2/Shrub Stratum (Plot size: 15 ) 1 Symphoricarpos occidentalis 2. 3. 4. 5. Herb Stratiri (Plot size: 5 1. Chenopodium album 2. Cirsium arvense 3. Lepidium latifolium 4. Arctium minus 5. Capsella bursa-pastoris 6. 7. 8. 9. ) 10. Woody Vine Stratum 1. 2 (Plot size: 5 Bare Ground in Herb Stratum 25 Absolute Dominant Indicator % Cover Species? Status =Total Cover 15 Yes UPL 15 =Total Cover 20 20 10 5 20 Yes Yes No No Yes 75 =Total Cover =Total Cover FACU FACU FACW UPL FACU Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 4 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) Prevalence Index worksheet: Total %Q Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 10 x 2 = 20 FAC species 0 x 3 = 0 FACU species 60 x 4 = 240 UPL species 20 x 5 = 100 Column Totals: 90 (A) 360 (B) Prevalence Index = B/A = 4.00 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.0' 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No X Remarks: Data point in the uplands with no dominant hydrohpytic vegetation. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - B5u Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) 0-6 10YR 4/4 100 6-18 10YR 3/4 100 Color (moist) Type' Loc2 Texture Loamy/Clayey Loamy/Clayey 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains Remarks 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Sandy Gleyed Matrix (S4) Histic Epipedon (A2) Sandy Redox (S5) Black Histic (A3) Stripped Matrix (S6) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) 1 cm Muck (A9) (LRR F, G, H) Depleted Matrix (F3) Depleted Below Dark Surface (A11) Redox Dark Surface (F6) Thick Dark Surface (Al2) Depleted Dark Surface (F7) Sandy Mucky Mineral (S1) Redox Depressions (F8) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) Restrictive Layer (if observed): Type: Depth (inches): 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) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Hydric Soil Present? Yes No X Remarks: Soils are light colored and dry_ HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required: check all that apply) Surface Water (Al) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (O3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) No X No X No X Depth (inches): Depth (inches): Depth (inches): Secoridary Indicators (minimum of two required Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (O3) (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) Wetland Hydrology Present? Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Yes No X Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2M 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. Investigator(s): M. Boyer Landform (hillside, terrace, etc_): field Subregion (LRR): LRR G City/County: Greeley/Weld Sampling Date: 6/29/2023 State: CO Sampling Point: DP - B5w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 2 Lat: 40.414244°N Long: -104.564108°W Soil Map Unit Name: Ellicott -Ellicott sandy -skeletal complex, 0 to 3 percent slopes, rarely flooded Are climatic / hydrologic conditions on the site typical for this time of year? Are Vegetation , Soil Are Vegetation , Soil SUMMARY OF FINDINGS or Hydrology or Hydrology Datum: NAD83 NWI classification: None Yes X No (If no, explain in Remarks.) significantly disturbed? Are "Normal Circumstances" present? Yes X No naturally problematic? (If needed, explain any answers in Remarks.) Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Soil Wetland Hydrology Vegetation Present? Present? Yes X No Is the Sampled Area within a Wetland? Yes X No No Yes X Present? Yes X No within Wetland data point Remarks: Data point with data point the eastern portion of the survey area. DP B5u. is within the mesic mosaic field northeast of the South Platte River. Paired VEGETATION — Use scientific names of plants. Tree Stratum 1. Salix fragilis (Plot size: 30 2. Salix arnygdaloides 3. Populus deltoides 4. SaolinalShrub Stratum 1 2. 3. 4. 5. (Plot size: 15 Herb Stratum (Plot size: 1. Coniurn maculatum 2. Chenopodium album 5 3. Phragmites australis 4. 5. 6. 7. 8 9. 10. Woody Vine Stratum (Plot size: 40 1 2 % Bare Ground in Herb Stratum 30 Absolute % Cover 30 15 20 Dominant Indicator Species? Status Yes Yes Yes 65 =Total Cover =Total Cover FAC FACW FAC 20 Yes FACW 5 No FACU 45 Yes FACW 70 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 5 (A) Total Number of Dominant Species Across All Strata: 5 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% _ (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 80 x 2 = 160 FAG species 50 x 3 = 150 FACU species 5 x 4 = 20 UPL species 0 x 5 = 0 Column Totals: 135 (A) 330 (B) Prevalence Index = B/A = 2.44 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) 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes Remarks: Data point in the wetlands dominated by hydrophytic species ENS FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - B5w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) Matrix Color (moist) 0-2 10YR 2/2 100 2-10 10YR 2/2 90 10-18 10YR 4/1 90 Redox Features Color (moist) % Type' 7.5YR 4/6 7.5YR 4/6 10 10 C Loc2 M Texture Loamy/Clayey Remarks Loamy/Clayey Prominent redox concentrations Loamy/Clayey Prominent redox concentrations '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 otherwise noted.) Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) X Depleted Below Dark Surface (A11) Thick Dark Surface (Al2) Sandy Mucky Mineral (S1) 2 5 cm Mucky Peat or Peat (32) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) Sandy Gleyed Matrix (S4) Sandy Redox (S5) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) X Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soils°: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (37) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) — Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes X Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is reauired: check all that apply) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (O2) X Oxidized Rhizospheres on Living Roots (O3) (where not tilled) Presence of Reduced Iron (O4) — Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (niinimuni of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (C9) Geomorphic Position (D2) FAG -Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes X No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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 Project/Site: Ogilvy River Farms Applicant/Owner: J&T Consultants. Inc OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) City/County: Greeley/Weld Sampling Date: 6/2912023 Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR G Lat: 40.410575°N State: CO Sampling Point: DP - B6u Section, Township, Range: 9, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 1 Long: -104.564050°W Datum: NAD&3 Soil Map Unit Name: Ellicott -Ellicott sandy -skeletal complex, 0 to 3 percent slopes, rarely flooded NWI classification: None • _ Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks ) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Hydric Wetland Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Soil Present? Yes No X Hydrology Present? Yes No X Remarks: Data point B6w. within the southern portion of the survey area. Upland data point is south of the South Platte River within uplands. Paired with data point DP VEGETATION — Use scientific names of plants. Tree Stratum 1. 2. 3, 4 (Plot size: Absolute Dominant Indicator 30 ) % Cover Species? Status Sapling/Shrub_Stratum 1. 2. 3. 4. 5. (Plot size: 15 Herb Stratum (Plot size: 1. Bassia scoparia 5 2. Sporobolus cryptandrus 30 =Total Cover =Total Cover Yes FACU 20 Yes FACU 3. Rumex crispus 5 4. Bouteloua dactyloides 5. 6 7 8. 9. 10. Woody Vine Stratum (Plot size: 5 1. 2. % Bare Ground in Herb Stratum 20 No FAC 25 Yes UPL 80 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 0 x 2 = 0 FAC species 5 x 3 = 15 FACU species 50 x 4 = 200 UPL species 25 x 5 = 125 Column Totals: 80 (A) 340 (B) Prevalence Index = B/A = 4.25 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is 53.01 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 1 Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No X Remarks: Data point in the uplands with no dominant hydrophytic vegetation. ENG FORM 6116-5, J U L 2018 Great Plains -- Version 2.0 Depth (inches) 0-8 8-18 SOIL Sampling Point: DP - B6u Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Matrix Redox Features Color (moist) % Color (moist) % Type1 Loc2 Texture 10YR 3/4 100 10YR 3/3 100 Loamy/Clayey Loamy/Clayey 'Type: C=Concentration. D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Hydric Soil Indicators: (Applicable to all LRRs, Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (All) 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) unless 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) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Remarks 2Location: PL=Pore Lining, M=Matrix. Indicators for Problematic Hydric SoilsJ: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes No X Remarks: Soils are light colored and dry. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required: check all that apply) Surface Water (Al) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (O2) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (O4) Thin Muck Surface (C7) Other (Explain in Remarks) SeCondaryinclicators (minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (O3) (where tilled) Crayfish Burrows (O8) Saturation Visible on Aerial Imagery (O9) X Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld Sampling Date: 6/29/2023 Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR. G Lat: 40.410926°N State: CO Sampling Point: DP - B6w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 2 Long: -104.564135°W Datum: NAD83 Soil Map Unit Name: Ellicott -Ellicott sandy -skeletal complex, 0 to 3 percent slopes, rarely flooded NWI classification: PEM1A Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology 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 within the southern portion of the survey area Wetland data point is south of the South Platte River. Paired with data point DP B6u. VEGETATION - Use scientific names of plants. Tree Stratum 1. 2. 3, 4 (Plot size: 30 Sect/Shrub Stratum 1. Populus deltoides 2. 3. 4. 5 (Plot size: 15 Herb Stratum (Plot size: 5 Absolute Dominant Indicator % Cover Species? Status =Total Cover FAC 10 Yes FAC 10 =Total Cover 1 _ Phragmites australis 60 Yes FACW 2 Phalaris arundinacea 20 Yes FACW 3_ 4. 5 6 7 8. 9. 10. Woody Vine Stratum (Plot size: 40 ) 1. 2. % Bare Ground in Herb Stratum 20 80 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 3 (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 80 x 2 = 160 FAC species 10 x 3 = 30 FACU species 0 x 4 = 0 UPL species 0 x 5 = 0 Column Totals: 90 (A) 190 (B) Prevalence Index = B/A = 2.11 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 Vegetation1 (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes X No Remarks: Data point in the wetlands dominated by hydrophytic species. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 Depth (inches) SOIL Sampling Point: DP - B6w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Matrix Redox Features Color (moist) % Color (moist) % Type' Loc2 Texture 0-2 10YR 3/2 100 2-10 10YR 2/2 90 10-18 10YR 4/1 90 7.5YR 4/6 10 C M 7.5YR 4/6 10 Loamy/Clayey Remarks Loamy/Clayey Prominent redox concentrations Loamy/Clayey Prominent redox concentrations 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains_ Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Sandy Gleyed Matrix (S4) Histic Epipedon (A2) Sandy Redox (55) Black Histic (A3) Stripped Matrix (56) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) 1 cm Muck (A9) (LRR F, G, H) Depleted Matrix (F3) X Depleted Below Dark Surface (A11) X Redox Dark Surface (F6) Thick Dark Surface (Al2) Depleted Dark Surface (F7) Sandy Mucky Mineral (S1) Redox Depressions (F8) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) 5 cm Mucky Peat or Peat (83) (LRR F) (MLRA 72 & 73 of LRR H) 2Location: PL=Pore Lining, M=Matrix 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) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes X No Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: PrimaryIndicators_(minimum of one is rewired; check all that apply, Surface Water (Al) X High Water Table (A2) X Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (02) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Seconda Indicators minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (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) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes X Yes X No X No No Depth (inches): Depth (inches): 2 Depth (inches): 4 Wetland Hydrology Present? Yes Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR G Lat: 40.421105°N City/County: Greeley/Weld Sampling Date: 6/29/2023 State: CO Sampling Point: DP - Cl u Section, Township, Range: 9. 5N064 Local relief (concave, convex, none): Concave Slope (%): 1 Long: -104.573440°W Datum: NAD83 Soil Map Unit Name: Ellicott -Ellicott sandy -skeletal complex, 0 to 3 percent slopes, rarely flooded NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Are Vegetation Are Vegetation , Soil , or Hydrology , Soil , or Hydrology significantly disturbed? naturally problematic? Yes X No (If no, explain in Remarks.) Are "Normal Circumstances" present? Yes X No (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Hydric Soil Present? Wetland Hydrology Present? Is the Sampled Area within a Wetland? Yes No X Yes No X Yes No X Yes No X Remarks: Data point within the western portion of the survey area. Upland data point is south of the irrigation ditch within uplands. Paired with data point DP C1w. VEGETATION -- Use scientific names of plants. Tree Stratum (Plot size: 30 1 2. 3. 4 Sapling/Shrub Stratum 1. 2. 3, 4 5. (Plot size: 15 Herb Stratum (Plot size: 5 1. Bassia scoparia _ _ Absolute Dominant Indicator % Cover Species? Status 30 2. Onopordum acanthium 20 3. Cirsium arvense 5 4. Bromus tectorum 30 5. 6. 7. 8. 9. 10. Woody Vine Stratum (Plot size: 5 1. 2 % Bare Ground in Herb Stratum 15 =Total Cover =Total Cover Yes FACU Yes No Yes 85 =Total Cover Remarks: Data point in the uplands with no dominant hydrophytic vegetation. =Total Cover UPL FACU UPL Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: (A) Total Number of Dominant Species Across All Strata: 3 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0 0% (NB) Prevalence Index worksheet: Total % Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 0 x 2 = 0 FAC species 0 x 3 = 0 FACU species 35 x 4 = 140 UPL species 50 x 5 = 250 Column Totals: 85 (A) 390 (B) Prevalence Index = B/A = 4.59 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is ≤3.0' 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes No X ENG FORM 6116-5T ,JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - Cl u Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth (inches) Matrix Redox Features Color (moist) % Color (moist) 0-8 10YR 3/4 100 8-18 10YR 3/3 100 Type1 Lac' Texture Loamy/Clayey Loamy/Clayey 'Type. C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Remarks 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (All) Thick Dark Surface (Al2) Sandy Mucky Mineral (S1) 2.5 cm Mucky Peat or Peat (32) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) Restrictive Layer (if observed): Type: Depth (inches): Sandy Gleyed Matrix (S4) Sandy Redox (55) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) - Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Indicators for Problematic Hydric Soil?: 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Hydric Soil Present? Yes No Remarks: Soils are light colored and dry HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary indicators jminimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (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) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No hydrologic indicators were observed. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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 Project/Site: Ogilvy River Farms Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld OMB Control #: 0710-00241 Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Investigator(s): M. Boyer Landform (hillside, terrace, etc.): field Subregion (LRR): LRR G Lat: 40.410926°N Sampling Date: 6/29/2023 State: CO Sampling Point: DP - C1 w Section, Township, Range: 8, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 3 Long: -104.564135°W Datum: NAD83 Soil Map Unit Name: Ellicott -Ellicott sandy -skeletal complex, 0 to 3 percent slopes, rarely flooded Are climatic / hydrologic conditions on the site typical for this time of year? Are Vegetation , Soil Are Vegetation , Soil SUMMARY OF FINDINGS or Hydrology or Hydrology NWI classification: None Yes X No (If no, explain in Remarks.) significantly disturbed? Are "Normal Circumstances" present? Yes X No naturally problematic? (If needed, explain any answers in Remarks.) 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 X No Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Data point within the western portion of the survey area. Wetland data point is west of the agricultural field. Paired with data point DP C1 u. VEGETATION — Use scientific names of plants. Tree Stratum 1. 2. 3_ 4 (Plot size: 30 Saohin€ rShrub Stratum 1, 2 3. 4. 5 (Plot size: 15 Herb Stratum (Plot size: 1. Typha angustifolia 5 2. Phalaris arundinacea 3. Rumex crispus 4. 5. 6. 7. 8. 9. 10. Woody Vine Stratum 1. 2. (Plot size: 40 % Bare Ground in Herb Stratum 30 Absolute Dominant Indicator % Cover Species? Status =Total Cover =Total Cover FAC 40 Yes OBL 20 Yes FACW 10 No FAC 70 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 2 (A) Total Number of Dominant Species Across All Strata: 2 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (A/B) Prevalence Index worksheet: Total % Cover of: OBL species 40 x 1 = 40 FACW species 20 x 2 = 40 FAC species 10 x 3 = 30 Multiply by: FACU species 0 UPL species 0 Column Totals: 70 Prevalence Index = B/A = x4= 0 x5-- 0 (A) 110 (B) 1.57 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation X 2 - Dominance Test is >50% X 3 - Prevalence Index is 53.01 4 - Morphological Adaptations (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation (Explain) 'indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes X No AIMS Remarks: Data point in the wetlands dominated by hydrophytic species. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: DP - C1 w Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix (inches) Color (moist) % Color (moist) °I° Type' Loc2 Texture Redox Features 0-2 10YR 3/2 2-18 100 10YR 2/2 90 7.5YR 4/6 10 C M Loamy/Clayey Remarks Loamy/Clayey Prominent redox concentrations '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 otherwise noted.) Histosol (Al) Sandy Gleyed Matrix (S4) Histic Epipedon (A2) Sandy Redox (S5) Black Histic (A3) Stripped Matrix (S6) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) Stratified Layers (A5) (LRR F) Loamy Gleyed Matrix (F2) 1 cm Muck (A9) (LRR F, G, H) Depleted Matrix (F3) — Depleted Below Dark Surface (A11) X Redox Dark Surface (F6) Thick Dark Surface (Al2) Depleted Dark Surface (F7) Sandy Mucky Mineral (81) Redox Depressions (F8) 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) High Plains Depressions (F16) 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR H) 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) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Depth (inches): Hydric Soil Present? Yes X No Remarks: Soils had redox concentrations in the matrix. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required: check all that apply) Surface Water (Al) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) X Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two re utred) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (08) Saturation Visible on Aerial Imagery (09) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes No X Depth (inches); 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: Wetland Hydrology Present? Yes X No Remarks: Hydrologic indicators are present. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: 99/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Bernhardt Property Applicant/Owner: J&T Consultants, Inc. City/County: Greeley/Weld Sampling Date: 6/2912023 Investigator(s): M. Boyer Landform (hillside, terrace, etc.): drainage Subregion (LRR): LRR G Lat: 40.421636°N State: CO Sampling Point: UPI Section, Township, Range: 9, 5N, 64 W Local relief (concave, convex, none): Concave Slope (%): 2 Soil Map Unit Name: Haverson loam, 1 to 3 percent slopes Long: -104.568369°W Datum: NAD83 NWI classification: None Are climatic I hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No Are Vegetation , Soil , or Hydrology 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 agricultural field. Remarks: Upland data point located in the northern portion of the survey area in an VEGETATION — Use scientific names of plants. Tree Stratum 1. 2. 3. 4 (Plot size: 30 ) Sapling/Shrub Stratum (Plot size: 15 ) 1 2. 3. 4. 5 Herb Stratum 1. Zea mays 2. 3. 4. 5. 6. 7. 8. 9. (Plot size: 5 10. woody Vine Stratum 1. 2 (Plot size: 5 % Bare Ground in Herb Stratum 0 Absolute Dominant Indicator % Cover Species? Status =Total Cover =Total Cover 90 Yes UPL 90 =Total Cover =Total Cover Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAG: 0 (A) Total Number of Dominant Species Across All Strata: 1 (B) Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (NB) Prevalence Index worksheet: Total °/0 Cover of: Multiply by: OBL species 0 x 1 = 0 FACW species 0 x 2 = 0 FAC species 0 x 3 = 0 FACU species 0 x 4 = 0 UPL species 90 x 5 = 450 Column Totals: 90 (A) 450 (B) Prevalence Index = B/A = 5.00 Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 3 - Prevalence Index is 53.01 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. Hydrophytic Vegetation Present? Yes Remarks: Upland data point with no dominant hydrophytic vegetation. ENG FORM 6116-51 JUL 2018 Great Plains — Version 2.0 SOIL Sampling Point: UP1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix (inches) Color (moist) % Loc2 Texture 0-6 10YR 4/4 6-10 10YR 4/3 100 100 Redox Features Color (moist) % Type' Loamy/Clayey Loamy/Clayey Type: C=Concentration, ft= e00tion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (A1) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) 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) Restrictive Layer (if observed): Type: Gravel Depth (inches): 10 Sandy Gleyed Matrix (S4) Sandy Redox (85) Stripped Matrix (S6) Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Dark Surface (F7) Redox Depressions (F8) High Plains Depressions (F16) (MLRA 72 & 73 of LRR H) Remarks 2Location: PL=Pore Lining, M=Matrix. Indicators for Problematic Hydric Soils" 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (57) (LRR G) High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) Red Parent Material (F21) Very Shallow Dark Surface (F22) Other (Explain in Remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Hydric Soil Present? Yes Remarks: Upland data point within the southeast corner of the survey area. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is reauiired; check all that apply) Surface Water (A1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Salt Crust (B11) Aquatic Invertebrates (B13) — Hydrogen Sulfide Odor (C1) Dry -Season Water Table (02) — Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) — Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two rewired.) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (08) Saturation Visible on Aerial Imagery (09) X Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes MEIBE No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Upland data point in southeast corner of survey area in upland fringe habitat. ENG FORM 6116-5, JUL 2018 Great Plains — Version 2.0 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: 1 Jan Feb Mar Apr May Jun Jul I Oct - Annual Aug Sep Nov Dec r Temperature Average Max. (F) i 50.94 63.52 S 76.14 80.26 77.82 70.53 58.34 47.77 39.02 . 55.29 38.00 42.07 Temperature Average Min. (F) 15.87 21.20 34.6 51.63 62.71 69.44 67.44 58.12 41.71 27.00 16.15 47.45 Average Precipitation g Total (in.) 0.47 0.43 1.84 1.49 1.32 1.11 1.02 0.72 0.52 14.26 , 1.04 1.75 2.71 hi' h ' JM.T Consulting, Inc. Ogilvy River Farm, LW Ogilvy River Farm Pit DRMS 112 Permit Application EXHIBIT L Reclamation Cost A phased and cumulative bonding approach is proposed for the Bernhardt Sand and Gravel 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% 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 s Additional Financial Warranty Required v Cumulative Financial Warranty la $280,758 $280,758 I $3, 377, 836 $3,658,595 J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application 11 im! JET Consulting, Inc. Reclamation Bond Quantities and Costs 2024 j&T Consulting. Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit 2/2712024 22032 09Ivy River Farm Pit Rec Bond Summary of Unlit Costs Direct costs Re -applying topsoil 12" thick Revegetating disturbed area Dewatering full pit Phase 1 Slurry Wall Cost (0-50 ft @ $4/ft-51-70ft@ $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 $392.00 / acre / acre / million gallons / linear foot $200 / acre $2,500 lump sum 1.55% of direct cost 1.05% of direct cost 10.00% of direct cost 12.60% of direct cost 4.25% of direct cost 5.00% of direct cost 9.25% of direct cost J&T Consulting, Inc. Reclamation Bond Quantities and Costs 2024 jat2,. Ogilvy River Farm, LLC Ogilvy River Farm Prt 2/27/2024 22032 Ogilvy River Farm Pit Rec Bond C.&cs Phase la - 71.91 acres (Prior to Exposing Giroundwatorj Reclamation Operation Scarifying - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale Topsoil Placement - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale Revegetate - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale Removal of foundations for Scale House and Scale Mobilization Quantity Unit Unit Cost Cost 71.91 71.91 71.91 50 1.0 ac ac ac cy Is $ 200 $ 1,800 $ 1,000 $ 200.00 $ 2,500 Subtotal Direct Cost Total Direct Cost Overhead and Profit Cost (12.60%) 14.382 129,438 71,910 10,000 2,500 $ 228,230 $ 228,230 $ 28,757 Contract Cost $ 256,987 Project Management (9.25%) $ 23,771 Total Required Financial Warranty For Phase la Phase 1 - 71.91 acres $ 280,758 1 Reclamation Operation Slurry Wall for Phase 1 Removal of Soil from Sediment Ponds and Removal of Berms for Sediment Ponds Dewatering of Pit for Phase 1 Credit for Water Surface - Scarifying - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale Credit Water Surface - Topsoil Placement - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale Credit Water Surface - Revegetate - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale Mobilization Quantity 6.839 16,000 358 (37.63) (37.63) (37.63) 1.0 Unit If cy mg ac ac ac Is Unit Cost Cost 392.00 $ 2.00 $ 400 $ 200 $ 1,800 $ 1,000 $ 2.500 2,680,888 32,000 143,364 (7,526) (67,734) (37,630) 2.500 Subtotal Direct Cost Total Direct Cost Overhead and Profit Cost (12.60%) $ 2,745,862 $ 2,745,862 $ 345,979 Contract Cost $ 3,091,841 Project Management (9.25%) $ 285,995 Additional Financial Warrant Re. tiered For Phase 1 Cummulafive Financial Warranty Required For Phase 1a-1 $ 3,37711836 $ 3p658,595 EXHIBIT M Other Permits and Licenses Ogilvy River Farm, LLC 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 Ogilvy River Farm 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 J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DBMS 112 Permit Application EXHIBIT N Source of Legal Right to Enter Ogilvy River Farms, LLC is the owner of the affected land and the substance to be mined (See Exhibit O), and will be the permitted operator, so they have the legal right to enter and mine the site. Iniii Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application EXHIBIT O Owner of Record of Affected Land (Surface Area) and Owner of Substance to be Mined Ogilvy River Farm, LLC 1695 Colorado Parkway Eaton, CO 80615 Deeds are attached. JET Consulting, Inc. Ogilvy River Farm, U1,C Ogilvy River Farm Pit DRMS 112 Permit Application Arrv's <,(df elc.,, Kg? 48737 ': 12/27/2022 08:49 c -p&-' Tot a a es; 3 Rec Fee: '26,00 Doc Fee: $260.00 (,-.%\i a% Koppes - Clerk arV or;der, Weld County,:,CO ek‘\ A4',.. \:.' J-0-11/44 rk-fif 6?1 sea) e‘@) C.__:1/4•9`. S> ic?)- i ti,. \'t • eN(S' • State Documentary Fee- Y Date: December 19, 2022 $260.00 -' Weld and State of +cotoredo, the following real property in tree County of Weld and State of Colorado, to wit: See attached "Ex iibi A" <S>) Al t.itai Special Warranty Deed "'-, )y - - y @7' .% (Pursuant to C.R.R. 38-30-11 9 (bl) ,A*- Grantor(s), JOANNE I. I-IEC t NDORF, whose street addressri O BOX 154, KERSEY, CO 8064 y or Town of .,KERSEY, County of Weld and We- of Colorado , for the considerpft rkof ($2,600,000.00) "*Tway faiiiIII0131x Hundred Thousand -and 00110®*"' dollars,in h d r sell(s) A LO A D LIMITED •``` �� , hereby and ��nV�y�s '��IL.V'1i'' RIVER FARM, LLC, RA � M ‹?;;6‘51LIABILITY COMPANY, sestr address is 1695 COLO,Rcibb PARKWAY, Eaton, CO 8061 ;,'Ctcy or Town of Eaton, County o -f. `) 3rd s`) aljt 6‘scc\ ccic) Kir cSf . r 6 also known:by street and number as: 28659 C UNTY ROAD 53, GREELEY, C A cg > A with aft its appurtenances and warrant(s) tit #itle to the same against all pers656 claiming under me(us), subject fa:Statutory Ceptions. ._ ) .fik72• r grind this day of December 19t22. (SEE ATTACHED ""SIGNAJ1J E PAGE-) "It d' ` ei(O)' es,c6) - , I S-> , -.S --, \ i Cal , . ,... CS)\t/ e'_ss\S cii ci %.° .1(0)4\5\ 0,31 ®4://1 4 si4. CO) @, el (C9 Si NSIF)1/41 @,)<*l:P <92 (t- . _. •'• ‘it? 4 , —S (Ll� Is (16:1i When/ -ied return to: L� /��y1 sr, - r• „,aFarm 1090 I r @1> CIP 2 \\I ry r s€9 4% e•Aj led (6) f K'er r f -kite% S1 <kg 44.. Q‘., Qs (ve 4$; % - A ed;\) nr,VN ® CV V & <43-:/ -c-( -re2 * 4 s$ ice' ,- OGILVY RI's 0jM, Lie, A COLORADO LIMY o`LIABILIIY COMPANY �e 1695 CO Lt ADO PARKWAY, Eaton, CO 8061t;) \\P \asSvt ciosing/deeds/statu'r'tswd,statutory.htmi --&02 1'1611101110 111 eg'>° 44. —NC)\> ck-)\S. N1/4S <Ate C\ \ktei #'S‘`) 40' (Z -41k ACC f Jo NEC IN FACT'S. ii.61 Colorado S `sC County of Joy (dY { o v Yom- <,,� H as (c7)t.? n ate 3 .;Obi Warranty Deed witbSietory Exceptions -* ,4 756 12/27/2022 ! ' AM e,=: Page 2 of 3 SlGNANRE PAGE CRF, ATT`+EY The foregoing instru m Qt vin acknowledged before me or , u`rs tier of December % IN FACT FOR lE 'HECKENDORF A JOANNE ill IMRF Witness my lycid and official seal • My Cornrnisilon expires: Pg. '1 V. C * @te. 44)%S 0,w/47 <% <2? \-\\ssef> 6 ti ;.r F. firik)t A .Ir‘ > - A c,y). • r . exit (053'' ® eiJi- evi, 1 esc,,, Is - f \ @r -re C' N. teD> <?NiNti co‘si cgsf „(0 Jr -A teepne@ar s@te '9! \\Fon 1090 • ciosingldeedsista 'dry/ statutory.htrni cyv,:s tilt, i (CC -9%3 d es' Ai?‘5• c,,sib)S6) 9 ea@ keg -, - •24 JOY HECKENDORF AS A ! NEM' 44r ANO, (69 N BAUGHMAN HMAN , OTAj}R} �r COLORADO PUBLIC �,`_' esk:`.,,,>5170O!1 C.r�LORADO .�-a�'IOTAR1 ID 201 74032,..Or IVY OMMISSICit.; EXPIRES AURri, 2025 nY scses 4-7° ocer C 6,24> e,(65A CVP1 KV 'rr "Jt Ctii(d) RtCe sr 4S\ xiceit* 325200726 (1003041 56 disv6\3 c ,titc&:P\ 4 <ices (0) -9 -/** „Ayer‘4.4k3 Escrow No. 2520612. PARCEL 1: 'h 4481775z z ' 12/27/2022 08:49 AM P ` t of 3 h 1F� 5:0- igts,1/4s eik (,(tu(bft A .•� ``' tie._:,51 4I, ro iPvit &-t €44) 'ea /1 A 4 ,SCS) - (c)).' esy t er latgr, is ALL 11.1AT PART OF THE W 1/2 ` Ij4 AND NWI/4 SW 1/4 OF SECTION 9, TOWNSHIP B NORTH, 64 WEST OF THE eV/ % \br ne`I`i-i P.M., WELD COUNTY, C ,_ I ADD, LYING WEST OF T ' t+ SAY AS CONVEYED TO "` ' DEPARTMENT OF r .� HIGHWAYS BY DEED RIEED APRIL 6,195`x' IN BOO S'-* } ,,� 4`4 AT PAGE EXCEPT THAT`CJ�N AS CONVEYED IN �.• • DEED RECORDED FEBMARY 16 2018 AT RECEPTION 437` 3. �., re\ \ PARCEL 3: *`) `;t THE NORlIga QUARTER OF -new NCIT ` A T QUARTER (NE 1/4 NE 1149 OF SECTION EIGHT (OEM TC wNS IP FIVE (5) NORTH,, R NGESA TY-FOUR WEST 0_FSHE GTi1=I P.M. EXCEPT THAT PORTION AS CONVEYED TO THE STATE DEPAIOAENT OF HIGHWAYS D'Y DEE C RDED APRIL 19 1957 IN BOOK 1475 AT PAGE 414, WELD COUNTY, COLD OO; . ti `.` t ' • .4'`.: PARCEL 3: 1::*\11 cis` i THAT PART OF THE SO . . ` - NORTH RANGE SI '' UR (64) WEST OF THE 6TH'F', ., WELD COUNTY, OOLORAR LYING SOUTH OF DIE RIGHT O }+a ra4:1kS - 0.) / {< stV eggs; <?>-1/44) 47; ‘‘ EAST 114 OF THE SOOTHE ► 3114 (SEW SE 114) OF SECTI (5), (6) 3311, se 1%) E TOWNSHIP FIVE WAY OF THE OGL' -ANAL; EXCEPT RIGHT OF FOR ROADWAY 40 FEET IN; ALONG THE SOUTH LINE"" OGILVY DITCH, BEING OFF THE NORTH SIDE OP` ABOVE DESCRIBED L a$� • _t 4 S ' i AND: )`• (;),9 Ni? @'3 4 ALL. THAT PART OF THE SOUTHWEST QUARTER OF THE SOUTHEAST QUARTER (SW 1/4 SE 114) . SOUTH HALF _ <,OF E SOUTHWEST QUARTER , 112 SW 1/4) OF SECTION �NSHlP FIVE (5) NORT t ' :RANGE S1XTY•FOUR (A(e4) WEST OF THE 6TH P. S COUNTY, COLORADO, L I `` D BEING SOUTH OF' T__ OF WAY OF THE ce, •y ` OGILVY CANAL AND EA "'' O` FOLLOWING DESCRIES UNE: SAID UNE BEGINNINi� 4 'tiE NORTHWEST CORNER see> ., (NW COR) OF 'THE SO titHitiiftEST QUARTER OF TIME SOL!THEAST QUARTER (SW 1/4 SE yt$c.SECTION 5, TOWNSHIP 6 \‘,,,. NORTH, RANGE 64 WEST OF THE 6Th P. Ks .RUNN.ItIOIENCE SOUTH T0• 451 EAST ; THENCE SOUTH 3• 'try EAST 112 FEET; T,HENCE SOUTH 43'' 53' EAST 51 ; THENCE SOUTH 6' 02' EAST'410 FEET; THENCE SOUTH 27,:(0i ` ' WEST 730 FEET TO A POINT ON THE NORTH BANK OF THE SOUTH PLATTE RIVER et ; r 4I NIti TOGETIl IIIMI THE FOLLOWING IRRIOTION AND D - R 12395 AND 151196,AV @rr Ofj Qiiir; (ar m.,<Nyte) c -AM "r' isk> "y y' __ ) <\31N‘fry cAr • ©I 1-711 1 wit @," del<a @IN) sPIC • �v cie te6)6 Apo tv, r CCP\ ‹Sker: ,,SCC're • i1/4c-or (O@m ccs 4 <4,),14>/- Qi) 44 - t. • csj rcl a.c5 (iy 5 ' - 6E;Yv EXHIBIT P Municipalities within Two Miles Town of Kersey Development Review P.C. Box 657 Kersey, Colorado 80644 UT Consulting, Inca 1 Ogilvy 'fiver Farm, LW Ogilvy River Farm Pit DRMS 112 Permit Application EXHIBIT Q Proof of Mailing Notices to County Commissioners and Soil Conservation District See attached J&T Consulting, Inc. Ogilvy River Farm, LLB: Ogilvy River Farm Pit DRMS 112 Permit application EXHIBIT R Proof of Filing with County Clerk or Recorder See attached. J&T Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application 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. Improved Roads 6. Irrigation Channels/Ditches/Pipelines 7. Water Pipelines Ogilvy River Farm, LLC believes that the mining operation, as proposed, will not adversely affect the permanent, man-made structures located within 200 feet of the east, north, and southeast side of the permit boundary. The structures, fences, and drainage ditches on the south side of the site, located within the mining limits will require removal. 