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Home My WebLink About20181649.tiffCOLORADO Division of Reclamation, Mining and Safety Department of Natural Resources 1313 Sherman St. Room 215 Denver, CO 80203 RECEIVED JUL 02 2018 WELD COUNTY COMMISSIONERS NOTICE Consideration of 112 Hard Rock Reclamation Permit Application DATE: June 1, 2018 TO: Weld County Commissioners 915 10th St Greeley, CO 80631 FROM: Eric C. Scott, Environmental Protection Specialist fef/4.44 RE: Hunt Water, LLC Gravel Mine, File No. M-2018-027 Please be advised that on June 1, 2018, Hunt Water, LLC, whose address and telephone number are 14460 WCR 40, Platteville, CO 80651; (970) 534-0917, filed an application to conduct a Surface mining and reclamation operation, at or near Section 6, Township 3N, Range 66W, 6th 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 Developed water resources post -mining land use. The application decision date is scheduled for August 30, 2018. 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 be found at http://drmsweblink.state.co.us/ by searching M2018027 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 http://mining.state.co.us/S iteCollectionDocuments/Laserfische%20User%20Guide.pdf. 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 newspaper public notice. You should contact the applicant for the newspaper publication date. The Office will assume you have no comment or objection to the proposed activity if none are received by the end of the public comment period. If you need additional information or have any questions regarding the above -named application, please contact Eric Scott at the Division of Reclamation, Mining and Safety, 1313 Sherman Street, Room 215, Denver, CO 80203, by telephone at 303-866-3567 x 8140, or by email at Eric.scott@state.co.us. M -AP -05A eOlil'-ICac1`1 Pu,bl« Re -vie, QC: pLawl-r),Pw(EatailrM/aK) a -t -o9-18 O7-03-18 1313 Sherman St. Room 215 Denver, CO 80203 P (303) 866-3567 F John W. Hickentooper, Governor I Robert W. Randall, Executive Director I Virginia Brannon, Director May 21 2018 Board of County Commissioners 915 Tenth Street P. O. Box 758 Greeley CO 80632 RECEIVED MAY 2 1 2018 COMMISSIONERS VIA: Certified Mail/Hand Delivered RE: Division of Reclamation Mining and Safety, Mine Land Reclamation Board (112) Operation Reclamation Permit Application, Weld County, Colorado; Hunt Water, LLC Gravel Mine Dear Board: Hunt Water, LLC Gravel Mine is applying for a MLRB permit to mine sand at the project site. The site is located adjacent and west of the South Platte River. The site is located adjacent and west of the Us Highway 85. The site is located in the SE 1/4 of Section 6, Township 3 North, Range 66 West of the 6th P.M., County of Weld, State of Colorado, except those portions conveyed in deeds recorded June 15, 1937 in book 1011 at page 463, November 27, 1957 in book 1490 at page 444 and November 27, 1957 in book 1490 at page 446, and except and portion of subject property lying with the railroad right-of-way adjoining highway 85 along the east side. Notes; 1. the above legal contains lot a, recorded exemption no. 1211-06- 4-re1639, recorded November 1, 1996 at reception no. 2413556 and lots a and b, corrected recorded exemption no. 1211-06-4 re -3994, recorded November 23, 2005 at reception no. 3342370. The permit boundary excludes lot a -re -3994. The site is generally bounded on the west by farm land and Weld County Road 25.5, US Highway 85 and the Union Pacific Rail Road on the East, and to the north and south farm land. The project is located in Weld County, Colorado. The purpose of this notice is to slurry line the Site, mine it for gravel and reclaim it as a water storage reservoir. As required by the DRMS regulations, we have enclosed the following information for your review: • Construction Material Regular (112) Operation Reclamation Permit application form • Exhibit B Index Map • Exhibit C Mining Plan Map • Exhibit F Reclamation Plan Map If you have any questions, please feel free to contact me at 303-833-1416, ext. 202. Sincerely, CIVIL RESOURCES, LLC Andy Rodriguez, P.E. Civil Engineer J:IBestway-2131GIobal Assets IDRMS INotices\NOTICE Cltr Cnty Cmmsrs.doc Vu1ol►c- CZextela L(vvtA.11,T'W (eK/C-MIinnI CO OS -3o -l$ OS-2l-Ig 2018-1649 May 21, 2018 Clerk to the Board of Weld County Commissioners 915 Tenth Street, Rm 317 Greeley, CO 80632 RE: Hunt Water LLC, Gravel Mine Permit Dear Clerk to the Board: As a requirement of the Division of Reclamation Mining and Safety (DRMS), the complete Hunt Water LLC, Gravel Mine application must be on file at the County Clerk's Office and be available for public viewing. A copy of the complete application on behalf of DHF Gravel Mine is attached. Please sign below to indicate that you have received the above -mentioned information and return this page to us by email at andy@civilresources.com. As always, thank you for your assistance. Sincerely, Civil Resources, LLC Andy Rodriguez, P.E. Project Engineer Confirmation of Receipt: I have received the above reference documents, and will put it on file for public viewing. ®,>A4.1 ( Difd`� �a�,�d. d ) s- Lt -(c County Clerk to the Board Date J:11alllrwin-1051DHF-Gravel Mine1DRMS\letter to clerk_signature reqted.doc HUNT WATER, LLC GRAVEL MINE DRMS 112 PERMIT SUBMITTAL M-201 8-XXX PREPARED FOR: Hunt Water, LLC 17295 HWY 85 Platteville, CO 80651 PREPARED BY: Civil Resources, LLC 323 5th Street P.O. Box 680 Frederick, CO 80530 303.833.1416 DATE SUBMITTED TO DRMS: MAY 22, 2018 IC I! I:, c, 3)1 I STATE OF COLORADO � 4 DIVISION OF RECLAMATION, MINING AND SAFETY Department of Natural Resources 1313 Sherman St, Room 215 Denver, Colorado 80203 Phone: (303) 866-3567 FAX: (303) 832-8106 CONSTRUCTION MATERIALS REGULAR (112) OPERATION RECLAMATION PERMIT APPLICATION FORM CHECK ONE: There is a File Number Already Assigned to this Operation Permit # M - New Application (Rule 1.4.5) E Conversion Application (Rule 1.11) COLORADO DIVISION OF RECLAMATION MINING — &— SAF ETY (Please reference the file number currently assigned to this operation) ® Amendment Application (Rule 1.10) Permit # M - (provide for Amendments and Conversions of existing permits) The application for a Construction Materials Regular 112 Operation Reclamation Permit contains three major parts: (1) the application form; (2) Exhibits A -S, Addendum 1, any sections of Exhibit 6.5 (Geotechnical Stability Exhibit; and (3) the application fee. When you submit your application, be sure to include one (1) complete signed and notarized ORIGINAL and one (1) copy of the completed application form, two (2) copies of Exhibits A -S, Addendum 1, appropriate sections of 6.5 (Geotechnical Stability Exhibit, and a check for the application fee described under Section (4) below. Exhibits should NOT be bound or in a 3 -ring binder; maps should be folded to 8 1/2" X 11" or 8 1/2" X 14" size. To expedite processing, please provide the information in the format and order described in this form. GENERAL OPERATION INFORMATION Type or print clearly, in the space provided, ALL information requested below. 