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 is an abandoned PDC Energy, Inc. oil/gas well and an oil/gas line located within the mining limits and within the permit boundary. Ogilvy River Farm, LLC is pursuing agreements with PDC Energy, Inc. to develop a surface use agreement as required to address removal of the oil/gas well and the oil/gas line. PDC Energy, Inc. is the only oil/gas lessee that will be affected by the mining. The list of structure owners and structures are as follows (please refer to the mining plan maps for the specific locations): Lower Latham Reservoir Company Fence Northern Weld County Water District Water Line Ogilvy irrigating & Land Co. Sheds, House, and Irrigation Ditch PDC Energy Oil/Gas Well Oil/Gas Line tr.J&T Consulting, Inc. Ogilvy River Farm, UC Ogilvy River Farm Pit DRMS 112 Permit Application Roberta Smith House, Outbuilding, and Fence Xcel Energy Power Lines/Poles J iT Consulting, Inc. Ogilvy River Farm, LLC Ogilvy River Farm Pit DRMS 112 Permit Application SLOPE STABILITY REPORT FOR THE OGILVY RIVER FARM PIT WELD COUNTY, COLORADO FEBRUARY 2024 PREPARED FOR: OGILVY RIVER FARM, LLC. 801 8TH STREET, SUITE 220J GREELEY, CO 80631 (970) 353-9195 PREPARED BY: J&T Consulting, Inc. 305 DENVER AVENUE - SUITE D FORT LUPTON, CO 80621 PHONE: (303) 857-6222 CERTIFICATION: 1 hereby certify this slope stability analysis for Ogilvy River Farm, LLC., the Ogilvy River Farm 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 J&T Consulting, Inc. Ogilvy River Farm, LLC. -- Ogilvy River Farm Pit Slope Stability Analysis Page i Table of Contents Introduction Overview Geotechnical ical Data Design Analysis and Criteria Methodology Slone Stability Results Conclusions and Recommendations Appendices Appendix A Appendix B Appendix C Appendix D Appendix E Slope Stability Case Location Map Slope Stability Case Cross -Sections Slope Stability Case Galena Output Boring and Monitoring Well Logs USGS Map, Oct. 2002 revision — "Peak Acceleration (%g) with a 2% Probability of Exceedance in 50 yrs" J&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Page ii INTRODUCTION Ogilvy River Farm, LLC., proposes to mine the property located in the south 1/2 of the southeast 1/4 of Section 5, and the northeast 1/4 of the northeast 1/4 of Section 8, Township 5 North, Range 64 West of the 6t" Principal Meridian, in Weld County, Colorado. The property is bounded by private property on the south, west, and north sides, and Weld County Road 53 on the east site. The South Platte River runs through the southern portion of the property. 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 (DBMS) require that any mining within a 200 -foot setback of a man-made structure show thorough engineering analysis that the proposed mining 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 mining slopes and their estimated effect 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 property will be mined in a single pit, and reclaimed as a water storage reservoir. The mining will occur at 2H:1 V slopes. The reservoir will be reclaimed by backfilling the mining slopes with overburden/clay soils at 4.5H:1 V slopes, and will cover an estimated 37.63 surface acres when full. The actual surface area will depend on the final configuration of the reservoir after reclamation is complete. GEOTECHNICAL DATA Exploratory borings and monitoring wells were done on the site by Cesare, Inc. / CMT Technical Services. Logs of the borings and monitoring wells used to estimate the soil types and thicknesses for this study are included in Appendix D. J&T Consulting, Inc. (JT) estimated soil strength parameters based on the information from the boring and monitor well logs and other stability analyses that have been performed on gravel mining operations along the Front Range. Table 1, on the following page, represents a summary of the soil strength parameters that were used in this stability analysis. ur J&T Consulting, Inc. Ogilvy River Farm, LLC. Ogilvy River Farm Pit Slope Stability Analysis Page Table 7 - Soil Pro 3erties Max density •cf dry I Internal Description Saturated Density •cf Cohesion (psf) Friction Angle Clay 100 115 50 25 Sand and Grave l 130 10 M 35 115 Weathered Claystone Bedrock 110 120 1000 0 Stable Claystone Bedrock 120 135 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, six cases were identified as critical during the mining operation. Static and pseudo -static conditions were analyzed in 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. The USGS peak acceleration map is included in Appendix E. A peak acceleration factor of 0.09 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 x0.09=0.063. All mining side slopes will be 2H:1 V, and all reclaimed slopes will be 4.5H:1 V. The locations of the cases are shown on the case location map included in Appendix A. Case SS -1 — Irrigation Ditch and Gravel Road West of Pit. The mining operation is adjacent to an irrigation ditch and gravel road on the west side of the pit. The proposed setback for mining is 93 feet from the gravel road. The mining depth was assumed to be 79 feet in this area based on bore log information. Case SS -2 — Power Pole, Gravel Road, and Irrigation Ditch North of Pit. The mining operation is adjacent to a power pole, road, and irrigation ditch on the north side of the pit. The proposed setback for mining is 59 feet from the power pole and gravel road. The mining depth was assumed to be 77 feet in this area based on bore log information. J&7 Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Page 2 Case SS -3 Gravel Road, Fence, and Buildings South of Pit. The mining operation is adjacent to a gravel road, fence, and buildings on the south side of the pit. The proposed setback for mining is 39 feet from the gravel road. The mining depth was assumed to be 74 feet in this area based on bore log information. Case SS -4 — Gravel Road and Fence West of Pit. The mining operation is adjacent to a gravel road and fence on the west side of the pit. The proposed setback for mining is 36 feet from the gravel road. The mining depth was assumed to be 66 feet in this area based on bore log information. Case SS -5 - Fence, Power Pole, Road, and Buildings East of Pit The mining operation is adjacent to a fence, power pole, road, and buildings on the east side of the pit. The proposed setback for mining is 63 feet from the road. The mining depth was assumed to be 56 feet in this area based on bore log information. Case SS -6 — Telephone, Fiber Optic, Gas Line, and Buildings South of Pit The mining operation is adjacent to a telephone line, fiber optic line, gas line, and buildings on the south side of the pit. The proposed setback for mining is 62 feet from the gas line. The mining depth was assumed to be 51 feet in this area based on bore log information. The cross -sections located in Appendix B show the estimated phreatic reatic surface associated with each case, the geometry used in the mining/reclamation, and the locations of the man-made structures adjacent to the mining slopes. METHODOLOGY The mining embankment configuration shown in the computer analysis represents the estimated conditions for this site. If mining 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 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 with the steeper mining slopes. Case SS -2, which is the deepest location that is adjacent to a critical structure (80 feet depth of reclamation slope), was analyzed to determine the minimum factor of safety for all reclaimed slopes. InJ&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Page 3 SLOPE STABILITY RESULTS When estimated soil strength parameters are used, 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. The calculated factors of safety are within the design criteria specified for this project and can be considered indicators of the mining slope performance under the various conditions. The results of the static condition and pseudo -static condition slope stability analyses are shown in Tables 2, 3, & 4 below. Table 2: Mininc Conditions Static Condition Slope Stability Analysis Results Description Calculated of Factor Safety Required Minimum Factor Safety of Case SS -- Irrigation Ditch & Gravel Road 1.85 1.50 -1 West of Pit — Static Case SS — Power Pole, Gravel Road, and Irrigation Ditch 1.74 t 1.5O -2 North of Pit — Static 1.76 1.50 Case SS -3 — Gravel Road, Fences & Buildings South of Pit — Static 1.77 1.50 Case SS -4 — Gravel Road & Fence West of Pit — Static 1.95 1.50 Case SS — Fence, Power Pole, Road, and Buildings -5 East of Pit — Static Case SS -6 — Telephone, Fiber Optic, Gas Line, and 2,21 1.50 Buildings South of Pit — Static LI Jai' Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Page 4 Table 3: Minin Conditions Pseudo -Static Condition Sbo 3e Stability Analysis Results Description Calculated of Factor Safety Required Minimum Factor Safety of 1.30 Case SS -- Irrigation Ditch & Gravel Road 1.53 -1 West of Pit — Pseudo -Static 1.30 Case SS -2 — Power Pole, Gravel Road, Irrigation Ditch 1.47 North of Pit — Pseudo -Static and 1.30 Case SS Gravel Road, Fence, & Buildings 1.49 -3 — South of Pit — Pseudo -Static • 1.30 Case SS -4 - Gravel Road & Fence 1.50 West of Pit — Pseudo -Static Case SS — Fence, Power Pole, Road, Buildings 1.62 1.30 -5 East of Pit — Pseudo -Static and Case SS — Telephone, Fiber Optic, Gas Line, 1.81 1.30 -6 B Buildings South of Pit — Pseudo and -Static Table 4: Reclaimed Conditions Static & Pseudo -Static Condition Slope Stability Analysis Results Description Calculated of Factor Safety__ Required Minimum Factor of Case SS -- Power Pole, Gravel Road, Irrigation Ditch 1.63 1.50 -2 North of Pit — Static and Case SS -2 — Power Pole, Gravel Road, Irrigation Ditch 1.52 1.30 and I North of Pit — Pseudo -Static The Galena analysis output files are included in Appendix C for all cases. sZJ&T Consulting, Inc. Ogilvy River Farm, LLC. -- Ogilvy River Farm Pit Slope Stability Analysis Page 5 CONCLUSIONS AND RECOMMENDATIONS Mining Conditions: Case SS -1 - At a setback of 93 feet, the lowest resulting static condition safety factor of 1.85 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The lowest resulting pseudo -static condition safety factor of 1.53 exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical structure subject to earthquake loading. The proposed setback of 93 feet from the gravel road is satisfactory. Case SS -2 - At a setback of 59 feet, the lowest resulting static condition safety factor of 1.74 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The lowest resulting pseudo -static condition safety factor of 1.47 exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical structure subject to earthquake loading. The proposed setback of 59 feet from the power pole and gravel road is satisfactory. Case SS -3 - At a setback of 39 feet, the lowest resulting static condition safety factor of 1.76 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The lowest resulting pseudo -static condition safety factor of 1.49 exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical structure subject to earthquake loading. The proposed setback of 39 feet from the gravel road is satisfactory. Case SS -4 - At a setback of 36 feet, the lowest resulting static condition safety factor of 1.77 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The lowest resulting pseudo -static condition safety factor of 1.50 exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical structure subject to earthquake loading. The proposed setback of 36 feet from the gravel road is satisfactory. Case SS -5 - At a setback of 63 feet, the lowest resulting static condition safety factor of 1.95 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The lowest resulting pseudo -static condition safety factor of 1.62 exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical structure subject to earthquake loading. The proposed setback of 63 feet from the road is satisfactory. Case SS -6 - At a setback of 62 feet, the lowest resulting static condition safety factor of 2.21 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The lowest resulting pseudo -static condition safety factor of 1.81 exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical structure subject to earthquake loading. The proposed setback of 62 feet from the gas line is satisfactory. J&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Page 6 CONCLUSIONS AND RECOMMENDATIONS (Continued) Reclaimed Conditions: Case SS -2 - At a setback of 59 feet, the lowest resulting static condition safety factor of 1.63 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The lowest resulting pseudo -static condition safety factor of 1.52 exceeds the MLRB minimum requirement of 1.30 for an embankment adjacent to a critical structure subject to earthquake loading. The proposed setback of 45 feet from the power pole and gravel road is satisfactory. IiH ,]&T Consulting, Inc. 1 Ogilvy River Farm, LLC. — Ogilvy River Farm 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. 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. J&T Consulting, Inc. Ogilvy River Fern, LLC. -- Ogilvy River Farm Pit Slope Stability Analysis Page 8 APPENDIX A JET Consulting, Inc. Ogilvy River Farm, LLC. - Ogilvy River Farm Pit Slope Stability Analysis 2 to N 0 N CV N a f0 O ea 0 0 J U i co E_ 0 crl cu Q1 cri .l.A C a) a) L Cn T. 13 0 a } ca (V m m a 125 CV N J 4 L I kit 11.ti. �S. r tiease at i ti r r. III 1 \ ' • 4 r Ne t —"WI. seism 1 ••'PPFFf11F�„ y cr.! S ` 7 r � _ G ~s fi``'t • lerempate :Sala aleapila a tear •a ti 4 a a. t a ! a a 4 +La • 4 — a ti - - 41/40 rte" ti ; f al*Ifs v Tue.. Mmm • - a-- aila amaa7 '7 a air. 4S 4 r— ---a \ tia, _' 4r'.4.ti 14 0 :! Ris a- s 4 4 4..�.�..�: r _ .. I' S I — r — H i .r ti N et Sail' k yS% 4.A. • a A. ti ▪ %%titi A. — --aar a l r �'4 �4 ISlik. era % a- a - - i Njip -� a ►aria l4. iabl% • 1 1 � 1•111.-v I 44.4. •• r' b! at; I X J r�" / .,. I i ti • i 1I G soy - y ry PlA rre 140? 1 4 C t %\t '. 'A~ iii .•• i9` %y.% .t1.itioa. ti % is r a a 7 4 N• 4-� tit sa 4. f ire 1 '.. d4 1 ., r yso A -.+. mss/aseb 1 14`%1 4 a- a a Al al all .r Cr) U) CC I a r-. rstir. 2 I 3. I' Jiff WCR 60 tiA -4 /r\ bv, clot % r Ntt r at it LEGENDS mos- E GST1NC CONTOURS F1i1t3Fary uibt 1t t) tit 001414 tCCAINC* PaT4t aIC ' a LOc4 AN 5 tOtAtiow Ogilvy River Farm Pit Slope Stability Case Location Map Ogilvy River Farm, LLC J r 4 J itraaah r -n'— ti L'r-t r5 A a ar 4 _ `rre C7 ;Shci' APPEN IX B LIIJ&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Mining Conditions J&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Material keys 2: Sand and Gravel (c:10 0:359'115) Sat 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 -a C m L U O 9t _ 93 tt S C c 104 'ea . . 4 . • 4 •. ( . 1 1• - e • . • . tea is Mime. 0 GALENA Version 7 2 100 200 300 400 500 600 700 Licensed to: J & T Consulting 3: Weathered Claystone Bedrock (c:1000 0:0 g:110) Satfl 4: Stable Claystone Bedrock (c:3000 0:0 g:120) Satf� Sat ID Sat 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 1.85 Protect Ogilvy River Farm Slope Stability - Case SS -1 Mining Slope - Static File: P:\22032 Todd Bean Gravel PropertylSlope Stability\Galena120241O R F. Pit-SS1-Mining.gmf Edited: 26 Feb 2024 Processed: 26 Feb 2024 J&T Consulting, Inc. Material Keys 2- Sand and Gravel i:c.:10 o:35 8:115) 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 Oita relagearteAll#17 .. . a a a •w.--w-a--i-of--I- s •-t- 0 GALENA Version 7 2 x r s C.) C 0 .. . . '. •- ."gi-. z 3 i ttt c ha 0 100 200 as 300 400 500 0,003 600 700 Licensed to: J & T Consulting 3: Weathered C.tays1orte (c10006:0 g-110) Sat 4: Stable Claystone Bedrock (c:3000 0:0 g:120) - — _ Sat0 saie 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular SatU Satfl Results Critical Factor of Safety: 1.53 Project Ogilvy River Farm Slope Stability - Case SS -1 Mining Slope - Pseudo Static File: P:122032 Todd Bean Gravel Property\Slope StabilitylGalena120241Q_R.F, Pit-SSI-EQ-Mining gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 J&T Consulting, Inc. 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 i 0 GALENA Version 7 2 100 200 300 400 500 600 700 Licensed to: J & T Consulting Material keys 2: Sand and Gravel (c:10 0 35 ; 115; 3: Weathered Claystone Bedrock (c:1000 0:0 g:110) :V.4,2V: 4 t / y 2 e<yy V \ .V [N� ,'(' 1. k'. .<(‘; Sat O Sat f7 4: Stable Claystone Bedrock (c:3000 0:0 g:120) Sato 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat f) Sato Results Critical Factor of Safety: 1.74 Project Ogilvy River Farm Pit Slope Stability - Case SS -2 Mining Slope - Static File: P:122032 Todd Bean Gravel Property\Slope Stability\Galena120241O R F Pit-SS2-Mining.gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 J&T Consulting, Inc. Material keys 2: Sand and Gravel (c:10 0:35 g:115) SatO 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 n a 71) 0 59 ft L T. -T'1 't •*- P : 1* -*-E- - t.-* .•. r a .- • -. 2 CA 414 tC es a a a a aces e 0 GALENA Version 7 2 100 200 300 400 500 600 700 Licensed to: J & T Consulting 3: Weathered Clayston Bedroci (c:10006:09:110) Sat D. 4: Stable Claystone Bedrock (c:3000 a:0 g.120) Satfl 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 s:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sato Sat ID Results Critical Factor of Safety: 1.47 Project Ogilvy River Farm Pit Slope Stability - Case SS -2 Mining Slope - Pseudo Static File: P:122032 Todd Bean Gravel Property\Slope StabilitylGalena12024\O R F Pit-SS2-EQ-Mining.gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 JET Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 4300 100 200 300 400 0 GALENA Version 7 2 500 600 700 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) 3: Weathered Claystone BscTh ch (G1 :0 g.:110) SalD 4: Stable Claystone Bedrock (c:3000 0:0 g:1 Sate Sat ID 5: Slurry Wall (c:0 0:45 8:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat -D Satb Results Critical Factor of Safety: 1.76 Project Ogilvy River Farm Slope Stability - Case SS -3 Mining Slope - Static File: P:122032 Todd Bean Gravel Property\Slope StabiiitylGalena120241O R F_ Pit-SS3-Mining gmf Edited: 28 Feb 2024 Processed: 28 Feb 2024 J&T Consulting, Inc. 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 1 0 100 200 300 400 500 GALENA Version 7.2 600 700 Licensed to: J & T Consulting Material Keys 2 _ Sand and Gravel (c:10 0.35 9,115) 3: Weathered Claystone stone Bedrock (c: 1000 a:0 g:11 Sat 4: Stable Claystone Bedrock (c:3000 a:0 g:120) Satfl 5: Slurry Wall (c:d 8:45 8:100) 6: Clay (c:50 z:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat fl Sat fl Sat ID Results Critical Factor of Safety: 1.49 Pr oject Ogilvy River Farm Slope Stability - Case SS -3 Mining Slope - Pseudo Static File: P:\22032 Todd Bean Gravel PropertylSlope StabilitylGalena120241Q.R.F_ Pit-SS3-EQ-Mining.gmf Edited: 28 Feb 2024 Processed: 28 Feb 2024 J&T Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 E 21 1 C t1 :T: y . r 100 200 300 400 0 GALENA Version 7.2 d ♦ • 1 1 - — s 500 600 700 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) 3: Weathered Claystone Bedrock (c:1000 a:0 g:110) nip. . "W14Jy lv"rri M."n'11 Sat O Sat fl 4: Stable Claystone Bedrock (c:3000 0:0 g:11O Sat iD 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat'D Sat £) Results Critical Factor of Safety: 1.77 Project Ogilvy River Farm Slope Stability - Case SS -4 Mining Slope - Static j File: P:122032 Todd Bean Gravel Property1Slope StabilitylGalena120241O.R.F Pit-SS4-Mining.gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 g J&T Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 i 0.063 ask is 0 GALENA Version 7 2 100 200 300 400 500 600 a 700 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) 3: Weathered Claystone Bedrock (c:1000 0:0 8:110) J/Ii Cf�Cl�'.w4 <K. :.> M•I' .10,•h•w.. � w4i PJ O. Sato SatO 4: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D Sat fl Sato 1 _ 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 1.50 Project Ogilvy River Farm Slope Stability - Case SS -4 Mining Slope - Pseudo Static File: P:122032 Todd Bean Gravel Property\Slope StabilitylGalena120241Q R F Pit-SS4-EQ-Mining.gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 J&T Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 6311 0 GALENA Version 7 2 100 200 300 400 500 600 i 700 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) 3: Weathered Claystone Bedrock (c:1000 0:0 8:110) Sat o _• < Satfl �r 4: Stable Claystone Bedrock (c:3000 0:0 g:120) 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (e:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat O Sat Sat Results Critical Factor of Safety: 1.95 Protect Ogilvy River Farm Slope Stability - Case SS -5 Mining Slope - Static File: P:\22032 Todd Bean Gravel Property\Slope StabilitylGalena120241O. R F Pit-SS5-Mining.gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 iaa J&T Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 t—� a . • 'r -al 4---} - s • r . • s - i� 63 it r t1) U 3 ♦--*:i-3s-ht t �I a C c 0.033 0 GALENA Version 7,2 100 200 300 400 500 600 700 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) 3: Weathered Claystone Bedrock (c:1000 0:0 g:110) $,,.V,>n.cv'uo;<.('J'N! )< .,..arv,nrso...*p J.kS tet•4 OMOVVVP," <t.' < Sat D 4 het, xa MNY.uYu - , _ _ >. .... , . .. 4: Stable Claystone Bedrock (c:3000 0:0 g:120) SatD 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular SatO SatO Sat O Results Critical Factor of Safety: 1.62 Protect Ogilvy River Farm Slope Stability - Case SS -5 Mining Slope - Pseudo Static File: P:122032 Todd Bean Gravel Property\Slope StabilitylGalena120241O.R.F. Pit-SS5-EO-Mining,gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 J&T Consulting, Inc. Material Keys 2: Sand and Gravel (c:10 0:35 g:115) 4750 4700 4650 4600 4550 4500 4450 4400 4350 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7 2 m C_ J 0 a E J C) C C II Licensed to: J & T Consulting SatU 3: Weathered Claystone Bedrock (c:1000 0:0 9:110) Sat B 4: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular SatO Sat D Results Critical Factor of Safety: 2.21 Project Ogilvy River Farm Slope Stability - Case SS -6 Mining Slope - Static File: P:122032 Todd Bean Gravel Property\Slope StabilitylGalena120241O R.F, Pit-SSE-Mining.gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 J&T Consulting, Inc. Material Keys 4750 4700 4650 4600 4550 4500 4450 4400 4350 zr -•- — — tea — i -tea i — — "'emir • r as -b i f'!'3'ispde" .11 "AI -1A6=—'i'•! icra1F•16 LrY-.1iM '$ f'a•*'a°3 GALENA Version 7 2 To CO E J O) C_ C_ 0 50 100 150 200 250 300 350 400 450 500 550 600 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) 3: Weathered Claystone Bedrock (c:1000 0:0 g:110) <e.N.,; SatO SatD 4: Stable Claystone Bedrock (c:3000 0:0 a120) 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat Sat D Sat D Results Critical Factor of Safety: 1.81 Project Ogilvy River Farm Slope Stability - Case SS -6 Mining Slope - Pseudo Static File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena120241O.R.F. Pit-SS6-EQ-Mining gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 Ihtdri J&T Consulting, Inca Reclamation Conditions J&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Material Keys 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 13 ca 0 59 it as a s •4• •- a s A a s as Ma -- a _- -• _..t_.... a • •'• • z • 1" • • s ••- • • • • • • • •-• • I • P P •L,-E=r- a -E -1 -I -• 'fat •s . a s - 0 GALENA Version 7 2 Y 100 200 300 400 500 600 700 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 e:35 g:115) 3: Weathered Claystone Bedrock (c:1000 0:0 g:110) Sat D 4: Stable Claystone Bedrock (c:3000 e:0 g:120) Sat O SatO 5: Slurry Wall (c:0 e:45 g:100) 6: Clay (c50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat W Sate Results Critical Factor of Safety: 1.63 Project Ogilvy River Farm Pit Slope Stability - Case SS -2 Reclamation Slope - Static File: P:122032 Todd Bean Gravel PropertylSlope StabilitylGalena120241Q.R.F. Pit-SS2-Reclamation.gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 JiT Consulting, Inc. Material Keys 4800 4750 4700 4650 4600 4550 4500 4450 4400 4350 n • I • 1 - * I s • 0 T • • Gravel Road 59 11 • •311.r•. T. •�.t.¢T•/ 4t.fbT.arl*.IP•*bi•7r♦ , . • • • • • * • Y • Y • } • • • • • • ♦• — GALENA Version 7.2 C_ C_ I • t • ♦ 4 it 100 200 300 400 500 600 0-4.-4•• 0.063 700 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) 3: Weathered Claystone Bedrock (c:1000 0:0 g:110) Sat fl .,. V ..i t Sat D 4: Stable Claystone Bedrock (c:3000 0:0 g:120) 5: Slurry Wall (c:0 0:45 g:100) 6: Clay (c:50 0:25 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat O Sato Sat ID Results Critical Factor of Safety: 1.52 Project Ogilvy River Farm Pit Slope Stability - Case SS -2 Reclamation Slope - Pseudo Static File: P:122032 Todd Bean Gravel Property\Slope StabilitylGalena120241O R.F. Pit-SS2-EQ-Reclamation gmf Edited: 27 Feb 2024 Processed: 27 Feb 2024 J&T Consulting, Inc. APPENDIX C J&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Mining Conditions JET Consulting, Inc. Ogilvy River Farn, LLC. — Ogilvy River Farm Pit Slope Stability Analysis GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS1-Mining.gmf Processed: 27 Feb 2024 09:07:17 DATA: Analysis 1 - Slope Stability - Case SS -1 Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4602.00 Profile: 2 (2 points) 0.00 4594.65 Profile: 3 (2 points) 289.00 4600.65 Profile: 4 (2 points) 292.00 4594.65 Profile: 5 (2 points) 0.00 4589.64 Profile: 6 (2 points) 292.00 4589.64 Profile: 7 (2 points) 0.00 4581.65 Profile: 8 (2 points) 292.00 4581.65 Profile: 9 (4 points) 0.00 4520.54 Profile: 10 (5 points) 292.00 4521.68 4530.00 Profile: 11 (9 points) 0.00 4518.54 4519.68 352.00 4519.04 Slope Surface (15 points) 4599.47 4599.28 4600.65 0.00 4590.29 200.00 4600.65 292.00 4530.00 700.00 4602.00 Material beneath: 2 - Sand and Gravel 289.00 4594.65 Material beneath: 5 - Slurry Wall 292.00 4600.65 Material beneath: 2 - Sand and Gravel 700.00 4594.65 Material beneath: 6 Clay 289.00 4589.64 Material beneath: 6 - Clay 700.00 4589.64 Material beneath: 2 - Sand and Gravel 289.00 4581.65 Material beneath: 2 - Sand and Gravel 700.00 4581.65 Material beneath: 3 - Weathered 151.32 4520.54 Material beneath: 3 - Weathered 352.00 4521.04 Material beneath: 151.32 Phreatic Surface (4 points) 0.00 4592.65 Failure Surface Claystone Bedrock 261.81 4521.97 Claystone Bedrock 464.16 4523.81 4 - Stable Claystone Bedrock 4518.54 261.81 464.16 4521.81 23.78 212.27 305.57 289.00 4599.47 4601.66 4600.85 4592.65 4519.97 641.71 4526.21 71.72 260.30 464.16 4600.62 4601.76 4523.81 292.00 4523.81 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 212.27 YL: 4601.66 XR: 464.16 YR: Centre: XC: 465.26 YC: 4973.81 Radius: R: Variable Restraints 289.00 4521.68 641.71 4528.21 289.00 4519.68 700.00 4528.00 148.28 270.60 641.71 4601.06 4601.86 4528.21 464.16 4523.81 4523.81 450.00 700.00 292.00 174.18 289.00 700.00 Parameter descriptor: Range of variation: Trial positions within range: - at -a -- -- - - - - XL 10.00 20 XR 10.00 20 R 400.00 50 RESULTS: Analysis 1 - Slope Stability - Case 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: 2.060 Analysis Summary There were: 15026 successful analyses from a total of 20001 trial failure surfaces 4975 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.86 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left 1 216.22 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 216.74 217.27 214.11 212.01 212.53 216.22 209.90 214.64 216.74 213.06 208.32 212.01 215.16 217.27 213.59 214.11 Y -Left 4601.67 4601.67 4601.67 4601.66 4601.61 4601.66 4601.67 4601.20 4601.67 4601.67 4601.66 4600.89 4601.61 4601.67 4601.67 4601.66 4601.66 X -Right 459.16 459.16 459.16 459.69 459.16 459.16 460.21 459.69 459.69 460.21 459.16 459.16 460.21 459.69 460.21 459.16 460.74 Y -Right 4526.24 4526.24 4526.24 4525.98 4526.24 4526.24 4525.73 4525.98 4525.98 4525.73 4526.24 4526.24 4525.73 4525.98 4525.73 4526.24 4525.47 X -Centre 404.30 404.74 405.18 405.60 403.52 403.99 407.66 404.43 406.04 408.10 404.43 402.57 406.82 406.48 408.54 404.87 408.93 Y -Centre 4778.51 4778.60 4778.70 4786.76 4786.69 4786.79 4786.82 4794.85 4786.85 4786.91 4786.88 4794.83 4794.98 4786.94 4786.99 4786.97 4795.03 Radius 258.16 258.16 258.16 266.33 266.33 266.33 266.33 274.49 266.33 266.33 266.33 274.49 274.49 266.33 266.33 266.33 274.49 FoS 1.858 1.866 1.872 1.876 1.877 1.877 1.878 1.880 1.883 1.884 1.884 1.885 1.886 1.889 1.890 1.890 1.893 <-- Critical 18 216.22 19 212.53 20 210.43 21 208.85 22 215.69 23 216.74 24 214.64 25 208.32 26 209.38 27 216.22 28 214.11 29 217.27 30 215.16 31 213.06 32 210.95 33 212.01 34 208.85 35 216.74 36 209.90 37 214.64 38 215.69 39 213.59 40 210.95 41 213.59 42 216.74 43 214.64 44 212.01 45 212.53 46 216.22 47 217.27 48 210.43 49 211.48 50 209.38 51 207.27 52 217.27 53 215.16 54 215.16 55 215.69 56 214.11 57 210.43 58 213.06 59 211.48 60 216.74 61 215.69 62 214.64 4601.67 4601.66 4601.30 4601.00 4601.67 4601.67 4601.67 4600.89 4601.10 4601.67 4601.66 4601.67 4601.67 4601.66 4601.40 4601.61 4601.00 4601.67 4601.20 4601.67 4601.67 4601.66 4601.40 4601.66 4601.67 4601.67 4601.61 4601.66 4601.67 4601.67 4601.30 4601.51 4601.10 4600.69 4601.67 4601.67 4601.67 4601.67 4601.66 4601.30 4601.66 4601.51 4601.67 4601.67 4601.67 461.27 460.21 459.69 459.16 459.69 461.27 460.74 460.21 459.16 459.69 459.16 461.27 460.74 460.21 459.69 461.27 460.21 459.69 459.16 459.16 460.74 459.69 460.74 460.21 462.32 461.79 459.69 461.27 460.74 459.69 460.74 459.69 460.21 459.69 462.32 459.16 461.79 460.21 460.21 459.16 461.27 460.21 460.74 461.79 460.21 4525.22 4525.73 4525.98 4526.24 4525.98 4525.22 4525.47 4525.73 4526.24 4525.98 4526.24 4525.22 4525.47 4525.73 4525.98 4525.22 4525.73 4525.98 4526.24 4526.24 4525.47 4525.98 4525.47 4525.73 4524.71 4524.96 4525.98 4525.22 4525.47 4525.98 4525.47 4525.98 4525.73 4525.98 4524.71 4526.24 4524.96 4525.73 4525.73 4526.24 4525.22 4525.73 4525.47 4524.96 4525.73 411.01 407.31 404.96 403.09 406.92 411.45 409.38 405.82 403.61 407.37 405.31 411.90 409.82 407.75 405.48 410.13 406.35 407.81 404.13 405.75 410.26 405.16 408.76 408.19 414.79 412.70 406.53 410.62 410.71 408.25 408.24 406.00 406.88 404.47 415.24 406.19 413.15 407.22 408.63 404.66 411.06 406.30 411.15 413.60 409.08 4795.07 4795.07 4794.96 4794.94 4787.03 4795.15 4795.11 4803.10 4795.05 4787.12 4787.06 4795.23 4795.20 4795.16 4795.07 4803.21 4803.20 4787.21 4795.16 4787.15 4795.28 4786.67 4803.31 4795.24 4803.33 4803.32 4795.28 4803.29 4795.36 4787.30 4803.21 4795.17 4803.30 4803.19 4803.41 4787.24 4803.40 4786.73 4795.33 4795.26 4803.38 4794.87 4795.45 4803.47 4795.41 274.49 1.893 274.49 1.893 274.49 1.894 274.49 1.895 266.33 1.895 274.49 1.898 274.49 1.898 282.65 1.898 274.49 1.899 266.33 1.901 266.33 1.902 274.49 1.903 274.49 1.903 274.49 1.904 274.49 1.904 282.65 1.905 282.65 1.906 266.33 1.907 274.49 1.907 266.33 1.908 274.49 1.908 266.33 1.909 282.65 1.909 274.49 1.909 282.65 1.910 282.65 1.910 274.49 1.910 282.65 1.911 274.49 1.912 266.33 1.912 282.65 1.912 274.49 1.912 282.65 1.913 282.65 1.913 282.65 1.914 266.33 1.914 282.65 1.914 266.33 1.915 274.49 1.915 274.49 1.915 282.65 1.915 274.49 1.916 274.49 1.917 282.65 1.918 274.49 1.919 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 209.90 213.59 215.69 211.48 213.59 207.80 207.27 217.27 212.53 212.53 216.22 214.11 208.32 208.85 215.16 214.11 210.95 212.01 210.43 216.22 216.74 213.06 215.16 209.90 213.06 207.80 214.64 215.69 217.27 210.95 215.69 211.48 213.59 208.85 212.53 216.74 210.95 4601.20 4601.66 4601.67 4601.51 4601.66 4600.79 4600.69 4601.67 4601.66 4601.66 4601.67 4601.66 4600.89 4601.00 4601.67 4601.66 4601.40 4601.61 4601.30 4601.67 4601.67 4601.66 4601.67 4601.20 4601.66 4600.79 4601.67 4601.67 4601.67 4601.40 4601.67 4601.51 4601.66 4601.00 4601.66 4601.67 4601.40 Critical Failure Surface (circle 1) 460.74 461.27 459.16 460.74 460.74 459.69 460.74 460.74 459.69 462.32 461.79 461.79 459.69 461.27 460.21 461.27 461.79 460.74 461.79 459.16 461.79 462.32 462.84 460.21 459.69 460.74 461.27 460.21 461.79 459.16 462.84 461.79 462.32 459.69 460.74 459.16 460.21 Intersects: XL: 216.22 YL: Centre: XC: 404.30 YC: Generated failure surface: (20 points) 216.22 4601.67 226.08 4565.33 4525.47 4525.22 4526.24 4525.47 4525.47 4525.98 4525.47 4525.47 4525.98 4524.71 4524.96 4524.96 4525.98 4525.22 4525.73 4525.22 4524.96 4525.47 4524.96 4526.24 4524.96 4524.71 4524.45 4525.73 4525.98 4525.47 4525.22 4525.73 4524.96 4526.24 4524.45 4524.96 4524.71 4525.98 4525.47 4526.24 4525.73 4601.67 4778.51 4591.73 XR: 407.71 411.51 406.63 409.29 408.49 404.99 407.70 411.60 407.01 413.92 414.05 412.25 405.52 409.60 409.52 411.95 412.05 409.82 411.51 407.07 414.49 414.37 416.47 407.40 407.45 408.23 412.40 409.97 414.94 405.18 416.93 412.58 414.82 406.04 410.31 407.51 408.46 4803.11 4803.46 4787.33 4803.40 4794.94 4803.29 4811.41 4795.53 4795.37 4811.47 4803.55 4803.24 4803.40 4811.41 4795.50 4803.53 4811.49 4803.50 4811.40 4787.42 4803.63 4811.54 4811.54 4803.40 4795.46 4811.51 4803.61 4795.58 4803.70 4795.37 4811.62 4811.58 4811.62 4803.50 4803.59 4787.51 4803.60 459.16 YR: Radius: R: 236.46 4582.35 282.65 282.65 266.33 282.65 274.49 282.65 290.82 274.49 274.49 290.82 282.65 282.65 282.65 290.82 274.49 282.65 290.82 282.65 290.82 266.33 282.65 290.82 290.82 282.65 274.49 290.82 282.65 274.49 282.65 274.49 290.82 290.82 290.82 282.65 282.65 266.33 282.65 4526.24 258.16 1.920 1.920 1.920 1.920 1.921 1.921 1.921 1.921 1.921 1.922 1.922 1.923 1.923 1.924 1.924 1.924 1.924 1.925 1.925 1.925 1.926 1.926 1.926 1.926 1.927 1.927 1.928 1.928 1.929 1.929 1.929 1.929 1.930 1.930 1.930 1.930 1.931 247.34 4573.54 258.68 270.45 4534.12 334.47 4520.76 403.58 4526.24 4557.75 4529.97 4520.34 282.61 348.04 417.58 4550.82 4526.55 4520.69 295.13 361.78 431.53 4544.56 4523.87 4521.78 Slice Geometry and Properties - Critical Failure Surface (circle 1, 46 slices) Slice Test Factor 1 1.13 2 1.03 3 1.01 4 1.10 5 0.99 6 0.99 7 0.97 8 0.97 9 0.96 10 0.96 11 0.96 12 0.95 13 0.95 14 0.94 15 0.88 16 0.88 X -Left 216.22 223.18 225.17 228.40 236.46 241.90 247.34 253.01 258.68 260.30 265.38 270.45 276.53 282.61 289.00 291.01 X -S Area 24.50 15.95 34.17 126.74 117.32 141.34 171.52 194.86 59.73 198.60 215.44 277.58 296.23 329.76 107.35 53.96 Angle 45.2 45.2 43.0 42.1 39.0 39.0 35.9 35.9 32.8 32.8 32.8 29.7 29.7 26.6 26.6 26.6 Width 6.97 1.99 3.23 8.07 5.44 5.44 5.67 5.67 1.62 5.08 5.08 6.08 6.08 6.39 2.01 0.99 Base Length Matl Cohesion 9.89 6 50.00 2.82 2 10.00 4.41 2 10.00 10.88 6 50.00 7.00 2 10.00 7.00 2 10.00 7.00 2 10.00 7.00 2 10.00 1.92 2 10.00 6.04 2 10.00 6.04 2 10.00 7.00 2 10.00 7.00 2 10.00 7.14 2 10.00 2.24 5 0.00 1.11 5 0.00 Phi 25.0 35.0 35.0 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 45.0 45.0 307.97 375.64 445.41 Weight 2449.98 1624.99 3664.37 14085.34 13283.95 16404.77 20242.63 23274.05 7178.34 23970.75 26153.01 33893.99 36390.40 40722.46 11186.26 5396.39 4538.99 4521.94 4523.64 PoreWater Force 0.00 0.00 427.36 4516.28 5460.64 7384.67 9242.01 11034.15 3340.71 11299.01 12530.62 15996.44 17510.49 19348.65 3150.15 0.00 321.10 389.59 459.16 Normal Stress 259.04 589.32 861.83 1479.91 2050.23 2554.05 3084.91 3559.85 3908.98 4162.90 4548.68 4989.98 5366.07 5792.42 4692.01 4276.43 17 292.00 173.34 26.6 3.13 3.50 2 10.00 35.0 19275.33 0.00 5174.34 0.94 18 295.13 299.04 23.5 5.22 5.69 2 10.00 35.0 33288.33 0.00 5479.99 0.94 19 300.35 311.27 23.5 5.22 5.69 2 10.00 35.0 34687.77 0.00 5710.48 0.94 20 305.57 146.03 23.5 2.40 2.62 2 10.00 35.0 16302,41 0.00 5827.34 0.94 21 307.97 312.85 20.4 5.18 5.52 2 10.00 35.0 35063.32 0.00 5936.84 0.94 22 313.15 309.77 20.4 5.18 5.52 2 10.00 35.0 34904.63 0.00 5910.00 0.94 23 318.33 164.03 20.4 2.76 2.95 2 10.00 35.0 18531.99 0.00 5880.62 0.94 24 321.10 441.80 17.2 7.55 7.90 2 10.00 35.0 49902.23 0.00 5916.52 0.94 25 328.65 333.77 17.3 5.82 6.09 2 10.00 35.0 37809.77 0.00 5814.81 0.94 26 334.47 298.79 14.1 5.31 5.48 2 10.00 35.0 34051.86 0.00 5850.60 0.94 27 339.78 292.18 14.1 5.31 5.48 2 10.00 35.0 33498.19 0.00 5755.46 0.94 28 345.09 159.08 14.1 2.95 3.04 2 10.00 35.0 18293.86 0.00 5671.56 0.94 29 348.04 361.83 11.0 6.87 7.00 2 10.00 35.0 41610.41 0.00 5641.58 0.95 30 354.91 348.10 11.0 6.87 7.00 2 10.00 35.0 40031.95 0.00 5427.40 0.95 31 361.78 336.02 7.9 6.93 7.00 2 10.00 35.0 38686.51 184.46 5303.09 0.96 32 368.71 319.37 7.9 6.93 7.00 2 10.00 35.0 36872.20 606.27 5057.42 0.96 33 375.64 128.17 4.8 2.89 2.90 2 10.00 35.0 14825.95 361.11 4968.75 0.97 34 378.54 235.46 4.8 5.53 5.55 3 1000.00 0.0 27255.56 812.58 4885.73 1.00 35 384.06 223.20 4.8 5.53 5.55 3 1000.00 0.0 25850.74 973.99 4631.55 1.00 36 389.59 263.58 1.7 7.00 7.00 3 1000.00 0.0 30544.28 1376.31 4350.00 1.00 37 396.59 241.27 1.7 7.00 7.00 3 1000.00 0.0 27974.05 1467.80 3982.55 1.00 38 403.58 217.66 -1.4 7.00 7.00 3 1000.00 0.0 25247.81 1476.34 3621.48 1.00 39 1.00 40 1.00 41 1.00 42 1.01 43 1.01 44 1.06 45 1.10 46 1.10 410.58 417.58 424.55 431.53 437.14 442.74 445.41 452 .28 192.69 165.96 138.47 90.50 71.03 26.90 47.88 15.96 X -S Area: 9031.05 - 1.4 -4.5 - 4.5 -7.6 - 7.6 -7.6 -10.7 -10.7 7.00 6.98 6.98 5.61 5.61 2.66 6.88 6.88 7.00 7.00 7.00 5.66 5.66 2.69 7.00 7.00 Path Length: 265.96 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 2 10.00 2 10.00 2 10.00 0.0 0.0 0.0 0.0 0.0 35.0 35.0 35.0 22357.73 19258.88 16067.10 10494.70 8226.91 3107.84 5506.55 1835.40 X -S Weight: 1041286.00 1401.92 1244.95 1005.04 583.21 318.83 58.82 0.00 0.00 3208.46 2802.56 2345.08 1943.77 1539.28 1229.17 863.30 288.49 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS1-EQ-Mining.gmf Processed: 27 Feb 2024 12:32:14 DATA: Analysis 1 - Slope Stability - Case SS -1 Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4602.00 Profile: 2 (2 points) 0.00 4594.65 Profile: 3 (2 points) 289.00 4600.65 Profile: 4 (2 points) 292.00 4594.65 Profile: 5 (2 points) 0.00 4589.64 Profile: 6 (2 points) 292.00 4589.64 Profile: 7 (2 points) 0.00 4581.65 Profile: 8 (2 points) 292.00 4581.65 Profile: 9 (4 points) 0.00 4520.54 Profile: 10 (5 points) 292.00 4521.68 4530.00 Profile: 11 (9 points) 0.00 4518.54 4519.68 352.00 4519.04 Slope Surface (15 points) 4599.47 4599.28 4600.65 0.00 4590.29 200.00 4600.65 292.00 4530.00 700.00 4602.00 Material beneath: 2 - Sand and Gravel 289.00 4594.65 Material beneath: 5 - Slurry Wall 292.00 4600.65 Material beneath: 2 - Sand and Gravel 700.00 4594.65 Material beneath: 6 - Clay 289.00 4589.64 Material beneath: 6 - Clay 700.00 4589.64 Material beneath: 2 - Sand and Gravel 289.00 4581.65 Material beneath: 2 - Sand and Gravel 700.00 4581.65 Material beneath: 3 - Weathered Claystone Bedrock 151.32 4520.54 261.81 4521.97 Material beneath: 3 - Weathered Claystone Bedrock 352.00 4521.04 464.16 4523.81 Material beneath: 4 - Stable Claystone Bedrock 151.32 4518.54 261.81 4519.97 Phreatic Surface (4 points) 0.00 4592.65 Failure Surface 464.16 4521.81 23.78 212.27 305.57 4599.47 4601.66 4600.85 289.00 4592.65 641.71 4526.21 71.72 260.30 464.16 4600.62 4601.76 4523.81 292.00 4523.81 Initial circular surface for critical search defined by: XL, XR, R Intersects: XL: 212.27 YL: 4601.66 XR: 464.16 YR: Centre: XC: 465.26 YC: 4973.81 Radius: R: Earthquake Force 289.00 4521.68 641.71 4528.21 289.00 4519.68 700.00 4528.00 148.28 270.60 641.71 4601.06 4601.86 4528.21 464.16 4523.81 4523.81. 450.00 700.00 292.00 174.18 289.00 700.00 Pseudo -static earthquake (seismic) coefficient: 0.063 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: - - - 7•!\ - - XL 10.00 20 -a -- XR 10.00 20 R 400.00 50 all a SI a RESULTS: Analysis 1 - Slope Stability -- Case 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: 1.695 Analysis Summary There were: 15026 successful analyses from a total of 20001 trial failure surfaces 4975 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.53 Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 X -Left 216.22 216.74 212.01 209.90 212.53 214.11 208.32 217.27 216.22 213.06 214.64 212.01 208.85 Y -Left 4601.67 4601.67 4601.61 4601.20 4601.66 4601.66 4600.89 4601.67 4601.67 4601.66 4601.67 4601.61 4601.00 X -Right 459.16 459.16 459.16 459.69 459.16 459.69 459.16 459.16 460.21 459.16 459.69 460.21 459.16 Y -Right 4526.24 4526.24 4526.24 4525.98 4526.24 4525.98 4526.24 4526.24 4525.73 4526.24 4525.98 4525.73 4526.24 X -Centre 404.30 404.74 403.52 404.43 403.99 405.60 402.57 405.18 407.66 404.43 406.04 406.82 403.09 Y -Centre 4778.51 4778.60 4786.69 4794.85 4786.79 4786.76 4794.83 4778.70 4786.82 4786.88 4786.85 4794.98 4794.94 Radius 258.16 258.16 266.33 274.49 266.33 266.33 274.49 258.16 266.33 266.33 266.33 274.49 274.49 a a FoS 1.530 1.538 1.541 1.542 1.543 1.544 1.544 1.544 1.548 1.550 1.550 1.550 1.552 <-- Critical 14 216.74 15 210.43 16 208.32 17 213.59 18 215.16 19 209.38 20 212.53 21 214.11 22 217.27 23 216.22 24 215.69 25 208.85 26 210.95 27 214.64 28 209.90 29 214.11 30 216.74 31 207.27 32 213.06 33 212.01 34 216.22 35 210.95 36 215.16 37 209.38 38 210.43 39 217.27 40 212.01 41 211.48 42 214.64 43 213.59 44 213.59 45 212.53 46 210.43 47 216.74 48 207.80 49 207.27 50 215.69 51 214.64 52 211.48 53 209.90 54 208.32 55 213.06 56 214.11 57 216.74 58 216.22 4601.67 4601.30 4600.89 4601.66 4601.67 4601.10 4601.66 4601.66 4601.67 4601.67 4601.67 4601.00 4601.40 4601.67 4601.20 4601.66 4601.67 4600.69 4601.66 4601.61 4601.67 4601.40 4601.67 4601.10 4601.30 4601.67 4601.61 4601.51 4601.67 4601.66 4601.66 4601.66 4601.30 4601.67 4600.79 4600.69 4601.67 4601.67 4601.51 4601.20 4600.89 4601.66 4601.66 4601.67 4601.67 460.21 459.69 460.21 459.16 459.69 459.16 460.21 460.74 460.21 461.27 459.69 460.21 459.69 460.74 459.16 459.16 461.27 459.69 460.21 461.27 459.69 460.74 460.74 460.21 460.74 461.27 459.69 459.69 459.16 460.21 459.69 461.27 459.16 459.69 459.69 460.74 460.74 461.79 460.21 460.74 459.69 461.27 460.21 462.32 460.74 4525.73 4525.98 4525.73 4526.24 4525.98 4526.24 4525.73 4525.47 4525.73 4525.22 4525.98 4525.73 4525.98 4525.47 4526.24 4526.24 4525.22 4525.98 4525.73 4525.22 4525.98 4525.47 4525.47 4525.73 4525.47 4525.22 4525.98 4525.98 4526.24 4525.73 4525.98 4525.22 4526.24 4525.98 4525.98 4525.47 4525.47 4524.96 4525.73 4525.47 4525.98 4525.22 4525.73 4524.71 4525.47 408.10 404.96 405.82 404.87 406.48 403.61 407.31 408.93 408.54 411.01 406.92 406.35 405.48 409.38 404.13 405.31 411.45 404.47 407.75 410.13 407.37 408.76 409.82 406.88 408.24 411.90 406.53 406.00 405.75 408.19 405.16 410.62 404.66 407.81 404.99 407.70 410.26 412.70 406.30 407.71 405.52 411.06 408.63 414.79 410.71 4786.91 4794.96 4803.10 4786.97 4786.94 4795.05 4795.07 4795.03 4786.99 4795.07 4787.03 4803.20 4795.07 4795.11 4795.16 4787.06 4795.15 4803.19 4795.16 4803.21 4787.12 4803.31 4795.20 4803.30 4803.21 4795.23 4795.28 4795.17 4787.15 4795.24 4786.67 4803.29 4795.26 4787.21 4803.29 4811.41 4795.28 4803.32 4794.87 4803.11 4803.40 4803.38 4795.33 4803.33 4795.36 266.33 1.553 274.49 1.554 282.65 1.555 266.33 1.555 266.33 1.556 274.49 1.557 274.49 1.557 274.49 1.558 266.33 1.559 274.49 1.561 266.33 1.562 282.65 1.562 274.49 1.563 274.49 1.563 274.49 1.565 266.33 1.565 274.49 1.566 282.65 1.566 274.49 1.566 282.65 1.567 266.33 1.567 282.65 1.568 274.49 1.568 282.65 1.569 282.65 1.570 274.49 1.570 274.49 1.570 274.49 1.571 266.33 1.571 274.49 1.571 266.33 1.572 282.65 1.572 274.49 1.572 266.33 1.573 282.65 1.573 290.82 1.573 274.49 1.573 282.65 1.574 274.49 1.575 282.65 1.575 282.65 1.576 282.65 1.576 274.49 1.576 282.65 1.577 274.49 1.577 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 215.16 208.85 217.27 211.48 215.16 215.69 207.80 212.53 217.27 209.90 213.59 214.64 210.95 213.59 216.74 207.27 210.43 212.53 215.69 215.69 208.85 212.01 208.32 210.95 214.11 209.38 214.11 213.06 213.06 215.16 217.27 216.22 210.95 209.38 211.48 207.80 210.43 208.32 216.22 212.53 215.16 4601.67 4601.00 4601.67 4601.51 4601.67 4601.67 4600.79 4601.66 4601.67 4601.20 4601.66 4601.67 4601.40 4601.66 4601.67 4600.69 4601.30 4601.66 4601.67 4601.67 4601.00 4601.61 4600.89 4601.40 4601.66 4601.10 4601.66 4601.66 4601.66 4601.67 4601.67 4601.67 4601.40 4601.10 4601.51 4600.79 4601.30 4600.89 4601.67 4601.66 4601.67 Critical Failure Surface (circle 1) Intersects: XL: 216.22 459.16 461.27 459.69 460.74 461.79 460.21 460.74 459.69 462.32 460.21 461.27 460.21 461.79 460.74 460.74 461.79 461.79 462.32 461.79 459.16 459.69 460.74 460.74 459.16 461.79 461.27 461.27 459.69 462.32 460.21 460.74 461.79 460.21 462.32 461.79 461.79 460.21 461.27 459.16 460.74 462.84 YL: 4526.24 4525.22 4525.98 4525.47 4524.96 4525.73 4525.47 4525.98 4524.71 4525.73 4525.22 4525.73 4524.96 4525.47 4525.47 4524.96 4524.96 4524.71 4524.96 4526.24 4525.98 4525.47 4525.47 4526.24 4524.96 4525.22 4525.22 4525.98 4524.71 4525.73 4525.47 4524.96 4525.73 4524.71 4524.96 4524.96 4525.73 4525.22 4526.24 4525.47 4524.45 4601.67 XR: 406.19 409.60 408.25 409.29 413.15 407.22 408.23 407.01 415.24 407.40 411.51 409.08 412.05 408.49 411.15 410.93 411.51 413.92 413.60 406.63 406.04 409.82 408.76 405.18 412.25 410.13 411.95 407.45 414.37 409.52 411.60 414.05 408.46 413.39 412.58 411.46 407.93 409.07 407.07 410.31 416.47 459.16 4787.24 4811.41 4787.30 4803.40 4803.40 4786.73 4811.51 4795.37 4803.41 4803.40 4803.46 4795.41 4811.49 4794.94 4795.45 4819.58 4811.40 4811.47 4803.47 4787.33 4803.50 4803.50 4811.61 4795.37 4803.24 4811.50 4803.53 4795.46 4811.54 4795.50 4795.53 4803.55 4803.60 4819.65 4811.58 4819.67 4803.50 4811.31 4787.42 4803.59 4811.54 YR: 266.33 290.82 266.33 282.65 282.65 266.33 290.82 274.49 282.65 282.65 282.65 274.49 290.82 274.49 274.49 298.98 290.82 290.82 282.65 266.33 282.65 282.65 290.82 274.49 282.65 290.82 282.65 274.49 290.82 274.49 274.49 282.65 282.65 298.98 290.82 298.98 282.65 290.82 266.33 282.65 290.82 4526.24 1.577 1.577 1.578 1.578 1.578 1.579 1.579 1.580 1.580 1.580 1.581 1.581 1.582 1.582 1.582 1.582 1.582 1.582 1.582 1.582 1.582 1.583 1.584 1.584 1.584 1.585 1.585 1.585 1.586 1.586 1.586 1.586 1.586 1.586 1.586 1.587 1.587 1.587 1.588 1.588 1.588 Centre: XC: 404.30 YC: Generated failure surface: (20 points) 216.22 4601.67 226.08 4565.33 270.45 4534.12 334.47 4520.76 403.58 4526.24 4557.75 4529.97 4520.34 282.61 348.04 417.58 4778.51 4591.73 4550.82 4526.55 4520.69 236.46 295.13 361.78 431.53 Radius: R: 4582.35 4544.56 4523.87 4521.78 Slice Geometry and Properties - Critical Failure Surface (circle 1, 46 slices) Slice Test Factor 1 1.09 2 0.97 3 0.96 4 1.06 5 0.94 6 0.94 7 0.93 8 0.93 9 0.92 10 0.92 11 0.92 12 0.91 13 0.91 14 0.91 X -Left 216.22 223.18 225.17 228.40 236.46 241.90 247.34 253.01 258.68 260.30 265.38 270.45 276.53 282.61 X -S Area 24.50 15.95 34.17 126.74 117.32 141.34 171.52 194.86 59.73 198.60 215.44 277.58 296.23 329.76 Angle 45.2 45.2 43.0 42.1 39.0 39.0 35.9 35.9 32.8 32.8 32.8 29.7 29.7 26.6 Width 6.97 1.99 3.23 8.07 5.44 5.44 5.67 5.67 1.62 5.08 5.08 6.08 6.08 6.39 Base Length Matl Cohesion 9.89 6 50.00 2.82 2 10.00 4.41 2 10.00 10.88 6 50.00 7.00 2 10.00 7.00 2 10.00 7.00 2 10.00 7.00 2 10.00 1.92 2 10.00 6.04 2 10.00 6.04 2 10.00 7.00 2 10.00 7.00 2 10.00 7.14 2 10.00 Phi 25.0 35.0 35.0 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 258.16 247.34 307.97 375.64 445.41 Weight 2449.98 1624.99 3664.37 14085.34 13283.95 16404.77 20242.63 23274.05 7178.34 23970.75 26153.01 33893.99 36390.40 40722.46 4573.54 4538.99 4521.94 4523.64 PoreWater Force 0.00 0.00 427.36 4516.28 5460.64 7384.67 9242.01 11034.15 3340.71 11299.01 12530.62 15996.44 17510.49 19348.65 258.68 321.10 389.59 459.16 Normal Stress 243.88 555.76 820.74 1435.31 1989.04 2481.94 3006.93 3472.27 3821.26 4070.40 4448.89 4890.89 5261.14 5690.77 15 0.84 16 0.84 17 0.91 18 0.91 19 0.91 20 0.91 21 0.91 22 0.91 23 0.91 24 0.92 25 0.92 26 0.92 27 0.92 28 0.92 29 0.94 30 0.94 31 0.95 32 0.95 33 0.97 34 1.00 35 1.00 36 1.00 289.00 291.01 292.00 295.13 300.35 305.57 307.97 313.15 318.33 321.10 328.65 334.47 339.78 345.09 348.04 354.91 361.78 368.71 375.64 378.54 384.06 389.59 107.35 53.96 173.34 299.04 311.27 146.03 312.85 309.77 164.03 441.80 333.77 298.79 292.18 159.08 361.83 348.10 336.02 319.37 128.17 235.46 223.20 263.58 26.6 2.01 2.24 5 26.6 0.99 1.11 5 26.6 3.13 3.50 2 23.5 5.22 5.69 2 23.5 5.22 5.69 2 23.5 2.40 2.62 2 20.4 5.18 5.52 2 20.4 5.18 5.52 2 20.4 2.76 2.95 2 17.2 7.55 7.90 2 17.3 5.82 6.09 2 14.1 5.31 5.48 2 14.1 5.31 5.48 2 14.1 2.95 3.04 2 11.0 6.87 7.00 2 11.0 6.87 7.00 2 7.9 6.93 7.00 2 7.9 6.93 7.00 2 4.8 2.89 2.90 2 4.8 5.53 5.55 3 4.8 5.53 5.55 3 1.7 7.00 7.00 3 0.00 0.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 1000.00 1000.00 1000.00 45.0 45.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 0.0 0.0 0.0 11186.26 5396.39 19275.33 33288.33 34687.77 16302.41 35063.32 34904.63 18531.99 49902.23 37809.77 34051.86 33498.19 18293.86 41610.41 40031.95 38686.51 36872.20 14825.95 27255.56 25850.74 30544.28 3150.15 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 0.00 184.46 606.27 361.11 812.58 973.99 1376.31 4549.26 4090.84 5004.03 5319.53 5543.29 5656.77 5784.62 5758.46 5729.84 5786.50 5686.99 5743.76 5650.34 5567.95 5559.93 5348.82 5247.23 5004.79 4936.92 4876.02 4621.83 4346.56 37 1.00 38 1.00 39 1.00 40 1.00 41 1.00 42 1.01 43 1.01 44 1.07 45 1.11 46 1.11 396.59 403.58 410.58 417.58 424.55 431.53 437.14 442.74 445.41 452.28 X -S Area: 241.27 217.66 192.69 165.96 138.47 90.50 71.03 26.90 47.88 15.96 9031.05 1.7 -1.4 - 1.4 - 4.5 - 4.5 - 7.6 - 7.6 - 7.6 -10.7 -10.7 7.00 7.00 7.00 6.98 6.98 5.61 5.61 2.66 6.88 6.88 7.00 7.00 7.00 7.00 7.00 5.66 5.66 2.69 7.00 7.00 Path Length: 265.96 3 1000.00 0.0 3 1000.00 0.0 3 1000.00 0.0 3 1000.00 0.0 3 1000.00 0.0 3 1000.00 0.0 3 1000.00 0.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 27974.05 25247.81 22357.73 19258.88 16067 .10 10494.70 8226.91 3107.84 5506.55 1835.40 X -S Weight: 1041286.00 1467.80 1476.34 1401.92 1244.95 1005.04 583.21 318.83 58.82 0.00 0.00 3979.10 3624.27 3211.27 2811.63 2354.14 1959.16 1554.67 1243.18 877.95 293.54 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm Pit File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS2-Mining.gmf Processed: 27 Feb 2024 09:42:34 DATA: Analysis 1 - Slope Stability - Case SS -2 Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (15 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4620.00 Profile: 2 (2 points) 0.00 4606.18 Profile: 3 (2 points) 241.50 4606.18 Profile: 4 (2 points) 238.50 4607.18 Profile: 5 (2 points) 0.00 4590.00 Profile: 6 (2 points) 241.50 4590.00 Profile: 7 (2 points) 0.00 4584.18 Profile: 8 (2 points) 241.50 4584.18 Profile: 9 (2 points) 0.00 4581.18 Profile: 10 (2 points) 241.50 4581.18 Profile: 11 (2 points) 0.00 4579.18 Profile: 12 (2 points) 241.50 4579.18 Profile: 13 (4 points) 0.00 4532.87 Profile: 14 (5 points) 241.50 4531.61 4528.00 Profile: 15 (9 points) 0.00 4530.87 4529.61 408.47 4529.98 Slope Surface (15 points) 4618.10 4614.99 4606.76 0.00 4610.28 182.26 4607.18 255.01 4528.00 700.00 Material beneath: 238.50 Material beneath: 700.00 4620.00 2 - Sand and 4606.18 2 - Sand and 4606.18 Material beneath: 5 - Slurry 241.50 4607.18 Material beneath: 6 - Clay 238.50 4590.00 Material beneath: 6 - Clay 700.00 4590.00 Material beneath: 2 - Sand 238.50 4584.18 Material beneath: 2 - Sand 700.00 4584.18 Material beneath: 6 - Clay 238.50 4581.18 Material beneath: 6 - Clay 700.00 4581.18 Material beneath: 2 - Sand and Gravel 238.50 4579.18 Material beneath: 2 - Sand and Gravel 700.00 4579.18 Material beneath: 3 - Weathered Claystone Bedrock 60.58 4532.87 190.93 4531.60 Material beneath: 3 - Weathered Claystone Bedrock 408.47 4531.98 472.67 4532.14 Gravel Gravel Wall and Gravel and Gravel Material beneath: 4 - Stable Claystone Bedrock 60.58 4530.87 190.93 4529.60 Phreatic Surface (4 points) 0.00 4595.18 472.67 4530.14 57.07 196.20 408.47 4618.10 4614.14 4531.98 238.50 4595.18 613.33 4527.04 156.63 200.00 472.67 4617.39 4612.45 4532.14 241.50 4531.98 238.50 4531.61 613.33 4529.04 238.50 4529.61 700.00 4526.00 166.52 238.50 613.33 4610.32 4607.18 4529.04 408.47 4531.98 700.00 241.50 173.33 241.50 700.00 Failure Surface Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 196.20 YL: 4614.14 XR: 408.47 YR: Centre: XC: 382.68 YC: 4780.65 Radius: R: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: e- XL 10.00 20 XR 10.00 20 - - a S. _ _ - _ R 200.00 50 RESULTS: Analysis 1 - Slope Stability - Case SS -2 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: 1.886 Analysis Summary SSISISSSSSISS 4531.98 250.00 There were: 18184 successful analyses from a total of 20001 trial failure surfaces 1817 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.74 Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 X -Left 199.09 199.62 195.94 193.31 200.15 198.57 196.46 197.52 195.41 Y -Left 4612.85 4612.62 4614.16 4614.32 4612.43 4613.09 4614.02 4613.56 4614.19 X -Right 403.47 403.47 403.47 403.47 403.47 404.00 403.47 404.52 404.00 Y -Right 4534.42 4534.42 4534.42 4534.42 4534.42 4534.16 4534.42 4533.90 4534.16 X -Centre 360.82 361.13 360.65 360.21 361.47 362.49 361.02 363.85 362.19 Y -Centre 4728.77 4728.84 4732.91 4736.99 4728.91 4732.93 4732.99 4737.01 4737.04 s - Radius 198.98 198.98 203.06 207.14 198.98 203.06 203.06 207.14 207.14 FoS 1.742 1.748 1.750 1.751 1.753 1.755 1.756 1.758 1.759 <-- Critical 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 199.09 193.83 200.67 191.20 192.78 201.20 196.99 200.15 200.67 199.62 198.04 198.04 195.94 197.52 194.88 201.20 194.36 192.25 191.73 196.99 193.31 198.04 200.15 198.57 200.67 194.36 196.46 199.62 194.88 195.41 194.88 197.52 194.36 199.09 192.78 201.20 191.73 192.25 200.67 193.83 191.20 196.46 196.46 198.57 196.99 4612.85 4614.28 4612.36 4614.44 4614.35 4612.29 4613.79 4612.43 4612.36 4612.62 4613.32 4613.32 4614.16 4613.56 4614.22 4612.29 4614.25 4614.38 4614.41 4613.79 4614.32 4613.32 4612.43 4613.09 4612.36 4614.25 4614.02 4612.62 4614.22 4614.19 4614.22 4613.56 4614.25 4612.85 4614.35 4612.29 4614.41 4614.38 4612.36 4614.28 4614.44 4614.02 4614.02 4613.09 4613.79 404.00 403.47 403.47 403.47 404.00 404.52 403.47 405.05 404.52 404.00 404.52 404.00 404.00 403.47 404.52 403.47 403.47 404.52 403.47 405.05 404.00 403.47 404.00 404.52 405.05 404.52 404.00 405.58 404.00 404.52 403.47 405.05 405.05 404.52 404.52 405.05 405.05 403.47 404.00 404.00 404.00 405.58 405.05 403.47 404.00 4534.16 4534.42 4534.42 4534.42 4534.16 4533.90 4534.42 4533.65 4533.90 4534.16 4533.90 4534.16 4534.16 4534.42 4533.90 4534.42 4534.42 4533.90 4534.42 4533.65 4534.16 4534.42 4534.16 4533.90 4533.65 4533.90 4534.16 4533.39 4534.16 4533.90 4534.42 4533.65 4533.65 4533.90 4533.90 4533.65 4533.65 4534.42 4534.16 4534.16 4534.16 4533.39 4533.65 4534.42 4534.16 362.80 360.65 361.88 360.19 361.74 364.50 361.33 365.64 364.09 363.11 364.15 362.18 362.63 361.64 363.72 362.29 361.08 363.25 360.63 365.51 362.17 361.95 363.44 364.46 366.05 363.28 363.00 367.27 361.75 364.16 361.52 365.81 365.24 364.77 363.68 366.47 364.75 361.06 363.85 362.61 362.13 367.16 365.20 362.26 363.31 4733.00 4737.08 4729.00 4741.16 4741.11 4732.98 4733.06 4737.01 4732.90 4733.06 4737.07 4732.87 4737.13 4733.12 4741.15 4729.09 4737.18 4745.22 4741.25 4741.14 4741.20 4733.19 4733.13 4737.14 4737.09 4741.06 4737.21 4741.11 4736.95 4741.23 4737.27 4741.20 4745.24 4737.20 4745.30 4737.17 4749.30 4741.34 4733.21 4741.29 4745.36 4745.24 4741.08 4733.25 4737.27 203.06 207.14 198.98 211.22 211.22 203.06 203.06 207.14 203.06 203.06 207.14 203.06 207.14 203.06 211.22 198.98 207.14 215.31 211.22 211.22 211.22 203.06 203.06 207.14 207.14 211.22 207.14 211.22 207.14 211.22 207.14 211.22 215.31 207.14 215.31 207.14 219.39 211.22 203.06 211.22 215.31 215.31 211.22 203.06 207.14 1.760 1.760 1.760 1.760 1.760 1.761 1.761 1.764 1.764 1.764 1.764 1.766 1.766 1.766 1.766 1.766 1.767 1.767 1.767 1.767 1.768 1.768 1.769 1.769 1.769 1.770 1.771 1.772 1.772 1.772 1.773 1.773 1.773 1.773 1.773 1.774 1.774 1.774 1.774 1.774 1.774 1.775 1.775 1.775 1.775 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 200.15 197.52 199.62 198.04 193.83 195.94 194.88 193.83 195.41 201.20 192.25 199.09 194.36 191.20 191.73 199.09 193.31 200.67 196.99 192.78 191.73 198.57 195.94 200.15 192.25 198.04 199.62 196.46 199.62 194.36 195.41 196.99 201.20 199.09 195.94 197.52 193.31 191.73 194.88 193.83 195.94 192.78 200.67 192.25 191.20 4612.43 4613.56 4612.62 4613.32 4614.28 4614.16 4614.22 4614.28 4614.19 4612.29 4614.38 4612.85 4614.25 4614.44 4614.41 4612.85 4614.32 4612.36 4613.79 4614.35 4614.41 4613.09 4614.16 4612.43 4614.38 4613.32 4612.62 4614.02 4612.62 4614.25 4614.19 4613.79 4612.29 4612.85 4614.16 4613.56 4614.32 4614.41 4614.22 4614.28 4614.16 4614.35 4612.36 4614.38 4614.44 405.58 404.00 404.52 405.05 405.05 404.52 405.05 405.58 403.47 404.00 405.05 403.47 404.00 405.58 404.52 406.10 404.52 405.58 405.58 403.47 404.00 405.05 406.10 404.52 404.00 404.00 406.10 404.52 403.47 405.58 405.05 404.52 405.58 405.05 405.58 405.58 406.10 405.58 404.00 404.52 403.47 405.05 404.52 404.00 404.52 4533.39 4534.16 4533.90 4533.65 4533.65 4533.90 4533.65 4533.39 4534.42 4534.16 4533.65 4534.42 4534.16 4533.39 4533.90 4533.13 4533.90 4533.39 4533.39 4534.42 4534.16 4533.65 4533.13 4533.90 4534.16 4534.16 4533.13 4533.90 4534.42 4533.39 4533.65 4533.90 4533.39 4533.65 4533.39 4533.39 4533.13 4533.39 4534.16 4533.90 4534.42 4533.65 4533.90 4534.16 4533.90 367.60 363.61 365.07 366.12 364.80 364.59 365.67 366.74 361.96 364.27 365.18 362.57 363.04 366.24 362.81 368.92 364.12 368.01 367.47 361.50 362.57 366.42 368.74 365.41 361.30 363.92 369.22 364.97 362.87 367.18 366.11 365.27 368.43 366.73 366.79 367.77 368.24 366.68 363.48 364.56 362.39 365.62 365.82 363.01 364.07 4741.17 4737.33 4737.25 4741.25 4745.16 4741.32 4745.32 4749.31 4737.36 4733.30 4749.38 4733.31 4741.38 4753.37 4745.13 4745.21 4745.38 4741.25 4745.30 4741.43 4745.44 4741.31 4749.32 4737.32 4741.02 4737.39 4745.26 4741.39 4733.38 4749.39 4745.40 4741.45 4741.32 4741.37 4745.17 4745.35 4753.37 4753.45 4741.46 4745.47 4737.45 4749.46 4737.40 4745.53 4749.53 211.22 1.776 207.14 1.777 207.14 1.777 211.22 1.777 215.31 1.777 211.22 1.778 215.31 1.779 219.39 1.779 207.14 1.779 203.06 1.779 219.39 1.779 203.06 1.779 211.22 1.779 223.47 1.780 215.31 1.780 215.31 1.780 215.31 1.780 211.22 1.780 215.31 1.780 211.22 1.780 215.31 1.780 211.22 1.781 219.39 1.781 207.14 1.781 211.22 1.782 207.14 1.782 215.31 1.783 211.22 1.783 203.06 1.783 219.39 1.784 215.31 1.784 211.22 1.784 211.22 1.784 211.22 1.784 215.31 1.784 215.31 1.784 223.47 1.784 223.47 1.785 211.22 1.785 215.31 1.785 207.14 1.785 219.39 1.785 207.14 1.785 215.31 1.786 219.39 1.786 Critical Failure Surface (circle 1) Intersects: XL: 199.09 YL: Centre: XC: 360.82 YC: Generated failure surface: (20 points) 199.09 4612.85 206.50 4577.05 241.62 4545.28 295.25 4530.61 355.01 4534.42 4569.45 4540.91 4529.88 251.60 306.89 367.20 4612.85 4728.77 4603.16 4562.45 4537.24 4529.89 XR: 403.47 YR: 4534.42 214.49 262.00 318.73 379.38 Radius: R: 4593.94 4556.07 4534.30 4530.66 Slice Geometry and Properties - Critical Failure Surface (circle 1, 48 slices) Slice Test X -Left Factor 1 199.09 1.22 2 200.00 1.22 3 204.19 1.08 4 206.50 1.04 5 209.96 1.04 6 213.41 1.04 7 214.49 1.01 8 218.35 1.12 9 223.02 1.09 10 224.19 0.99 11 227.51 1.09 12 229.72 0.99 X -S Area Angle 0.35 52.6 13.58 52.6 16.26 52.6 35.11 49.1 47.27 49.1 17.15 49.1 70.40 45.6 102.87 45.6 28.47 42.1 87.17 42.1 62.81 42.1 70.88 42.1 Width 0.91 4.19 2.31 3.46 3.46 1.07 3.86 4.67 1.16 3.32 2.22 2.35 Base Length Matl Cohesion 1.49 6 50.00 6.91 6 50.00 3.80 2 10.00 5.28 2 10.00 5.28 2 10.00 1.64 2 10.00 5.52 2 10.00 6.68 6 50.00 1.56 6 50.00 4.48 2 10.00 2.98 6 50.00 3.17 2 10.00 Phi 25.0 25.0 35.0 35.0 35.0 35.0 35.0 25.0 25.0 35.0 25.0 35.0 198.98 223.02 272.77 330.72 391.48 Weight 35.36 1358.41 1678.33 3771.23 5194.11 1911.78 8049.39 11951.91 3311.20 10221.76 7417.30 8405.03 4585.23 4550.34 4532.08 4532.17 PoreWater Force 0.00 0.00 0.00 0.00 0.00 63.37 1105.06 3153.68 1022.70 3492.06 2793.64 3377.16 232.08 283.87 342.83 403.47 Normal Stress 1.12 212.06 471.81 740.73 1021.87 1224.72 1532.26 2086.38 2402.85 2460.90 2857.79 2899.13 13 232.08 212.70 38.6 6.42 8.21 2 10.00 35.0 25560.57 10599.03 3324.53 0.97 14 238.50 40.94 38.6 1.15 1.47 5 0.00 45.0 4227.29 1063.51 2756.89 0.88 15 239.65 68.38 38.6 1.85 2.37 5 0.00 45.0 6837.86 0.00 2531.62 0.88 16 241.50 198.72 35.1 5.05 6.18 2 10.00 35.0 22190.98 0.00 3421.38 0.95 17 246.55 215.83 35.0 5.05 6.17 2 10.00 35.0 24170.03 0.00 3729.39 0.95 18 251.60 154.72 31.5 3.41 4.00 2 10.00 35.0 17360.67 0.00 4084.66 0.94 19 255.01 55.28 31.5 1.19 1.40 2 10.00 35.0 6212.74 0.00 4187.13 0.94 20 256.20 272.14 31.5 5.80 6.80 2 10.00 35.0 30616.01 0.00 4231.53 0.94 21 262.00 255.24 28.0 5.38 6.10 2 10.00 35.0 28721.12 0.00 4392.18 0.93 22 267.38 256.54 28.0 5.38 6.10 2 10.00 35.0 28870.77 0.00 4415.08 0.93 23 272.77 264.62 24.5 5.55 6.10 2 10.00 35.0 29779.88 0.00 4533.21 0.93 24 278.32 263.65 24.5 5.55 6.10 2 10.00 35.0 29668.32 0.00 4516.09 0.93 25 283.87 261.01 21.0 5.54 5.93 2 10.00 35.0 29366.82 0.00 4592.63 0.93 26 289.40 272.32 21.0 5.85 6.27 2 10.00 35.0 30755.40 0.00 4552.61 0.93 27 295.25 278.55 17.5 6.09 6.39 2 10.00 35.0 31714.76 0.00 4618.90 0.93 28 301.35 247.80 17.5 5.54 5.81 2 10.00 35.0 28331.03 0.00 4536.32 0.93 29 306.89 206.11 14.0 4.72 4.86 2 10.00 35.0 23621.53 0.00 4549.29 0.94 30 311.61 151.93 14.0 3.56 3.67 2 10.00 35.0 17471.56 0.00 4461.52 0.94 31 315.17 148.90 14.0 3.56 3.67 2 10.00 35.0 17124.03 0.00 4372.97 0.94 32 318.73 242.95 10.5 6.00 6.10 2 10.00 35.0 27939.11 0.00 4335.70 0.95 33 324.72 232.06 10.5 6.00 6.10 2 10.00 35.0 26686.82 0.00 4141.34 0.95 34 330.72 31.67 6.9 0.84 0.85 2 10.00 35.0 3642.47 0.00 4124.85 0.96 35 0.96 36 1.01 37 1.01 38 1.00 39 1.00 40 1.00 41 1.00 42 1.00 43 1.00 44 1.01 45 1.01 46 1.06 47 1.10 48 1.10 331.56 332.94 337.88 342.83 348.92 355.01 361.10 367.20 373.29 379.38 384.51 389.63 391.48 397.48 X -S Area: 51.16 178.41 169.47 195.17 179.33 162.63 144.45 124.91 104.52 71.44 55.34 15.98 36.37 12.12 6385.69 6.9 6.9 6.9 3.4 3.4 - 0.1 - 0.1 - 3.6 - 3.6 - 7.1 -7.1 -7.1 -10.6 -10.6 1.37 4.95 4.95 6.09 6.09 6.10 6.10 6.09 6.09 5.13 5.13 1.85 5.99 5.99 1.38 4.98 4.98 6.10 6.10 6.10 6.10 6.10 6.10 5.17 5.17 1.86 6.10 6.10 _wawa a Path Length: 231.76 2 10.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 2 10.00 2 10.00 2 10.00 35.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 35.0 35.0 35.0 X -S Weight: 5885.20 20536.74 19522.89 22500.32 20688.76 18772.98 16681.89 14427.16 12070.26 8243.80 6375.28 1837.80 4182.62 1394.20 727295.56 7.21 145.74 333.09 591.86 730.67 798.50 795.34 721.01 575.32 322.84 116.53 0.00 0.00 0.00 4081.80 4082.13 3877.16 3661.41 3363.91 3078.87 2736.04 2406.23 2019.02 1678.91 1314.54 1048.68 755.78 252.70 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm Pit File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS2-EQ-Mining.gmf Processed: 27 Feb 2024 12:35:58 DATA: Analysis 1 - Slope Stability - Case SS -2 Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (15 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4620.00 Profile: 2 (2 points) 0.00 4606.18 Profile: 3 (2 points) 241.50 4606.18 Profile: 4 (2 points) 238.50 4607.18 Profile: 5 (2 points) 0.00 4590.00 Profile: 6 (2 points) 241.50 4590.00 Profile: 7 (2 points) 0.00 4584.18 Profile: 8 (2 points) 241.50 4584.18 Profile: 9 (2 points) 0.00 4581.18 Profile: 10 (2 points) 241.50 4581.18 Profile: 11 (2 points) 0.00 4579.18 Profile: 12 (2 points) 241.50 4579.18 Profile: 13 (4 points) 0.00 4532.87 Profile: 14 (5 points) 241.50 4531.61 4528.00 Profile: 15 (9 points) 0.00 4530.87 4529.61 408.47 4529.98 Slope Surface (15 points) 4618.10 4614.99 4606.76 0.00 4610.28 182.26 4607.18 255.01 4528.00 700.00 4620.00 Material beneath: 2 - Sand and Gravel 238.50 4606.18 Material beneath: 2 - Sand and Gravel 700.00 4606.18 Material beneath: 5 - Slurry Wall 241.50 4607.18 Material beneath: 6 - Clay 238.50 4590.00 Material beneath: 6 - Clay 700.00 4590.00 Material beneath: 2 - Sand and Gravel 238.50 4584.18 Material beneath: 2 - Sand and Gravel 700.00 4584.18 Material beneath: 6 - Clay 238.50 4581.18 Material beneath: 6 - Clay 700.00 4581.18 Material beneath: 2 - Sand and Gravel 238.50 4579.18 Material beneath: 2 - Sand and Gravel 700.00 4579.18 Material beneath: 3 - Weathered Claystone Bedrock 60.58 4532.87 190.93 4531.60 Material beneath: 3 - Weathered Claystone Bedrock 408.47 4531.98 472.67 4532.14 Material beneath: 4 - Stable Claystone Bedrock 60.58 4530.87 190.93 4529.60 Phreatic Surface (4 points) 0.00 4595.18 472.67 4530.14 57.07 196.20 408.47 4618.10 4614.14 4531.98 238.50 4595.18 613.33 4527.04 156.63 200.00 472.67 4617.39 4612.45 4532.14 241.50 4531.98 238.50 4531.61 613.33 4529.04 238.50 4529.61 700.00 4526.00 166.52 238.50 613.33 4610.32 4607.18 4529.04 408.47 4531.98 700.00 241.50 173.33 241.50 700.00 Failure Surface Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 196.20 YL: 4614.14 XR: 408.47 YR: Centre: XC: 382.68 YC: 4780.65 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.063 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: - __ a -- -a a a XL 10.00 20 XR 10.00 20 R 200.00 50 - 7 a a RESULTS: Analysis 1 -- Slope Stability - Case 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: Analysis Summary 1.599 4531.98 250.00 There were: 18184 successful analyses from a total of 20001 trial failure surfaces 1817 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.47 w a - - a a Negative normal stresses exist on the base of one or more slices; examine slice data and consult the GALENA Help utility Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 X -Left 199.09 193.31 199.62 Y -Left 4612.85 4614.32 4612.62 X -Right 403.47 403.47 403.47 Y -Right 4534.42 4534.42 4534.42 X -Centre 360.82 360.21 361.13 Y -Centre 4728.77 4736.99 4728.84 Radius 198.98 207.14 198.98 FoS 1.473 1.477 1.477 <-- Critical 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 195.94 200.15 196.46 198.57 191.20 193.83 192.78 195.41 197.52 199.09 196.99 200.67 201.20 191.73 192.25 194.36 194.88 193.31 198.04 195.94 199.62 200.15 197.52 200.67 198.04 196.99 194.36 201.20 198.04 198.57 200.15 191.20 192.78 192.25 191.73 196.46 194.88 194.88 200.67 195.41 194.36 193.83 197.52 199.62 199.09 4614.16 4612.43 4614.02 4613.09 4614.44 4614.28 4614.35 4614.19 4613.56 4612.85 4613.79 4612.36 4612.29 4614.41 4614.38 4614.25 4614.22 4614.32 4613.32 4614.16 4612.62 4612.43 4613.56 4612.36 4613.32 4613.79 4614.25 4612.29 4613.32 4613.09 4612.43 4614.44 4614.35 4614.38 4614.41 4614.02 4614.22 4614.22 4612.36 4614.19 4614.25 4614.28 4613.56 4612.62 4612.85 403.47 403.47 403.47 404.00 403.47 403.47 404.00 404.00 404.52 404.00 403.47 403.47 404.52 403.47 404.52 403.47 404.52 404.00 404.52 404.00 404.00 405.05 403.47 404.52 404.00 405.05 404.52 403.47 403.47 404.52 404.00 404.00 404.52 403.47 405.05 404.00 403.47 404.00 405.05 404.52 405.05 404.00 405.05 405.58 404.52 4534.42 4534.42 4534.42 4534.16 4534.42 4534.42 4534.16 4534.16 4533.90 4534.16 4534.42 4534.42 4533.90 4534.42 4533.90 4534.42 4533.90 4534.16 4533.90 4534.16 4534.16 4533.65 4534.42 4533.90 4534.16 4533.65 4533.90 4534.42 4534.42 4533.90 4534.16 4534.16 4533.90 4534.42 4533.65 4534.16 4534.42 4534.16 4533.65 4533.90 4533.65 4534.16 4533.65 4533.39 4533.90 360.65 361.47 361.02 362.49 360.19 360.65 361.74 362.19 363.85 362.80 361.33 361.88 364.50 360.63 363.25 361.08 363.72 362.17 364.15 362.63 363.11 365.64 361.64 364.09 362.18 365.51 363.28 362.29 361.95 364.46 363.44 362.13 363.68 361.06 364.75 363.00 361.52 361.75 366.05 364.16 365.24 362.61 365.81 367.27 364.77 4732.91 4728.91 4732.99 4732.93 4741.16 4737.08 4741.11 4737.04 4737.01 4733.00 4733.06 4729.00 4732.98 4741.25 4745.22 4737.18 4741.15 4741.20 4737.07 4737.13 4733.06 4737.01 4733.12 4732.90 4732.87 4741.14 4741.06 4729.09 4733.19 4737.14 4733.13 4745.36 4745.30 4741.34 4749.30 4737.21 4737.27 4736.95 4737.09 4741.23 4745.24 4741.29 4741.20 4741.11 4737.20 203.06 198.98 203.06 203.06 211.22 207.14 211.22 207.14 207.14 203.06 203.06 198.98 203.06 211.22 215.31 207.14 211.22 211.22 207.14 207.14 203.06 207.14 203.06 203.06 203.06 211.22 211.22 198.98 203.06 207.14 203.06 215.31 215.31 211.22 219.39 207.14 207.14 207.14 207.14 211.22 215.31 211.22 211.22 211.22 207.14 1.478 1.483 1.483 1.484 1.484 1.485 1.485 1.486 1.486 1.488 1.488 1.489 1.490 1.490 1.491 1.491 1.491 1.492 1.492 1.492 1.492 1.492 1.493 1.493 1.493 1.494 1.494 1.495 1.495 1.496 1.496 1.496 1.497 1.497 1.497 1.497 1.497 1.497 1.497 1.497 1.497 1.498 1.499 1.499 1.500 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 196.46 196.46 196.99 198.57 193.83 200.67 191.20 192.25 201.20 191.73 191.73 197.52 192.78 193.83 194.36 193.31 194.88 195.41 200.15 195.94 198.04 199.62 192.25 199.09 196.99 195.94 199.09 191.73 201.20 198.57 191.20 192.25 200.67 194.36 192.78 200.15 193.31 193.83 195.41 196.46 198.04 194.88 193.31 195.94 196.99 4614.02 4614.02 4613.79 4613.09 4614.28 4612.36 4614.44 4614.38 4612.29 4614.41 4614.41 4613.56 4614.35 4614.28 4614.25 4614.32 4614.22 4614.19 4612.43 4614.16 4613.32 4612.62 4614.38 4612.85 4613.79 4614.16 4612.85 4614.41 4612.29 4613.09 4614.44 4614.38 4612.36 4614.25 4614.35 4612.43 4614.32 4614.28 4614.19 4614.02 4613.32 4614.22 4614.32 4614.16 4613.79 405.05 405.58 404.00 403.47 405.05 404.00 405.58 405.05 405.05 404.52 404.00 404.00 403.47 405.58 404.00 404.52 405.05 403.47 405.58 404.52 405.05 404.52 404.00 403.47 405.58 406.10 406.10 405.58 404.00 405.05 404.52 404.00 405.58 405.58 405.05 404.52 406.10 404.52 405.05 404.52 404.00 404.00 403.47 405.58 404.52 4533.65 4533.39 4534.16 4534.42 4533.65 4534.16 4533.39 4533.65 4533.65 4533.90 4534.16 4534.16 4534.42 4533.39 4534.16 4533.90 4533.65 4534.42 4533.39 4533.90 4533.65 4533.90 4534.16 4534.42 4533.39 4533.13 4533.13 4533.39 4534.16 4533.65 4533.90 4534.16 4533.39 4533.39 4533.65 4533.90 4533.13 4533.90 4533.65 4533.90 4534.16 4534.16 4534.42 4533.39 4533.90 365.20 367.16 363.31 362.26 364.80 363.85 366.24 365.18 366.47 362.81 362.57 363.61 361.50 366.74 363.04 364.12 365.67 361.96 367.60 364.59 366.12 365.07 361.30 362.57 367.47 368.74 368.92 366.68 364.27 366.42 364.07 363.01 368.01 367.18 365.62 365.41 368.24 364.56 366.11 364.97 363.92 363.48 361.93 366.79 365.27 4741.08 4745.24 4737.27 4733.25 4745.16 4733.21 4753.37 4749.38 4737.17 4745.13 4745.44 4737.33 4741.43 4749.31 4741.38 4745.38 4745.32 4737.36 4741.17 4741.32 4741.25 4737.25 4741.02 4733.31 4745.30 4749.32 4745.21 4753.45 4733.30 4741.31 4749.53 4745.53 4741.25 4749.39 4749.46 4737.32 4753.37 4745.47 4745.40 4741.39 4737.39 4741.46 4741.52 4745.17 4741.45 211.22 215.31 207.14 203.06 215.31 203.06 223.47 219.39 207.14 215.31 215.31 207.14 211.22 219.39 211.22 215.31 215.31 207.14 211.22 211.22 211.22 207.14 211.22 203.06 215.31 219.39 215.31 223.47 203.06 211.22 219.39 215.31 211.22 219.39 219.39 207.14 223.47 215.31 215.31 211.22 207.14 211.22 211.22 215.31 211.22 1.500 1.500 1.500 1.501 1.501 1.501 1.501 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.504 1.505 1.505 1.506 1.506 1.506 1.506 1.506 1.506 1.507 1.507 1.507 1.507 1.507 1.507 1.507 1.507 1.507 1.507 1.508 1.508 1.508 1.508 94 95 96 97 98 99 195.94 199.62 199.62 197.52 199.09 191.20 4614.16 4612.62 4612.62 4613.56 4612.85 4614.44 Critical Failure Surface (circle 1) 403.47 403.47 406.10 405.58 405.05 406.10 Intersects: XL: 199.09 YL: Centre: XC: 360.82 YC: Generated failure surface: (20 points) 199.09 4612.85 206.50 4577.05 241.62 4545.28 295.25 4530.61 355.01 4534.42 4569.45 4540.91 4529.88 251.60 306.89 367.20 4534.42 4534.42 4533.13 4533.39 4533.65 4533.13 4612.85 4728.77 4603.16 4562.45 4537.24 4529.89 XR: 214.49 262.00 318.73 379.38 362.39 362.87 369.22 367.77 366.73 368.16 4737.45 4733.38 4745.26 4745.35 4741.37 4757.50 403.47 YR: Radius: R: 4593.94 4556.07 4534.30 4530.66 Slice Geometry and Properties - Critical Failure Surface (circle 1, 48 slices) Slice Test Factor 1 1.16 2 1.16 3 1.02 4 0.99 5 0.99 6 0.99 7 0.96 8 1.08 9 1.05 X -Left 199.09 200.00 204.19 206.50 209.96 213.41 214.49 218.35 223.02 X -S Area 0.35 13.58 16.26 35.11 47.27 17.15 70.40 102.87 28.47 Angle 52.6 52.6 52.6 49.1 49.1 49.1 45.6 45.6 42.1 Width 0.91 4.19 2.31 3.46 3.46 1.07 3.86 4.67 1.16 Base Length Matl Cohesion Phi 1.49 6 50.00 25.0 6.91 6 50.00 25.0 3.80 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 6 50.00 25.0 6 50.00 25.0 5.28 5.28 1.64 5.52 6.68 1.56 207.14 203.06 215.31 215.31 211.22 227.55 4534.42 198.98 223.02 272.77 330.72 391.48 Weight 35.36 1358.41 1678.33 3771.23 5194.11 1911.78 8049.39 11951.91 3311.20 1.508 1.509 1.509 1.509 1.509 1.510 4585.23 4550.34 4532.08 4532.17 PoreWater Force 0.00 0.00 0.00 0.00 0.00 63.37 1105.06 3153.68 1022.70 232.08 283.87 342.83 403.47 Normal Stress -3.79 197.58 442.94 699.31 965.02 1158.85 1464.15 2021.28 2338.95 10 0.94 11 1.05 12 0.94 13 0.93 14 0.83 15 0.83 16 0.92 17 0.92 18 0.91 19 0.91 20 0.91 21 0.90 22 0.90 23 0.90 24 0.90 25 0.91 26 0.91 27 0.91 28 0.91 29 0.92 30 0.92 31 0.92 224.19 227.51 229.72 232.08 238.50 239.65 241.50 246.55 251.60 255.01 256.20 262.00 267.38 272.77 278.32 283.87 289.40 295.25 301.35 306.89 311.61 315.17 87.17 62.81 70.88 212.70 40.94 68.38 198.72 215.83 154.72 55.28 272.14 255.24 256.54 264.62 263.65 261.01 272.32 278.55 247.80 206.11 151.93 148.90 42.1 42.1 42.1 38.6 38.6 38.6 35.1 35.0 31.5 31.5 31.5 28.0 28.0 24.5 24.5 21.0 21.0 17.5 17.5 14.0 14.0 14.0 3.32 2.22 2.35 6.42 1.15 1.85 5.05 5.05 3.41 1.19 5.80 5.38 5.38 5.55 5.55 5.54 5.85 6.09 5.54 4.72 3.56 3.56 4.48 2.98 3.17 8.21 1.47 2.37 6.18 6.17 4.00 1.40 6.80 6.10 6.10 6.10 6.10 5.93 6.27 6.39 5.81 4.86 3.67 3.67 2 10.00 6 50.00 2 10.00 2 10.00 5 0.00 5 0.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 35.0 25.0 35.0 35.0 45.0 45.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 10221.76 7417.30 8405.03 25560.57 4227.29 6837.86 22190.98 24170.03 17360.67 6212.74 30616.01 28721.12 28870.77 29779.88 29668.32 29366.82 30755.40 31714.76 28331.03 23621.53 17471.56 17124.03 3492.06 2793.64 3377.16 10599.03 1063.51 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 2382.07 2787.94 2813.16 3237.37 2646.41 2393.96 3288.00 3584.41 3941.29 4040.17 4083.04 4254.39 4276.58 4407.77 4391.10 4482.53 4443.49 4525.46 4444.53 4474.55 4388.18 4301.12 32 0.93 33 0.93 34 0.95 35 0.95 36 1.01 37 1.01 38 1.00 39 1.00 40 1.00 41 1.00 42 1.00 43 1.00 44 1.01 45 1.01 46 1.07 47 1.12 48 1.12 318.73 324.72 330.72 331.56 332.94 337.88 342.83 348.92 355.01 361.10 367.20 373.29 379.38 384.51 389.63 391.48 397.48 X -S Area: 242.95 232.06 31.67 51.16 178.41 169.47 195.17 179.33 162.63 144.45 124.91 104.52 71.44 55.34 15.98 36.37 12.12 6385.69 10.5 10.5 6.9 6.9 6.9 6.9 3.4 3.4 - 0.1 -0.1 - 3.6 - 3.6 - 7.1 - 7.1 - 7.1 -10.6 -10.6 6.00 6.00 0.84 1.37 4.95 4.95 6.09 6.09 6.10 6.10 6.09 6.09 5.13 5.13 1.85 5.99 5.99 6.10 2 10.00 6.10 2 10.00 0.85 2 10.00 1.38 2 10.00 4.98 3 1000.00 4.98 3 1000.00 6.10 3 1000.00 6.10 3 1000.00 6.10 3 1000.00 6.10 3 1000.00 6.10 3 1000.00 6.10 3 1000.00 5.17 3 1000.00 5.17 3 1000.00 1.86 2 10.00 6.10 2 10.00 6.10 2 10.00 Path Length: 231.76 35.0 35.0 35.0 35.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 35.0 35.0 35.0 X -S Weight: 27939.11 26686.82 3642.47 5885.20 20536.74 19522.89 22500.32 20688.76 18772.98 16681.89 14427.16 12070.26 8243.80 6375.28 1837.80 4182.62 1394.20 727295.56 0.00 0.00 0.00 7.21 145.74 333.09 591.86 730.67 798.50 795.34 721.01 575.32 322.84 116.53 0.00 0.00 0.00 4281.36 4089.43 4089.76 4047.10 4069.32 3864.35 3655.10 3357.61 3079.01 2736.19 2412.83 2025.63 1692.02 1327.64 1059.06 767.45 256.75 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS3-Mining.gmf Processed: 27 Feb 2024 09:35:09 DATA: Analysis 1 - Slope Stability - Case SS -3 Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4602.00 Profile: 2 (2 points) 0.00 4591.37 Profile: 3 (2 points) 228.50 4597.37 Profile: 4 (2 points) 231.50 4591.37 Profile: 5 (2 points) 0.00 4586.37 Profile: 6 (2 points) 231.50 4586.37 Profile: 7 (2 points) 0.00 4578.37 Profile: 8 (2 points) 231.50 4578.37 Profile: 9 (4 points) 0.00 4513.97 Profile: 10 (4 points) 231.50 4521.44 Profile: 11 (8 points) 0.00 4511.97 4519.44 393.74 4523.37 Slope Surface (14 points) 4599.65 4598.40 4597.74 0.00 4601.00 187.50 4597.37 245.00 700.00 4602.00 Material beneath: 2 - Sand and Gravel 228.50 4591.37 Material beneath: 5 - Slurry Wall 231.50 4597.37 Material beneath: 2 - Sand and Gravel 700.00 4591.37 Material beneath: 6 - Clay 228.50 4586.37 Material beneath: 6 - Clay 700.00 4586.37 Material beneath: 2 - Sand 228.50 4578.37 Material beneath: 2 -- Sand 700.00 4578.37 Material beneath: 3 - Weathered Claystone 54.33 4514.03 89.95 Material beneath: 3 - Weathered Claystone 393.74 4525.37 565.84 Material beneath: 4 - Stable Claystone Bedrock 54.33 4512.03 89.95 4517.08 Phreatic Surface (4 points) 0.00 Failure Surface 4589.37 565.84 4526.32 122.87 194.00 393.74 4599.65 4597.80 4525.37 228.50 4589.37 and Gravel and Gravel Bedrock 4518.08 Bedrock 4528.32 700.00 4527.00 140.53 206.20 565.84 4599.55 4597.24 4528.32 231.50 4525.37 Initial circular surface for critical search defined by: XL, XR, R Intersects: XL: 206.20 YL: 4597.24 XR: 393.47 YR: Centre: XC: 371.89 YC: 4749.46 Radius: R: Variable Restraints Parameter descriptor: XL XR R 228.50 700.00 228.50 147.19 228.50 700.00 4521.44 4529.00 4519.44 4601.00 4597.37 4529.00 393.74 4525.37 4525.50 225.00 231.50 177.60 231.50 Range of variation: 10.00 10.00 200.00 Trial positions within range: 20 20 50 r. a_ __ __ a - a - _ - _a - RESULTS: Analysis 1 - Slope Stability - Case SS -33 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: 1.937 Analysis Summary as a There were: 17413 successful analyses from a total of 20001 trial failure surfaces 2588 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.76 a a "EMS S Negative normal stresses exist on the base of one or more slices; examine slice data and consult the GALENA Help utility Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 X -Left 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 210.67 211.20 211.20 Y -Left 4597.27 4597.27 4597 .27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 X -Right 393.73 393.73 394.26 392.15 393.73 393.21 394.26 392.68 393.21 393.73 391.63 394.26 392.68 391.10 393.73 393.21 390.58 Y -Right 4525.37 4525.37 4525.38 4526.14 4525.37 4525.63 4525.38 4525.89 4525.63 4525.37 4526.40 4525.38 4525.89 4526.65 4525.37 4525.63 4526.91 X -Centre 416.02 414.45 415.96 415.13 412.87 415.72 414.40 415.42 414.15 411.30 414.83 412.83 413.86 414.53 415.44 412.58 414.23 Y -Centre 4849.61 4845.62 4849.65 4850.33 4841.63 4849.85 4845.67 4850.09 4845.86 4837.63 4850.57 4841.67 4846.10 4850.81 4849.65 4841.87 4851.05 Radius 325.00 320.92 325.00 325.00 316.84 325.00 320.92 325.00 320.92 312.76 325.00 316.84 320.92 325.00 325.00 316.84 325.00 FoS 1.756 1.758 1.758 1.759 1.759 1.760 1.760 1.761 1.761 1.761 1.761 1.762 1.762 1.762 1.763 1.763 1.763 <-- Critical 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 211.20 211.20 211.20 211.20 210.67 211.20 211.20 210.67 211.20 211.20 211.20 211.20 211.20 211.20 210.67 211.20 210.67 210.67 211.20 211.20 211.20 211.20 210.67 210.67 211.20 210.67 211.20 211.20 211.20 210.67 210.15 211.20 210.67 211.20 210.67 211.20 210.67 211.20 210.67 211.20 211.20 210.67 210.67 210.67 210.15 4597:27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 391.63 394.26 390.05 391.10 393.73 389.52 392.15 394.26 390.58 393.73 389.00 392.68 390.05 394.26 393.73 388.47 392.15 393.21 393.21 391.10 389.52 392.15 394.26 391.63 390.58 392.68 389.00 392.68 393.73 391.10 393.73 391.63 393.21 390.05 393.73 388.47 390.58 393.21 394.26 392.15 389.52 392.68 391.63 390.05 393.73 4526.40 4525.38 4527.17 4526.65 4525.37 4527.42 4526.14 4525.38 4526.91 4525.37 4527.68 4525.89 4527.17 4525.38 4525.37 4527.93 4526.14 4525.63 4525.63 4526.65 4527.42 4526.14 4525.38 4526.40 4526.91 4525.89 4527.68 4525.89 4525.37 4526.65 4525.37 4526.40 4525.63 4527.17 4525.37 4527.93 4526.91 4525.63 4525.38 4526.14 4527.42 4525.89 4526.40 4527.17 4525.37 413.26 411.26 413.93 412.97 413.87 413.63 413.56 415.38 412.67 409.72 413.33 412.29 412.37 409.68 412.30 413.03 414.55 415.14 411.01 411.40 412.07 411.99 413.82 414.25 411.11 414.84 411.77 410.72 408.15 413.95 414.86 411.70 413.58 410.81 410.73 411.47 413.65 409.43 412.26 410.42 410.51 413.28 412.69 413.35 413.30 4846.59 4837.67 4851.29 4846.83 4845.66 4851.53 4846.35 4849.69 4847.07 4833.63 4851.77 4842.12 4847.31 4833.67 4841.67 4852.00 4850.37 4849.89 4837.88 4842.84 4847.55 4842.36 4845.70 4850.61 4843.08 4850.13 4847.79 4838.12 4829.62 4850.85 4849.69 4842.60 4845.90 4843.32 4837.67 4848.03 4851.09 4833.88 4841.70 4838.36 4843.56 4846.14 4846.62 4851.33 4845.69 320.92 312.76 325.00 320.92 320.92 325.00 320.92 325.00 320.92 308.67 325.00 316.84 320.92 308.67 316.84 325.00 325.00 325.00 312.76 316.84 320.92 316.84 320.92 325.00 316.84 325.00 320.92 312.76 304.59 325.00 325.00 316.84 320.92 316.84 312.76 320.92 325.00 308.67 316.84 312.76 316.84 320.92 320.92 325.00 320.92 1.763 1.764 1.764 1.764 1.764 1.764 1.765 1.765 1.765 1.765 1.765 1.765 1.766 1.766 1.766 1.766 1.766 1.766 1.766 1.766 1.766 1.766 1.766 1.767 1.767 1.767 1.767 1.767 1.767 1.767 1.767 1.767 1.767 1.768 1.768 1.768 1.768 1.768 1.768 1.768 1.768 1.769 1.769 1.769 1.769 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 211.20 211.20 211.20 211.20 210.67 210.67 210.67 210.15 210.67 211.20 211.20 211.20 211.20 210.67 211.20 210.67 211.20 210.67 210.67 210.67 211.20 211.20 210.15 210.15 210.67 210.67 211.20 211.20 210.67 211.20 210.15 210.67 210.67 210.67 210.15 210.15 211.20 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.26 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 4597.26 4597.26 4597.27 Critical Failure Surface (circle 1) 392.68 389.00 390.58 391.63 393.21 391.10 389.52 394.26 392.15 393.73 390.05 388.47 394.26 393.73 392.15 390.58 391.10 394.26 392.68 389.00 393.21 389.52 393.73 393.21 390.05 393.21 391.63 392.68 388.47 389.00 394.26 392.15 391.10 389.52 391.63 392.68 388.47 Intersects: XL: 211.20 YL: Centre: XC: 416.02 YC: Generated failure surface: (20 points) 211.20 4597.27 219.45 4573.00 4525.89 4527.68 4526.91 4526.40 4525.63 4526.65 4527.42 4525.38 4526.14 4525.37 4527.17 4527.93 4525.38 4525.37 4526.14 4526.91 4526.65 4525.38 4525.89 4527.68 4525.63 4527.42 4525.37 4525.63 4527.17 4525.63 4526.40 4525.89 4527.93 4527.68 4525.38 4526.14 4526.65 4527.42 4526.40 4525.89 4527.93 4597.27 4849.61 4590.79 XR: 409.14 410.21 409.54 410.13 412.01 412.39 413.05 414.81 412.98 406.56 409.24 409.92 408.11 409.16 408.85 412.09 409.84 410.69 411.71 412.74 407.86 408.95 411.73 414.56 411.79 410.44 408.56 407.57 412.44 408.65 413.25 411.42 410.83 411.49 413.67 414.27 408.36 4834.12 4843.80 4839.09 4838.61 4841.91 4846.87 4851.57 4849.73 4846.38 4825.61 4839.33 4844.04 4829.66 4833.66 4834.36 4847.11 4838.85 4837.70 4842.15 4851.81 4829.87 4839.57 4841.70 4849.93 4847.35 4837.91 4834.61 4830.11 4852.05 4839.81 4845.73 4842.39 4842.88 4847.59 4850.65 4850.17 4840.06 393.73 YR: Radius: R: 227.90 4584.58 308.67 316.84 312.76 312.76 316.84 320.92 325.00 325.00 320.92 300.51 312.76 316.84 304.59 308.67 308.67 320.92 312.76 312.76 316.84 325.00 304.59 312.76 316.84 325.00 320.92 312.76 308.67 304.59 325.00 312.76 320.92 316.84 316.84 320.92 325.00 325.00 312.76 4525.37 325.00 1.769 1.769 1.769 1.769 1.769 1.769 1.769 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.770 1.771 1.771 1.771 1.771 1.771 1.771 1.771 1.771 1.771 1.771 1.771 1.771 1.772 1.772 1.772 236.55 4578.65 245.39 254.40 4549.18 301.81 4533.17 352.18 4525.37 4567.64 4545.34 4530.94 263.59 311.68 362.49 4562.57 4541.81 4529.05 272.93 321.67 372.87 4557.80 4538.60 4527.49 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test Factor 1 1.05 2 1.05 3 0.97 4 0.96 5 0.96 6 1.04 7 1.03 8 0.87 9 1.03 10 0.95 11 0.95 12 0.94 13 0.94 14 0.94 15 0.94 16 0.93 X -Left 211.20 214.96 218.71 219.45 221.39 225.47 227.90 228.75 231.50 236.55 240.78 245.00 249.70 254.40 258.09 263.59 X -S Area 5.58 16.74 4.59 14.02 38.69 28.90 11.10 39.33 86.18 85.59 97.48 116.42 118.82 94.59 142.55 125.20 Angle 38.1 38.1 38.1 36.3 36.3 36.3 34.4 34.4 34.4 32.6 32.6 30.9 30.7 28.9 28.9 27.0 Width 3.76 3.76 0.74 1.94 4.09 2.43 0.85 2.75 5.05 4.22 4.22 4.70 4.70 3.69 5.49 4.78 Base Length Matl Cohesion 4.78 6 50.00 4.78 6 50.00 0.94 2 10.00 2.40 2 10.00 5.07 2 10.00 3.02 6 50.00 1.03 6 50.00 3.33 5 0.00 6.13 6 50.00 5.01 2 10.00 5.01 2 10.00 5.48 2 10.00 5.47 2 10.00 4.21 2 10.00 6.28 2 10.00 5.37 2 10.00 Phi 25.0 25.0 35.0 35.0 35.0 25.0 25.0 45.0 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 282.42 331.76 383.28 Weight 558.16 1674.30 462.21 1439.71 4175.41 3214.57 1237.79 3933.06 8996.62 8943.28 10303.89 12456.03 12892.80 10385.14 15734.28 13823.92 4553.34 4535.72 4526.26 PoreWater Force 0.00 0.00 0.00 0.00 474.41 733.07 325.98 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 292.05 341.93 393.73 Normal Stress 104.45 350.31 474.70 571.93 808.56 1128.13 1266.32 1029.19 1489.69 1684.49 1941.13 2136.03 2213.63 2305.30 2344.64 2399.55 17 268.37 0.93 18 272.93 0.93 19 277.67 0.93 20 282.42 0.93 21 284.81 0.93 22 288.43 0.93 23 292.05 0.93 24 296.93 0.93 25 301.81 0.93 26 306.75 0.93 27 311.68 0.93 28 316.68 0.93 29 321.67 0.93 30 326.71 0.93 31 331.76 0.94 32 336.84 0.94 33 341.93 0.94 34 347.05 0.94 35 352.18 0.95 36 357.34 0.95 37 362.49 0.95 38 367.68 0.95 119.89 124.85 124.49 62.51 93.96 93.24 124.14 121.93 120.72 117.56 115.20 111.07 107.53 102.42 97.70 91.61 85.70 78.62 71.55 63.48 55.26 46.21 27.0 4.56 5.12 2 10.00 35.0 25.2 4.75 5.24 2 10.00 35.0 25.2 4.75 5.24 2 10.00 35.0 23.4 2.39 2.61 2 10.00 35.0 23.3 3.62 3.94 2 10.00 35.0 23.3 3.62 3.94 2 10.00 35.0 21.5 4.88 5.24 2 10.00 35.0 21.5 4.88 5.24 2 10.00 35.0 19.6 4.94 5.24 2 10.00 35.0 19.7 4.94 5.24 2 10.00 35.0 17.8 4.99 5.24 2 10.00 35.0 17.8 4.99 5.24 2 10.00 35.0 15.9 5.04 5.24 2 10.00 35.0 16.0 5.04 5.24 2 10.00 35.0 14.1 5.09 5.24 2 10.00 35.0 14.1 5.09 5.24 2 10.00 35.0 12.3 5.12 5.24 2 10.00 35.0 12.3 5.12 5.24 2 10.00 35.0 10.4 5.16 5.24 2 10.00 35.0 10.4 5.16 5.24 2 10.00 35.0 8.6 5.19 5.24 2 10.00 35.0 8.6 5.19 5.24 2 10.00 35.0 13315.89 14028.03 14151.05 7167.33 10805.80 10723.09 14275.95 14022.32 13883.11 13519.80 13247.49 12773.17 12366.07 11778.85 11235.39 10535.31 9855.39 9041.59 8227.71 7300.58 6354.59 5314.71 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 2424.11 2486.99 2508.91 2554.17 2545.50 2526.00 2526.74 2481.80 2458.96 2394.49 2350.46 2266.15 2200.16 2095.54 2006.56 1881.53 1768.75 1622.54 1485.32 1317.89 1155.24 966.03 39 0.96 40 0.96 41 0.97 42 2.50 372.87 378.07 383.28 388.51 36.87 26.86 16.45 5.48 6.7 5.21 5.24 2 10.00 35.0 4240.07 6.7 5.21 5.24 2 10.00 35.0 3089.24 4.9 5.23 5.24 2 10.00 35.0 1891.37 89.9 5.23 4525.97 2 10.00 35.0 630.50 X -S Area: 3241.10 Path Length: 4720.01 X -S Weight: 364005.59 0.00 0.00 0.00 0.00 777.01 565.94 349.63 -13.89 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS3-EQ-Mining.gmf Processed: 27 Feb 2024 12:40:48 DATA: Analysis 1 - Slope Stability - Case SS -3 Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4602.00 Profile: 2 (2 points) 0.00 4591.37 Profile: 3 (2 points) 228.50 4597.37 Profile: 4 (2 points) 231.50 4591.37 Profile: 5 (2 points) 0.00 4586.37 Profile: 6 (2 points) 231.50 4586.37 Profile: 7 (2 points) 0.00 4578.37 Profile: 8 (2 points) 231.50 4578.37 Profile: 9 (4 points) 0.00 4513.97 Profile: 10 (4 points) 231.50 4521.44 Profile: 11 (8 points) 0.00 4511.97 4519.44 393.74 4523.37 Slope Surface (14 points) 4599.65 4598.40 4597.74 0.00 4601.00 187.50 4597.37 245.00 700.00 4602.00 Material beneath: 2 - Sand and Gravel 228.50 4591.37 Material beneath: 5 - Slurry Wall 231.50 4597.37 Material beneath: 2 - Sand and Gravel 700.00 4591.37 Material beneath: 6 - Clay 228.50 4586.37 Material beneath: 6 - Clay 700.00 4586.37 Material beneath: 2 - Sand 228.50 4578.37 Material beneath: 2 - Sand 700.00 4578.37 Material beneath: 3 - Weathe 54.33 4514.03 Material beneath: 3 - Weathe • r J L J • and Gravel and Gravel red red Claystone Bedrock 89.95 4518.08 Claystone Bedrock 565.84 4528.32 Material beneath: 4 - Stable Claystone Bedrock 54.33 4512.03 89.95 4517.08 Phreatic Surface (4 points) 0.00 Failure Surface 4589.37 565.84 122.87 194.00 393.74 228.50 4526.32 4599.65 4597.80 4525.37 4589.37 700.00 4527.00 140.53 206.20 565.84 4599.55 4597.24 4528.32 231.50 4525.37 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 206.20 YL: 4597.24 XR: 393.47 YR: Centre: XC: 371.89 YC: 4749.46 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.063 228.50 700.00 228.50 147.19 228.50 700.00 4521.44 4529.00 4519.44 4601.00 4597.37 4529.00 393.74 4525.37 4525.50 225.00 231.50 177.60 231.50 Variable Restraints Parameter descriptor: XL Range of variation: 10.00 Trial positions within range: 20 S-. - - a- -a a -_ XR 10.00 20 a - R 200.00 50 SS SS _ _ - a - RESULTS: Analysis 1 - Slope Stability - Case SS -33 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: 1.647 Analysis Summary There were: 17413 successful analyses from a total of 20001 trial failure surfaces 2588 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.49 - - a a - - a - Negative normal stresses exist on the base of one or more slices; examine slice data and consult the GALENA Help utility Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 X -Left 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 211.20 Y -Left 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 X --Right 393.73 393.73 394.26 392.15 393.21 393.73 394.26 392.68 391.63 393.21 391.10 393.73 390.58 Y -Right 4525.37 4525.37 4525.38 4526.14 4525.63 4525.37 4525.38 4525.89 4526.40 4525.63 4526.65 4525.37 4526.91 X -Centre 416.02 414.45 415.96 415.13 415.72 412.87 414.40 415.42 414.83 414.15 414.53 411.30 414.23 Y -Centre 4849.61 4845.62 4849.65 4850.33 4849.85 4841.63 4845.67 4850.09 4850.57 4845.86 4850.81 4837.63 4851.05 Radius 325.00 320.92 325.00 325.00 325.00 316.84 320.92 325.00 325.00 320.92 325.00 312.76 325.00 FoS 1.491 1.493 1.493 1.493 1.494 1.494 1.494 1.495 1.495 1.495 1.495 1.496 1.496 <-- Critical 14 211.20 15 211.20 16 210.67 17 211.20 18 211.20 19 211.20 20 211.20 21 211.20 22 211.20 23 210.67 24 211.20 25 211.20 26 211.20 27 210.67 28 211.20 29 211.20 30 210.67 31 211.20 32 210.67 33 211.20 34 210.67 35 211.20 36 210.67 37 211.20 38 211.20 39 210.67 40 210.67 41 210.67 42 211.20 43 211.20 44 211.20 45 211.20 46 210.15 47 211.20 48 210.67 49 211.20 50 210.67 51 211.20 52 210.67 53 211.20 54 211.20 55 210.67 56 210.67 57 210.67 58 210.67 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 392.68 394.26 393.73 390.05 393.21 391.63 389.52 391.10 389.00 393.73 390.58 394.26 388.47 394.26 392.15 390.05 392.15 389.52 393.21 392.68 391.63 393.73 393.73 391.10 389.00 391.10 394.26 392.68 392.15 390.58 388.47 393.21 393.73 394.26 390.58 390.05 393.21 391.63 390.05 392.68 389.52 391.63 389.52 393.73 392.68 4525.89 4525.38 4525.37 4527.17 4525.63 4526.40 4527.42 4526.65 4527.68 4525.37 4526.91 4525.38 4527.93 4525.38 4526.14 4527.17 4526.14 4527.42 4525.63 4525.89 4526.40 4525.37 4525.37 4526.65 4527.68 4526.65 4525.38 4525.89 4526.14 4526.91 4527.93 4525.63 4525.37 4525.38 4526.91 4527.17 4525.63 4526.40 4527.17 4525.89 4527.42 4526.40 4527.42 4525.37 4525.89 413.86 412.83 415.44 413.93 412.58 413.26 413.63 412.97 413.33 413.87 412.67 411.26 413.03 415.38 413.56 412.37 414.55 412.07 415.14 412.29 414.25 409.72 412.30 411.40 411.77 413.95 413.82 414.84 411.99 411.11 411.47 411.01 414.86 409.68 413.65 410.81 413.58 411.70 413.35 410.72 410.51 412.69 413.05 410.73 413.28 4846.10 4841.67 4849.65 4851.29 4841.87 4846.59 4851.53 4846.83 4851.77 4845.66 4847.07 4837.67 4852.00 4849.69 4846.35 4847.31 4850.37 4847.55 4849.89 4842.12 4850.61 4833.63 4841.67 4842.84 4847.79 4850.85 4845.70 4850.13 4842.36 4843.08 4848.03 4837.88 4849.69 4833.67 4851.09 4843.32 4845.90 4842.60 4851.33 4838.12 4843.56 4846.62 4851.57 4837.67 4846.14 320.92 1.496 316.84 1.496 325.00 1.496 325.00 1.496 316.84 1.497 320.92 1.497 325.00 1.497 320.92 1.497 325.00 1.497 320.92 1.498 320.92 1.498 312.76 1.498 325.00 1.498 325.00 1.498 320.92 1.498 320.92 1.498 325.00 1.498 320.92 1.499 325.00 1.499 316.84 1.499 325.00 1.499 308.67 1.499 316.84 1.499 316.84 1.499 320.92 1.499 325.00 1.499 320.92 1.499 325.00 1.500 316.84 1.500 316.84 1.500 320.92 1.500 312.76 1.500 325.00 1.500 308.67 1.500 325.00 1.500 316.84 1.500 320.92 1.500 316.84 1.500 325.00 1.500 312.76 1.500 316.84 1.501 320.92 1.501 325.00 1.501 312.76 1.501 320.92 1.501 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 211.20 210.67 211.20 211.20 210.67 210.15 210.67 211.20 211.20 211.20 210.15 210.67 210.67 210.67 211.20 210.67 211.20 210.67 211.20 210.15 211.20 210.67 210.67 211.20 210.15 210.15 211.20 211.20 210.67 210.67 210.67 210.15 210.67 210.15 210.15 210.67 211.20 209.62 211.20 211.20 210.67 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 4597.27 4597.26 4597.26 4597.27 4597.27 4597.27 4597.27 4597.27 4597.26 4597.27 4597.26 4597.26 4597.27 4597.27 4597.26 4597.27 4597.27 4597.27 Critical Failure Surface (circle 1) Intersects: XL: 211.20 389.00 394.26 392.15 393.73 391.10 393.73 389.00 388.47 393.21 390.58 394.26 390.58 392.15 393.21 391.63 388.47 390.05 390.05 392.68 393.21 389.52 392.68 389.52 391.10 393.73 391.63 392.15 389.00 393.73 394.26 391.10 394.26 389.00 392.68 391.10 392.15 394.26 393.73 388.47 393.73 393.21 YL: 4527.68 4525.38 4526.14 4525.37 4526.65 4525.37 4527.68 4527.93 4525.63 4526.91 4525.38 4526.91 4526.14 4525.63 4526.40 4527.93 4527.17 4527.17 4525.89 4525.63 4527.42 4525.89 4527.42 4526.65 4525.37 4526.40 4526.14 4527.68 4525.37 4525.38 4526.65 4525.38 4527.68 4525.89 4526.65 4526.14 4525.38 4525.37 4527.93 4525.37 4525.63 4597.27 XR: 410.21 412.26 410.42 408.15 412.39 413.30 412.74 409.92 409.43 409.54 414.81 412.09 412.98 412.01 410.13 412.44 409.24 411.79 409.14 414.56 408.95 411.71 411.49 409.84 411.73 413.67 408.85 408.65 409.16 410.69 410.83 413.25 411.19 414.27 413.37 411.42 408.11 414.29 408.36 406.56 410.44 393.73 4843.80 4841.70 4838.36 4829.62 4846.87 4845.69 4851.81 4844.04 4833.88 4839.09 4849.73 4847.11 4846.38 4841.91 4838.61 4852.05 4839.33 4847.35 4834.12 4849.93 4839.57 4842.15 4847.59 4838.85 4841.70 4850.65 4834.36 4839.81 4833.66 4837.70 4842.88 4845.73 4847.83 4850.17 4850.89 4842.39 4829.66 4849.72 4840.06 4825.61 4837.91 YR: 316.84 316.84 312.76 304.59 320.92 320.92 325.00 316.84 308.67 312.76 325.00 320.92 320.92 316.84 312.76 325.00 312.76 320.92 308.67 325.00 312.76 316.84 320.92 312.76 316.84 325.00 308.67 312.76 308.67 312.76 316.84 320.92 320.92 325.00 325.00 316.84 304.59 325.00 312.76 300.51 312.76 4525.37 1.501 1.501 1.501 1.501 1.501 1.501 1.501 1.501 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.502 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 1.503 Centre: XC: 416.02 YC: Generated failure surface: (20 points) 211.20 4597.27 219.45 4573.00 254.40 4549.18 301.81 4533.17 352.18 4525.37 4567.64 4545.34 4530.94 263.59 311.68 362.49 4849.61 4590.79 4562.57 4541.81 4529.05 227.90 272.93 321.67 372.87 Radius: 4584.58 4557.80 4538.60 4527.49 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test Factor 1 1.02 2 1.02 3 0.93 4 0.92 5 0.92 6 1.01 7 1.00 8 0.83 9 1.00 10 0.91 11 0.91 12 0.91 13 0.91 14 0.91 X -Left 211.20 214.96 218.71 219.45 221.39 225.47 227.90 228.75 231.50 236.55 240.78 245.00 249.70 254.40 X -S Area 5.58 16.74 4.59 14.02 38.69 28.90 11.10 39.33 86.18 85.59 97.48 116.42 118.82 94.59 Angle 38.1 38.1 38.1 36.3 36.3 36.3 34.4 34.4 34.4 32.6 32.6 30.9 30.7 28.9 Width 3.76 3.76 0.74 1.94 4.09 2.43 0.85 2.75 5.05 4.22 4.22 4.70 4.70 3.69 Base Length Matl Cohesion Phi 4.78 6 50.00 25.0 4.78 6 50.00 25.0 0.94 2 10.00 35.0 2.40 2 10.00 35.0 5.07 2 10.00 35.0 3.02 6 50.00 25.0 1.03 6 50.00 25.0 3.33 5 0.00 45.0 6.13 6 50.00 25.0 5.01 2 10.00 35.0 5.01 2 10.00 35.0 5.48 2 10.00 35.0 5.47 2 10.00 35.0 4.21 2 10.00 35.0 325.00 236.55 282.42 331.76 383.28 Weight 558.16 1674.30 462.21 1439.71 4175.41 3214.57 1237.79 3933.06 8996.62 8943.28 10303.89 12456.03 12892.80 10385.14 4578.65 4553.34 4535.72 4526.26 PoreWater Force 0.00 0.00 0.00 0.00 474.41 733.07 325.98 0.00 0.00 0.00 0.00 0.00 0.00 0.00 245.39 292.05 341.93 393.73 Normal Stress 98.16 336.70 454.82 549.24 780.35 1100.16 1238.15 980.26 1447.14 1625.30 1872.99 2064.84 2140.22 2233.25 15 0.91 16 0.91 17 0.91 18 0.91 19 0.91 20 0.91 21 0.91 22 0.91 23 0.91 24 0.91 25 0.91 26 0.91 27 0.91 28 0.91 29 0.92 30 0.92 31 0.92 32 0.92 33 0.93 34 0.93 35 0.94 36 0.94 258.09 263.59 268.37 272.93 277.67 282.42 284.81 288.43 292.05 296.93 301.81 306.75 311.68 316.68 321.67 326.71 331.76 336.84 341.93 347.05 352.18 357.34 142.55 125.20 119.89 124.85 124.49 62.51 93.96 93.24 124.14 121.93 120.72 117.56 115.20 111.07 107.53 102.42 97.70 91.61 85.70 78.62 71.55 63.48 28.9 27.0 27.0 25.2 25.2 23.4 23.3 23.3 21.5 21.5 19.6 19.7 17.8 17.8 15.9 16.0 14.1 14.1 12.3 12.3 10.4 10.4 5.49 6.28 2 4.78 5.37 2 4.56 5.12 2 4.75 5.24 2 4.75 5.24 2 2.39 2.61 2 3.62 3.94 2 3.62 3.94 2 4.88 5.24 2 4.88 5.24 2 4.94 5.24 2 4.94 5.24 2 4.99 5.24 2 4.99 5.24 2 5.04 5.24 2 5.04 5.24 2 5.09 5.24 2 5.09 5.24 2 5.12 5.24 2 5.12 5.24 2 5.16 5.24 2 5.16 5.24 2 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 15734.28 13823.92 13315.89 14028.03 14151.05 7167.33 10805.80 10723.09 14275.95 14022.32 13883.11 13519.80 13247.49 12773.17 12366.07 11778.85 11235.39 10535.31 9855.39 9041.59 8227.71 7300.58 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 2271.37 2329.11 2352.96 2418.68 2440.02 2488.84 2480.40 2461.40 2466.88 2423.01 2405.38 2342.29 2303.71 2221.06 2160.62 2057.86 1974.38 1851.35 1743.85 1599.68 1467.36 1301.93 37 0.94 38 0.94 39 0.95 40 0.95 41 0.97 42 2.12 362.49 367.68 372.87 378.07 383.28 388.51 55.26 46.21 36.87 26.86 16.45 5.48 8.6 8.6 6.7 6.7 4.9 89.9 5.19 5.24 2 10.00 35.0 5.19 5.24 2 10.00 35.0 5.21 5.24 2 10.00 35.0 5.21 5.24 2 10.00 35.0 5.23 5.24 2 10.00 35.0 5.23 4525.97 2 10.00 35.0 X -S Area: 3241.10 Path Length: 4720.01 6354.59 5314.71 4240.07 3089.24 1891.37 630.50 X -S Weight: 364005.59 0.00 0.00 0.00 0.00 0.00 0.00 1143.60 956.27 770.76 561.36 347.53 -13.95 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS4-Mining.gmf Processed: 27 Feb 2024 08:21:10 DATA: Analysis 1 - Slope Stability - Case SS -4 Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Unsaturated: 50.00 25.0 100.00 Saturated: 50.00 25.0 115.00 Water Properties Unit weight of water: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay Ru Auto Auto Unit weight of water/medium above ground: 62.400 0.00 4600.00 Profile: 2 (2 points) 0.00 4589.51 Profile: 3 (2 points) 243.50 4595.51 Profile: 4 (2 points) 246.50 4589.51 Profile: 5 (2 points) 0.00 4583.51 Profile: 6 (2 points) 246.50 4583.51 Profile: 7 (2 points) 0.00 4574.51 Profile: 8 (2 points) 246.50 4574.51 Profile: 9 (3 points) 0.00 4525.20 Profile: 10 (5 points) 246.50 4528.29 4537.00 Profile: 11 (8 points) 0.00 4523.20 4526.40 392.67 4529.25 Slope Surface (12 points) 0.00 4597.05 4596.15 224.00 4595.66 4531.25 539.96 4535.35 700.00 4600.00 Material beneath: 2 - Sand and Gravel 243.50 4589.51 Material beneath: 5 - Slurry Wall 246.50 4595.51 Material beneath: 2 - Sand and Gravel 700.00 4589.51 Material beneath: 6 - Clay 243.50 4583.51 Material beneath: 6 - Clay 700.00 4583.51 Material beneath: 2 - Sand 243.50 4574.51 Material beneath: 2 - Sand 700.00 4574.51 Material beneath: 3 - Weathered 129.56 4527.98 Material beneath: 3 - Weathered 290.29 4528.40 and Gravel and Gravel Claystone Bedrock 243.50 4528.29 Claystone Bedrock 392.67 4531.25 Material beneath: 4 - Stable Claystone Bedrock Phreatic Surface (4 points) 0.00 4585.51 Failure Surface 129.56 4525.98 243.50 539.96 4533.35 157.98 243.50 700.00 4597.05 4595.51 4537.00 4526.29 700.00 4535.00 200.00 246.50 243.50 4585.51 246.50 4596.74 4595.51 4531.25 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 224.00 YL: 4595.66 XR: 392.67 YR: Centre: XC: 372.00 YC: 4730.18 Radius: R: Variable Restraints 539.96 4535.35 246.50 4526.29 206.26 4596.43 260.01 4595.61 392.67 4531.25 4531.25 200.00 700.00 290.29 210.00 392.67 Parameter descriptor: XL Range of variation: 10.00 Trial positions within range: 20 __ a -- XR 10.00 20 a a 1 _ R 150.00 50 RESULTS: Analysis 1 - Slope Stability - Case SS -4 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: 2.001 Analysis Summary There were: 17286 successful analyses from a total of 20001 trial failure surfaces 2715 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.77 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left 1 229.00 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 Y -Left 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 X -Right 392.93 392.41 391.88 391.35 390.83 390.30 389.78 392.93 392.41 389.25 391.88 388.72 391.35 388.20 390.83 387.67 390.30 389.78 Y -Right 4531.26 4531.38 4531.63 4531.89 4532.14 4532.40 4532.65 4531.26 4531.38 4532.91 4531.63 4533.17 4531.89 4533.42 4532.14 4533.68 4532.40 4532.65 X -Centre 406.18 406.06 405.77 405.48 405.19 404.90 404.60 405.00 404.88 404.31 404.59 404.02 404.30 403.72 404.01 403.43 403.72 403.43 Y -Centre 4805.94 4806.04 4806.28 4806.53 4806.77 4807.01 4807.25 4802.93 4803.03 4807.50 4803.27 4807.74 4803.52 4807.98 4803.76 4808.22 4804.01 4804.25 - - _ _ Radius 275.00 275.00 275.00 275.00 275.00 275.00 275.00 271.94 271.94 275.00 271.94 275.00 271.94 275.00 271.94 275.00 271.94 271.94 FoS 1.767 1.767 1.768 1.768 1.769 1.769 1.770 1.770 1.770 1.770 1.770 1.771 1.771 1.771 1.771 1.772 1.772 1.772 - _ <-- Critical 19 229.00 20 229.00 21 229.00 22 229.00 23 229.00 24 229.00 25 229.00 26 229.00 27 229.00 28 229.00 29 229.00 30 228.47 31 229.00 32 229.00 33 228.47 34 229.00 35 229.00 36 229.00 37 228.47 38 229.00 39 229.00 40 228.47 41 229.00 42 229.00 43 229.00 44 228.47 45 229.00 46 228.47 47 228.47 48 229.00 49 228.47 50 229.00 51 229.00 52 228.47 53 229.00 54 229.00 55 228.47 56 229.00 57 228.47 58 229.00 59 228.47 60 229.00 61 228.47 62 229.00 63 228.47 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.63 4595.62 4595.62 4595.63 4595.62 4595.62 4595.62 4595.63 4595.62 4595.62 4595.63 4595.62 4595.62 4595.62 4595.63 4595.62 4595.63 4595.63 4595.62 4595.63 4595.62 4595.62 4595.63 4595.62 4595.62 4595.63 4595.62 4595.63 4595.62 4595.63 4595.62 4595.63 4595.62 4595.63 392.93 392.41 389.25 391.88 388.72 391.35 388.20 390.83 387.67 390.30 389.78 392.93 392.93 389.25 392.41 392.41 391.88 388.72 391.88 391.35 388.20 391.35 390.83 387.67 390.30 390.83 389.78 392.93 390.30 389.25 392.41 392.93 392.41 389.78 388.72 391.88 391.88 391.35 389.25 388.20 391.35 390.83 388.72 387.67 390.83 4531.26 4531.38 4532.91 4531.63 4533.17 4531.89 4533.42 4532.14 4533.68 4532.40 4532.65 4531.26 4531.26 4532.91 4531.38 4531.38 4531.63 4533.17 4531.63 4531.89 4533.42 4531.89 4532.14 4533.68 4532.40 4532.14 4532.65 4531.26 4532.40 4532.91 4531.38 4531.26 4531.38 4532.65 4533.17 4531.63 4531.63 4531.89 4532.91 4533.42 4531.89 4532.14 4533.17 4533.68 4532.14 403.81 403.69 403.14 403.40 402.84 403.12 402.55 402.83 402.26 402.54 402.25 405.62 402.63 401.96 405.50 402.51 402.22 401.67 405.21 401.93 401.38 404.92 401.65 401.08 401.36 404.63 401.07 404.45 404.34 400.78 404.33 401.44 401.32 404.05 400.49 401.03 404.04 400.75 403.75 400.20 403.75 400.46 403.46 399.91 403.46 4799.91 4800.02 4804.49 4800.26 4804.74 4800.51 4804.98 4800.75 4805.22 4801.00 4801.24 4805.96 4796.90 4801.49 4806.07 4797.00 4797.25 4801.73 4806.31 4797.49 4801.97 4806.55 4797.74 4802.22 4797.99 4806.80 4798.23 4802.95 4807.04 4798.48 4803.05 4793.87 4793.98 4807.28 4798.72 4794.23 4803.30 4794.48 4807.53 4798.97 4803.54 4794.72 4807.77 4799.21 4803.79 268.88 1.772 268.88 1.773 271.94 1.773 268.88 1.773 271.94 1.773 268.88 1.774 271.94 1.774 268.88 1.774 271.94 1.774 268.88 1.774 268.88 1.775 275.00 1.775 265.82 1.775 268.88 1.775 275.00 1.775 265.82 1.775 265.82 1.776 268.88 1.776 275.00 1.776 265.82 1.776 268.88 1.776 275.00 1.777 265.82 1.777 268.88 1.777 265.82 1.777 275.00 1.777 265.82 1.778 271.94 1.778 275.00 1.778 265.82 1.778 271.94 1.778 262.76 1.778 262.76 1.778 275.00 1.778 265.82 1.779 262.76 1.779 271.94 1.779 262.76 1.779 275.00 1.779 265.82 1.779 271.94 1.779 262.76 1.779 275.00 1.780 265.82 1.780 271.94 1.780 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 229.00 228.47 229.00 228.47 228.47 228.47 229.00 229.00 228.47 228.47 229.00 227.95 228.47 229.00 229.00 228.47 229.00 227.95 228.47 229.00 229.00 228.47 227.95 228.47 229.00 229.00 228.47 227.95 228.47 229.00 228.47 227.95 228.47 228.47 228.47 227.95 4595.62 4595.63 4595.62 4595.63 4595.63 4595.63 4595.62 4595.62 4595.63 4595.63 4595.62 4595.63 4595.63 4595.62 4595.62 4595.63 4595.62 4595.63 4595.63 4595.62 4595.62 4595.63 4595.63 4595.63 4595.62 4595.62 4595.63 4595.63 4595.63 4595.62 4595.63 4595.63 4595.63 4595.63 4595.63 4595.63 Critical Failure Surface (circle 1) Intersects: Centre: XL: XC: 229.00 406.18 390.30 388.20 389.78 390.30 392.93 392.41 389.25 392.93 387.67 389.78 392.41 392.93 391.88 388.72 391.88 389.25 391.35 392.41 391.35 388.20 390.83 388.72 391.88 390.83 387.67 390.30 388.20 391.35 390.30 389.78 392.93 390.83 387.67 392.41 389.78 392.93 YL: YC: Generated failure surface: (20 points) 229.00 4595.62 236.32 4573.36 4532.40 4533.42 4532.65 4532.40 4531.26 4531.38 4532.91 4531.26 4533.68 4532.65 4531.38 4531.26 4531.63 4533.17 4531.63 4532.91 4531.89 4531.38 4531.89 4533.42 4532.14 4533.17 4531.63 4532.14 4533.68 4532.40 4533.42 4531.89 4532.40 4532.65 4531.26 4532.14 4533.68 4531.38 4532.65 4531.26 4595.62 4805.94 4589.67 XR: 400.18 403.16 399.89 403.16 403.27 403.14 399.60 400.25 402.87 402.87 400.13 405.07 402.86 399.31 399.85 402.58 399.56 404.95 402.57 399.02 399.28 402.29 404.66 402.28 398.73 398.99 401.99 404.37 401.99 398.71 402.08 404.08 401.70 401.96 401.70 403.90 4794.97 4808.01 4795.21 4804.03 4799.94 4800.04 4795.46 4790.85 4808.26 4804.28 4790.96 4805.99 4800.29 4795.71 4791.20 4804.52 4791.45 4806.09 4800.53 4795.95 4791.70 4804.77 4806.34 4800.78 4796.20 4791.95 4805.01 4806.58 4801.02 4792.19 4796.92 4806.82 4805.25 4797.02 4801.27 4802.98 392.93 YR: Radius: R: 243.84 4583.97 262.76 275.00 262.76 271.94 268.88 268.88 262.76 259.69 275.00 271.94 259.69 275.00 268.88 262.76 259.69 271.94 259.69 275.00 268.88 262.76 259.69 271.94 275.00 268.88 262.76 259.69 271.94 275.00 268.88 259.69 265.82 275.00 271.94 265.82 268.88 271.94 4531.26 275.00 1.780 1.780 1.780 1.780 1.781 1.781 1.781 1.781 1.781 1.781 1.781 1.781 1.781 1.781 1.782 1.782 1.782 1.782 1.782 1.782 1.782 1.782 1.782 1.783 1.783 1.783 1.783 1.783 1.783 1.783 1.783 1.784 1.784 1.784 1.784 1.784 251.55 4578.53 259.44 267.50 4551.72 310.08 4537.55 355.48 4531.26 4568.46 4548.27 4535.65 275.73 318.98 364.78 4563.84 4545.13 4534.07 284.11 327.97 374.13 4559.51 4542.29 4532.81 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test Factor 1 1.06 2 1.06 3 0.96 4 0.97 5 0.96 6 0.87 7 1.03 8 1.02 9 1.02 10 0.95 11 0.94 12 0.94 13 0.94 14 0.94 15 0.93 16 0.93 X -Left 229.00 232.66 236.32 239.06 241.80 243.50 246.50 251.55 254.62 257.68 259.44 263.47 267.50 272.58 275.73 279.92 X -S Area 5.39 16.19 19.00 24.64 18.06 37.09 76.82 55.32 61.56 38.06 91.83 93.82 120.40 75.63 101.43 101.99 Base Angle Width Length Matl 39.1 3.66 4.72 39.1 3.66 4.72 37.2 2.74 3.44 37.2 2.74 3.44 37.2 1.70 2.13 35.4 3.00 3.68 35.2 5.05 6.18 33.2 3.07 3.67 33.2 3.07 3.67 33.2 1.76 2.10 31.3 4.03 4.72 31.3 4.03 4.72 29.3 5.08 5.82 29.3 3.15 3.61 27.3 4.19 4.72 27.3 4.19 4.72 Cohesion Phi 6 50.00 25.0 6 50.00 25.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 5 0.00 45.0 6 50.00 25.0 6 50.00 25.0 6 50.00 25.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 2 10.00 35.0 292.64 337.06 383.52 Weight 539.45 1618.72 1935.86 2585.51 1940.88 3708.54 8136.70 5808.39 6431.81 3979.03 9689.61 10036.38 13066.21 8272.71 11098.89 11162.98 4555.47 4539.76 4531.87 PoreWater Force 0.00 0.00 0.00 0.00 85.41 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 301.30 346.24 392.93 Normal Stress 102.41 345.22 539.57 721.71 885.94 881.37 1342.13 1598.54 1771.81 1795.34 1934.15 2003.55 2102.06 2146.62 2195.82 2208.50 17 0.93 18 0.93 19 0.93 20 0.93 21 0.93 22 0.93 23 0.93 24 0.93 25 0.93 26 0.93 27 0.93 28 0.93 29 0.93 30 0.93 31 0.94 32 0.94 33 0.94 34 0.94 35 0.95 36 0.95 37 0.96 38 0.96 284.11 284.95 288.80 292.64 296.97 301.30 303.50 306.79 310.08 314.53 318.98 323.48 327.97 332.52 337.06 341.65 346.24 350.86 355.48 360.13 364.78 369.45 20.42 25.4 0.84 0.93 2 10.00 35.0 93.69 25.4 3.84 4.25 2 10.00 35.0 93.53 25.4 3.84 4.25 2 10.00 35.0 104.76 23.4 4.33 4.72 2 10.00 35.0 103.77 23.4 4.33 4.72 2 10.00 35.0 52.35 21.4 2.20 2.37 2 10.00 35.0 77.30 21.4 3.29 3.53 2 10.00 35.0 76.30 21.4 3.29 3.53 2 10.00 35.0 101.19 19.5 4.45 4.72 2 10.00 35.0 98.59 19.5 4.45 4.72 2 10.00 35.0 96.69 17.5 4.50 4.72 2 10.00 35.0 93.25 17.5 4.50 4.72 2 10.00 35.0 90.33 15.5 4.55 4.72 2 10.00 35.0 86.05 15.5 4.55 4.72 2 10.00 35.0 82.10 13.6 4.59 4.72 2 10.00 35.0 76.97 13.6 4.59 4.72 2 10.00 35.0 72.00 11.6 4.62 4.72 2 10.00 35.0 66.03 11.6 4.62 4.72 2 10.00 35.0 60.04 9.6 4.65 4.72 2 10.00 35.0 53.22 9.6 4.65 4.72 2 10.00 35.0 46.24 7.7 4.68 4.72 2 10.00 35.0 38.58 7.7 4.68 4.72 2 10.00 35.0 2234.84 10309.61 10398.57 11772.94 11796.39 6002.06 8889.52 8774.44 11636.61 11337.41 11119.11 10723.99 10388.15 9896.02 9441.78 8852.11 8279.86 7592.96 6904.14 6119.85 5317.48 4436.94 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 2245.96 2255.43 2274.91 2319.18 2323.70 2355.12 2336.88 2306.48 2293.04 2234.12 2195.32 2117.25 2057.36 1959.84 1877.89 1760.60 1655.84 1518.39 1389.98 1231.99 1078.96 900.21 39 0.97 40 0.97 41 0.98 42 0.98 374.13 378.82 383.52 388.09 30.65 22.16 13.07 4.26 X -S Area: 2690.75 5.7 5.7 3.7 3.7 4.69 4.69 4.58 4.84 4.72 2 10.00 35.0 3524.39 4.72 2 10.00 35.0 2548.35 4.59 2 10.00 35.0 1503.11 4.85 2 10.00 35.0 489.91 Path Length: 179.26 X -S Weight: 300302.19 0.00 0.00 0.00 0.00 721.66 521.65 319.83 98.33 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS4-EQ--Mining.gmf Processed: 27 Feb 2024 12:45:51 DATA: Analysis 1 - Slope Stability - Case SS -4 Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4600.00 Profile: 2 (2 points) 0.00 4589.51 Profile: 3 (2 points) 243.50 4595.51 Profile: 4 (2 points) 246.50 4589.51 Profile: 5 (2 points) 0.00 4583.51 Profile: 6 (2 points) 246.50 4583.51 Profile: 7 (2 points) 0.00 4574.51 Profile: 8 (2 points) 246.50 4574.51 Profile: 9 (3 points) 0.00 4525.20 Profile: 10 (5 points) 246.50 4528.29 4537.00 Profile: 11 (8 points) 0.00 4523.20 4526.40 392.67 4529.25 Slope Surface (12 points) 0.00 4597.05 4596.15 224.00 4595.66 4531.25 539.96 4535.35 700.00 4600.00 Material beneath: 2 - Sand and Gravel 243.50 4589.51 Material beneath: 5 - Slurry Wall 246.50 4595.51 Material beneath: 2 - Sand and Gravel 700.00 4589.51 Material beneath: 6 - Clay 243.50 4583.51 Material beneath: 6 - Clay 700.00 4583.51 Material beneath: 2 - Sand and Gravel 243.50 4574.51 Material beneath: 2 - Sand and Gravel 700.00 4574.51 Material beneath: 3 - Weathered Claystone Bedrock 129.56 4527.98 243.50 4528.29 Material beneath: 3 - Weathered Claystone Bedrock 290.29 4528.40 392.67 4531.25 Material beneath: 4 - Stable Claystone Bedrock 129.56 4525.98 243.50 4526.29 Phreatic Surface (4 points) 0.00 4585.51 Failure Surface 539.96 4533.35 157.98 243.50 700.00 4597.05 4595.51 4537.00 243.50 4585.51 700.00 4535.00 200.00 4596.74 246.50 4595.51 246.50 4531.25 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 224.00 YL: 4595.66 XR: 392.67 YR: Centre: XC: 372.00 YC: 4730.18 Radius: R: Earthquake Force 539.96 4535.35 246.50 4526.29 206.26 4596.43 260.01 4595.61 392.67 4531.25 4531.25 200.00 700.00 290.29 210.00 392.67 Pseudo -static earthquake (seismic) coefficient: 0.063 Variable Restraints Parameter descriptor: XL Range of variation: 10.00 Trial positions within range: 20 -- a w s - - -s - - XR 10.00 20 R 150.00 50 RESULTS: Analysis 1 - Slope Stability - Case 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: 1.702 Analysis Summary There were: 17286 successful analyses from a total of 20001 trial failure surfaces 2715 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.50 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left 1 229.00 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 Y -Left 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 X -Right 392.93 392.41 391.88 391.35 390.83 390.30 389.78 389.25 388.72 388.20 392.93 387.67 392.41 391.88 Y -Right 4531.26 4531.38 4531.63 4531.89 4532.14 4532.40 4532.65 4532.91 4533.17 4533.42 4531.26 4533.68 4531.38 4531.63 X -Centre 406.18 406.06 405.77 405.48 405.19 404.90 404.60 404.31 404.02 403.72 405.00 403.43 404.88 404.59 Y -Centre 4805.94 4806.04 4806.28 4806.53 4806.77 4807.01 4807.25 4807.50 4807.74 4807.98 4802.93 4808.22 4803.03 4803.27 s - Radius 275.00 275.00 275.00 275.00 275.00 275.00 275.00 275.00 275.00 275.00 271.94 275.00 271.94 271.94 FoS 1.501 1.501 1.501 1.501 1.501 1.502 1.502 1.502 1.502 1.503 1.503 1.503 1.503 1.503 <-- Critical 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 229.00 228.47 228.47 229.00 228.47 229.00 228.47 229.00 229.00 229.00 229.00 228.47 229.00 228.47 229.00 229.00 228.47 229.00 228.47 229.00 228.47 228.47 229.00 228.47 228.47 229.00 228.47 228.47 229.00 229.00 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.62 4595.63 4595.63 4595.62 4595.63 4595.62 4595.63 4595.62 4595.62 4595.62 4595.62 4595.63 4595.62 4595.63 4595.62 4595.62 4595.63 4595.62 4595.63 4595.62 4595.63 4595.63 4595.62 4595.63 4595.63 4595.62 4595.63 4595.63 4595.62 4595.62 391.35 390.83 390.30 389.78 389.25 388.72 388.20 392.93 387.67 392.41 391.88 391.35 390.83 390.30 389.78 389.25 392.93 392.41 388.72 391.88 388.20 391.35 387.67 392.93 392.41 391.88 390.83 391.35 390.30 390.83 390.30 389.78 389.78 392.93 389.25 389.25 392.41 388.72 388.72 391.88 388.20 388.20 391.35 387.67 392.93 4531.89 4532.14 4532.40 4532.65 4532.91 4533.17 4533.42 4531.26 4533.68 4531.38 4531.63 4531.89 4532.14 4532.40 4532.65 4532.91 4531.26 4531.38 4533.17 4531.63 4533.42 4531.89 4533.68 4531.26 4531.38 4531.63 4532.14 4531.89 4532.40 4532.14 4532.40 4532.65 4532.65 4531.26 4532.91 4532.91 4531.38 4533.17 4533.17 4531.63 4533.42 4533.42 4531.89 4533.68 4531.26 404.30 404.01 403.72 403.43 403.14 402.84 402.55 403.81 402.26 403.69 403.40 403.12 402.83 402.54 402.25 401.96 405.62 405.50 401.67 405.21 401.38 404.92 401.08 402.63 402.51 402.22 404.63 401.93 404.34 401.65 401.36 404.05 401.07 404.45 400.78 403.75 404.33 400.49 403.46 404.04 400.20 403.16 403.75 399.91 401.44 4803.52 4803.76 4804.01 4804.25 4804.49 4804.74 4804.98 4799.91 4805.22 4800.02 4800.26 4800.51 4800.75 4801.00 4801.24 4801.49 4805.96 4806.07 4801.73 4806.31 4801.97 4806.55 4802.22 4796.90 4797.00 4797.25 4806.80 4797.49 4807.04 4797.74 4797.99 4807.28 4798.23 4802.95 4798.48 4807.53 4803.05 4798.72 4807.77 4803.30 4798.97 4808.01 4803.54 4799.21 4793.87 271.94 271.94 271.94 271.94 271.94 271.94 271.94 268.88 271.94 268.88 268.88 268.88 268.88 268.88 268.88 268.88 275.00 275.00 268.88 275.00 268.88 275.00 268.88 265.82 265.82 265.82 275.00 265.82 275.00 265.82 265.82 275.00 265.82 271.94 265.82 275.00 271.94 265.82 275.00 271.94 265.82 275.00 271.94 265.82 262.76 1.503 1.504 1.504 1.504 1.504 1.505 1.505 1.505 1.505 1.505 1.506 1.506 1.506 1.506 1.506 1.507 1.507 1.507 1.507 1.507 1.507 1.508 1.508 1.508 1.508 1.508 1.508 1.508 1.508 1.508 1.509 1.509 1.509 1.509 1.509 1.509 1.509 1.509 1.510 1.510 1.510 1.510 1.510 1.510 1.510 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 229.00 228.47 228.47 229.00 229.00 228.47 229.00 229.00 228.47 229.00 228.47 228.47 227.95 229.00 228.47 228.47 229.00 227.95 228.47 228.47 229.00 227.95 228.47 228.47 227.95 229.00 228.47 229.00 229.00 227.95 229.00 228.47 228.47 227.95 229.00 229.00 228.47 227.95 229.00 227.95 4595.62 4595.63 4595.63 4595.62 4595.62 4595.63 4595.62 4595.62 4595.63 4595.62 4595.63 4595.63 4595.63 4595.62 4595.63 4595.63 4595.62 4595.63 4595.63 4595.63 4595.62 4595.63 4595.63 4595.63 4595.63 4595.62 4595.63 4595.62 4595.62 4595.63 4595.62 4595.63 4595.63 4595.63 4595.62 4595.62 4595.63 4595.63 4595.62 4595.63 Critical Failure Surface (circle 1) Intersects: XL: Centre: XC: 229.00 406.18 392.41 387.67 390.83 391.88 391.35 390.30 390.83 390.30 389.78 389.78 389.25 392.93 392.93 389.25 392.41 388.72 388.72 392.41 391.88 388.20 388.20 391.88 391.35 387.67 391.35 387.67 390.83 392.93 392.41 390.83 391.88 387.67 390.30 390.30 391.35 390.83 389.78 389.78 390.30 392.93 YL: YC: 4531.38 4533.68 4532.14 4531.63 4531.89 4532.40 4532.14 4532.40 4532.65 4532.65 4532.91 4531.26 4531.26 4532.91 4531.38 4533.17 4533.17 4531.38 4531.63 4533.42 4533.42 4531.63 4531.89 4533.68 4531.89 4533.68 4532.14 4531.26 4531.38 4532.14 4531.63 4533.68 4532.40 4532.40 4531.89 4532.14 4532.65 4532.65 4532.40 4531.26 4595.62 4805.94 XR: 401.32 402.87 403.46 401.03 400.75 403.16 400.46 400.18 402.87 399.89 402.58 403.27 405.07 399.60 403.14 402.29 399.31 404.95 402.86 401.99 399.02 404.66 402.57 401.70 404.37 398.73 402.28 400.25 400.13 404.08 399.85 400.53 401.99 403.78 399.56 399.28 401.70 403.49 398.99 403.90 4793.98 4808.26 4803.79 4794.23 4794.48 4804.03 4794.72 4794.97 4804.28 4795.21 4804.52 4799.94 4805.99 4795.46 4800.04 4804.77 4795.71 4806.09 4800.29 4805.01 4795.95 4806.34 4800.53 4805.25 4806.58 4796.20 4800.78 4790.85 4790.96 4806.82 4791.20 4802.25 4801.02 4807.07 4791.45 4791.70 4801.27 4807.31 4791.95 4802.98 392.93 YR: Radius: R: 262.76 275.00 271.94 262.76 262.76 271.94 262.76 262.76 271.94 262.76 271.94 268.88 275.00 262.76 268.88 271.94 262.76 275.00 268.88 271.94 262.76 275.00 268.88 271.94 275.00 262.76 268.88 259.69 259.69 275.00 259.69 268.88 268.88 275.00 259.69 259.69 268.88 275.00 259.69 271.94 4531.26 275.00 1.510 1.510 1.510 1.510 1.511 1.511 1.511 1.511 1.511 1.511 1.511 1.512 1.512 1.512 1.512 1.512 1.512 1.512 1.512 1.512 1.512 1.512 1.512 1.513 1.513 1.513 1.513 1.513 1.513 1.513 1.513 1.513 1.513 1.513 1.513 1.513 1.514 1.514 1.514 1.514 Generated failure surface: 229.00 4595.62 4573.36 267.50 4568.46 4551.72 310.08 4548.27 4537.55 355.48 4535,65 4531.26 (20 points) 236.32 275.73 318.98 364.78 4589.67 4563.84 4545.13 4534.07 243.84 284.11 327.97 374.13 4583.97 4559.51 4542.29 4532.81 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test X -Left Factor 1 229.00 1.03 2 232.66 1.03 3 236.32 0.93 4 239.06 0.93 5 241.80 0.93 6 243.50 0.83 7 246.50 1.00 8 251.55 0.99 9 254.62 0.99 10 257.68 0.92 11 259.44 0.91 12 263.47 0.91 13 267.50 0.91 14 272.58 0.91 X -S Area Angle 5.39 39.1 16.19 39.1 19.00 37.2 24.64 37.2 18.06 37.2 37.09 35.4 76.82 35.2 55.32 33.2 61.56 33.2 38.06 33.2 91.83 31.3 93.82 31.3 120.40 29.3 75.63 29.3 Width 3.66 3.66 2.74 2.74 1.70 3.00 5.05 3.07 3.07 1.76 4.03 4.03 5.08 3.15 Base Length Matl Cohesion Phi 4.72 6 50.00 25.0 4.72 6 50.00 25.0 3.44 2 10.00 35.0 3.44 2 10.00 35.0 2.13 2 10.00 35.0 3.68 5 0.00 45.0 6.18 6 50.00 25.0 3.67 6 50.00 25.0 3.67 6 50.00 25.0 2.10 2 10.00 35.0 4.72 2 10.00 35.0 4.72 2 10.00 35.0 5.82 2 10.00 35.0 3.61 2 10.00 35.0 251.55 292.64 337.06 383.52 Weight 539.45 1618.72 1935.86 2585.51 1940.88 3708.54 8136.70 5808.39 6431.81 3979.03 9689.61 1003 6.38 13066.21 8272.71 4578.53 4555.47 4539.76 4531.87 PoreWater Force 0.00 0.00 0.00 0.00 85.41 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 259.44 301.30 346.24 392.93 Normal Stress 96.03 331.44 517.74 692.69 852.03 838.60 1302.82 1555.01 1723.86 1731.42 1869.24 1936.34 2035.80 2078.97 15 0.91 16 0.91 17 0.91 18 0.91 19 0.91 20 0.91 21 0.91 22 0.91 23 0.91 24 0.91 25 0.91 26 0.91 27 0.91 28 0.91 29 0.92 30 0.92 31 0.92 32 0.92 33 0.93 34 0.93 35 0.94 36 0.94 275.73 279.92 284.11 284.95 288.80 292.64 296.97 301.30 303.50 306.79 310.08 314.53 318.98 323.48 327.97 332.52 337.06 341.65 346.24 350.86 355.48 360.13 101.43 27.3 4.19 4.72 2 101.99 27.3 4.19 4.72 2 20.42 25.4 0.84 0.93 2 93.69 25,4 3.84 4.25 2 93.53 25.4 3.84 4.25 2 104.76 23.4 4.33 4.72 2 103.77 23.4 4.33 4.72 2 52.35 21.4 2.20 2.37 2 77.30 21.4 3.29 3.53 2 76.30 21.4 3.29 3.53 2 101.19 19.5 4.45 4.72 2 98.59 19.5 4.45 4.72 2 96.69 17.5 4.50 4.72 2 93.25 17.5 4.50 4.72 2 90.33 15.5 4.55 4.72 2 86.05 15.5 4.55 4.72 2 82.10 13.6 4.59 4.72 2 76.97 13.6 4.59 4.72 2 72.00 11.6 4.62 4.72 2 66.03 11.6 4.62 4.72 2 60.04 9.6 4.65 4.72 2 53.22 9.6 4.65 4.72 2 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 11098.89 11162.98 2234.84 10309.61 10398.57 11772.94 11796.39 6002.06 8889.52 8774.44 11636.61 11337.41 11119.11 10723.99 10388.15 9896.02 9441.78 8852.11 8279.86 7592.96 6904.14 6119.85 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 2131.02 2143.33 2184.15 2193.39 2212.34 2260.03 2264.43 2299.77 2281.97 2252.27 2243.73 2186.09 2152.55 2075.99 2021.46 1925.63 1848.98 1733.49 1633.80 1498.16 1374.42 1218.18 37 0.95 38 0.95 39 0.96 40 0.96 41 0.97 42 0.97 364.78 369.45 374.13 378.82 383.52 388.09 X -S Area: 46.24 38.58 30.65 22.16 13.07 4.26 2690.75 7.7 7.7 5.7 5.7 3.7 3.7 4.68 4.68 4.69 4.69 4.58 4.84 4.72 4.72 4.72 4.72 4.59 4.85 Path Length: 179.26 2 2 2 2 2 2 10.00 10.00 10.00 10.00 10.00 10.00 35.0 35.0 35.0 35.0 35.0 35.0 5317.48 4436.94 3524.39 2548.35 1503.11 489.91 X -S Weight: 300302.19 0.00 0.00 0.00 0.00 0.00 0.00 1069.20 892.05 716.72 518.05 318.34 97.82 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS5-Mining.gmf Processed: 27 Feb 2024 08:29:18 DATA: Analysis 1 - Slope Stability - Case SS -5 Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) ---_--- - Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4611.00 Profile: 2 (2 points) 0.00 4596.10 Profile: 3 (2 points) 218.80 4603.10 Profile: 4 (2 points) 221.50 4596.10 Profile: 5 (2 points) 0.00 4577.10 Profile: 6 (2 points) 221.50 4577.10 Profile: 7 (2 points) 0.00 4574.10 Profile: 8 (2 points) 221.50 4574.10 Profile: 9 (3 points) 0.00 4549.18 Profile: 10 (4 points) 221.50 4549.15 Profile: 11 (7 points) 0.00 4547.18 4546.81 489.45 4546.17 Slope Surface (13 points) 4606.96 4604.59 4548.81 0.00 4604.65 197.50 4602.94 347.45 and Gravel and Gravel 347.46 4548.81 489.45 Material beneath: 4 - Stable Claystone Bedrock 73.68 4547.18 218.50 4547.15 700.00 4611.00 Material beneath: 2 - Sand and Gravel 218.50 4596.10 Material beneath: 5 - Slurry Wall 221.50 4603.10 Material beneath: 2 - Sand and Gravel 700.00 4596.10 Material beneath: 6 - Clay 218.50 4577.10 Material beneath: 6 - Clay 700.00 4577.10 Material beneath: 2 - Sand 218.50 4574.10 Material beneath: 2 - Sand 700.00 4574.10 Material beneath: 3 - Weathered Claystone Bedrock 73.68 4549.18 218.50 4549.15 Material beneath: 3 - Weathered Claystone Bedrock 4548.17 Phreatic Surface (4 points) 0.00 Failure Surface 4591.10 700.00 4545.00 93.40 200.00 489.45 4606.96 4604.51 4548.17 218.50 4591.10 120.00 218.50 700.00 4606.88 4603.10 4547.00 221.50 4549.15 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 172.62 YL: 4607.15 XR: 347.46 YR: Centre: XC: 333.59 YC: 4798.43 Radius: R: Variable Restraints Parameter descriptor: XL XR R 700.00 4547.00 221.50 4547.15 147.50 4609.84 221.50 4603.10 700.00 4547.00 4548.81 250.00 347.46 195.90 235.07 Range of variation: 10.00 10.00 200.00 Trial positions within range: 20 20 50 - S - - a - - - SP a -a a - RESULTS: Analysis 1 - Slope Stability - Case 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: 2.236 Analysis Summary a - There were: 17156 successful analyses from a total of 20001 trial failure surfaces 2845 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.95 Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 X -Left 177.62 176.57 174.99 172.36 173.94 177.09 175.51 176.04 177.62 169.73 174.46 177.62 174.99 172.88 171.83 176.04 173.41 176.57 175.51 Y -Left 4606.61 4606.72 4606.89 4607.17 4607.01 4606.67 4606.84 4606.78 4606.61 4607.46 4606.95 4606.61 4606.89 4607.12 4607.23 4606.78 4607.06 4606.72 4606.84 X -Right 342.46 342.99 342.46 342.46 342.99 342.99 342.46 343.51 344.04 342.46 342.99 342.99 344.04 342.46 342.99 342.46 343.51 343.51 344.04 Y -Right 4551.21 4550.96 4551.21 4551.21 4550.96 4550.96 4551.21 4550.71 4550.45 4551.21 4550.96 4550.96 4550.45 4551.21 4550.96 4551.21 4550.71 4550.71 4550.45 X -Centre 305.21 306.19 304.72 304.21 305.68 306.59 305.12 307.56 309.04 303.69 306.08 306.99 308.52 304.61 305.56 305.52 307.04 307.96 308.92 Y -Centre 4713.31 4717.35 4717.39 4721.46 4721.42 4717.44 4717.48 4721.45 4721.40 4725.53 4721.50 4717.52 4725.46 4721.55 4725.57 4717.57 4725.51 4721.54 4725.54 - - Radius 166.33 170.41 170.41 174.49 174.49 170.41 170.41 174.49 174.49 178.57 174.49 170.41 178.57 174.49 178.57 170.41 178.57 174.49 178.57 FoS 1.952 1.954 1.958 1.961 1.961 1.964 1.965 1.965 1.966 1.968 1.969 1.970 1.970 1.971 1.972 1.973 1.973 1.974 1.974 s - - a <-- Critical 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 177.09 170.25 174.99 176.57 170.78 177.09 173.41 169.20 173.94 171.30 177.09 167.62 172.36 172.88 174.46 175.51 171.30 177.62 170.78 176.04 174.99 176.04 173.94 170.25 174.46 169.73 177.09 177.62 176.57 172.88 168.15 168.67 173.41 176.57 171.30 170.78 171.83 174.99 173.94 174.46 172.36 175.51 177.09 177.62 174.46 4606.67 4607.40 4606.89 4606.72 4607.34 4606.67 4607.06 4607.51 4607.01 4607.29 4606.67 4607.68 4607.17 4607.12 4606.95 4606.84 4607.29 4606.61 4607.34 4606.78 4606.89 4606.78 4607.01 4607.40 4606.95 4607.46 4606.67 4606.61 4606.72 4607.12 4607.63 4607.57 4607.06 4606.72 4607.29 4607.34 4607.23 4606.89 4607.01 4606.95 4607.17 4606.84 4606.67 4606.61 4606.95 342.46 342.46 342.99 342.46 343.51 344.57 342.46 342.99 343.51 342.99 343.51 342.46 342.99 344.04 344.57 342.99 343.51 344.57 342.46 344.04 344.57 342.99 342.46 344.04 343.51 342.99 342.46 343.51 345.09 342.99 342.46 343.51 344.04 344.04 342.46 344.04 343.51 343.51 345.09 342.46 344.57 344.57 345.09 342.46 342.46 4551.21 4551.21 4550.96 4551.21 4550.71 4550.20 4551.21 4550.96 4550.71 4550.96 4550.71 4551.21 4550.96 4550.45 4550.20 4550.96 4550.71 4550.20 4551.21 4550.45 4550.20 4550.96 4551.21 4550.45 4550.71 4550.96 4551.21 4550.71 4549.95 4550.96 4551.21 4550.71 4550.45 4550.45 4551.21 4550.45 4550.71 4550.71 4549.95 4551.21 4550.20 4550.20 4549.95 4551.21 4551.21 304.81 304.09 306.48 305.92 306.51 310.41 305.01 305.03 307.44 305.16 308.37 303.56 305.96 308.39 309.87 306.89 306.91 310.81 304.49 309.33 310.28 307.29 305.41 307.84 307.84 305.43 306.32 308.77 311.77 306.37 303.96 306.36 308.79 309.73 304.89 308.25 307.31 308.25 311.22 304.32 309.73 310.68 312.18 306.73 305.81 4713.22 4725.61 4721.59 4717.66 4729.57 4725.47 4721.64 4729.63 4725.60 4725.48 4721.62 4729.68 4725.65 4729.59 4729.53 4721.67 4729.65 4725.55 4725.70 4725.62 4729.61 4721.76 4721.73 4733.65 4725.68 4729.71 4717.75 4721.70 4729.53 4725.74 4729.76 4733.71 4729.67 4725.70 4725.79 4733.73 4729.74 4725.76 4733.58 4717.30 4733.66 4729.68 4729.61 4717.83 4721.81 166.33 178.57 174.49 170.41 182.65 178.57 174.49 182.65 178.57 178.57 174.49 182.65 178.57 182.65 182.65 174.49 182.65 178.57 178.57 178.57 182.65 174.49 174.49 186.73 178.57 182.65 170.41 174.49 182.65 178.57 182.65 186.73 182.65 178.57 178.57 186.73 182.65 178.57 186.73 170.41 186.73 182.65 182.65 170.41 174.49 1.975 1.976 1.976 1.976 1.977 1.977 1.978 1.978 1.979 1.980 1.980 1.980 1.981 1.981 1.982 1.982 1.982 1.983 1.983 1.983 1.984 1.985 1.985 1.985 1.985 1.985 1.986 1.986 1.987 1.987 1.988 1.988 1.989 1.990 1.990 1.990 1.991 1.991 1.991 1.991 1.992 1.992 1.992 1.992 1.992 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 170.25 174.46 175.51 176.57 173.41 173.94 169.20 177.09 171.83 168.67 169.73 172.36 168.15 167.62 177.62 172.88 174.99 176.04 170.78 177.09 177.62 171.30 173.94 174.99 174.46 176.04 171.83 174.99 177.62 169.73 170.25 172.88 176.57 169.20 176.57 4607.40 4606.95 4606.84 4606.72 4607.06 4607.01 4607.51 4606.67 4607.23 4607.57 4607.46 4607.17 4607.63 4607.68 4606.61 4607.12 4606.89 4606.78 4607.34 4606.67 4606.61 4607.29 4607.01 4606.89 4606.95 4606.78 4607.23 4606.89 4606.61 4607.46 4607.40 4607.12 4606.72 4607.51 4606.72 Critical Failure Surface (circle 1) 342.99 345.09 343.51 342.99 342.99 344.04 343.51 344.04 342.46 342.46 344.57 343.51 344.04 342.99 345.09 344.57 342.46 344.57 342.99 342.99 344.04 344.04 342.99 345.09 344.04 343.51 345.09 344.04 342.99 343.51 344.57 343.51 345.62 342.46 344.57 Intersects: XL: 177.62 YL: Centre: XC: 305.21 YC: Generated failure surface: (20 points) 177.62 4606.61 184.01 4580.17 213.39 4574.62 4557.25 4550.96 4549.95 4550.71 4550.96 4550.96 4550.45 4550.71 4550.45 4551.21 4551.21 4550.20 4550.71 4550.45 4550.96 4549.95 4550.20 4551.21 4550.20 4550.96 4550.96 4550.45 4550.45 4550.96 4549.95 4550.45 4550.71 4549.95 4550.45 4550.96 4550.71 4550.20 4550.71 4549.69 4551.21 4550.20 4606.61 4713.31 4599.40 221.57 4569.54 305.83 311.63 308.65 307.69 306.77 309.20 306.76 310.14 305.29 304.36 309.17 307.71 307.69 305.29 312.58 310.14 306.22 311.09 306.23 308.10 310.54 308.65 307.17 312.03 309.60 309.06 311.07 310.00 308.50 307.16 309.58 308.11 313.53 304.76 311.50 4729.79 4733.66 4725.84 4721.84 4725.82 4729.75 4733.79 4725.78 4725.87 4729.85 4737.71 4729.82 4737.77 4733.85 4729.68 4733.73 4721.90 4729.76 4729.88 4721.93 4725.85 4733.80 4725.90 4733.73 4729.83 4725.92 4737.70 4729.91 4722.01 4733.87 4737.78 4729.90 4733.65 4729.93 4729.83 XR: 342.46 YR: Radius: R: 190.80 4592.58 230.03 4564.95 182.65 1.992 186.73 1.992 178.57 1.993 174.49 1.993 178.57 1.993 182.65 1.994 186.73 1.995 178.57 1.995 178.57 1.995 182.65 1.995 190.82 1.995 182.65 1.996 190.82 1.996 186.73 1.997 182.65 1.997 186.73 1.998 174.49 1.998 182.65 1.998 182.65 1.998 174.49 1.999 178.57 1.999 186.73 1.999 178.57 2.000 186.73 2.000 182.65 2.000 178.57 2.000 190.82 2.000 182.65 2.000 174.49 2.001 186.73 2.001 190.82 2.001 182.65 2.001 186.73 2.002 182.65 2.002 182.65 2.002 4551.21 166.33 197.98 4586.16 238.75 4560.84 205.52 247.68 256.81 4547.32 304.25 4551.21 4554.19 4546.99 266.10 4551.65 313.88 4547.21 275.52 323.48 4549.66 4547.99 Slice Geometry and Properties - Critical Failure Surface (circle 1, 46 slices) Slice Test Factor 1 1.19 2 1.19 3 1.14 4 1.04 5 1.02 6 1.02 7 1.02 8 1.00 9 0.99 10 0.99 11 0.98 12 1.05 13 1.03 14 0.96 15 0.89 16 0.89 17 0.95 X -Left 177.62 180.81 184.01 187.30 190.80 192.46 195.90 197.50 200.00 202.76 205.52 209.88 213.39 214.24 218.50 219.97 221.50 X -S Area Angle 5.21 48.4 15.62 48.4 26.32 45.1 38.70 45.1 21.98 41.8 52.51 41.8 27.70 41.8 47.49 39.1 57.81 38.5 63.29 38.5 110.23 35.2 97.52 35.2 24.59 31.8 129.90 31.8 47.20 31.8 50.53 31.8 147.85 28.6 Width 3.19 3.19 3.29 3.50 1.66 3.44 1.60 2.50 2.76 2.76 4.36 3.51 0.85 4.26 1.47 1.53 4.27 Base Length Matl Cohesion Phi 4.81 6 50.00 25.0 4.81 6 50.00 25.0 4.66 6 50.00 25.0 4.97 2 10.00 35.0 2.22 2 10.00 35.0 4.61 2 10.00 35.0 2.15 2 10.00 35.0 3.22 2 10.00 35.0 3.53 2 10.00 35.0 3.53 2 10.00 35.0 5.33 2 10.00 35.0 4.30 6 50.00 25.0 0.99 6 50.00 25.0 5.02 2 10.00 35.0 1.73 5 0.00 45.0 1.80 5 0.00 45.0 4.86 2 10.00 35.0 285.04 4548.21 333.02 4549.33 Weight 520.83 1562.17 2631.64 3962.25 2304.22 5667.71 3071.44 5352.34 6620.88 7350.34 12980.43 11556.61 2911.96 15460.46 4864.51 5053.34 16364.86 PoreWater Force 0.00 0.00 0.00 0.00 0.00 442.41 507.47 1115.59 1680.75 2163.48 4147.54 4086.03 1039.09 5735.27 1060.90 0.00 0.00 294.63 342.46 Normal Stress 105.67 362.46 624.15 827.49 1049.38 1267.80 1507.47 1731.99 1968.64 2204.69 2530.90 2937.17 3121.42 3172.84 2657.86 2505.92 3205.64 18 225.77 0.95 19 230.03 0.95 20 235.07 0.95 21 238.75 0.94 22 243.21 0.94 23 247.68 0.94 24 249.27 0.94 25 253.04 0.94 26 256.81 0.94 27 261.45 0.94 28 266.10 0.95 29 270.81 0.95 30 275.52 0.96 31 279.92 1.01 32 280.63 1.01 33 285.04 1.00 34 288.72 1.00 35 291.67 1.00 36 294.63 1.00 37 299.44 1.00 38 304.25 1.00 39 309.07 1.00 157.54 197.45 148.34 179.36 177.77 62.74 147.42 145.36 175.58 171.07 168.20 162.21 145.33 22.96 138.53 110.01 84.72 81.33 124.40 114.05 103.06 91.36 28.5 25.2 25.2 21.9 21.9 18.6 18.6 18.6 15.3 15.3 11.9 11.9 8.6 8.6 8.6 5.3 5.3 5.3 2.0 2.0 -1.3 -1.3 4.27 4.86 2 5.04 5.57 2 3.68 4.06 2 4.47 4.81 2 4.47 4.81 2 1.59 1.68 2 3.77 3.98 2 3.77 3.98 2 4.65 4.81 2 4.65 4.81 2 4.71 4.81 2 4.71 4.81 2 4.39 4.44 2 0.71 0.72 3 4.41 4.46 3 3.67 3.69 3 2.96 2.97 3 2.96 2.97 3 4.81 4.81 3 4.81 4.81 3 4.81 4.81 3 4.81 4.81 3 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 1000.00 1000.00 1000.00 1000.00 1000.00 1000.00 1000.00 1000.00 1000.00 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17481.78 21961.62 16565.05 20158.29 20118.89 7134.43 16784.16 16546.23 19982.38 19463.84 19131.31 18441.84 16514.73 2608.60 15736.95 12498.30 9656.39 9332.40 14340.16 13153.14 11889.47 10540.81 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 90.59 186.86 204.77 253.18 471.50 515.22 516.98 476.93 3425.89 3728.80 3852.34 3941.74 3934.03 4006.74 3971.64 3915.48 3917.07 3815.39 3773.87 3637.81 3563.56 3583.47 3487.50 3354.02 3217.95 3108.36 2962.31 2715.65 2481.91 2201.73 40 1.00 41 1.00 42 1.01 43 1.01 44 1.06 45 1.10 46 1.10 313.88 318.68 323.48 328.31 329.65 333.02 337.74 78.77 65.81 52.42 12.02 25.17 22.78 7.59 X -S Area: 4137.81 - 4.6 -4.6 - 8.0 - 8.0 - 8.0 - 11.3 - 11.3 4.80 4.80 4.83 1.34 3.37 4.72 4.72 4.81 3 1000.00 0.0 9085.89 4.81 3 1000.00 0.0 7585.01 4.87 3 1000.00 0.0 6032.36 1.36 3 1000.00 0.0 1381.75 3.40 2 10.00 35.0 2894.99 4.81 2 10.00 35.0 2619.82 4.81 2 10.00 35.0 873.36 Path Length: 182.96 X -S Weight: 468749.91 394.92 271.40 105.88 0.00 0.00 0.00 0.00 1934.94 1622.20 1321.48 1099.61 906.32 598.74 200.32 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS5-EQ-Mining.gmf Processed: 27 Feb 2024 08:46:29 DATA: Analysis 1 - Slope Stability - Case SS -5 Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4611.00 Profile: 2 (2 points) 0.00 4596.10 Profile: 3 (2 points) 218.80 4603.10 Profile: 4 (2 points) 221.50 4596.10 Profile: 5 (2 points) 0.00 4577.10 Profile: 6 (2 points) 221.50 4577.10 Profile: 7 (2 points) 0.00 4574.10 Profile: 8 (2 points) 221.50 4574.10 Profile: 9 (3 points) 0.00 4549.18 Profile: 10 (4 points) 221.50 4549.15 Profile: 11 (7 points) 0.00 4547.18 4546.81 489.45 4546.17 Slope Surface (13 points) 0.00 4606.96 4604.65 197.50 4604.59 4602.94 347.45 4548.81 700.00 4611.00 Material beneath: 2 - Sand and Gravel 218.50 4596.10 Material beneath: 5 - Slurry Wall 221.50 4603.10 Material beneath: 2 - Sand and Gravel 700.00 4596.10 Material beneath: 6 -- Clay 218.50 4577.10 Material beneath: 6 - Clay 700.00 4577.10 Material beneath: 2 - Sand. and Gravel 218.50 4574.10 Material beneath: 2 - Sand and Gravel 700.00 4574.10 Material beneath: 3 - Weathered Claystone Bedrock 73.68 4549.18 218.50 4549.15 Material beneath: 3 - Weathered Claystone Bedrock 347.46 4548.81 489.45 4548.17 Material beneath: 4 - Stable Claystone Bedrock 73.68 4547.18 218.50 4547.15 Phreatic Surface (4 points) 0.00 4591.10 Failure Surface 700.00 4545.00 93.40 200.00 489.45 4606.96 4604.51 4548.17 218.50 4591.10 120.00 218.50 700.00 4606.88 4603.10 4547.00 221.50 4549.15 Initial circular surface for critical search defined by: XL, XR, R Intersects: XL: 172.62 YL: 4607.15 XR: 347.46 YR: Centre: XC: 333.59 YC: 4798.43 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 700.00 4547.00 221.50 4547.15 147.50 4609.84 221.50 4603.10 700.00 4547.00 4548.81 250.00 347.46 195.90 235.07 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: a - a a - - - - 4 XL 10.00 20 -a Ca XR 10.00 20 R 200.00 50 - - a S RESULTS: Analysis 1 -- Slope Stability - Case 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: Analysis Summary 1.826 There were: 17156 successful analyses from a total of 20001 trial failure surfaces 2845 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.59 Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 X -Left 177.62 172.36 176.57 174.99 169.73 173.94 175.51 172.88 171.83 177.09 170.25 167.62 176.04 174.46 169.20 Y --Left 4606.61 4607.17 4606.72 4606.89 4607.46 4607.01 4606.84 4607.12 4607.23 4606.67 4607.40 4607.68 4606.78 4606.95 4607.51 X -Right 342.46 342.46 342.99 342.46 342.46 342.99 342.46 342.46 342.99 342.99 342.46 342.46 343.51 342.99 342.99 Y -Right 4551.21 4551.21 4550.96 4551.21 4551.21 4550.96 4551.21 4551.21 4550.96 4550.96 4551.21 4551.21 4550.71 4550.96 4550.96 X -Centre 305.21 304.21 306.19 304.72 303.69 305.68 305.12 304.61 305.56 306.59 304.09 303.56 307.56 306.08 305.03 Y -Centre 4713.31 4721.46 4717.35 4717.39 4725.53 4721.42 4717.48 4721.55 4725.57 4717.44 4725.61 4729.68 4721.45 4721.50 4729.63 a a Radius 166.33 174.49 170.41 170.41 178.57 174.49 170.41 174.49 178.57 170.41 178.57 182.65 174.49 174.49 182.65 FoS 1.591 1.592 1.592 1.593 1.594 1.595 1.600 1.601 1.601 1.601 1.601 1.601 1.602 1.602 1.603 C-- Critical 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 173.41 170.78 177.62 174.99 176.04 171.30 177.62 173.41 170.78 174.99 168.15 175.51 172.36 169.73 171.30 176.57 168.67 173.94 170.25 176.57 177.09 172.88 177.09 174.46 173.94 175.51 171.30 172.88 177.09 168.67 170.25 167.62 170.78 174.46 169.20 168.15 174.99 171.83 176.04 176.04 173.41 177.09 169.73 177.62 172.36 4607.06 4607.34 4606.61 4606.89 4606.78 4607.29 4606.61 4607.06 4607.34 4606.89 4607.63 4606.84 4607.17 4607.46 4607.29 4606.72 4607.57 4607.01 4607.40 4606.72 4606.67 4607.12 4606.67 4606.95 4607.01 4606.84 4607.29 4607.12 4606.67 4607.57 4607.40 4607.68 4607.34 4606.95 4607.51 4607.63 4606.89 4607.23 4606.78 4606.78 4607.06 4606.67 4607.46 4606.61 4607.17 343.51 343.51 344.04 344.04 342.46 342.99 342.99 342.46 342.46 342.99 342.46 344.04 342.99 342.99 343.51 343.51 343.51 343.51 344.04 342.46 342.46 344.04 344.57 344.57 342.46 342.99 342.46 342.99 343.51 342.46 342.99 342.99 344.04 343.51 343.51 344.04 344.57 343.51 344.04 342.99 344.04 342.46 344.57 344.57 344.57 4550.71 4550.71 4550.45 4550.45 4551.21 4550.96 4550.96 4551.21 4551.21 4550.96 4551.21 4550.45 4550.96 4550.96 4550.71 4550.71 4550.71 4550.71 4550.45 4551.21 4551.21 4550.45 4550.20 4550.20 4551.21 4550.96 4551.21 4550.96 4550.71 4551.21 4550.96 4550.96 4550.45 4550.71 4550.71 4550.45 4550.20 4550.71 4550.45 4550.96 4550.45 4551.21 4550.20 4550.20 4550.20 307.04 306.51 309.04 308.52 305.52 305.16 306.99 305.01 304.49 306.48 303.96 308.92 305.96 305.43 306.91 307.96 306.36 307.44 307.84 305.92 304.81 308.39 310.41 309.87 305.41 306.89 304.89 306.37 308.37 304.36 305.83 305.29 308.25 307.84 306.76 307.69 310.28 307.31 309.33 307.29 308.79 306.32 309.17 310.81 309.73 4725.51 4729.57 4721.40 4725.46 4717.57 4725.48 4717.52 4721.64 4725.70 4721.59 4729.76 4725.54 4725.65 4729.71 4729.65 4721.54 4733.71 4725.60 4733.65 4717.66 4713.22 4729.59 4725.47 4729.53 4721.73 4721.67 4725.79 4725.74 4721.62 4729.85 4729.79 4733.85 4733.73 4725.68 4733.79 4737.77 4729.61 4729.74 4725.62 4721.76 4729.67 4717.75 4737.71 4725.55 4733.66 178.57 182.65 174.49 178.57 170.41 178.57 170.41 174.49 178.57 174.49 182.65 178.57 178.57 182.65 182.65 174.49 186.73 178.57 186.73 170.41 166.33 182.65 178.57 182.65 174.49 174.49 178.57 178.57 174.49 182.65 182.65 186.73 186.73 178.57 186.73 190.82 182.65 182.65 178.57 174.49 182.65 170.41 190.82 178.57 186.73 1.604 1.604 1.605 1.605 1.607 1.607 1.607 1.608 1.608 1.608 1.609 1.609 1.609 1.609 1.609 1.610 1.611 1.611 1.611 1.611 1.611 1.611 1.614 1.614 1.614 1.614 1.615 1.615 1.615 1.616 1.616 1.616 1.616 1.616 1.617 1.617 1.617 1.617 1.617 1.618 1.618 1.619 1.619 1.619 1.619 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 171.83 177.62 174.46 174.46 173.41 170.78 174.99 176.57 173.94 168.15 169.20 172.36 169.73 168.67 176.57 173.94 168.15 174.46 175.51 175.51 171.30 167.62 170.25 176.57 177.62 172.88 171.30 169.20 174.99 171.83 177.09 173.94 172.88 168.67 170.25 167.62 167.62 172.36 169.73 4607.23 4606.61 4606.95 4606.95 4607.06 4607.34 4606.89 4606.72 4607.01 4607.63 4607.51 4607.17 4607.46 4607.57 4606.72 4607.01 4607.63 4606.95 4606.84 4606.84 4607.29 4607.68 4607.40 4606.72 4606.61 4607.12 4607.29 4607.51 4606.89 4607.23 4606.67 4607.01 4607.12 4607.57 4607.40 4607.68 4607.68 4607.17 4607.46 Critical Failure Surface (circle 1) Intersects: Centre: XL: 177.62 XC: 305.21 Generated failure surface: 342.46 343.51 342.46 342.46 342.99 342.99 343.51 345.09 345.09 342.99 342.46 343.51 343.51 344.04 344.04 344.04 343.51 345.09 343.51 344.57 344.04 344.57 344.57 342.99 342.46 344.57 342.99 345.09 342.46 345.09 345.09 342.99 343.51 342.99 343.51 344.04 343.51 342.46 342.46 YL: YC: (20 points) 4551.21 4550.71 4551.21 4551.21 4550.96 4550.96 4550.71 4549.95 4549.95 4550.96 4551.21 4550.71 4550.71 4550.45 4550.45 4550.45 4550.71 4549.95 4550.71 4550.20 4550.45 4550.20 4550.20 4550.96 4551.21 4550.20 4550.96 4549.95 4551.21 4549.95 4549.95 4550.96 4550.71 4550.96 4550.71 4550.45 4550.71 4551.21 4551.21 4606.61 4713.31 XR: 305.29 308.77 305.81 304.32 306.77 306.23 308.25 311.77 311.22 305.68 304.76 307.71 307.16 308.09 309.73 309.20 305.96 311.63 308.65 310.68 308.65 309.01 309.58 307.69 306.73 310.14 306.63 310.50 306.22 311.07 312.18 307.17 308.11 306.08 307.57 307.29 307.01 305.69 305.16 4725.87 4721.70 4721.81 4717.30 4725.82 4729.88 4725.76 4729.53 4733.58 4733.93 4729.93 4729.82 4733.87 4737.85 4725.70 4729.75 4733.63 4733.66 4725.84 4729.68 4733.80 4741.83 4737.78 4721.84 4717.83 4733.73 4729.96 4741.75 4721.90 4737.70 4729.61 4725.90 4729.90 4734.01 4733.95 4737.70 4738.00 4725.96 4730.02 342.46 YR: Radius: R: 178.57 1.620 174.49 1.621 174.49 1.621 170.41 1.621 178.57 1.621 182.65 1.621 178.57 1.622 182.65 1.622 186.73 1.622 186.73 1.622 182.65 1.622 182.65 1.622 186.73 1.622 190.82 1.623 178.57 1.623 182.65 1.624 186.73 1.624 186.73 1.624 178.57 1.624 182.65 1.624 186.73 1.624 194.90 1.624 190.82 1.625 174.49 1.625 170.41 1.625 186.73 1.625 182.65 1.626 194.90 1.626 174.49 1.627 190.82 1.627 182.65 1.627 178.57 1.627 182.65 1.627 186.73 1.628 186.73 1.628 190.82 1.628 190.82 1.628 178.57 1.628 182.65 1.628 4551.21 166.33 177.62 4580.17 213.39 4557.25 256.81 4547.32 304.25 4551.21 4606.61 4574.62 4554.19 4546.99 184.01 221.57 266.10 313.88 4599.40 4569.54 4551.65 4547.21 190.80 230.03 275.52 323.48 4592.58 4564.95 4549.66 4547.99 Slice Geometry and Properties - Critical Failure Surface (circle 1, 46 slices) Slice Test Factor 1 1.13 2 1.13 3 1.09 4 0.98 5 0.96 6 0.96 7 0.96 8 0.95 9 0.95 10 0.95 11 0.93 12 1.01 13 1.00 14 0.92 15 0.85 X -Left 177.62 180.81 184.01 187.30 190.80 192.46 195.90 197.50 200.00 202.76 205.52 209.88 213.39 214.24 218.50 x -S Area 5.21 15.62 26.32 38.70 21.98 52.51 27.70 47.49 57.81 63.29 110.23 97.52 24.59 129.90 47.20 Base Angle Width Length Matl Cohesion 48.4 3.19 4.81 6 50.00 48.4 3.19 4.81 6 50.00 45.1 3.29 4.66 6 50.00 45.1 3.50 4.97 2 10.00 41.8 1.66 2.22 2 10.00 41.8 3.44 4.61 2 10.00 41.8 1.60 2.15 2 10.00 39.1 2.50 3.22 2 10.00 38.5 2.76 3.53 2 10.00 38.5 2.76 3.53 2 10.00 35.2 4.36 5.33 2 10.00 35.2 3.51 4.30 6 50.00 31.8 0.85 0.99 6 50.00 31.8 4.26 5.02 2 10.00 31.8 1.47 1.73 5 0.00 Phi 25.0 25.0 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 25.0 25.0 35.0 45.0 197.98 238.75 285.04 333.02 Weight 520.83 1562.17 2631.64 3962.25 2304.22 5667.71 3071.44 5352.34 6620.88 7350.34 12980.43 11556.61 2911.96 15460.46 4864.51 4586.16 4560.84 4548.21 4549.33 PoreWater Force 0.00 0.00 0.00 0.00 0.00 442.41 507.47 1115.59 1680.75 2163.48 4147.54 4086.03 1039.09 5735.27 1060.90 205.52 247.68 294.63 342.46 Normal Stress 95.91 340.93 593.46 779.88 993.96 1205.99 1440.51 1663.84 1896.59 2127.91 2453.71 2871.05 3059.35 3091.89 2551.92 16 0.85 17 0.92 18 0.92 19 0.92 20 0.92 21 0.92 22 0.92 23 0.92 24 0.92 25 0.92 26 0.93 27 0.93 28 0.94 29 0.94 30 0.95 31 1.01 32 1.01 33 1.00 34 1.00 35 1.00 36 1.00 37 1.00 219.97 221.50 225.77 230.03 235.07 238.75 243.21 247.68 249.27 253.04 256.81 261.45 266.10 270.81 275.52 279.92 280.63 285.04 288.72 291.67 294.63 299.44 50.53 147.85 157.54 197.45 148.34 179.36 177.77 62.74 147.42 145.36 175.58 171.07 168.20 162.21 145.33 22.96 138.53 110.01 84.72 81.33 124.40 114.05 31.8 28.6 28.5 25.2 25.2 21.9 21.9 18.6 18.6 18.6 15.3 15.3 11.9 11.9 8.6 8.6 8.6 5.3 5.3 5.3 2.0 2.0 1.53 1.80 5 4.27 4.86 2 4.27 4.86 2 5.04 5.57 2 3.68 4.06 2 4.47 4.81 2 4.47 4.81 2 1.59 1.68 2 3.77 3.98 2 3.77 3.98 2 4.65 4.81 2 4.65 4.81 2 4.71 4.81 2 4.71 4.81 2 4.39 4.44 2 0.71 0.72 3 4.41 4.46 3 3.67 3.69 3 2.96 2.97 3 2.96 2.97 3 4.81 4.81 3 4.81 4.81 3 10.00 10.00 x,35.0 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 1000.00 1000.00 1000.00 1000.00 1000.00 1000.00 1000.00 0.00 45.0 5053.34 35.0 16364.86 17481.78 35.0 21961.62 35.0 16565.05 35.0 20158.29 35.0 20118.89 35.0 7134.43 35.0 16784.16 35.0 16546.23 35.0 19982.38 35.0 19463.84 35.0 19131.31 35.0 18441.84 35.0 16514.73 0.0 2608.60 0.0 15736.95 0.0 12498.30 0.0 9656.39 0.0 9332.40 0.0 14340.16 0.0 13153.14 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 90.59 186.86 204.77 253.18 471.50 515.22 2376.07 3090.71 3303.32 3610.24 3729.88 3832.03 3824.54 3911.16 3876.86 3822.07 3839.32 3739.65 3714.36 3580.43 3522.25 3565.91 3469.91 3343.25 3207.19 3097.60 2958.29 2711.63 38 1.00 39 1.00 40 1.00 41 1.00 42 1.01 43 1.01 44 1.08 45 1.12 46 1.12 304,25 309.07 313.88 318.68 323.48 328.31 329.65 333.02 337.74 X -S Area: 103.06 91.36 78.77 65.81 52.42 12.02 25.17 22.78 7.59 4137.81 - 1.3 - 1.3 - 4.6 - 4.6 - 8.0 - 8.0 - 8.0 - 11.3 - 11.3 4.81 4.81 4.80 4.80 4.83 1.34 3.37 4.72 4.72 4.81 3 1000.00 0.0 4.81 3 1000.00 0.0 4.81 3 1000.00 0.0 4.81 3 1000.00 0.0 4.87 3 1000.00 0.0 1.36 3 1000.00 0.0 3.40 2 10.00 35.0 4.81 2 10.00 35.0 4.81 2 10.00 35.0 Path Length: 182.96 11889.47 10540.81 9085.89 7585.01 6032.36 1381.75 2894.99 2619.82 873.36 X -S Weight: 468749.91 516.98 476.93 394.92 271.40 105.88 0.00 0.00 0.00 0.00 2484.60 2204.42 1944.37 1631.63 1337.71 1115.83 917.47 609.63 204.14 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS6-Mining.gmf Processed: 27 Feb 2024 08:56:00 DATA: Analysis 1 - Slope Stability - Case SS -6 Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4596.00 Profile: 2 (2 points) 0.00 4591.65 Profile: 3 (2 points) 198.50 4594.67 Profile: 4 (2 points) 201.50 4591.65 Profile: 5 (2 points) 0.00 4573.65 Profile: 6 (2 points) 201.50 4573.65 Profile: 7 (2 points) 0.00 4571.17 Profile: 8 (2 points) 201.50 4571.17 Profile: 9 (3 points) 0.00 4518.00 Profile: 10 (5 points) 201.50 4539.33 4549.00 Profile: 11 (8 points) 0.00 4516.00 4543.03 316.47 4544.18 Slope Surface (10 points) 4592.65 4594.67 0.00 4594.67 201.50 4549.00 600.00 4596.00 Material beneath: 2 - Sand and Gravel 198.50 4591.65 Material beneath: 5 - Slurry Wall 201.50 4594.67 Material beneath: 2 - Sand and Gravel 600.00 4591.65 Material beneath: 6 - Clay 198.50 4573.65 Material beneath: 6 - Clay 600.00 4573.65 Material beneath: 2 - Sand and Gravel 198.50 4571.17 Material beneath: 2 - Sand and Gravel 600.00 4571.17 Material beneath: 3 - Weathered 22.27 4522.00 Material beneath: 3 - Weathered 252.56 4545.03 Material beneath: 22.27 Phreatic Surface (4 points) 0.00 4576.67 Failure Surface Claystone Bedrock 198.50 4539.33 Claystone Bedrock 316.47 4546.18 4 - Stable Claystone Bedrock 4520.00 198.50 433.64 4546.29 116.00 215.01 198.50 4593.44 4594.91 4576.67 4537.33 600.00 4547.00 152.70 4594.19 316.47 4546.18 201.50 4546.18 Initial circular surface for critical search defined by: XL, XR, R Intersects: XL: 152.70 YL: 4594.19 XR: 316.47 YR: Centre: XC: 315.49 YC: 4846.18 Radius: R: Variable Restraints Parameter descriptor: XL XR R 433.64 4548.29 201.50 4537.33 158.60 4594.32 433.64 4548.29 316.47 4546.18 4546.18 300.00 600.00 252.56 198.50 600.00 Range of variation: Trial positions within range: a — - a 10.00 20 10.00 20 300.00 50 lawsma RESULTS: Analysis 1 - Slope Stability - Case 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: Analysis Summary 2.384 There were: 14887 successful analyses from a total of 20001 trial failure surfaces 5114 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.21 Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 X -Left 156.65 156.12 157.17 156.65 157.70 157.70 157.17 154.54 156.12 155.07 157.70 155.59 154.54 156.65 157.70 157.17 155.07 156.12 157.70 Y -Left 4594.28 4594.27 4594.29 4594.28 4594.30 4594.30 4594.29 4594.23 4594.27 4594.24 4594.30 4594.25 4594.23 4594.28 4594.30 4594.29 4594.24 4594.27 4594.30 X -Right 311.47 312.52 311.47 312.52 311.47 313.05 312.52 312.00 311.47 312.00 312.52 312.00 313.05 313.58 312.00 313.58 313.05 312.00 313.58 Y -Right 4548.58 4548.08 4548.58 4548.08 4548.58 4547.82 4548.08 4548.33 4548.58 4548.33 4548.08 4548.33 4547.82 4547.57 4548.33 4547.57 4547.82 4548.33 4547.57 X -Centre 271.89 274.05 272.32 274.49 272.76 275.65 274.92 272.45 271.46 272.89 275.36 273.32 275.02 277.08 273.04 277.52 275.46 273.76 277.97 Y -Centre 4699.60 4705.69 4699.72 4705.80 4699.83 4705.70 4705.90 4705.68 4699.49 4705.79 4706.01 4705.90 4711.84 4711.94 4699.51 4712.03 4711.94 4706.00 4712.13 - - al a Radius FoS 156.12 2.210 <-- Critical 162.24 2.212 156.12 2.213 162.24 2.218 156.12 2.218 162.24 2.224 162.24 2.225 162.24 2.227 156.12 2.227 162.24 2.232 162.24 2.232 162.24 2.232 168.37 2.233 168.37 2.234 156.12 2.234 168.37 2.238 168.37 2.239 162.24 2.240 168.37 2.242 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 152.96 156.12 156.65 152.96 153.49 155.59 156.65 153.49 154.02 157.17 154.54 157.70 152.96 155.07 154.02 156.12 157.17 153.49 155.59 156.65 155.07 157.17 157.70 151.38 156.12 154.54 151.91 151.38 157.70 157.70 152.44 156.65 154.02 155.59 151.91 155.07 157.70 157.17 152.96 155.59 154.54 156.12 155.59 152.44 157.70 4594.20 4594.27 4594.28 4594.20 4594.21 4594.25 4594.28 4594.21 4594.22 4594.29 4594.23 4594.30 4594.20 4594.24 4594.22 4594.27 4594.29 4594.21 4594.25 4594.28 4594.24 4594.29 4594.30 4594.16 4594.27 4594.23 4594.17 4594.16 4594.30 4594.30 4594.18 4594.28 4594.22 4594.25 4594.17 4594.24 4594.30 4594.29 4594.20 4594.25 4594.23 4594.27 4594.25 4594.18 4594.30 311.47 313.58 314.63 312.52 311.47 313.05 312.00 312.52 311.47 314.63 311.47 314.63 313.58 314.10 312.52 313.05 312.00 313.58 314.10 313.05 311.47 313.05 312.00 312.00 314.10 312.52 312.00 313.05 313.05 315.68 312.00 314.10 313.58 311.47 313.05 312.52 314.10 314.10 312.00 315.15 313.58 311.47 312.52 313.05 316.73 4548.58 4547.57 4547.06 4548.08 4548.58 4547.82 4548.33 4548.08 4548.58 4547.06 4548.58 4547.06 4547.57 4547.32 4548.08 4547.82 4548.33 4547.57 4547.32 4547.82 4548.58 4547.82 4548.33 4548.33 4547.32 4548.08 4548.33 4547.82 4547.82 4546.56 4548.33 4547.32 4547.57 4548.58 4547.82 4548.08 4547.32 4547.32 4548.33 4546.81 4547.57 4548.58 4548.08 4547.82 4546.19 270.86 276.64 279.67 273.41 271.29 275.90 274.19 273.85 271.72 280.12 272.16 280.57 275.97 278.04 274.29 276.34 274.63 276.41 278.48 276.78 272.59 277.23 275.07 271.81 278.92 274.72 272.24 274.35 277.67 283.16 272.68 279.37 276.85 273.03 274.78 275.16 280.26 279.82 273.11 281.06 277.29 273.46 275.60 275.22 365.29 4705.66 4711.84 4718.02 4711.84 4705.77 4712.04 4706.11 4711.94 4705.88 4718.11 4705.99 4718.20 4717.96 4718.04 4712.04 4712.14 4706.21 4718.06 4718.13 4712.24 4706.10 4712.34 4706.32 4711.83 4718.23 4712.15 4711.94 4717.97 4712.43 4724.22 4712.04 4718.32 4718.15 4706.21 4718.07 4712.25 4718.50 4718.41 4712.14 4724.18 4718.25 4706.31 4712.35 4718.16 4993.56 162.24 168.37 174.49 168.37 162.24 168.37 162.24 168.37 162.24 174.49 162.24 174.49 174.49 174.49 168.37 168.37 162.24 174.49 174.49 168.37 162.24 168.37 162.24 168.37 174.49 168.37 168.37 174.49 168.37 180.61 168.37 174.49 174.49 162.24 174.49 168.37 174.49 174.49 168.37 180.61 174.49 162.24 168.37 174.49 450.00 2.244 2.245 2.245 2.246 2.246 2.246 2.248 2.248 2.249 2.250 2.251 2.251 2.253 2.254 2.254 2.254 2.255 2.257 2.257 2.259 2.261 2.261 2.261 2.262 2.262 2.263 2.264 2.264 2.264 2.265 2.266 2.266 2.266 2.267 2.267 2.267 2.269 2.269 2.270 2.270 2.271 2.273 2.273 2.274 2.274 65 153.49 66 156.65 67 156.12 68 155.07 69 157.70 70 157.70 71 154.02 72 157.70 73 156.12 74 157.70 75 157.70 76 157.70 77 157.70 78 157.70 79 157.70 80 153.49 81 157.17 82 157.70 83 157.70 84 157.70 85 157.70 86 151.91 87 149.81 88 149.81 89 156.65 90 157.70 91 157.17 92 154.54 93 157.70 94 157.70 95 156.65 96 155.59 97 152.96 98 157.70 99 150.33 4594.21 4594.28 4594.27 4594.24 4594.30 4594.30 4594.22 4594.30 4594.27 4594.30 4594.30 4594.30 4594.30 4594.30 4594.30 4594.21 4594.29 4594.30 4594.30 4594.30 4594.30 4594.17 4594.13 4594.13 4594.28 4594.30 4594.29 4594.23 4594.30 4594.30 4594.28 4594.25 4594.20 4594.30 4594.14 Critical Failure Surface (circle 1) 314.63 315.15 315.15 313.58 316.73 316.21 314.63 316.73 312.52 316.73 316.21 316.73 316.21 316.73 316.21 312.00 315.15 316.21 316.73 316.21 316.73 314.10 311.47 312.52 311.47 316.21 312.52 314.63 315.68 316.21 312.52 313.58 313.05 315.68 312.52 Intersects: XL: 156.65 YL: Centre: XC: 271.89 YC: Generated failure surface: (20 points) 156.65 4594.28 162.86 4570.89 191.04 4566.05 198.80 4551.19 4547.06 4546.81 4546.81 4547.57 4546.19 4546.31 4547.06 4546.19 4548.08 4546.19 4546.31 4546.19 4546.31 4546.19 4546.31 4548.33 4546.81 4546.31 4546.19 4546.31 4546.19 4547.32 4548.58 4548.08 4548.58 4546.31 4548.08 4547.06 4546.56 4546.31 4548.08 4547.57 4547.82 4546.56 4548.08 4594.28 4699.60 4587.86 4561.64 278.96 281.96 281.51 277.73 363.48 365.13 279.41 361.68 276.04 354.45 363.33 359.87 361.52 358.07 354.29 273.55 282.41 359.71 356.26 357.90 352.64 277.32 270.21 272.73 273.90 356.10 276.93 279.85 364.65 352.47 276.48 278.18 275.66 362.85 273.17 4724.12 4724.35 4724.26 4718.34 4987.59 4993.64 4724.21 4981.63 4712.44 4957.73 4987.68 4975.66 4981.71 4969.68 4957.81 4712.25 4724.43 4975.74 4963.71 4969.77 4951.74 4724.15 4711.82 4717.97 4706.42 4963.79 4712.64 4724.30 4993.89 4951.83 4712.54 4718.43 4718.26 4987.92 4718.07 XR: 311.47 YR: Radius: R: 169.42 4581.81 206.81 4557.69 180.61 2.274 180.61 2.274 180.61 2.274 174.49 2.274 443.88 2.275 450.00 2.276 180.61 2.276 437.76 2.276 168.37 2.276 413.27 2.276 443.88 2.276 431.63 2.276 437.76 2.277 425.51 2.277 413.27 2.277 168.37 2.278 180.61 2.278 431.63 2.278 419.39 2.278 425.51 2.279 407.14 2.279 180.61 2.279 168.37 2.279 174.49 2.279 162.24 2.280 419.39 2.280 168.37 2.280 180.61 2.280 450.00 2.280 407.14 2.280 168.37 2.280 174.49 2.280 174.49 2.281 443.88 2.281 174.49 2.281 4548.58 156.12 176.32 4576.15 215.03 4554.20 183.54 223.43 231.99 4543.55 276.19 4548.58 4548.66 4543.54 240.69 4546.63 285.10 4544.04 249.48 4545.10 293.97 4545.05 Slice Geometry and Properties - Critical Failure Surface (circle 1, 48 slices) Slice X -S Base Test X -Left Area Angle Width Length Matl Cohesion Phi Factor 1 156.65 1.18 2 158.60 1.08 3 162.86 1.05 4 166.14 1.05 5 169.42 1.03 6 172.55 1.03 7 175.69 1.03 8 176.32 1.01 9 179.75 1.07 10 183.15 0.99 11 187.09 0.99 12 191.04 0.97 13 194.77 0.97 14 198.50 0.91 15 200.04 0.91 16 201.50 0.96 17 204.15 0.96 2.01 18.21 26.33 36.36 43.54 51.68 11.50 67.09 75.18 97.40 107.57 110.56 118.58 51.16 49.69 93.00 96.61 45.9 45.9 42.7 42.7 39.4 39.4 39.4 36.1 36.1 33.2 32.8 29.6 29.5 26.9 26.3 26.3 26.3 1.95 4.26 3.28 3.28 3.13 3.13 0.64 3.42 3.40 3.95 3.95 3.73 3.73 1.54 1.46 2.65 2.65 2.81 6.12 4.46 4.46 4.05 4.05 0.82 4.24 4.21 4.71 4.70 4.29 4.29 1.73 1.63 2.96 2.96 6 50.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 6 50.00 2 10.00 2 10.00 2 10.00 2 10.00 5 0.00 5 0.00 2 10.00 2 10.00 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 25.0 35.0 35.0 35.0 35.0 45.0 45.0 35.0 35.0 258.35 4544.07 302.77 4546.57 Weight 201.18 1922.21 2894.40 4045.99 4876.85 5811.38 1297.70 7660.58 8653.68 11284.86 12603.85 13063.62 14102.05 5230.87 4968.66 10475.56 10888.21 PoreWater Force 0.00 0.00 0.00 0.00 0.00 0.00 13.42 468.52 1118.70 2001.16 2739.44 3126.45 3692.52 801.00 0.00 0.00 0.00 267.26 311.47 Normal Stress 65.40 336.74 679.26 950.80 1232.83 1469.58 1618.58 1835.26 2226.73 2440.32 2749.22 3076.78 3332.90 2851.29 2778.89 3410.67 3545.10 18 0.96 19 0.96 20 0.95 21 0.95 22 0.95 23 0.95 24 0.95 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.97 31 1.01 32 1.01 33 1.01 34 1.00 35 1.00 36 1.00 37 1.00 38 1.00 39 1.00 206.81 210.91 215.01 218.40 221.80 223.43 227.71 231.99 236.34 240.69 243.27 246.38 249.48 251.29 252.56 255.46 258.35 259.28 261.86 264.44 267.26 271.73 155.73 23.0 163.17 23.0 137.44 19.7 136.03 19.7 64.96 19.7 168.16 16.4 164.77 16.4 163.23 13.2 158.57 13.2 91.79 9.9 107.75 9.9 104.79 9.9 59.41 6.6 41.23 6.6 91.51 6.6 88.45 6.6 27.60 3.3 75.10 3.3 72.29 3.3 75.84 3.3 112.47 0.1 102.91 0.1 4.10 4.10 3.39 3.39 1.63 4.28 4.28 4.35 4.35 2.58 3.11 3.11 1.80 1.27 2.90 2.90 0.93 2.58 2.58 2.82 4.46 4.46 4.45 4.45 3.61 3.61 1.73 4.46 4.46 4.46 4.46 2.62 3.15 3.15 1.82 1.28 2.91 2.91 0.93 2.59 2.59 2.83 4.46 4.46 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17563.02 18413.54 15554.60 15476.25 7409.41 19179.31 18788.83 18609.62 18074.38 10459.27 12288.09 11973.68 6796.79 4718.60 10471.75 10123.80 3159.46 8619.86 8345.28 8783.69 13030.13 11928.20 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 53.33 159.89 134.63 109.33 292.42 353.43 123.67 361.60 385.87 449.77 733.49 734.71 3773.91 3956.73 4113.72 4093.31 4072.71 4095.54 4012.28 3985.16 3870.39 3838.54 3748.54 3654.23 3636.14 3651.53 3564.57 3444.39 3388,06 3312.32 3206.01 3084.37 2918.53 2671.74 40 1.00 41 1.00 42 1.01 43 1.01 44 1.01 45 1.07 46 1.07 47 1.11 48 1.11 276.19 280.65 285.10 289.54 293.97 298.67 300.53 302.77 307.12 X -S Area: 92.66 82.00 70.46 58.77 48.86 15.37 15.51 20.20 6.73 3830.27 - 3.2 - 3.2 - 6.5 - 6.5 - 9.8 - 9.8 - 9.8 - 13.0 - 13.0 4.46 4.46 4.44 4.44 4.70 1.86 2.24 4.35 4.35 4.46 4.46 4.46 4.46 4.77 1.89 2.27 4.46 4.46 Path Length: 169.63 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 2 10.00 2 10.00 2 10.00 2 10.00 0.0 0.0 0.0 0.0 0.0 35.0 35.0 35.0 35.0 10742.58 9507.51 8167.86 6809.00 5653.33 1771.79 1783.42 2322.63 774.30 X -S Weight: 437281.66 700.59 630.67 525.54 384.90 215.70 18.86 0.00 0.00 0.00 2435.76 2158.66 1893.09 1586.71 1281.26 1007.64 842.95 577.57 193.30 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS6-EQ-Mining.gmf Processed: 27 Feb 2024 12:50:01 DATA: Analysis 1 - Slope Stability - Case SS -6 Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (11 profiles) Profile: 1 (2 points) Material beneath: 6 - Clay 0.00 4596.00 Profile: 2 (2 points) 0.00 4591.65 Profile: 3 (2 points) 198.50 4594.67 Profile: 4 (2 points) 201.50 4591.65 Profile: 5 (2 points) 0.00 4573.65 Profile: 6 (2 points) 201.50 4573.65 Profile: 7 (2 points) 0.00 4571.17 Profile: 8 (2 points) 201.50 4571.17 Profile: 9 (3 points) 0.00 4518.00 Profile: 10 (5 points) 201.50 4539.33 4549.00 Profile: 11 (8 points) 0.00 4516.00 4543.03 316.47 4544.18 Slope Surface (10 points) 4592.65 4594.67 0.00 4594.67 201.50 4549.00 600.00 4596.00 Material beneath: 2 - Sand and Gravel 198.50 4591.65 Material beneath: 5 - Slurry Wall 201.50 4594.67 Material beneath: 2 - Sand and Gravel 600.00 4591.65 Material beneath: 6 - Clay 198.50 4573.65 Material beneath: 6 - Clay 600.00 4573.65 Material beneath: 2 - Sand and Gravel 198.50 4571.17 Material beneath: 2 - Sand and Gravel 600.00 4571.17 Material beneath: 3 - Weathered Claystone Bedrock 22.27 4522.00 198.50 4539.33 Material beneath: 3 - Weathered Claystone Bedrock 252.56 4545.03 316.47 4546.18 Material beneath: 4 - Stable Claystone Bedrock Phreatic Surface (4 points) 0.00 4576.67 Failure Surface 22.27 433.64 116.00 215.01 4520.00 4546.29 198.50 4537.33 600.00 4547.00 4593.44 152.70 4594.91 316.47 198.50 4576.67 201.50 4594.19 4546.18 4546.18 Initial circular surface for critical search defined by: XL, XR, R Intersects: XL: 152.70 YL: 4594.19 XR: 316.47 YR: Centre: XC: 315.49 YC: 4846.18 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.063 433.64 4548.29 201.50 4537.33 158.60 4594.32 433.64 4548.29 316.47 4546.18 4546.18 300.00 600.00 252.56 198.50 600.00 Variable Restraints Parameter descriptor: XL Range of variation: 10.00 Trial positions within range: 20 -J. a -� a - :- - - XR 10.00 20 - - - - R 300.00 50 RESULTS: Analysis 1 - Slope Stability - Case 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: 1.945 Analysis Summary There were: 14887 successful analyses from a total of 20001 trial failure surfaces 5114 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.81 Results Summary -- Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 X -Left 156.65 156.12 157.17 156.65 157.70 154.54 156.12 155.07 157.17 157.70 154.54 155.59 152.96 157.70 152.96 Y -Left 4594.28 4594.27 4594.29 4594.28 4594.30 4594.23 4594.27 4594.24 4594.29 4594.30 4594.23 4594.25 4594.20 4594.30 4594.20 X -Right 311.47 312.52 311.47 312.52 311.47 312.00 311.47 312.00 312.52 313.05 313.05 312.00 311.47 312.52 312.52 Y -Right 4548.58 4548.08 4548.58 4548.08 4548.58 4548.33 4548.58 4548.33 4548.08 4547.82 4547.82 4548.33 4548.58 4548.08 4548.08 X -Centre 271.89 274.05 272.32 274.49 272.76 272.45 271.46 272.89 274.92 275.65 275.02 273.32 270.86 275.36 273.41 Y -Centre 4699.60 4705.69 4699.72 4705.80 4699.83 4705.68 4699.49 4705.79 4705.90 4705.70 4711.84 4705.90 4705.66 4706.01 4711.84 Radius 156.12 162.24 156.12 162.24 156.12 162.24 156.12 162.24 162.24 162.24 168.37 162.24 162.24 162.24 168.37 FoS 1.808 1.809 1.811 1.815 1.816 1.817 1.821 1.822 1.822 1.824 1.824 1.824 1.826 1.829 1.830 <-- Critical 16 156.65 17 153.49 18 155.07 19 157.70 20 156.12 21 153.49 22 154.02 23 157.17 24 154.54 25 152.96 26 155.59 27 151.38 28 156.12 29 154.02 30 157.70 31 156.65 32 156.65 33 151.91 34 153.49 35 151.38 36 155.07 37 152.44 38 156.12 39 151.91 40 155.07 41 157.17 42 157.17 43 154.54 44 149.81 45 155.59 46 157.70 47 152.96 48 149.81 49 156.65 50 154.02 51 150.33 52 155.59 53 150.33 54 152.44 55 156.12 56 155.07 57 157.17 58 157.70 59 149.81 60 150.86 4594.28 4594.21 4594.24 4594.30 4594.27 4594.21 4594.22 4594.29 4594.23 4594.20 4594.25 4594.16 4594.27 4594.22 4594.30 4594.28 4594.28 4594.17 4594.21 4594.16 4594.24 4594.18 4594.27 4594.17 4594.24 4594.29 4594.29 4594.23 4594.13 4594.25 4594.30 4594.20 4594.13 4594.28 4594.22 4594.14 4594.25 4594.14 4594.18 4594.27 4594.24 4594.29 4594.30 4594.13 4594.15 313.58 311.47 313.05 312.00 312.00 312.52 311.47 313.58 311.47 313.58 313.05 312.00 313.58 312.52 313.58 312.00 314.63 312.00 313.58 313.05 314.10 312.00 313.05 313.05 311.47 314.63 312.00 312.52 311.47 314.10 314.63 312.00 312.52 313.05 313.58 311.47 311.47 312.52 313.05 314.10 312.52 313.05 312.00 313.58 311.47 4547.57 4548.58 4547.82 4548.33 4548.33 4548.08 4548.58 4547.57 4548.58 4547.57 4547.82 4548.33 4547.57 4548.08 4547.57 4548.33 4547.06 4548.33 4547.57 4547.82 4547.32 4548.33 4547.82 4547.82 4548.58 4547.06 4548.33 4548.08 4548.58 4547.32 4547.06 4548.33 4548.08 4547.82 4547.57 4548.58 4548.58 4548.08 4547.82 4547.32 4548.08 4547.82 4548.33 4547.57 4548.58 277.08 271.29 275.46 273.04 273.76 273.85 271.72 277.52 272.16 275.97 275.90 271.81 276.64 274.29 277.97 274.19 279.67 272.24 276.41 274.35 278.04 272.68 276.34 274.78 272.59 280.12 274.63 274.72 270.21 278.48 280.57 273.11 272.73 276.78 276.85 270.64 273.03 273.17 275.22 278.92 275.16 277.23 275.07 275.25 271.07 4711.94 4705.77 4711.94 4699.51 4706.00 4711.94 4705.88 4712.03 4705.99 4717.96 4712.04 4711.83 4711.84 4712.04 4712.13 4706.11 4718.02 4711.94 4718.06 4717.97 4718.04 4712.04 4712.14 4718.07 4706.10 4718.11 4706.21 4712.15 4711.82 4718.13 4718.20 4712.14 4717.97 4712.24 4718.15 4711.92 4706.21 4718.07 4718.16 4718.23 4712.25 4712.34 4706.32 4724.07 4712.03 168.37 1.830 162.24 1.830 168.37 1.830 156.12 1.831 162,24 1.832 168.37 1.832 162.24 1.833 168.37 1.834 162.24 1.836 174.49 1.837 168.37 1.837 168.37 1.838 168.37 1.838 168.37 1.839 168.37 1.839 162.24 1.839 174.49 1.841 168.37 1.841 174.49 1.842 174.49 1.842 174.49 1.843 168.37 1.844 168.37 1.845 174.49 1.845 162.24 1.846 174.49 1.846 162.24 1.847 168.37 1.848 168.37 1.848 174.49 1.848 174.49 1.849 168.37 1.849 174.49 1.849 168.37 1.850 174.49 1.850 168.37 1.851 162.24 1.852 174.49 1.852 174.49 1.852 174.49 1.853 168.37 1.853 168.37 1.853 162.24 1.853 180.61 1.853 168.37 1.855 61 150.86 62 150.33 63 154.54 64 153.49 65 151.91 66 157.70 67 156.65 68 153.49 69 151.38 70 148.23 71 156.12 72 155.59 73 152.96 74 149.28 75 154.02 76 155.07 77 155.59 78 148.23 79 157.70 80 157.70 81 157.17 82 157.70 83 151.91 84 148.75 85 157.70 86 151.38 87 157.70 88 157.70 89 156.12 90 157.70 91 157.70 92 157.70 93 148.75 94 157.70 95 150.86 96 152.44 97 157.70 98 154.02 99 157.70 4594.15 4594.14 4594.23 4594.21 4594.17 4594.30 4594.28 4594.21 4594.16 4594.10 4594.27 4594.25 4594.20 4594.12 4594.22 4594.24 4594.25 4594.10 4594.30 4594.30 4594.29 4594.30 4594.17 4594.11 4594.30 4594.16 4594.30 4594.30 4594.27 4594.30 4594.30 4594.30 4594.11 4594.30 4594.15 4594.18 4594.30 4594.22 4594.30 Critical Failure Surface (circle 1) Intersects: XL: Centre: XC: Generated failure surface: 156.65 271.89 312.52 313.58 313.58 312.00 314.10 313.05 314.10 314.63 311.47 312.00 311.47 312.52 313.05 311.47 314.63 313.58 315.15 313.05 316.73 315.68 314.10 316.73 311.47 312.00 316.21 312.52 316.73 316.21 312.52 314.10 316.73 316.21 313.05 316.73 313.58 314.10 316.73 312.00 316.21 YL: YC: (20 points) 4548.08 4547.57 4547.57 4548.33 4547.32 4547.82 4547.32 4547.06 4548.58 4548.33 4548.58 4548.08 4547.82 4548.58 4547.06 4547.57 4546.81 4547.82 4546.19 4546.56 4547.32 4546.19 �( 4548.58 4548.33 4546.31 4548.08 4546.19 4546.31 4548.08 4547.32 4546.19 4546.31 4547.82 4546.19 4547.57 4547.32 4546.19 4548.33 4546.31 4594.28 4699.60 XR: 273.60 275.69 277.29 273.55 277.32 277.67 279.37 278.96 271.51 271.12 273.46 275.60 275.66 269.78 279.41 277.73 281.06 273.63 365.29 283.16 279.82 363.48 271.94 271.56 365.13 274.04 361.68 363.33 276.04 280.26 359.87 361.52 274.06 354.45 276.13 277.76 358.07 273.99 359.71 4718.17 4724.16 4718.25 4712.25 4724.15 4712.43 4718.32 4724.12 4712.14 4717.96 4706.31 4712.35 4718.26 4711.71 4724.21 4718.34 4724.18 4724.08 4993.56 4724.22 4718.41 4987.59 4712.24 4718.07 4993.64 4718.27 4981.63 4987.68 4712.44 4718.50 4975.66 4981.71 4724.18 4957.73 4724.26 4724.24 4969.68 4712.35 4975.74 311.47 YR: Radius: R: 174.49 1.855 180.61 1.856 174.49 1.856 168.37 1.857 180.61 1.857 168.37 1.857 174.49 1.857 180.61 1.858 168.37 1.858 174.49 1.858 162.24 1.859 168.37 1.859 174.49 1.859 168.37 1.860 180.61 1.860 174.49 1.860 180.61 1.860 180.61 1.861 450.00 1.861 180.61 1.861 174.49 1.861 443.88 1.861 168.37 1.861 174.49 1.861 450.00 1.862 174.49 1.862 437.76 1.862 443.88 1.862 168.37 1.862 174.49 1.863 431.63 1.863 437.76 1.863 180.61 1.863 413.27 1.863 180.61 1.863 180.61 1.863 425.51 1.864 168.37 1.864 431.63 1.864 4548.58 156.12 156.65 4570.89 191.04 4551.19 231.99 4543.55 276.19 4548.58 4594.28 4566.05 4548.66 4543.54 162.86 198.80 240.69 285.10 4587.86 4561.64 4546.63 4544.04 169.42 206.81 249.48 293.97 4581.81 4557.69 4545.10 4545.05 Slice Geometry and Properties - Critical Failure Surface (circle 1, 48 slices) Slice Test Factor 1 1.14 2 1.03 3 1.00 4 1.00 5 0.98 6 0.98 7 0.98 8 0.97 9 1.04 10 0.95 11 0.95 12 0.94 13 0.94 14 0.88 15 0.88 X -Left 156.65 158.60 162.86 166.14 169.42 172.55 175.69 176.32 179.75 183.15 187.09 191.04 194.77 198.50 200.04 x -s Area 2.01 18.21 26.33 36.36 43.54 51.68 11.50 67.09 75.18 97.40 107.57 110.56 118.58 51.16 49.69 Angle 45.9 45.9 42.7 42.7 39.4 39.4 39.4 36.1 36.1 33.2 32.8 29.6 29.5 26.9 26.3 Base Width Length Matl Cohesion 1.95 2.81 6 50.00 4.26 6.12 2 10.00 3.28 4.46 2 10.00 3.28 4.46 2 10.00 3.13 4.05 2 10.00 3.13 4.05 2 10.00 0.64 0.82 2 10.00 3.42 4.24 2 10.00 3.40 4.21 6 50.00 3.95 4.71 2 10.00 3.95 4.70 2 10.00 3.73 4.29 2 10.00 3.73 4.29 2 10.00 1.54 1.73 5 0.00 1.46 1.63 5 0.00 Phi 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 25.0 35.0 35.0 35.0 35.0 45.0 45.0 176.32 215.03 258.35 302.77 Weight 201.18 1922.21 2894.40 4045.99 4876.85 5811.38 1297.70 7660.58 8653.68 11284.86 12603.85 13063.62 14102.05 5230.87 4968.66 4576.15 4554.20 4544.07 4546.57 PoreWater Force 0.00 0.00 0.00 0.00 0.00 0.00 13.42 468.52 1118.70 2001.16 2739.44 3126.45 3692.52 801.00 0.00 183.54 223.43 267.26 311.47 Normal Stress 58.78 318.46 646.02 904.54 1178.01 1404.34 1547.51 1765.46 2167.06 2365.61 2669.79 2999.26 3251.33 2755.84 2670.24 16 201.50 93.00 0.94 17 204.15 96.61 0.94 18 206.81 155.73 0.93 19 210.91 163.17 0.93 20 215.01 137.44 0.93 21 218.40 136.03 0.93 22 221.80 64.96 0.93 23 223.43 168.16 0.94 24 227.71 164.77 0.94 25 231.99 163.23 0.94 26 236.34 158.57 0.94 27 240.69 91.79 0.95 28 243.27 107.75 0.95 29 246.38 104.79 0.95 30 249.48 59.41 0.96 31 251.29 41.23 1.01 32 252.56 91.51 1.01 33 255.46 88.45 1.01 34 258.35 27.60 1.00 35 259.28 75.10 1.00 36 261.86 72.29 1.00 37 264.44 75.84 1.00 26.3 26.3 23.0 23.0 19.7 19.7 19.7 16.4 16.4 13.2 13.2 9.9 9.9 9.9 6.6 6.6 6.6 6.6 3.3 3.3 3.3 3.3 2.65 2.65 4.10 4.10 3.39 3.39 1.63 4.28 4.28 4.35 4.35 2.58 3.11 3.11 1.80 1.27 2.90 2.90 0.93 2.58 2.58 2.82 2.96 2.96 4.45 4.45 3.61 3.61 1.73 4.46 4.46 4.46 4.46 2.62 3.15 3.15 1.82 1.28 2.91 2.91 0.93 2.59 2.59 2.83 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 2 10.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10475.56 10888.21 17563.02 18413.54 15554.60 15476.25 7409.41 19179.31 18788.83 18609.62 18074.38 10459.27 12288.09 11973.68 6796.79 4718.60 10471.75 10123.80 3159.46 8619.86 8345.28 8783.69 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 53.33 159.89 134.63 109.33 292.42 353.43 123.67 361.60 385.87 449.77 3310.48 3440.97 3676.45 3854.57 4021.93 4002.04 3981.91 4018.70 3937.02 3924.62 3811.56 3794.12 3705.37 3612.50 3608.15 3639.82 3552.89 3432.71 3382.21 3306.43 3200.14 3078.50 38 1.00 39 1.00 40 1.00 41 1.00 42 1.01 43 1.01 44 1.01 45 1.09 46 1.09 47 1.13 48 1.13 267.26 271.73 276.19 112.47 102.91 92.66 0.1 4.46 0.1 -3.2 280.65 r 82.00 -3.2 285.10 70.46 -6.5 289.54 58.77 -6.5 293.97 48.86 -9.8 298.67 15.37 -9.8 300.53 15.51 -9.8 302.77 20.20 -13.0 307.12 6.73 -13.0 X -S Area: 3830.27 4.46 4.46 4.46 4.44 4.44 4.70 1.86 2.24 4.35 4.35 4.46 4.46 4.46 4.46 4.46 4.46 4.77 1.89 2.27 4.46 4.46 Path Length: 169.63 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 3 1000.00 2 10.00 2 10.00 2 10.00 2 10.00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 35.0 35.0 35.0 35.0 X -S Weight: 13030.13 11928.20 10742.58 9507.51 8167.86 6809.00 5653.33 1771.79 1783.42 2322.63 774.30 437281.66 733.49 734.71 700.59 630.67 525.54 384.90 215.70 18.86 0.00 0.00 0.00 2918.42 2671.64 2441.43 2164.33 1904.57 1598.19 1298.62 1020.82 854.11 588.21 197.03 Reclamation Conditions J&T Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm Pit File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS2-Reclamation.gmf Processed: 27 Feb 2024 09:51:39 DATA: Analysis 1 - Slope Stability - Case SS -2 Reclamation Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (20 profiles) Profile: 1 (9 points) Material beneath: 6 - Clay 0.00 4618.10 4610.28 182.26 4614.99 Profile: 2 (3 points) 241.50 4607.18 Profile: 3 (2 points) 0.00 4606.18 Profile: 4 (3 points) 241.50 4606.18 Profile: 5 (2 points) 238.50 4607.18 Profile: 6 (2 points) 0.00 4590.00 Profile: 7 (3 points) 241.50 4590.00 Profile: 8 (2 points) 0.00 4584.18 Profile: 9 (3 points) 241.50 4584.18 Profile: 10 (2 points) 0.00 4581.18 Profile: 11 (4 points) 241.50 4581.18 Profile: 12 (2 points) 0.00 4579.18 Profile: 13 (3 points) 241.50 4579.18 Profile: 14 (2 points) 0.00 4549.68 Profile: 15 (3 points) 241.50 4549.68 Profile: 16 (2 points) 0.00 4548.18 Profile: 17 (3 points) 241.50 4548.18 Profile: 18 (4 points) 0.00 4532.87 Profile: 19 (5 points) 241.50 4531.61 4526.00 Profile: 20 (9 points) 0.00 4530.87 4529.61 408.47 4529.98 57.07 196.20 Material beneath: 255.01 Material beneath: 238.50 Material beneath: 256.17 Material beneath: 5 - Slurry 241.50 4607.18 Material beneath: 6 - Clay 238.50 4590.00 Material beneath: 6 - Clay 288.16 4590.00 Material beneath: 2 - Sand 238.50 4584.18 Material beneath: 2 - Sand 300.16 4584.18 Material beneath: 6 - Clay 238.50 4581.18 Material beneath: 6 - Clay 300.16 4581.18 Material beneath: 2 - Sand 238.50 4579.18 Material beneath: 2 - Sand 310.15 4579.18 Material beneath: 6 - Clay 238.50 4549.68 Material beneath: 6 - Clay 369.13 4549.68 Material beneath: 2 - Sand 238.50 4548.18 Material beneath: 2 - Sand 372.13 4548.18 4618.10 156.63 4614.14 200.00 6 - Clay 4606.76 613.33 2 - Sand and Gravel 4606.18 2 - Sand and Gravel 4606.18 288.16 Wall and and and and 300.16 Gravel Gravel 306.16 306.16 Gravel Gravel 369.13 372.13 and Gravel and Gravel 408.47 4617.39 4612.45 4527.04 4590.18 4584.18 4581.18 4581.18 4549.68 4548.18 4529.98 Material beneath: 3 - Weathered Claystone Bedrock 60.58 4532.87 190.93 4531.60 Material beneath: 3 - Weathered Claystone Bedrock 408.47 4529.98 472.67 4530.14 Material beneath: 4 - Stable Claystone Bedrock 60.58 4530.87 190.93 472.67 4530.14 4529.60 613.33 4527.04 166.52 238.50 4610.32 173.33 4607.18 310.15 4579.18 238.50 4531.61 613.33 4527.04 238.50 4529.61 700.00 4526.00 700.00 241.50 Slope Surface (13 points) 0.00 4618.10 4610.28 182.26 4614.99 4607.18 255.01 4606.76 Phreatic Surface (6 points) 0.00 4527.04 700.00 Failure Surface 57.07 196.20 613.33 4595.18 238.50 4526.00 4618.10 4614.14 4527.04 156.63 200.00 700.00 4595.18 241.50 4617.39 4612.45 4526.00 166.52 238.50 4592.18 288.16 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 196.20 YL: 4614.14 XR: 613.33 YR: 4527.04 Centre: XC: 583.50 YC: 5426.55 Radius: R: 900.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 900.00 Trial positions within range: 20 20 50 as -a as a a a a a a - RESULTS: Analysis 1 - Slope Stability - Case SS -2 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: 3.059 Analysis Summary There were: 15957 successful analyses from a total of 20001 trial failure surfaces 4044 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.63 4-- - 4610.32 173.33 4607.18 241.50 4590.18 613.33 -a Negative normal stresses exist on the base of one or more slices; examine slice data and consult the GALENA Help utility Test Factor is less than 0.2 lower limit for one or more slices; examine slice data and consult the GALENA Help utility Results Summary - Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 X -Left 200.15 200.15 200.15 200.15 200.15 200.15 200.15 200.15 200.15 200.15 200.15 200.15 200.15 200.15 201.20 200.15 200.15 200.15 200.15 201.20 200.15 200.15 200.15 201.20 200.15 201.20 200.15 201.20 200.15 199.09 200.15 201.20 201.20 201.20 201.20 199.62 200.15 Y -Left 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.29 4612.43 4612.43 4612.43 4612.43 4612.29 4612.43 4612.43 4612.43 4612.29 4612.43 4612.29 4612.43 4612.29 4612.43 4612.85 4612.43 4612.29 4612.29 4612.29 4612.29 4612.62 4612.43 X -Right 610.44 609.91 608.33 609.91 609.38 610.96 611.49 609.38 609.38 610.44 610.96 608.86 608.86 608.86 609.91 609.91 610.44 608.33 608.33 610.96 612.01 608.33 609.38 609.38 609.91 610.44 611.49 610.96 608.86 610.44 609.38 608.86 608.33 609.38 609.91 610.44 608.33 Y -Right 4527.68 4527.80 4528.15 4527.80 4527.92 4527.57 4527.45 4527.92 4527.92 4527.68 4527.57 4528.04 4528.04 4528.04 4527.80 4527.80 4527.68 4528.15 4528.15 4527.57 4527.33 4528.15 4527.92 4527.92 4527.80 4527.68 4527.45 4527.57 4528.04 4527.68 4527.92 4528.04 4528.15 4527.92 4527.80 4527.68 4528.15 X -Centre 599.50 595.42 587.00 599.23 591.35 603.57 607.64 595.15 598.96 603.30 607.37 591.08 594.88 598.69 596.13 603.03 607.10 594.61 590.81 600.48 611.70 598.42 602.76 595.86 606.82 600.21 611.43 604.28 602.49 599.40 606.55 595.59 587.70 592.05 599.94 599.40 602.22 Y -Centre 5510.28 5491.98 5455.46 5510.40 5473.67 5528.56 5546.83 5492.10 5510.52 5528.68 5546.95 5473.79 5492.22 5510.64 5491.99 5528.80 5547.07 5492.34 5473.91 5510.16 5565.09 5510.76 5528.92 5492.11 5547.18 5510.28 5565.21 5528.56 5529.04 5510.28 5547.30 5492.23 5455.47 5473.68 5510.40 5510.28 5529.15 Radius 982.65 964.29 927.55 982.65 945.92 1001.02 1019.39 964.29 982.65 1001.02 1019.39 945.92 964.29 982.65 964.29 1001.02 1019.39 964.29 945.92 982.65 1037.76 982.65 1001.02 964.29 1019.39 982.65 1037.76 1001.02 1001.02 982.65 1019.39 964.29 927.55 945.92 982.65 982.65 1001.02 FoS 1.629 1.629 1.630 1.630 1.630 1.630 1.631 1.631 1.631 1.632 1.632 1.632 1.632 1.633 1.633 1.633 1.633 1.634 1.634 1.634 1.634 1.634 1.634 1.635 1.635 1.636 1.636 1.636 1.636 1.636 1.636 1.636 1.636 1.637 1.637 1.637 1.637 <-- Critical 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 200.15 201.20 200.15 200.67 200.67 201.20 200.67 200.67 200.15 199.62 200.67 199.62 200.67 201.20 201.20 199.62 199.09 201.20 200.15 198.57 200.15 199.62 200.67 200.67 198.57 198.04 199.09 199.09 200.67 199.62 199.62 197.52 200.15 199.09 199.09 199.62 201.20 200.67 200.15 198.57 201.20 199.62 200.67 199.62 199.09 4612.43 4612.29 4612.43 4612.36 4612.36 4612.29 4612.36 4612.36 4612.43 4612.62 4612.36 4612.62 4612.36 4612.29 4612.29 4612.62 4612.85 4612.29 4612.43 4613.09 4612.43 4612.62 4612.36 4612.36 4613.09 4613.32 4612.85 4612.85 4612.36 4612.62 4612.62 4613.56 4612.43 4612.85 4612.85 4612.62 4612.29 4612.36 4612.43 4613.09 4612.29 4612.62 4612.36 4612.62 4612.85 610.96 610.44 608.86 608.33 609.91 608.33 610.44 610.96 612.01 609.91 609.38 608.86 611.49 609.38 608.86 609.91 609.38 609.91 610.44 609.38 608.33 608.33 609.38 609.91 608.33 608.33 609.91 610.96 610.44 609.38 609.38 608.33 613.07 611.49 609.91 608.33 611.49 610.96 611.49 609.91 608.86 �( 609.38(} 608.86 610.96 608.86 4527.57 4527.68 4528.04 4528.15 4527.80 4528.15 4527.68 4527.57 4527.33 4527.80 4527.92 4528.04 4527.45 4527.92 4528.04 4527.80 4527.92 4527.80 4527.68 4527.92 4528.15 4528.15 4527.92 4527.80 4528.15 4528.15 4527.80 4527.57 4527.68 4527.92 4527.92 4528.15 4527.10 4527.45 4527.80 4528.15 4527.45 4527.57 4527.45 4527.80 4528.04 4527.92 4528.04 4527.57 4528.04 611.16 604.01 606.28 587.35 595.78 595.32 599.85 603.92 615.50 595.32 591.70 590.97 607.99 599.67 591.78 599.13 591.23 603.74 610.89 591.22 606.01 586.89 595.51 599.58 586.86 586.84 599.13 603.48 603.65 591.24 595.05 586.82 623.62 607.55 595.31 590.70 608.35 607.72 615.23 595.31 599.40 598.86 591.43 603.47 590.96 5565.32 5528.68 5547.42 5455.47 5491.98 5492.35 5510.28 5528.56 5583.45 5491.98 5473.67 5473.78 5546.83 5510.52 5473.80 5510.40 5473.66 5528.80 5565.44 5473.66 5547.54 5455.46 5492.10 5510.40 5455.45 5455.45 5510.40 5528.56 5528.68 5473.66 5492.10 5455.45 5619.90 5546.83 5491.98 5473.91 5546.83 5546.95 5583.57 5491.98 5510.64 5510.52 5473.79 5528.56 5473.78 1037.76 1001.02 1019.39 927.55 964.29 964.29 982.65 1001.02 1056.12 964.29 945.92 945.92 1019.39 982.65 945.92 982.65 945.92 1001.02 1037.76 945.92 1019.39 927.55 964.29 982.65 927.55 927.55 982.65 1001.02 1001.02 945.92 964.29 927.55 1092.86 1019.39 964.29 945.92 1019.39 1019.39 1056.12 964.29 982.65 982.65 945.92 1001.02 945.92 1.637 1.637 1.637 1.638 1.638 1.638 1.638 1.638 1.638 1.638 1.638 1.638 1.638 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.639 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 1.640 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 201.20 199.09 198.57 200.15 199.62 201.20 200.67 196.99 200.67 199.62 199.09 199.09 200.15 198.57 200.67 200.15 199.62 4612.29 4612.85 4613.09 4612.43 4612.62 4612.29 4612.36 4613.79 4612.36 4612.62 4612.85 4612.85 4612.43 4613.09 4612.36 4612.43 4612.62 Critical Failure Surface (circle 1) 609.38 612.01 608.86 609.91 611.49 608.33 608.86 608.33 609.38 612.01 609.38 610.44 612.54 610.96 609.91 612.54 608.86 Intersects: XL: 200.15 YL: Centre: XC: 599.50 YC: Generated failure surface: (20 points) 4612.43 220.55 200.15 4580.03 304.00 4550.25 411.62 4532.72 521.64 4527.68 4573.11 4545.75 4530.71 325.26 433.47 543.80 4527.92 4527.33 4528.04 4527.80 4527.45 4528.15 4528.04 4528.15 4527.92 4527.33 4527.92 4527. 68 4527.22 4527.57 4527.80 4527.22 4528.04 4612.43 5510.28 4603.63 4566.67 4541.75 4529.20 XR: 241.15 346.67 455.41 566.00 603.47 611.63 590.95 610.62 607.54 591.52 595.24 586.80 599.31 611.61 598.86 603.21 619.56 603.48 603.38 623.35 594.78 5528.92 5565.09 5473.78 5565.56 5546.83 5473.92 5492.22 5455.45 5510.52 5565.09 5510.52 5528.68 5601.68 5528.56 5528.80 5620.02 5492.22 610.44 YR: Radius: R: 4595.29 4560.71 4538.24 4528.19 Slice Geometry and Properties - Critical Failure Surface (circle 1, 46 slices) Slice Test Factor 1 3.51 2 0.97 3 0.92 X -Left 200.00 207.39 214.64 X Area 7.72 23.18 30.37 Angle -89.9 23.3 23.3 Base Width Length Matl Cohesion 7.39 4609.46 6 50.00 7.25 7.89 6 50.00 5.91 6.44 2 10.00 Phi 25.0 25.0 35.0 1001.02 1037.76 945.92 1037.76 1019.39 945.92 964.29 927.55 982.65 1037.76 982.65 1001.02 1074.49 1001.02 1001.02 1092.86 964.29 4527.68 982.65 261.93 368.20 477.43 588.22 Weight 772.47 2318.28 3150.33 1.640 1.640 1.640 1.640 1.640 1.640 1.641 1.641 1.641 1.641 1.641 1.641 1.641 1.641 1.641 1.641 1.641 4587.42 4555.23 4535.23 4527.69 PoreWater Force 0.00 0.00 0.00 282.88 389.86 499.51 610.44 Normal Stress -108.42 273.01 447.21 4 220.55 0.92 5 229.53 0.92 6 238.50 0.86 7 241.15 0.92 8 250.37 0.92 9 255.01 0.96 10 261.93 0.96 11 271.12 0.92 12 279.62 0.96 13 282.88 0.96 14 285.47 0.92 15 288.16 0.92 16 300.16 0.92 17 304.00 0.92 18 306.16 0.92 19 310.15 0.92 20 317.71 0.92 21 325.26 0.93 22 335.96 0.93 23 346.67 0.96 24 357.43 0.96 25 368.20 0.96 64.70 86.28 30.06 124.56 73.76 119.37 169.08 166.14 66.30 53.47 56.39 260.62 86.50 49.44 92.13 177.96 182.55 265.05 271.46 278.16 281.83 285.68 22.0 22.0 22.0 20.7 20.7 20.7 19.4 19.4 19.4 18.1 18.1 18.1 18.2 16.9 16.9 16.9 16.9 15.6 15.6 14.3 14.3 13.0 8.97 9.68 2 8.97 9.68 2 2.65 2.86 5 9.23 9.87 2 4.64 4.96 2 6.92 7.40 6 9.19 9.75 6 8.50 9.01 2 3.26 3.46 6 2.59 2.72 6 2.69 2.83 2 12.00 12.63 2 3.84 4.04 2 2.16 2.26 2 3.99 4.17 2 7.56 7.89 2 7.56 7.89 2 10.70 11.11 2 10.70 11.11 2 10.77 11.11 6 10.77 11.11 6 10.83 11.11 6 10.00 10.00 0.00 10.00 10.00 50.00 50.00 10.00 50.00 50.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 50.00 50.00 50.00 35.0 35.0 45.0 35.0 35.0 25.0 25.0 35.0 25.0 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 25.0 25.0 25.0 7058.07 9704.38 3005.64 14204.76 8490.92 13779.14 19156.08 18670.19 7437.65 5965.27 6276.65 29398.48 9871.04 5628.06 10516.44 20319.96 20702.99 29801.09 30206.14 30794.32 31265.57 31751.30 0.00 0.00 0.00 0.00 240.90 1254.72 3226.44 4526.12 2131.70 1825.92 2032.84 9995.11 3461.08 1992.23 3759.40 7428.07 7832.48 11620.15 12245.51 12782.20 13229.71 13588.94 667.76 918.92 909.15 1322.04 1579.95 1803.09 1913.37 1971.72 2116.90 2156.02 2130.36 2243.25 2359.92 2400.23 2434.28 2486.28 2537.09 2597.04 2636.83 2736.63 2780.16 2820.34 26 0.96 27 0.96 28 0.96 29 0.97 30 0.97 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 40 0.98 41 0.99 42 0.99 43 0.99 44 0.99 45 1.00 46 1.00 379.03 389.86 400.74 411.62 422.54 433.47 444.44 455.41 466.42 477.43 488.47 499.51 510.57 521.64 532.72 543.80 554.90 566.00 577.11 588.22 599.11 286.59 287.52 285.64 283.60 278.89 273.85 266.31 258.21 247.82 236.68 223.42 209.25 193.13 175.92 156.97 136.76 114.96 91.81 67.18 40.63 14.24 13.0 11.7 11.7 10.4 10.4 9.1 9.1 7.8 7.8 6.5 6.5 5.2 5.2 3.9 3.9 2.6 2.6 1.3 1.3 0.0 0.0 10.83 10.88 10.88 10.93 10.93 10.97 10.97 11.01 11.01 11.04 11.04 11.06 11.06 11.08 11.08 11.10 11.10 11.11 11.11 10.90 11.32 X -S Area: 7432.17 Path Length: 5023.75 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 31905.58 32058.03 31891.43 31703.58 31212.47 30679.97 29864.23 28981.88 27837.83 26607.26 25134.17 23555.50 21753.56 19825.86 17697.69 15426.39 12970.88 10361.62 7581.22 4581.36 1597.05 X -S Weight: 833472.88 13859.54 14041.47 14135.03 14139.65 14055.48 13883.11 13621.68 13271.41 12832.45 12305.68 11689.60 10986.09 10193.29 9312.61 8344.17 7287.37 6143.18 4911.12 3591.63 2156.72 717.80 2835.19 2846.51 2832.51 2814.62 2771.52 2724.09 2651.98 2574.70 2473.18 2365.89 2234.90 2097.28 1936.75 1768.42 1578.42 1379.15 1159.43 929.00 679.52 420.36 141.06 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Ogilvy River Farm Pit File: P:\22032 Todd Bean Gravel Property\Slope Stability\Galena\2024\O.R.F. Pit-SS2-EQ-Reclamation.gmf Processed: 27 Feb 2024 12:38:13 DATA: Analysis 1 - Slope Stability - Case SS -2 Reclamation Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden 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) - Weathered Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 1000.00 0.0 110.00 Auto Saturated: 1000.00 0.0 120.00 Auto Material: 4 (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: 5 (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 Material: 6 (Mohr -Coulomb Isotropic) - Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (20 profiles) Profile: 1 (9 points) Material beneath: 6 - Clay 0.00 4618.10 4610.28 182.26 4614.99 Profile: 2 (3 points) 241.50 4607.18 Profile: 3 (2 points) 0.00 4606.18 Profile: 4 (3 points) 241.50 4606.18 Profile: 5 (2 points) 238.50 4607.18 Profile: 6 (2 points) 0.00 4590.00 Profile: 7 (3 points) 241.50 4590.00 Profile: 8 (2 points) 0.00 4584.18 Profile: 9 (3 points) 241.50 4584.18 Profile: 10 (2 points) 0.00 4581.18 Profile: 11 (4 points) 241.50 4581.18 Profile: 12 (2 points) 0.00 4579.18 Profile: 13 (3 points) 241.50 4579.18 Profile: 14 (2 points) 0.00 4549.68 Profile: 15 (3 points) 241.50 4549.68 Profile: 16 (2 points) 0.00 4548.18 Profile: 17 (3 points) 241.50 4548.18 Profile: 18 (4 points) 0.00 4532.87 Profile: 19 (5 points) 241.50 4531.61 4526.00 Profile: 20 (9 points) 0.00 4530.87 4529.61 408.47 4529.98 57.07 4618.10 196.20 4614.14 Material beneath: 6 - Clay 255.01 4606.76 613.33 Material beneath: 2 - Sand and Gravel 238.50 4606.18 Material beneath: 2 - Sand and Gravel 256.17 4606.18 288.16 Material beneath: 5 - Slurry Wall 241.50 4607.18 Material beneath: 6 - Clay 238.50 4590.00 Material beneath: 6 - Clay 288.16 4590.00 Material beneath: 2 - Sand 238.50 4584.18 Material beneath: 2 - Sand 300.16 4584.18 Material beneath: 6 - Clay 238.50 4581.18 Material beneath: 6 Clay 300.16 4581.18 Material beneath: 2 - Sand 238.50 4579.18 Material beneath: 2 - Sand 310.15 4579.18 Material beneath: 6 - Clay 238.50 4549.68 Material beneath: 6 - Clay 369.13 4549.68 Material beneath: 2 - Sand 238.50 4548.18 Material beneath: 2 - Sand 156.63 200.00 300.16 and Gravel and Gravel 306.16 306.16 and Gravel and Gravel 369.13 372.13 and Gravel and 372.13 4548.18 408.47 Material beneath: 3 - Weathered Claystone 60.58 4532.87 190.93 Material beneath: 3 - Weathered Claystone 408.47 4529.98 472.67 Gravel 4617.39 4612.45 4527.04 4590.18 4584.18 4581.18 4581.18 4549.68 4548.18 4529.98 Bedrock 4531.60 Bedrock 4530.14 Material beneath: 4 - Stable Claystone Bedrock 60.58 4530.87 190.93 4529.60 472.67 4530.14 613.33 4527.04 166.52 4610.32 173.33 238.50 4607.18 310.15 4579.18 238.50 4531.61 613.33 4527.04 238.50 4529.61 700.00 4526.00 700.00 241.50 Slope Surface (13 points) 0.00 4618.10 4610.28 182.26 4614.99 4607.18 255.01 4606.76 Phreatic Surface (7 points) 0.00 4549.68 613.33 Failure Surface 57.07 196.20 613.33 4595.18 238.50 4527.04 4618.10 4614.14 4527.04 156.63 200.00 700.00 4595.18 241.50 700.00 4526.00 4617.39 4612.45 4526.00 166.52 238.50 4592.18 338.50 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 196.20 YL: 4614.14 XR: 613.33 YR: 4527.04 Centre: XC: 583.50 YC: 5426.55 Radius: R: 900.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.063 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 900.00 Trial positions within range: 20 20 50 a a a a - - a - a a -- a - RESULTS: Analysis 1 - Slope Stability - Case SS -2 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: 2.679 Analysis Summary There were: 15978 successful analyses from a total of 20001 trial failure surfaces 4023 analyses terminated due to unacceptable geometry 4610.32 173.33 4607.18 241.50 4565.00 511.59 a a a - Critical (minimum) Factor of Safety: 1.52 Negative normal stresses exist on the base of one or more slices; examine slice data and consult the GALENA Help utility Test Factor is less than 0.2 lower limit for one or more slices; examine slice data and consult the GALENA Help utility Results Summary -- Lowest 99 Factor of Safety circles Circle 1 Surface 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 X -Left 200.15 200.15 200.15 200.15 200.15 200.15 200.15 201.20 200.15 200.15 200.15 200.67 198.57 198.04 200.15 201.20 199.62 197.52 199.09 201.20 198.57 196.99 200.15 199.09 201.20 200.15 201.20 201.20 195.41 200.15 196.46 200.15 200.67 194.88 Y -Left 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.43 4612.29 4612.43 4612.43 4612.43 4612.36 4613.09 4613.32 4612.43 4612.29 4612.62 4613.56 4612.85 4612.29 4613.09 4613.79 4612.43 4612.85 4612.29 4612.43 4612.29 4612.29 4614.19 4612.43 4614.02 4612.43 4612.36 4614.22 X -Right 608.33 609.91 610.44 610.96 609.38 609.38 609.91 609.91 610.44 608.86 608.86 608.33 608.33 608.33 609.38 610.44 608.33 608.33 609.38 609.38 609.38 608.33 611.49 610.44 610.96 608.33 608.33 609.38 608.33 608.33 608.33 609.91 609.38 608.33 Y -Right 4528.15 4527.80 4527.68 4527.57 4527.92 4527.92 4527.80 4527.80 4527.68 4528.04 4528.04 4528.15 4528.15 4528.15 4527.92 4527.68 4528.15 4528.15 4527.92 4527.92 4527.92 4528.15 4527.45 4527.68 4527.57 4528.15 4528.15 4527.92 4528.15 4528.15 4528.15 4527.80 4527.92 4528.15 X --Centre 587.00 595.42 599.50 603.57 591.35 595.15 599.23 596.13 603.30 591.08 594.88 587.35 586.86 586.84 598.96 600.21 586.89 586.82 591.23 595.86 591.22 586.80 607.64 599.40 600.48 590.81 587.70 592.05 586.12 594.61 586.78 603.03 591.70 585.68 Y -Centre 5455.46 5491.98 5510.28 5528.56 5473.67 5492.10 5510.40 5491.99 5528.68 5473.79 5492.22 5455.47 5455.45 5455.45 5510.52 5510.28 5455.46 5455.45 5473.66 5492.11 5473.66 5455.45 5546.83 5510.28 5510.16 5473.91 5455.47 5473.68 5455.44 5492.34 5455.45 5528.80 5473.67 5455.43 Radius 927.55 964.29 982.65 1001.02 945.92 964.29 982.65 964.29 1001.02 945.92 964.29 927.55 927.55 927.55 982.65 982.65 927.55 927.55 945.92 964.29 945.92 927.55 1019.39 982.65 982.65 945.92 927.55 945.92 927.55 964.29 927.55 1001.02 945.92 927.55 FoS 1.522 1.525 1.525 1.526 1.527 1.527 1.527 1.528 1.528 1.529 1.529 1.529 1.529 1.529 1.529 1.529 1.530 1.530 1.530 1.530 1.530 1.530 1.530 1.530 1.530 1.530 1.531 1.531 1.531 1.531 1.531 1.531 1.531 1.531 <-- Critical 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 200.15 199.62 199.62 199.62 195.94 199.09 200.67 201.20 201.20 200.15 199.09 201.20 198.57 199.62 200.15 200.15 195.41 200.67 200.67 199.62 199.62 201.20 200.67 199.09 200.15 194.88 201.20 195.41 200.15 195.94 201.20 199.09 194.36 199.62 198.57 194.88 199.09 198.57 200.67 195.94 201.20 193.83 195.41 199.62 200.67 4612.43 4612.62 4612.62 4612.62 4614.16 4612.85 4612.36 4612.29 4612.29 4612.43 4612.85 4612.29 4613.09 4612.62 4612.43 4612.43 4614.19 4612.36 4612.36 4612.62 4612.62 4612.29 4612.36 4612.85 4612.43 4614.22 4612.29 4614.19 4612.43 4614.16 4612.29 4612.85 4614.25 4612.62 4613.09 4614.22 4612.85 4613.09 4612.36 4614.16 4612.29 4614.28 4614.19 4612.62 4612.36 608.86 609.38 610.44 609.91 608.33 608.33 609.91 609.91 608.86 610.96 609.91 608.86 609.91 608.86 608.33 609.38 608.86 608.86 610.44 609.91 609.38 610.96 609.38 609.91 610.44 608.86 608.33 609.91 612.01 608.86 609.38 608.86 608.86 608.33 608.86 609.91 609.38 609.38 610.96 609.91 608.33 608.86 608.33 609.38 609.91 4528.04 4527.92 4527.68 4527.80 4528.15 4528.15 4527.80 4527.80 4528.04 4527.57 4527.80 4528.04 4527.80 4528.04 4528.15 4527.92 4528.04 4528.04 4527. 68 4527.80 4527.92 4527.57 4527.92 4527.80 4527.68 4528.04 4528.15 4527.80 4527.33 4528.04 4527.92 4528.04 4528.04 4528.15 4528.04 4527.80 4527.92 4527.92 4527.57 4527.80 4528.15 4528.04 4528.15 4527.92 4527.80 598.69 591.24 599.40 595.32 586.55 586.87 595.78 599.94 595.59 607.37 595.31 591.78 595.31 590.97 598.42 602.76 590.23 591.43 599.85 599.13 595.05 604.28 595.51 599.13 607.10 589.79 595.32 594.60 611.70 590.67 599.67 590.96 589.35 590.70 590.95 594.16 595.04 595.04 603.92 595.04 591.52 588.92 589.96 598.86 599.58 5510.64 5473.66 5510.28 5491.98 5455.45 5455.46 5491.98 5510.40 5492.23 5546.95 5491.98 5473.80 5491.98 5473.78 5510.76 5528.92 5473.77 5473.79 5510.28 5510.40 5492.10 5528.56 5492.10 5510.40 5547.07 5473.76 5492.35 5491.97 5565.09 5473.78 5510.52 5473.78 5473.75 5473.91 5473.78 5491.96 5492.10 5492.10 5528.56 5491.97 5473.92 5473.74 5473.89 5510.52 5510.40 982.65 945.92 982.65 964.29 927.55 927.55 964.29 982.65 964.29 1019.39 964.29 945.92 964.29 945.92 982.65 1001.02 945.92 945.92 982.65 982.65 964.29 1001.02 964.29 982.65 1019.39 945.92 964.29 964.29 1037.76 945.92 982.65 945.92 945.92 945.92 945.92 964.29 964.29 964.29 1001.02 964.29 945.92 945.92 945.92 982.65 982.65 1.531 1.532 1.532 1.532 1.532 1.532 1.532 1.532 1.532 1.532 1.533 1.533 1.533 1.533 1.533 1.533 1.534 1.534 1.534 1.534 1.534 1.534 1.534 1.534 1.534 1.534 1.534 1.534 1.534 1.535 1.535 1.535 1.535 1.535 1.535 1.535 1.535 1.535 1.535 1.535 1.535 1.535 1.536 1.536 1.536 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 199.62 201.20 198.57 200.15 199.09 200.67 200.67 200.15 199.09 194.88 200.15 199.09 199.62 198.57 193.31 195.94 200.67 194.36 194.88 201.20 4612.62 4612.29 4613.09 4612.43 4612.85 4612.36 4612.36 4612.43 4612.85 4614.22 4612.43 4612.85 4612.62 4613.09 4614.32 4614.16 4612.36 4614.25 4614.22 4612.29 Critical Failure Surface (circle 1) 608.86 610.44 610.44 608.86 610.96 608.86 608.33 609.91 609.38 608.33 611.49 608.33 610.96 608.33 608.86 608.33 611.49 608.33 609.38 608.86 Intersects: XL: 200.15 YL: Centre: XC: 587.00 YC: Generated failure surface: (20 points) 200.15 4579.41 303.20 4549.37 410.29 4532.20 519.89 4528.15 4612.43 220.36 4572.39 4544.90 4530.34 324.35 432.06 541.97 4528.04 4527.68 4527.68 4528.04 4527.57 4528.04 4528.15 4527.80 4527.92 4528.15 4527.45 4528.15 4527.57 4528.15 4528.04 4528.15 4527.45 4528.15 4527.92 4528.04 4612.43 5455.46 4603.44 4565.87 4540.94 4529.00 XR: 240.79 345.64 453.92 564.08 594.78 604.01 599.39 602.49 603.48 595.24 591.16 606.82 598.86 589.52 611.43 590.69 603.47 590.68 588.48 590.40 607.99 589.09 593.89 599.40 5492.22 5528.68 5510.27 5529.04 5528.56 5492.22 5473.92 5547.18 5510.52 5473.88 5565.21 5473.91 5528.56 5473.91 5473.73 5473.90 5546.83 5473.88 5492.08 5510.64 608.33 YR: Radius: R: 4594.94 4559.86 4537.50 4528.19 Slice Geometry and Properties - Critical Failure Surface (circle 1, 49 slices) Slice Test Factor 1 3.28 2 0.96 X -Left 200.00 207.18 X -S Area Angle 7.60 -89.9 22.80 24.0 Base Width Length Matl Cohesion 7.18 4609.26 6 50.00 7.03 7.69 6 50.00 Phi 25.0 25.0 964.29 1001.02 982.65 1001.02 1001.02 964.29 945.92 1019.39 982.65 945.92 1037.76 945.92 1001.02 945.92 945.92 945.92 1019.39 945.92 964.29 982.65 4528.15 927.55 261.41 367.07 475.85 586.21 Weight 759.80 2280.33 1.536 1.536 1.536 1.536 1.536 1.536 1.536 1.536 1.536 1.536 1.536 1.536 1.536 1.537 1.537 1.537 1.537 1.537 1.537 1.537 4586.93 4554.36 4534.59 4527.91 PoreWater Force 0.00 0.00 282.22 388.62 497.84 608.33 Normal Stress -108.31 272.65 3 0.91 4 0.91 5 0.91 6 0.85 7 0.91 8 0.96 9 0.96 10 0.96 11 0.96 12 0.91 13 0.96 14 0.91 15 0.91 16 0.91 17 0.92 18 0.92 19 0.92 20 0.92 21 0.92 22 0.92 23 0.92 24 0.92 214.21 220.36 229.43 238.50 240.79 253.51 256.17 261.41 265.45 269.02 277.32 282.22 288.16 300.16 303.20 306.16 310.15 317.25 324.35 331.42 338.50 345.64 32.46 67.88 90.85 26.94 184.82 46.03 94.23 75.52 68.48 166.37 102.71 128.44 271.62 71.44 70.30 96.05 174.25 178.57 181.69 184.69 189.33 173.10 24.0 22.6 22.6 22.6 21.2 21.2 21.2 19.9 19.9 19.9 19.9 18.5 18.5 18.5 17.1 17.1 17.1 17.1 15.8 15.8 15.8 14.4 6.16 6.74 2 9.07 9.82 2 9.07 9.82 2 2.29 2.48 5 12.72 13.64 2 2.66 2.86 6 5.24 5.63 6 4.04 4.30 6 3.56 3.79 6 8.30 8.83 2 4.90 5.21 6 5.94 6.26 2 12.00 12.65 2 3.04 3.21 2 2.96 3.09 2 3.99 4.18 2 7.10 7.43 2 7.10 7.43 2 7.08 7.35 2 7.08 7.35 2 7.14 7.42 2 6.45 6.66 2 10.00 10.00 10.00 0.00 10.00 50.00 50.00 50.00 50.00 10.00 50.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 35.0 35.0 35.0 45.0 35.0 25.0 25.0 25.0 25.0 35.0 25.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 35.0 3372.23 7416.94 10227.88 2694.46 21097.09 5249.08 10592.51 8313.00 7424.32 17858.41 10898.65 13463.38 28741.11 7643.72 7497.23 10261.01 18601.33 18909.74 19075.38 19213.32 19593.43 17873.87 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 34.17 344.82 377.74 594.69 1586.53 484.25 490.91 687.85 1295.65 1387.98 1423.40 1430.35 1766.23 2097.76 452.32 684.21 944.40 923.72 1405.39 1749.97 1793.96 1841.28 1866.00 1848.01 1998. 67 1975.62 2090.49 2195.11 2238.53 2271.03 2315.07 2354.67 2406.29 2423.64 2455.02 2511.21 25 352.09 202.90 14.4 7.49 7.73 6 50.00 25.0 20989.00 3003.06 2618.10 0.96 26 359.58 204.82 14.4 7.49 7.73 6 50.00 25.0 21323.06 3611.50 2665.18 0.96 27 367.07 296.59 13.0 10.78 11.06 6 50.00 25.0 31095.08 6132.56 2723.73 0.96 28 377.85 297.63 13.0 10.78 11.06 6 50.00 25.0 31448.32 7195.93 2760.73 0.96 29 388.62 298.78 11.7 10.83 11.06 6 50.00 25.0 31800.78 8169.19 2798.29 0.96 30 399.46 296.89 11.7 10.83 11.06 6 50.00 25.0 31820.11 9051.27 2804.71 0.96 31 410.29 294.92 10.3 10.88 11.06 6 50.00 25.0 31819.50 9842.21 2810.55 0.96 32 421.18 290.09 10.3 10.88 11.06 6 50.00 25.0 31502.06 10542.55 2786.28 0.96 33 432.06 284.93 8.9 10.93 11.06 6 50.00 25.0 31141.47 11151.83 2760.14 0.97 34 442.99 277.14 8.9 10.93 11.06 6 50.00 25.0 30484.90 11669.88 2704.97 0.97 35 453.92 268.80 7.6 10.97 11.06 6 50.00 25.0 29762.04 12096.45 2646.43 0.97 36 464.88 258.02 7.6 10.97 11.06 6 50.00 25.0 28764.23 12432.50 2560.19 0.97 37 475.85 246.46 6.2 11.00 11.06 6 50.00 25.0 27675.12 12675.92 2468.89 0.97 38 486.85 232.69 6.2 11.00 11.06 6 50.00 25.0 26334.83 12828.71 2351.36 0.97 39 497.84 137.51 4.8 6.86 6.88 6 50.00 25.0 15671.83 8019.64 2255.14 0.98 40 504.70 131.03 4.8 6.86 6.88 6 50.00 25.0 15020.78 8008.14 2162.51 0.98 41 511.55 150.59 4.8 8.34 8.37 6 50.00 25.0 17317.35 9432.60 2051.14 0.98 42 519.89 183.27 3.5 11.04 11.06 6 50.00 25.0 21076.15 11459.76 1891.06 0.98 43 530.93 163.52 3.5 11.04 11.06 6 50.00 25.0 18804.90 10225.08 1687.10 0.98 44 541.97 142.47 2.1 11.05 11.06 6 50.00 25.0 16384.26 8898.56 1473.59 0.99 45 553.03 119.76 2.1 11.05 11.06 6 50.00 25.0 13772.19 7479.61 1238.43 0.99 46 564.08 95.64 0.7 11.06 11.06 6 50.00 25.0 10999.10 5970.04 992.27 1.00 47 1.00 48 1.00 49 1.00 575.15 586.21 597.27 X -S Area: 69.98 42.87 14.29 -__----- 0.7 - 0.6 - 0.6 11.06 11.06 11.06 11.06 6 50.00 25.0 8048.03 4368.64 11.06 6 50.00 25.0 4929.86 2675.82 11.06 6 50.00 25.0 1643.49 892.17 7707.76 Path Length: 5021.94 X -S Weight: 838686.69 725.97 446.80 149.21 APPENDIX D ill Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis W;\2022\Frederick\22.3058.A Todd Bean Gravel Evaluation\ACAD new template 6.13.22\TEMPLATL2013.dwg 1D/24/2022 1:50 PM W:\2022\Frederick\22.3058.A Todd Bean Gravel Evaluation\ACAD new template 6,11,22\TENP .AT ≥'0x3,Alwg 10/24/2022 2:24 PM 0 BACKGROUND IMAGE FROM GOOGLE EARTH LEGEND: B-1 BORING NUMBER AND ID APPROXIMATE LOCATION IMPROVEMENT BOUNDARY 500' 1,000' APPROXIMATE SCALE: 1 INCH = 500 FEET PROJECT NO: 22.3058 PROJECT NAME: Todd Bean Gravel Evaluation DRAWN BY: JBE CHECKED BY: KCV DWG DATE: 10.24.22 REV. DATE: FIGURE 2 Site Plan and Boring Locations Gessaw Enthrte .7 4 C Calicabigatb anT TECHNICAL SERVICES PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 BORING LOCATION See Figure 2 BORING ELEVATION Page 1 of 3 DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CM REP. J. Edwards DRILLING METHOD 8in. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 DEPTH (ft) SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) - - Water Level and Depth of Cave (ft) p ea 5 1- CLAY, sandy, moist, brown. i _= I f *M a .ts— •.j4 • •. •• : • i4. ' li•s`•+ • • «� • S. •• • �,Ao• • A.a• • • i% , •11.P * • r • • , ••• •% t *r •• • •• } • .,•it 0.1r J • • • A • .4% SAND, well graded, with gravel, gravels about 1" maximum, moist to wet, brown. — - a lay - —. _ - - - — 15 a--, _ z, -; — 2f- a a. _ al - - _ _ — -1 —30— _ - a - 17 L 1 es ,firri i r 6 �*• • •*•• t * • . �• • 1*!ri _ - — a . CLAY, sandy, wet, brown to gray. 23 '. . a -. ._ _ . a • a :— —; . •:,;# _.•• r •••.• L•• •• • I•,•••• •••• SAND, well graded, with gravel, gravels about 1" maximum, moist to wet, brown. 26 - �-- : o CLAY, sandy, wet, brown to gray. 28 i-- •� ► Q Y.+ i� ti CP. ' tedse • • . *di ti i+ PO SAND, well graded, gravelly, gravels about 1-2" maximum, wet, brown. - - ~ LEGEND V WATER LEVEL AT TIME OF DRILLING BULK SAMPLE Q# WATER LEVEL # DAYS AFTER DRILLING --►# DEPTH OF CAVE # DAYS AFTER DRILLING a�` crrii- -" "t SAREI INC. TECHNICAL IDEPTH OF REFUSAL 60,6O..notfwxr' -rn. �o,on.r)..144. ,.�.w �°..Wa,�f, $ € R VICE $ PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Todd Bean Gravel Evaluation See Figure 2 Dakota Drilling/Diedrich 120 81n. Diameter SSA NA PROJECT NUMBER BORING ELEVATION CMTTS REP. DATE STARTED DATE COMPLETED 22.3058 J. Edwards 10/21/2022 10/21/2022 B-1 Page 2 of 3 0. 0 SAMPLE m wELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 40 50 55 s 60 5" a • . s• *a 4 f�i� • 'i •i• G'••.6 • cter. • ▪ ••SM • • fq#, ast i• O••15 i ►e "f1 •*, o•• 46 #• •i Mort • ilb * 4$• *M i•t ` '• • $49 a. O`•'N ii •aa. • •i a• O . - i • • • • -_ 0 • 57.5 CLAY, sandy, wet, brown to gray. 59 • ''' SAND, gravelly, gravels about 3-4" maximum, wet, brown. • • I• • i • • e• • •• • • • i•; • ��IIYFFF 136 • Qi• •• • ��rrrrrr tun LEGEND WATER LEVEL AT TIME OF DRILLING .2# WATER LEVEI. # DAYS AFTER DRILLING -►# DEPTH OF CAVE # DAYS AFTER DRILLING 1 DEPTH OF REFUSAL •` BULK SAMPLE SARK lliC. t rtcckicat jai rr,n ( rr rc4w 11i :h (,,.,straw. crnr TECHNICAL SWIM PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 B-1 BORING DRI NG LOCATION COMPANY/RIG See Dakota Figure Drilling/Diedrich 2 120 BORING CMTTS ELEVATION REP, 3. Edwards DRILLING METHOD Sin, Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 Page 3 of 3 SAMPLE W O OC a m U is w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) .. G slIS L G t\t.r 75— - - 80- tegal t?'.l) r+d 4 II:Iraqi was ¢`sib 04,54 V• 4,a eAtt ..' 4 r / _ .lamj' 1e9 0o.'' � a'I 82.5 - - CLAYSTONE, very moist, brown to gray. 85-4 - 89 Boring terminated at 89 feet LEGEND y WATER LEVEL AT TIME OF DRILLING �� BULK SAMPLE 2# WATER LEVEL # DAYS AFTER DRILLING irl:Ii CITIiCM —# DEPTH OF CAVE # DAYS AF fER DRILLING ■ tDEPTH OF REFUSAL : (katifuktirstioffirrn !t ' SARE INC. A rarotwoi.wi tr .r, Gates E TECHNICAL E it V I C a s PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Todd Bean Gravel Evaluation See Figure 2 Dakota Drilling/Diedrich 120 8in. Diameter SSA NA PROJECT NUMBER BORING ELEVATION CMTTS REP. DATE STARTED DATE COMPLETED 22.3058 1 Edwards 10/21/2022 10/21/2022 B-2 Page 1 of 2 SAMPLE G ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) yg J O 5 3 � C 5 10 15- -2O ~251 �3 gal • - i * S I • a s a s s I • s / — 4 a • lam - • a :•4 • S .�I s a a — • - • . d a a \F a CLAY, sandy, moist, brown. 11 • • • •• ••• ♦ • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Is • • • • • • • • • • • • ♦ • • • •• • • • • • • • • • • • • • ••••• • • • • • • • • • • • • • ♦ • • • • t • alma ea t w S S $ �a a • S S. • • SAND, poorly graded, fine to medium grained, moist, brown. CLAY, sandy, wet, brown. 28 • • • • • SAND, well graded, gravelly, gravels about 1-2" maximum, wet, brown. • •• • 0. Sib • L GEND WATER LEVEL AT TIME OF DRILLING 77# WATER LEVEL # DAYS AFTER DRILLING -'# DEPTH OF CAVE # DAYS AFTER DRILLING Is DEPTH OF REFUSAL BULK SAMPLE n . d'.ewl,r�• &t f k nn A C M +r 1f r�rith Carban CmT TECHNICAL SERVICES B2 PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 Page . 2 of 2 BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CM REP. J. Edwards DRILLING METHOD Bin. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 SAMPLE Watts Level and Depth of Cave (ft) ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (It) O m o. (7 •. • d• • • O., .'. • 4 O � •.• • • S• d*. ill * . 1h, 00 l• • • a. /o 4## • ## • # Se # *• •0 .'- • Ili • •• se • • . • # • A% W • •. • a • • i • . 10 4i • • • • • • . • •# •� • . • • „! r• 67 r65- C fir C d tJ 1 C'S a. �" • • $• • I • 6. • be • r ; • • • . • • - ».. r •• . ►8•[ O , ..• . • • •# . •. 4 ili CLAYSTONE, very moist, brown to gray. 69 i Boring terminated at 69 feet LEGEND 7 WATER LEVEL AT TIME OF DRILLING BULK SAMPLE \J# WATER LEVEL # DAYS Al- I tR DRILLING rfa, MI i II CMT -0# DEPTH OF CAVE # DAYS AFTER DRILLING 0 gi tDEPTH OF REFUSAL !b!iJ + diciayn INC• A consedm iamittraetudist. TECHNICAL SERVICES B 3 PROJECT BORING LOCATION NAME Todd See Bean Figure Gravel 2 Evaluation PROJECT BORING NUMBER ELEVATION 22.3058 .` Page 1 of 2 DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMTTS REP. J. Edwards DRILLING METHOD 8in. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 sAMP Water Level and Depth of Cave (ft) G m U I t7 iELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) •r J 1 1 1 I o O1 I I CLAY, sandy, moist, brown. — • i • — ... - - 0 - q - • — IY► • • s - r effO a a • — • `� 4.:: �`- * �;i• edits. • ;4, • 4• C. • •• •*s• • i i ~ *• • • • •• ** •• •• • •• •• • • SAND, well graded, with gravel, gravels about 1" maximum, moist to wet, brown. 26 - - - - - r • • w ,. Y • i • • • • • • • 4 d 0 r,r •s• • O. • • • •• • •,S• • • • • • N • •4 I • S. 044 • ..• • • • • i•• i • It.t% •• • ••, Oil •+•I ••• 1 CLAY, sandy, wet, brown. - -.-.z...- f .� S �► a : 414 "04 ID ••' s • • 4(44. ;• % I •t*•1 4 1 • la• •'••• M • a#*• dr — SAND, well graded/ with gravel, gravels about 1" maximum, moist to wet, brown. LEGEND 'T WATER LEVEL AT TIME OF DRILLING BULK SAMPLE \# WATER LEVEL # DAYS AFTER DRILLING our ItU CMT -.# DEPTH OF CAVE # DAYS AFTER DRILLING S nom :i:PillSARFI, INC. TECHNICAL 1 DEPTH OF REFUSAL r rbRia,r,• A c te, oa+r,. ,,h.ri ciR„ ,v} SERVICES PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 B.3 BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMTTS REP. J. Edwards DRILLING METHOD 8in. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 Page 2 of 2 SAMPLE IF ILJ a C m = a. t7 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 2? b. 1373 a`ir gat • •• •• • •• i• •••• • •••••- • • •• i• •• • - 40 • 0,0•0 • • • • i*a* •i *• • ;1.6f ;. O. e - ;# 40 • to loll 0 lie it'll•o•lot •• • 44• •• Ic W 45 a Sc) Ici t q Yt*I t ¢. .4 4+ 14. SAND, gravelly, gravels about 2-3" maximum, wet, brown. - - nV toto.. Prove• .00 i\SI.*to Iv 4 r Pl F #Sse• 0,0 • • Q•i •' + s • - • • II ti it 1Stell i licit to •-60 e • • % * • 1 k ' 60 _ - - Si CLAYSTONE, very moist, brown to gray. Boring terminated at 64 feet LE END IF WATER LEVEL AT TIME OF DRILLING + BULK SAMPLE \7# WATER LEVEL # DAYS AFTER DRILLING • no Eri!' CMT_►# DEPTH OF CAVE # DAYS AFTER DRILLING !!th' INC TECHNICAL 1 DEPTH OF REFUSAL rm .o.tbrithren,r uar;r•c, b SERVICES Page B_4 1 of 3 PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CM REP. J. Edwards DRILLING METHOD Bin. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 SAM PLE •2 RI a 18 O y t ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (III) �.6 m J 9 Ia C7 CLAY, sandy, moist, brown. ti III aa a • I — A Cie*;• •0 !44 �• • • *r•S ii i •4• ,. • 0.• • o • lilt. _ SAND, well graded, with gravel, gravels about 1" maximum, moist to wet, brown. 11 CLAY, sandy, wet, gray. 19 - • _. ,� .. . _ Q W.15 _ \-20 K — �,e X25' a _ a — — . a �.— - -. — . . . - . . _ a I IIb •14. . • So se **lot • �, 0 ..I ♦t_es e 0 st s4 Q i� • O11•16 •�- •s',r ' �a et i i * • i v SAND, well graded, gravelly, gravels about 1-2" maximum, wet, brown. 31 a — (-30— — -.. R°' Si ii. r •• 1 VIii .. T SAND, well graded, gravelly, to GRAVEL, sandy, gravels about 2-4" maximum, wet, brown. LEGEND WATER LEVEL AT TIME OF DRILLING BULK SAMPLE Y# WATER LEVEL # DAYS AFTER DRILLING CMT —e.# DEPTH OF CAVE # DAYS AFTER DRILLING SARK INC. TECHNICAL tDEPTH OF REFUSAL Gialmot sa.ar.+orikate*1 •re4.,,e .'sri SERVICES NAME LOCATION SYSTEM COMPANY/RIG METHOD Todd See Dakota 8in. NA Bean Figure Drilling/Diedrich Diameter Gravel 2 SSA Evaluation 120 PROJECT BORING CMTTS DATE DATE 22.3058 J. Edwards 10/21/2022 10/21/2022 B-4 3 PROJECT BORING DRILLING DRILLING HAMMER NUMBER ELEVATION REP. Page 2 of STARTED COMPLETED S A M P LE •25 m Cii m to ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 4 - - _ • • . *At. .4 O .•- • • t• - 45 - • t a . *0.0 4:" • 1 - • w• - �• O "fret t • *40 • • 1-50 — _ • ib ••* • O •% • - 0 4 . 00 ;¢- fit ". • 0% - a +4 t 60 M • . • ' Q+ - • se • o�• — - es ..it • • • • e. •a• • o • • LEGEND WATER LEVEL AT OF DRILLING BULK SAMPLE ' TIME �# WATER LEVEL # DAYS DRILLING AFTER raions -►# DEPTH OF CAVE # DAYS AFTER DRILLINGbil rail It'll �� tDEPTH OF REFUSAL Aq. •± ar ilast isARE C�4, TECHNICAL SE R V I C e I INC. scr..,mh•ah PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Todd Bean Gravel Evaluation See Figure 2 Dakota Drilling/Diedrich 120 Bin. Diameter SSA NA PROJECT NUMBER BORING ELEVATION CMTTS REP. DATE STARTED DATE COMPLETED 22.3058 J. Edwards 10/21/2022 10/21/2022 B-4 Page 3 of 3 SAMPLE: 0 -7,- _80 _ a85 - MATERIAL DESCRIPTION DEPTH (Ft)' a CLAYSTONE, very moist, brown to gray. Boring terminated at 85 feet 85 LEGEND WATER LEVEL AT TIME OF DRILLING E# WATER LEVEL # DAYS AFTER DRILLING �# DEPTH OF CAVE # DAYS AFTER DRILLING t DEPTH OF REFUSAL BULK SAMPLE k4trc sa t tPguCfn d ('aa,am tf4 ! h rearm*, cm r TECHNICAL SERVICES PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 g5 BORING DRILLING LOCATION COMPANY/RIG See Dakota Figure Drilling/Diedrich 2 BORING 120 CMTTS ELEVATION REP. J. Edwards `" DRILLING METHOD 8in. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 Page 1 of 2 SAMPLE /1 La p W p F ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) M 4 11 O O "' — CLAY, sandy, moist, brown. 4 a. • I IS ITa e . .— r • Te• -i - _ _41 _• r� •�• * i'••r• o ,:• •. • • •• it i 44 •ili4 SAND , well graded, with gravel, gravels about 1" maximum, moist to wet, brown, - x--10 — ( " 4•• i• +• • es:: '— •••• •• • 4o * WI• i 01 40 • ** 12Is r +ter • s _. CLAY, sandy, to Sand, clayey, wet, gray. _ - —15 i Yt R 1 .m M • • • —20— _, • — s -e _-, 211 • a —s. — e25— - _ .s _ a -30 _ w r O ,• 6• •• 0. �, bib* M 9i • j"s • 's iipsAir kt3, till * *f to • • - •• • • • # i • • # • • • • • • • • et • SAND, well graded, gravelly, gravels about 1-2" maximum, wet, brown. — ... _ _ — _ _ a LEGEND IF WATER LEVEL AT TIME OF DRILLING BULK SAMPLE \# WATER LEVEL # DAYS AFTER DRILLING mos r_ re .Iel—►# DEPTH OF CAVE # DAYS AFTER DRILLING EIE ue • 'it; , INC. TECHNICAL IDEPTH OF REFUSAL It A r� „ ! e, , S I R VI C 1 5 PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 B-5 BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CM REP. J. Edwards DRILLING METHOD 8in. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 Page 2 of 2 - n SAMPLE W W p p m ) w a. w ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft)i lig 11 41 13 J w h. G -! -40 4cello _.•• • s*• O • �'*• r • • 1 °a. _ - - - -, O • .` .1 — - - —45-_ • #* 0• 0. .• So • • I• • • SAND, well graded, gravelly, gravels about 2-3" maximum, wet, brown. _ or 0 ¢• • e* 7 • •4 a • om# ,�.i - _50 _ ,' - - - - /-55 - _ —60- t• *'`' 'it �0 a • es • _• S esto 0:o 46.4 cif * , ° • 4. • • • _ SAND, gravelly, gravels about 3-4" maximum, wet, brown. - • iO°• • • • 63 CLAYSTONE, very moist, brown and gray. - 67 Boring terminated at 67 feet - LEGEND lir WATER LEVEL AT TIME OF DRILLING BULK SAMPLE V# WATER LEVEL # DAYS AFTER DRILLING - crirr MT -►# DEPTH OF CAVE # DAYS AFTER DRILLING - 1 �, ' O NC TECHNICAL tDEPTH OF REFUSAL c. it*.att•,,iu,nAisc°es $ E R VICE S B . Page 1 6 of 2 PROJECT BORING DRILLING LOCATION NAME COMPANY/RIG See Todd Dakota Bean Figure Drilling/Diedrich 2 Gravel Evaluation 120 PROJECT BORING CMTS ELEVATION REP. NUMBER 22.3058 1. Edwards DRILLING METHOD 8in. Diameter SSA DATE FARTED 10/21/2022 HAMMER SYSTEM NA DATECOMPLETED 10/21/2022 SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) pl he Id m _ r Mil • -. _ �y _ • _ 0 r 't CLAY, sandy, moist, brown. •♦•♦• ♦r, 5.. • •.' r♦♦*, ♦•♦ ♦• ♦.. .♦•♦ •♦ .•.•♦ ♦♦ ♦•♦ ♦♦♦ ♦♦ ♦ ♦ r • ♦♦♦ ♦♦ ♦ • ♦♦♦.•10 I . i . - - , SAND, poorly graded, with gravel, gravels about 1" maximum, moist to wet, brown. _ 5 - ._ as _ _10-. - _ —20- ♦ ♦0* 46 •;•:i ♦i• 411ri *♦ 40 ♦ ♦# %♦r i.* i i ♦♦# is • • • ••Set .*# i # S. • ♦ V♦ i! i • 4,.... i r •. . •0 •4• • #S• tett • 1 1 0. - _ - - SAND, well graded, with gravel, gravels about 1" maximum, moist to wet, brown. thin clay tense 17 21 - - - _— • CLAY, sandy, wet, brown. s a - -• - • a es s • M • .•23,5 ♦ ♦♦*i, . ♦:� # ## 441 *iii 44191;1 +g♦ sr #♦r ♦s ,:l ♦ 1+ :ail l y_• a # ,i #1 i " SAND, well graded, gravelly, gravels about 1-2" maximum, wet, brown.14: s — — — — _ w —30- — s - LEGEND V WATER LEVEL AT TIME OF DRILLING BULK SAMPLE ¶# WATER LEVEL # DAYS AFTER DRILLING CITIT —ID# DEPTH OF CAVE # DAYS AFTER DRILLING SAXE, INC. TECHNICAL tDEPTH OF REFUSAL t„ .rboom, wCst"ev . $tee ,C tw.. SERVICES B6 PROJECT NAME Todd Bean Gravel Evaluation PROJECT NUMBER 22.3058 '_ Page 2 of 2 BORING DRILLING LOCATION COMPANY/RIG See Dakota Figure Drilling/Diedrich 2 120 BORING CMTTS ELEVATION REP. J. Edwards DRILLING METHOD 8in. Diameter SSA DATE STARTED 10/21/2022 HAMMER SYSTEM NA DATE COMPLETED 10/21/2022 { DEPTH (ft) SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) ELEVATION O0 MATERIAL DESCRIPTION DEPTH (ft) DRIVE BULK _.. 1. -40- -�FO IIII k se petal+ 44•J. t o t+ 00 f; eti .4 , 04— .‘.,;i. 4O • • ,•• f • • 4* • • f 1 " 54. • a i- K.• — - ~ - - -_ - - -• 50- 55 - - r CLAYSTONE, very moist, gray. - - - - Boring terminated at 58 feet LEGEND V WATER LEVEL AT TIME OF DRILLING BULK SAMPLE \# WATER LEVEL # DAYS AFTER DRILLING 0-►# DEPTH OF CAVE # DAYS AFTER DRILLING ■� ■em - CITIT ��:a rl INC. TECHNICAL IDEPTH OF REFUSAL f T tss ..A c-.,i,i,vs, „ of o c,rta s SERVICES M W 'MI PROJECT NAME Todd Bean Property Monitor Wells PROJECT NUMBER 22.3058 BORING LOCATION 40.42351$°/-104.573160° BORING ELEVATION Page 1 of 3 DRILLING COMPANY/RIG Dakota Drilling/CME 55 CMTTS REP, J. Edwards DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/29/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/29/2023 BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) DEPTH (ft) p BULK ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft)1 WELL DIAGRAM ~i' -Concrete CLAY, sandy, moist, dark brown. • pad _ - = s with 3' steel - - - - o- stickup monument - :_ 3 -I 5- - _ 1 ((y1 14J - a- +•• 5s •# •• • * • + • • • • .4t ; ••M,• •*•41) ••4. �5• •#•% f ♦• • ••e*• 0% * 0 . • *-• ••' SAND, welt graded, gravelly, with cobbles, moist to wet, brown. •• •• • i • • t }•• t a • • • S. • •,�• #lir ••* Bentonite - - p._ 15 • • •#••• ♦ •i •• • *• ' • ¢• •• ; •. • a • •l ;t• • . • •• •• *# • • • * • • ti 0 *'• • • * • • 4D• * • • •• • w '• .•• 4 • • * • •# • *' ••• `.+t, •• • • ••* • tee • • •*• • 10/20 Silica / Sand - ,_ _ —20- — 25 •• 4.•` • • •' • * •, 4*. • i4 •• •• • t • • • • • • •# • •'1 •• •.• • *• • • • se S • # • • •* ••• • • • #«• '• • • +a.•* • •. • + * • * ;• S. •i •• •t • •r • •• •+ • •• •'• • # • ••• • • • . • I.• • • .•• • ,` ,• •* . • •. •, • • • • a. • •• • • • #`• .• • • • • • i,* • •• Natural cave-in sand pack to 16' — —30-60 - — -• .. • •�i •• •*+• • ; • s • • ;.• 041, *•4• s •• •,• • .;• '0• i A • fr ••••' • 41 s.ii• • e • • *5 %• • •i •• ♦1'w # • f :4.- • •.• • •• •• •• • • 0 •0 • * •• •; * • •• • •, • # f #y • •* • • •• • • ••i « *• • ••• •• + ♦ • •• •s• t *• •#• •* •*-♦• • ♦ • * •• •♦ • •• • • • # •'« • *• * • • • 2" S40 PVC Riser - — — LEGEND y WATER LEVEL AT TIME OF DRILLING ' SPLIT SPOON \# WATER LEVEL # DAYS AFTER DRILLING -# DEPTH OF CAVE # DAYS AFTER DRILLING t DEPTH OF REFUSAL SERVICES M W PROJECT BORING LOCATION NAME Todd Bean Property 40.423518°/-104.573160° Monitor Wells PROJECT BORING ELEVATION NUMBER 22.3058 - Page 2 of 3 DRILLING COMPANY/RIG Dakota Drilling/CME 55 CM I I S REP, J. Edwards DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/29/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/29/2023 BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) - — - , Water Level and Depth of Cave (ft) WELL DIAGRAM DRIVE Se m — — ' • .S 00 •• S. • #• 4P• 4w •• •#* • • *•** e9 ••* •a •• • i• .44 . a • • • * •t • • 'U • a ••• • +F.� #*#• •; •o%. *et i a ••R* • • •'••• sso • • ` 1* • .a '• t 14 ***# 4 • tip • i •• ••*' •S • t. • • S.•.. # 1 . • • 0 • •• �; •a • • • • •f i •i 0 04' • • •# • 41'. 0• 14 OHO •••041, •440 •• • • sly 46L!" .R •'•'•• • • •• .•,• ' •• • • •0 • • • •• • • • • *• • ••• • i • 0 # •a ** • t• .a: •• lIY • esti • #•• • . • 0. %•• St - • il *•0, •• 4 •S • � *froN `i•A •• • • 4 * • • .* . #•0 •• •• ••. *'•' •# # • •• • -2" S40 PVC 01" Slotted Screen I- a ` 1-� ,�rill 5 - - —^, * •,, • - i� !••�I • •*a •0 St • .5 # # liti •� 4• • *4. se:4 4O 50— i•► - - a r. S a# •i•• si • __ .r _ • 4 s • e1"„r •% 1• • /i ee it 1 ,. 4.s I f •., •* Y • i tilt '••a ' aOlt n- ? — s ..i ' - le 1"". 4...I•* kid. It !e4__ es 3 1 • — — - - — — — — "sea to 4# •Ir• kill • •• •• A* f • • hall a� •t •i ••, I• _� re. 0t a* I, i ii. 4. �i� •P•• •a. ,�• i • • • * 4 a• 0 LI • 'i t./ of *aa 0•M ► I 'lie _ *a •* sib 4� r*i * �. it, •a •a. Ft * •• • • N �• 4•e i�1 •• ea 'fir i• LEGEND V WATER LEVEL AT TIME OF DRILLING 0 SPLIT SPOON 77# WATER LEVEL # DAYS AFTER DRILLING —Db# DEPTH OF CAVE # DAYS AFTER DRILLING TEC''I CA L C1MTSERVICES 1 DEPTH OF REFUSAL PROJECT NAME Todd Bean Property Monitor Wells PROJECT NUMBER 22.3058 M Wim 1 Page 3 of 3 BORING DRILLING LOCATION COMPANY/RIG 40.423516°/-104.573160° Dakota Drilling/CME BORING 55 CMI ELEVATION I S REP, J. Edwards DRILLING METHOD 4.25in" Diameter HSA DATE STARTED 6/29/2023 HAMMER SYSi tM Rope & Cathead DATE COMPLETED 6/29/2023 'SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) g BLOW COUNT DRIVE BULK ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) WELL DIAGRAM iiii•!#i�•.iii * S � '' i 3 1 4••••• liiiiii ••••iii �!. ii• ii� !i�*i 4 ii*li* i •i;i* #•si• * i i*• !!i *• •** iii/ii #e et i+ ** ••: * a f*b #i ••i t• * #i i! •• « *se* •r • •�_• i • •# _i• • •• •• g•• •�'•• •• a-2 ••• l• !*• -\ ••st:.__ fir# • —75 — —\ ,#• �• " _` •• • •• ! R • • 'O.* • • •• * ••• • • •• • • S •,_ •• • • r ••• �••e ••• •• ill • Pr*: #' • I ' •• •• * • { '#• + •• e ##• • •• 4••� #• •0. ♦ #,•a • ••• �# 0•• •; —85 •• •• !• •••! • .- - • • • • !••••• * ! i • • • *•• r•• •• e #` ••• •# • •• • •• •# • • a* ' f• a #• 1' - r. lie • •� • • • *� • •• :•••• • •##+YID • . 0.• •• • • •7 • ! • • • # :6 IF_• _•#•.� •••4 . P... - - •• • • '- # ••�� ••• ••• • S. '• # • -• • I. • • * ti ._ • 1 !• •� #�.•• •4 • _0 044• • • a* mei ft • # • • • • • 0 # • a •r. • • i i •• •,* • •• • •• !• i#i I I•* • I. ... _ 4114. • 0 41i• _ ` j••• 0• - •s* i - ••* - •s • • I *• • •• • _ • ••4 r• `•• to - 56/12 •:• , +` • • �', 100 a ,. -100 Boring terminated at 100 feet LEGEND WATER LEVEL AT TIME OF DRILLING �� SPLIT SPOON \J# WATER LEVEL # DAYS AFTER DRILLING -►# DEPTH OF CAVE # DAYS AFTER DRILLING I DEPTH OF REFUSAL CM TECHNICAL SERVICES M W— Page 1 2 of 2 PROJECT NAME Todd Bean Property Monitor Wells PROJECT NUMBER 22.3058 BORING LOCATION 40.421645°/-104.564902° BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 55 CM I I S REP. K, McNally DRILLING METHOD 4.251n. Diameter HSA DATE STARTED 6/26/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/26/2023 DEPTH (ft) BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) WELL DIAGRAM DRIVE BULK - — 5 -' 10 .. rr - 15 =L _ —20 'cave-in —25-j a .. — CLAY, gravelly, with silt, moist, brown, 2 , Pitepai - Concrete pad with 3' steel stickup monument Bentonite - 2" 540 PVC Riser - - - - - - 'l ' • * ., I.•ts1 La �•• -i nip _toso *• • 1 a..? • I. t * a • a tli•c i• • i• � • a • a • ss •� �% • ib • R * - `moots e a •* e iy ea IV. Sett �• ; ; •. •. • •• Ile s•0 • a se • eir • •• • • • •f• lli •• • ***.• • • . • •* SAND, gravelly, to SAND, with gravel, moist, light brown to tan, fine to coarse sand. 20 ' ,,, � 7 ti } - SAND, clayey, with gravel, brown, wet, fine to coarse sand. 3t) •• •• • • 0.: •• • •et • •44 . • • 4 ,' . �* + • 4 • : ;. Natural — sand pack to 20' I. a r�"t• • CLAY, with fine sand, wet, gray. ••n ___ -^ . -- —Tti _—el � ee •;S to i f . . ! •-• - p ••4 afion g �at• . — __. _r LEGEND V WATER LEVEL AT TIME OF DRILLING H STANDARD PENETRATION TEST \# WATER LEVEL # DAYS AFTER DRILLING I MODIFIED CALIFORNIA SAMPLER -►# DEPTH OF CAVE # DAYS AFTER DRILLING TE C H N I CA L T DEPTH OF REFUSAL SERVICES i M W_ 2 Page 2 of 2 PROJECT BORING NAME LOCATION Todd 40.421645°/-104.564902° Bean Property Monitor Wells PROJECT BORING ELEVATION NUMBER 22.3058 DRILLING COMPANY/RIG Dakota Drilling/CME 55 CM REP. K. McNally DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/26/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/26/2023 DEPTH (ft) BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (It) I WELL DIAGRAM Water Level and Depth of Cave (ft) DRIVE I BULK 1 - - - - ��+ - 2" 540 PVC .01" Slotted Screen — %Cr • • • •• • 1.77.,:-.• Lass �' S. • • � !' - . . •i i •i i ••* • * a . - . mar— r • a • _ • • 1 • • a • a a • i• 1 #•' • • • i * ••* ..* r. — - — - - a w ,a L. U - a 5 _ Asa . Aims - • • Ommr am a. A• a r .. i ID a. ` i. •• 5 * •• ••• •i• — . - 4.—...• — - • s a a r, .- t . • r a O • i #• •• • . t -� • • •ii q • •• • i• * f I ••• •i * r- i• :s • _ a -; d i CC 55 - r • ' �� i .•• *•• I -. 4 a• ••. ;�:,1 • — — _..i ___ • 4 • • •- * • • -_. •• • ,�_ - T *• _ i `• -• • I - • — - • • • * • _ -- Vii* ••� ii •• _ • •* • •.• ` +* r i• •• s • •• • �- • .,i • * • • • f •• • 1• • Q • •• -_aa • • • •• r••s • • sue'- - a ••i -- •• •4• •4 • a - 'ii • -- ' - . - • - - • • ! *# •• •i • • • - •• -s. •.rM ♦ • • • • M • # s s . a t • • �� •,• i * * -a, - •• • • , ` r • • • • • • H _• * r • • • • • ; • • •: SILTSTONE, hard, moist, light brown, iron oxide staining. 6).4:. • • •• R •• • • •} • I. i►e ••• •} ii • • + • � •-' 50/8 + � siii •• � •s ••• rt - Boring terminated at 67 feet LEGEND i` WATER LEVEL AT TIME OF DRILLING 4 STANDARD PENETRATION TEST \# WATER LEVEL # DAYS AFTER DRILLING I MODIFIED CALIFORNIA SAMPLER ---►# DEPTH OF CAVE # DAYS AFTER DRILLING CMTTECHNICAL 1 DEPTH OF REFUSAL SERVICES ris M W-3 PROJECT BORING NAME LOCATION Todd 40.419102°/-104.569162° Bean Property Monitor Wells PROJECT BORING NUMBER ELEVATION 22.3058 Page 1 of 3 DRILLING COMPANY/RIG Dakota Drilling/Diedrich 50 CM REP. J. Edwards DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/27/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/27/2023 DEPTH (ft) BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH ( fq WELL DIAGRAM Watcr LtrvcJ and Depth of Cave (ft) W' BULK _ - - - A 5 !L _; a • s- .. . a .e r — • - - . _!� s' i- Concrete pad with 3' steel stickup monument Bentonite _ - - I. CLAY, sandy, moist, dark brown. 5 - 10/20 Silica Sand - Natural cave-in sand pack to 13' -2" S40 PVC Riser \n. • *.e— • •• ;;; ••: , • •'' • • 4•• • ,.it : •• •« 'a • t • : • •;• ,�• • •» 4•• . •• • »•�` •_ SAND, well graded, with gravel, wet, brown. ism A. "+ .41 ! ;•� *• ;� 4 , 1• • it . •. • #• 1 • •' • 1•�,, • * •, • •• ,••4 # 1•a t. 1• • e A • • •• 1 • • • ,� .- - i rti — x-15 _ - a .� za J �. —25— - -, _ h► a e e .-. - _ il `,' i.e.:* • • * •41 ,• •• ••• 4• a I • ••• • •• • i ••.% *• • •0 . • • :. •D• `• •;gil ipe• 4 ••01 iI. * i• • kZ �; !'`� � , M• •0 ••; r � 'r .• • • 0. •i 1 1*�i• ' * . • 4 -•, • ••� • • •4 •• • • { • 1 • • it •• . •••I • •i •••i •1 •04 r F •. 0 • et 64 g• _ate•• - - -a - . .. -. CLAY, sandy, wet, gray. i -.T _. — — —S .—ii 4 �� . _ SAND, gravelly, with cobbles, wet, brown. 1r '*s• ' „�.• • • •• •i i 4!* ••4111, • • • �•• • 0• •s s •• *••• •5' • 41•19.% 0 •• • 41414 • • si • 4141•# •,• . 0' 441 • • •41.41 tat• .•• •i • • •• 4144 .41 4141• so • .. •• r•:°• 0.0. • ••• I ••.4 •• •r • I 4� •i 1 1•* 4• • ; • •• 1 • • •* • ; 14••l • i• •• • ••*. . ;r •••1 el *••1 V� 0 • i � •• i a i +� ... i LEGEND { WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL # DAYS AFTER DRILLING -'# DEPTH OF CAVE # DAYS AFTER DRILLING T DEPTH OF REFUSAL cir TECHNICAL i SERVICES M W— 3 Page 2 of 3 PROJECT NAME Todd Bean Property Monitor Wells PROJECT NUMBER 22.3058 BORING LOCATION 40.419102°/-104.569162° BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 50 CMTTS REP. J. Edwards DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/27/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/27/2023 DEPTH (ft) BLOW COUNT SAMPLE ' GRAPHIC LOG WELL DIAGRAM ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (it) Water Level and Depth of Cave (ft) p he —r m - S _ _ 55 - '160 r•••# - -65- . I•••#d � ' • ±• ,0 w •;•* re *#i♦ i•'• • •It.• IP •I•' • ••#• i•!i • •••. to lire •.: • r• o•• D • ;•• M• •• •• k •L.• ••f• I0 416 0. •• *.'s• •#t• •;. :+ •••• •••••• • i• • •• i• *.#.• • 4• • • • •`* • •• • • # • #'• SC # • •• • • Me•y•� . .. ' •• ••y •• ••••i • i• • • r e • #. `, r• • •, i*•*• 1 • *• • • •• •• •• ' • #• i • ' • ••• I. +• # •* i t • *' •• • ••1 j • I . t ; ••♦•# 1 •• • •LEGEND - 2" 540 PVC .0 f'° Slotted Screen - - - -, = .. .- - z = - _ - 1 _ - _r - i •**•fit** ' ,. ., I• � � • `�i �• Ili 7.: * : *0 • 4O1 ow' • • F'r' • •••• ♦•. • I • # •• •• ® 4• t .#.••.• I 4i M•t• •• • • • i •• • +re ••• •r h 4! #i 4 • • •• • �► • • rri • .1 }•0• •# r; ••• •• ! • • • • rt#•+ •#• •• •• K. �••• •••, • • • • • M•# • • •• • ** • • •• •: •• • • M M • •• • : • • '* . S• #** r• • •a• :p : • • ♦ /• • .•• ••• •••. M • . #e. • • • • • ' 4. •® tot* • ••• ►• •• • •i a • • •# • •* • .• • _ �• • .e; _ . # • f• •• • 4•,•• •ft* •* •« .i• :* , * • ••• •• �+•. • • Irrr • • ••. • • • 3 •• #. V WATER LEVEL AT TIME OF DRILLING AL MODIFIED CALIFORNIA SAMPLER \J# WATER LEVEL # DAYS AFTER DRILLING -►# DEPTH I DEPTH OF CAVE OF REFUSAL # DAYS AFTER DRILLING TECHNICAL ICM SERVICES NI vv. 3 Page 3 of 3 PROJECT NAME Todd Bean Property Monitor Wells PROJECT NUMBER 22.3058 BORING LOCATION 40.419102°/-104.569162° BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 50 CM REP. J. Edwards DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/27/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/27/2023 DEPTH (ft) BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (f) WELL DIAGRAM a BULK ..- r75 —1 -` ' "1 .. _ _ — -80- _ _ -6.,,50/3 •• • • • •e i• • •*. ••_•94 i # • • i % rI on I • •••••4 ` • .+ • ! ••••% { •� •d • i •i • •1 i• •• •* ••o • 4 •• •tt •�• • . • 81+. i• • • • •i _ j• • I ± II • [47. •• filip• • D•• * •. • •# • # it `i • •• / •0 4 •• 1.. r. o .� ... ... r. • +► •• • + ii A s•* # *• t0.• '•• • Fes1�• �• . . •• • t "� S' * *+i • 441 *• �• f #* i• �. i; •0 4 ii •i * • • •4• ''• •• , • •* s : •sEt CLAYSTONE, very hard, moist, gray. p 6y3_i•i Boring terminated at 83 feet LEGEND Ilr WATER LEVEL AT TIME OF DRILLING H MODIFIED CALIFORNIA SAMPLER �# WATER LEVEL # DAYS AFTER DRILLING --te# DEPTH OF CAVE # DAYS AFTER DRILLING I DEPTH OF REFUSAL CM TECHNICAL TSERVICES NI W-4 Page 1 of 3 PROJECT BORING NAME LOCATION Todd Bean Property 40.417947°/-104.564652° Monitor Wells PROJECT BORING ELEVATION NUMBER 22.3058 DRILLING COMPANY/RIG Dakota Drilling/Diedrich 50 CM REP. K. McNally DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/28/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/28/2023 DEPTH (ft) BLOW COUNT SAMPLE GRAPHIC LOG GRAPHIC ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) WELL DIAGRAM o BULK V —r - _5_ —10 - .-i i-15- --- - 25—r 0— — .w — • *i; ' •••• • • • ! a : i• .0 ! • a -Concrete pad with 3' steel stickup monument — - - - - - - - - - - _ _' CLAY, sandy, silty, moist to wet, brown, calcareous. - lo _ e. I- - • ,S =!: • . ' ease . S ..... s a. . a+! 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' • •f , P!• ! *• t i • a ', •, • M i rt i 0,14 • 44• • + • 1 •i* 414 • `s4 • #�' ` • •e • 1146 •* • *i: •6 • • i •i• • •` • . • * •#. •♦ It • *., • • !• • *• • LEGEND V WATER LEVEL AT TIME OF DRILLING iiii STANDARD PENETRATION TEST \J# WATER LEVEL # DAYS AFTER DRILLING --'# DEPTH OF CAVE # DAYS AFTER DRILLING 1 DEPTH ir OF REFUSAL ,, TEC N1CAL VICESfiefillTSER M WI -4 Page 2 of 3 PROJECT BORING NAME LOCATION Todd 40.417947°/-104.564652° Bean Property Monitor Wells PROJECT NUMBER BORING ELEVATION 22.3058 DRILLING COMPANY/RIG Dakota Drilling/Diedrich 50 CM REP. K. McNally DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/28/2023 HAMMER SYSTEM Rope & Cathead DATE COM PLETED 6/28/2023 DEPTH (ft) BLOW COUNT SAMPLE GRAPHIC LOG WELL DIAGRAM Water Level and Depth of Cave (ft) ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) p BULK is _ ,, —4 0 " t•*•#4De r • • •••a i� i es *t'*# • i•• • • ! • *oils s • Ito .se • % • t �'~M# s • • •••• i • '� i ` 0. 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K. McNally DRILLING METHOD 4.25in. Diameter HSA DATE STARTED 6/28/2023 3 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 6/28/2023 Page 3 of SAMPLE � tg I 0.w o 0 ti 0 m G m J L% = OA t9 ft ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) WELL DIAGRAM ..6 RI ai '3 a 3d w o al r ti o. p • ill •* •fil @• } 1 ; i • • • i a — g ! it 9 •♦ lie ♦* i si {* +� '++ i • • SP ft 4 -•i} w•♦• '+•♦ — .64 •• • •+ '4 i } i,41 • • I ; on • ;+�• ••+ !i • i • 4 • • 0 ♦ + # • ••• • •• ♦i'•♦i 'f+r, • • i, - # ♦ +1 ** --• 4I:i •'t as a a .+ ; •ice i! ii • - * •f #� D♦ •• �♦ it ♦ ♦ ♦• s * !s ="U0 i i• • 55/12 4#,•a� • tl #+• ; w'• 4 •aA •i+ •.• • i r i 94, * I 041i; • ♦ 1{h ♦iri # +i •• • ♦4 _ .♦ •. I. 'ii 85 `♦•i•1 ♦• i • i It •# al •♦• • , t• ♦ # t •♦♦* 1 i*.• ♦♦ r. — I +• ••4 iii ♦i • • • #•i. L.4 • • # •* s • • D♦•• , . r#♦•i� •♦+•• �4r ♦ • P • 4, t« • i +• # ; • 0640 441/4 4•4, *'�.♦i •; i— - hard, iron ' �� ,��„ CLAYSTO N E, very moist, gray, with staining .•# ►..• ; _ ♦4• • •4 • IS }. * o - ••: it ii I ';# * 4• ie - — 4• •i • . • 68/11 I �., sti, a • —95 , Boring terminated at 95 feet LEGEND 7 WATER LEVEL AT TIME OF DRILLING H si ANDARD PENETRATION TEST C]# WATER LEVEL # DAYS AFTER DRILLING DEPTH OF CAVE # DAYS AFTER DRILLING —►# ' _' DEPTH OF REFUSAL Ali �ir 1�, � TECHNICAL S E V I C E S I APPENDIX E EnJET Consulting, Inc. Ogilvy River Farm, LLC. — Ogilvy River Farm Pit Slope Stability Analysis Peak Acceleration e/og) with 2% Probability of Exceedance in 50 Years USGS Map, Oct. 2002rev 1250w 50 °j 120°w 95°W 100°W _ 50°[M1 30°N ON 25°N 125°w 120°w 100°W 115°W 105°W 25° N 300 200 160 120 80 60 50 40 30 20 18 16 14 12 10 8 6 4 2 0 110°W 1 r 2136 ENVIRONMENTAL CONSULTANTS i Sound Science. Creative Solutions.® To: 2/68 295 Inferlocken Boulevard, Suite 300 Broomfield, Colorado 80021 Tel 303.487.1 183 www.swca.com TECHNICAL MEMORANDUM J. C. York J -T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, Colorado 80621 From: Ross Campbell, SWCA Cultural Resources Specialist Melanie Medeiros, M.A., RPA, SWCA Cultural Resources Principal Investigator Date: September 8, 2023 Re: Cultural Resource Support for the Oglivy River Farms Gravel Mining Pit in Weld County, Colorado / SWCA Project No. 82031 J -T Consulting, Inc. (J -T Consulting) contracted SWCA Environmental Consultants (SWCA) to conduct a cultural resource review and reconnaissance survey to support the proposed Oglivy River Farms Gravel Mining Pit project (project). The project consists of the new construction of a gravel mining pit on approximately 53 acres of agricultural land (Parcel No. 096305000029) (hereafter referred to as the project area) north of Kersey, Colorado, on private land owned by Oglivy River Farm LLC (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 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 located 1.8 miles north of Kersey, Weld County, Colorado, in the southeast quadrant of Section 5 and the northeast quadrant of Section 8 of Township (T) 5 North (N), Range (R) 64 West (W), as depicted on the 1960 U.S. Geological Survey (USGS) Kersey, Colorado, 7.5 -minute quadrangle (see Figures 1 and 2). The parcel is irregularly shaped and is composed of tilled agricultural field on the T2 and T3 terraces of the South Platte River. The Oglivy Ditch, a historical irrigation ditch, surrounds the northeastern and northern boundaries of the project area. Additional tilled and fallow agricultural fields surround the project area to the north, east, and west (Figure 3). The south and southwest corners of the project area are closer to the South. Platte River and are therefore characterized by river deposits of loose gravel and pebbles. Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado • • • Project Area Township/ Range Boundary i _ • Surface Ownership Private State s• 4 Weld County, CO USGS 7.5' Quadrangle: Kersey, CO (1960) T5N R64W Section 05,08 NAD 1983 UTM Zone 13N 4O422°N 104.5695°W Base Map: EsriArcGl5 Online, accessed August 2023 Updated: 8/21/2023 Proj©cI No 82031 Layout: 82031_projectLocalion_Topo Aprx; 82031 ogilvyRiverFarmsCR 0( p 4818 1,000 2,000 Feet iAlelers EA 250 500 N A 1:24,000 S CA ENVIRONMENTAL CONSULTANTS Figure 1. Project location. 2 Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado 0 1,000 0 Project Area Township/ Range Boundary Weld County, CO USGS 7.5' Quadrangle: Kersey, CO (1960) T5N R64W Section 05,08 NAD 1983 UTM Zone 13N 40.4222°N 104.5698°W Base Map: EsnArcGIS Online, accessed August 2023 Updated: 8/21/2023 Project No 82031 Layout: 82031 _p roj a ct Lo cati o n_Aoria I Aprx:02031 ogilvyRiverFarmsCR 11 N A 250 1:24,000 2,000 1 Feol Meters - - I LNVIRONMLNTAL CONSULTANTS Figure 2. Aerial map of the project area and surrounding properties. 3 Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado Figure 3. Overview of the project area taken from the northwest corner with the 8- to 10 -foot -tall corn stocks clearly visible in the foreground; view to the southeast. One of highest terraces in the Platte River system is 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. On the north side of the river north of Kersey, there is the modern floodplain alluvium and then a strip of what is called the Hardin alluvium below the level of the T3, Kersey alluvium (Holliday 1987). The Hardin fill is characterized by bedded channel sands and finer -grained overbank alluvium and dates to less than 1,000 years B.P. (Holliday 1987; McFaul et al. 1994). Much of this landscape has been flattened by historic agricultural activities. Five soil units are mapped in the project area (NRCS 2019). All five soil units occur on relatively flat floodplains, plains, and/or terraces, are derived from primarily alluvial material, and are well drained. Notably, Both Haverson loam, 1 to 3 percent slopes, and Nunn clay loam, 1 to 3 percent slopes, contain an Ap horizon, which represents the plow zone, indicating these soils have been impacted by agricultural activities. In addition, the parent material for Nunn clay loam, 1 to 3 percent slopes, is very old (Pleistocene -aged) alluvium and/or eolian deposits. Overall, Haverson loam, 1 to 3 percent slopes, has the most potential for preserving archaeological deposits, if present. This soil unit covers most of the southern half of the project area (see Figure 3). 4 Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado Table 1. Summary of Typical Soil Profiles in Project Area Map Unit Name Horizon Depth (inches) Texture Percent Project Area Aquolls and Aquents, gravelly substratum Hi 0-48 inches Loam H2 48-60 inches Gravelly sand 0.4% Colombo clay, 1 to 3 percent slopes H1 0-14 inches Clay loam H2 14-21 inches Stratified loam to clay loam H3 21-60 inches Stratified sand to loam to clay loam 26.1% Haverson loam, 1 to 3 percent slopes Ap 0-4 inches Loam A 4-11 inches Loam Cl 11-19 inches Loam C2 19-80 inches Stratified sandy loam to loam 50.3% Nunn clay loam, 1 to 3 percent slopes Ap 0-9 inches Clay loam Bt 9-13 inches Clay loam Btk 13-25 inches Clay loam Bk1 25-38 inches Clay loam Bk2 38-80 inches Clay loam 21.5% Vona sandy loam, 1 to 3 percent slopes H1 0-6 inches Sandy loam H2 6-28 inches Fine sandy loam H3 28-60 inches Sandy loam 1.6% METHODS In July 2023 and prior to fieldwork, 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 August 11, 2023, SWCA archaeologists Nick Simpson and Ross Campbell completed a reconnaissance survey of the project area to identify cultural resources and potential impacts the project may have on those resources. SWCA also excavated three shovel tests to evaluate the subsurface depositional setting and assess the project area for the potential to contain buried cultural material. RESULTS File Search and Literature Review Results of the file search and literature review indicate that eight cultural resource inventories have been previously conducted in the PLSS sections within 1 mile of the project area. No previous inventories intersect the project area; however, four inventories (5WL4295.1, 5WL2944.2, 5WL4293, and 5WL4294.1) immediately border the project area to the northeast. Additionally, 5WL4803 immediately 5 Cultural Resource Support for the Oglivy River Farms Gravel Mining Pit in Weld County, Colorado borders the project area to the southwest along the South Platte River. In total, five inventories were conducted for oil and gas projects; two were conducted for highway projects; three were conducted for academic projects; six were conducted for Colorado Department of Transportation (CDOT) projects; and seven were conducted for projects of miscellaneous type (Table 1). Table 1. Previously Conducted Cultural Resource Inventories within the File Search Area OAHP ID Year Title Contractor WL.CH.NR17 1988 Archaeological Survey of a Portion of State Highway 34 East of Greeley, Weld County FR 034-2(13) Colorado Department of Highways WL.CH.R10 1989 CDOH Project CY 03-0034-19 Kersey to Hardin Colorado Department of Highways WL.CH.R9 1990 Survey Report CDOH Project CXFR 03-0034-18 Greeley to Colorado Department of Highways Kersey VVL.E.R20 Gerrity Oil & Gas Corporation GERRITY B8-16 Jurgens 1992 Cultural Resources Inventory, Weld County, Colorado (92 - CO -10) Powers Elevation Co. Inc, WL.EP.R1 Kersey Wastewater Treatment Plant Expansion Project: An 1994 Intensive Cultural Resources Inventory, Weld County, Colorado University of Northern Colorado MC.E.R85 2006 Colorado Interstate Gas Company's Proposed High Plains Gas Pipeline Expansion Project: An Intensive Cultural Resource Inventory in Adams, Morgan, and Weld Counties, Colorado, Addendums 1 through 8 Metcalf Archaeology Consultants MC.SHF.R192 2008 Drought, Depression, and Dust: The New Deal in Eastern Colorado, Phase III, Survey Report, Cheyenne, Crowley, Elbert, Las Animas, Lincoln, Morgan, and Weld Counties Colorado Preservation, Inc. MC.AE.R26 2013 A Class III Cultural and Class I Paleontological Resources Survey of Spread 1 of the Front Range Pipeline Project (and Addendum A), Weld, Adams, Arapahoe, Elbert, and El Paso Counties, Colorado Atkins North America, Inc. As a result of these previous inventories, six precontact and 17 historic resources were recorded in the PLSS sections within 1 mile of the project area (Table 2). The precontact resources consist of a bison kill site, two burials, and three open camps. Notably, three of these sites the Klein site, the Jurgens site, and the Frazier site are located on the Kersey terrace and represent important archaeological sites associated with the Paleoindian period. Of the six precontact resources, one, the Jurgens site (5WL53), is listed on the NRHP; two are officially eligible for the NRHP; one is officially not eligible for the NRHP; and two have not been evaluated for the NRHP. The 17 historic resources consist of five irrigation ditch segments, three farms, two bridges, and one each of a root cellar, single dwelling, trash dump, culvert, latrine, and isolated find. The Donald F. Plum Farm, Fox Meadow Farm, and Scout Island Park Latrine sites are officially eligible for the NRHP, and the Oglivy Ditch is recommended eligible for the NRHP. The Plumb Ditch and the Plumb Farm require more data before an NRHP assessment can be made. The Jurgen's Sod Potato Cellar is unevaluated for the NRHP. The remaining 10 historic -age resources are recommended or officially not eligible for the NRHP. None of the previously recorded resources are in the project area. However, the Oglivy Ditch segment (5WL2944.2) as well as two unnamed irrigation ditch segments (5WL4294.1 and 5WL4295.1) are immediately adjacent to the project area. 6 Cultural Resource Support for the Oglivy River Farms Gravel Mining Pit in Weld County, Colorado Table 2. Previously Recorded Cultural Resources within the File Search Area Resource Number Resource Name Temporal Affiliation Resource Type NRHP Eligibility on Record 5WL48 Kersey burial Precontact, Hearth, burial, and Woodland period associated lithic debitage Officially not eligible 5WL51 Klein Precontact, Paleoindian and Woodland periods Open camp Unevaluated 5WL53 Jurgens site Precontact, Open camp Paleoindian period Listed on the NRHP 5WL268 Frazier Archaeological Site Precontact, Paleoindian period Bison kill and processing site Officially eligible 5WL802 Plumb Farm Historic Farm / residence Recommended needs data 5WL803 Hoover Ditch Headgate Historic Irrigation ditch Recommended not eligible 5WL804 Jurgen`s Sod Potato Cellar Historic Root cellar Unevaluated 5WL1546 5WL1555 Historic Precontact 5WL 1834 Historic Single dwelling Open camp Trash dump Officially not eligible Officially eligible Recommended not eligible 5WL2055 Webster Feedlot Burial Precontact, Late Burial Archaic period Unevaluated 5WL2944.2 Oglivy Ditch Irrigation ditch segment Historic Recommended eligible 5WL2994 South Platte River Bridge Historic Bridge Recommended not eligible 5WL3001 Culvert'- C -18-X Historic Culvert Recommended not eligible 5WL4293 State Highway 37 Bridge over Ogilvy Irrigation Ditch Historic Bridge Recommended not eligible 5WL4294.1 Historic Irrigation ditch Recommended not eligible 5WL4295.1 Historic Irrigation ditch Recommended not eligible 5WL4803 Donald F. Plumb Farm Historic Farmstead (Centennial Farm) Officially eligible 5WL5217.1 Plumb Ditch Historic Irrigation ditch segment Officially needs data 5WL5226 Fox Meadow Farm Historic Agricultural complex Officially eligible 5WL5250 Historic Isolated find Recommended not eligible 5WL6184 Scout Island Park Latrine Historic Latrine Officially eligible 5WL7295.1 Plum Farm Lateral Ditch Historic Irrigation ditch segment Officially not eligible Historic Map and Aerial Images Review Additionally, SWCA reviewed historic maps and aerial imagery for features that may be present within the project area (Table 3). Sources reviewed include the General Land Office (GLO) plats through the Bureau of Land Management (BLM) website (BLM 2023), USGS quadrangles using the National 7 Cultural Resource Support for the Oglivy River Farms Gravel Mining Pit in Weld County, Colorado Geologic Map Database (USGS 2023), and aerial imagery available through the Nationwide Environmental Title Research website (NETROnline 2023). Table 3. Historic Maps Reviewed Map Name Map Type/Preparer Date T5N, R64W GLO original survey plat 1866 Greeley, Colorado USGS 1:125,000 -scale quadrangle 1902 Kersey, Colorado USGS 1:24,000 -scale quadrangle 1950 Greeley, Colorado USGS 1:250,000 -scale quadrangles 1954, 1957, 1958, 1961, 1964, 1965 The 1866 GLO plat for T5N, R64W shows only two historic features on the plat, both of which are unnamed trails. One generally parallels the South Platte River on its north side and the other generally parallels the South Platte River on its south side. The north -side trail is present in both Sections 5 and 8 and may cross through the very southern edge of the project area. The 1902 USGS Greeley, Colorado, 1:125,000 -scale quadrangle shows scattered development in the general vicinity of the project, with homesteads, farmsteads, and ranches connected via a network of improved and unimproved roads. The Oglivy Ditch, which was constructed in 1881, is depicted as trending southeast through the project area, generally paralleling the river. In addition, an east -west - oriented improved but unnamed road is shown cutting through the center of the project area, and a north - south -oriented improved but unnamed road is shown bordering the project area on its east side. Today, these roads are known as Weld County Road 60 and Weld County Road 53, respectively. No buildings are depicted in the project area, although one building is shown just to the south and adjacent to Weld County Road 53. The 1950 USGS Kersey, Colorado, 1:24,000 -scale quadrangle shows increased settlement in the general project area. Notably, the Oglivy Ditch and an associated unimproved, unnamed road are shown as bordering the project area to the north and there is no longer a road cutting through the project area. The other mid -twentieth century quadrangles reviewed are at too large of a scale to show much detail. Available aerial imagery covering the project area dates between 1948 and 2019 (NETROnline 2023). In general, the aerial imagery shows the Oglivy Ditch and associated unimproved road in their modern alignment, forming the northern border of the project area. The project area itself has been used for agricultural purposes since at least 1948 and remains relatively unchanged through 2019. However, the 1969 imagery shows a structure, potentially a house, along the southwestern border of and within the project area; by 1984, the structure is gone and a larger structure, potentially farm, is present immediately south of the former structure's location, outside of the project area. The 1984 imagery also shows a large, cleared area about 55 m east of the location of Shovel Test 03 (see Reconnaissance Survey section of report). This cleared area contains what appears to be a rectangular corral -like structure as well as farm equipment and may be associated with a farm located to the southeast, just outside of the project area. This cleared area has been reclaimed by 1999. By 2013, the Z Ranch Event Center has been constructed north of the project area. GLO Land Patent Search A GLO patent search was conducted through the BLM land patent database covering Sections 5 and 8 in T5N, R64W (BLM 2023). Nine patents were issued to eight unique entities between 1868 and 1909, with one patent issued as a cash entry, five patents issued under the 1855 Scrip Warrant Act, two patents issued 8 Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado under the 1862 Homestead Entry Act, and one patent issued under the 1862 Union and Central Railroad Grant. Only one of these patents pertains to the land within the project area: in 1868, James P. Flanagan and Ira Corse were issued a patent for 160 acres of land within the project area under the 1855 Scrip Warrant Act. Nothing identified during review of historic maps and aerial imagery or during the reconnaissance survey can be clearly associated with this land patent. Table 4. Summary of General Land Office Land Patent Records Patentee Name Year Location (Township/Range/Section/Aliquots) Patent Type Accession Number Allison, John 1909 T5N/R64W/S8, SE'/ N E% 1862 Homestead Entry Act 79762 Allison, John 1904 T5N/R64W/S8, W'A N E% 1862 Homestead Entry Act 000800_.255 Farwell, Joseph H., and John Rima 1869 T5N/R64W/S8, NW'/ 1855 Scrip Warrant Act MW -0441-257 Flanagan, James P., and Ira Corse 1868 T5N/R64W/S5, S%SE'/4 T5N/R64W/S8, NE'/NE'/ T5N/R64W/S9, NW'/4NW% 1855 Scrip Warrant Act MW -0441-112 Hamilton, Richard, and 1867 T5N/R64W/S8, N'/2SE'/, SE%SE'/ Samuel Nichols T5N/R64W/S9, SW'/SW'/ 1855 Scrip Warrant Act MW -0359-069 Stahl, Benjamin E Abigail Schermahorn, and John Paul Jones 1868 T5N/R64W/S8, SW% 1855 Scrip Warrant Act MW -0441-111 Tubbs, Avery B., Maria Smith, and Richard Noyes 1868 T5N/R64W/S5, S'%SW% T5N/R64W/S6, S%SE'/4 1855 Scrip Warrant Act MW -0441-108 Union Pacific Railway 1883 T5N/R64W/S5, SY2N'/2, NY2S'/2; Company Lots 1 and 2 1862 Union and Central Railroad Grant COCOAA 039961 Witter, Daniel 1870 T5N/R64W/8, SW%SE'/ 1820 Sale -Cash Entry CO0210__.172 General Area History Weld County was first established in 1861, under the Territory of Colorado (Weld County 2023a). A majority of the county came to be 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 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). Kersey, Colorado, began as a small farming community called Orr in the 1890s and was recognized in 1908 as an agricultural community. Shortly thereafter, the town's name was changed to Kersey (Kersey 2022). The agricultural town has historically relied on shipping produce via the nearby railroad lines; however, today most residents are employed by the retail trade, health care and social assistance, educational services, and mining (DataUSA 2023). The project parcel (Parcel No. 096305000029) is zoned as agricultural and owned by Ogilvy River Farm LLC. In 2022, Ogilvy River Farm LLC acquired the property from the Heckendorf family, who had acquired the property in 2017, according to Weld County Clerk and Recorder records online (Weld County 2023b). A general search on Ancestry.com and other websites did not find any additional 9 Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado information pertaining to members of the Heckendorf family (particularly Richard F. Heckendorf and Joanne I. Heckendorf). RECONNAISSANCE SURVEY On August 11, 2023, SWCA completed a reconnaissance survey of the project area to identify cultural resources and potential impacts the project may have on those resources. At the time of survey, the entire project area was planted with dense 8- to 10 -foot -high corn. Intensive pedestrian survey was not possible in the planted field due to the low visibility caused by the corn stocks. Ground surface visibility and maneuverability were further reduced by the irrigation of the project area at time of survey. No cultural material was observed on the ground surface during the reconnaissance survey. Three shovel tests were placed around the periphery of the project area to assess the deposition (Table 5, Figure 4). Shovel Tests Given the location of the project area on the Pleasant View terrace on the north side of the South Platte River, three shovel tests were excavated across the project area as part of the reconnaissance survey to assess the deposition and the potential for buried cultural material (see Table 5). Shovel Test 1 (ST01) was placed in the northwest corner of the project area, immediately outside the corn field nearest the Ogilvy Ditch. Shovel Test 2 (ST02) was placed in the southwestern portion of the project area, nearest to the South Platte River. Shovel Test 3 (ST03) was placed in the south-central portion of the project area, closer to the South Platte River and the clearing seen in the 1984 aerial photographs. Table 5. Shovel Test Results ST No. Depth I Soil Profile Artifacts 01 0-99 centimeters below surface (cmbs) 0-90 level 90-99 cmbs: Mixed of gravel cmbs: dark and pebbles. Coarse grayish/brown brown disturbed loamy sand with soils. Moderate river sediment 30-60 cmbs: toothpaste bone, 1 aluminum green glass container, fragment. 1 Trident foil, 1 1 burnt 02 L 0-75 cmbs 0-40 cmbs: 40-48 cmbs: Brown White/brown sandy clay clay loam None 48-75 cmbs: Brown/grayish clay 03 0-78 cmbs 0-78 cmbs: and pebbles Dark gray/brown clay with a moderate level of gravel None The reconnaissance survey and associated shovel tests confirm the project area has been affected by plowing into the gravelly alluvium, effectively removing stable topsoil. Few, if any soil horizons remaining within the cultivated field could support intact subsurface archaeological materials. Likewise, the corners of the project area outside the agricultural field exhibit little to no potential for intact subsurface precontact resources. 10 Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado 14000 46231 • 0 • d X660 46 Negative Shovel Test Positive • Shovel Test O Township/ Range Boundary Surface Ownership Project Area I Private [ 1 State 0 Weld County, CO USGS 7.5' Quadrangle: Kersey, CO (1960) T5N R64W Section 05,08 NAD 1983 UTM Zone 13N 40.4223°N 104.5698°W Base Map: Esrr ArcGIS Online, accessed August 2023 Updated: 8121)2023 Project No 82031 Layout: 82031 rosullstvlap Aprx: 82031_ogilvyRiverFannsCR 41 N 250 1:24,000 �Ecur Mahn 500 LNVILONMENTAI CONSULTANTS Figure 4. Project area, showing the shovel tests excavated to examine deposition. 11 Cultural Resource Support for the Ogilvy River Farms Gravel Mining Pit in Weld County, Colorado CONCLUSIONS AND RECOMMENDATIONS Given the level of depositional disturbance caused by the modem agricultural use on this parcel, confirmed by the reconnaissance survey and shovel tests, neither shallow nor native sediments that could retain precontact or early historic archaeological sites remain in the project area. No additional archaeological assessment is recommended in the project area. 12 Cultural Resource Support for the Oglivy River Farms Gravel Mining Pit 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 August 18, 2023. DataUSA 2023 "Kersey, CO." datausa.io. Accessed August 18, 2023, 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. Town of Kersey 2022 Official Website. Available at: http://www.kerseygov.com/. Accessed August 28, 2023. 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. Nationwide Environmental Title Research (NETROnline) 2023 Historic Aerials Viewer. Available at: https://www.historicaerials.com/viewer. Accessed March 13, 2023. Natural Resources Conservation Service (FRCS) 2019 Web Soil Survey. Soil Survey Geographic (SSURGO) database. Available at: http://websoilsurvey.nres.usda.gov/. Accessed August 18, 2023. U.S. Geological Survey (USGS) 2023 TopoView. National Geologic Map Database. Available at: https://ngmdb.usgs.gov /topoview/viewer/. Accessed August 18, 2023. Weld County 2023a About Weld County. Available at: https://history.weldgov.com/Home. Accessed August 18, 2023. 2023b Weld County Property Portal. Available at: https://propertyreport.co.weld.co.us /?account —R4640086. Accessed August 18, 2023. 13 Hello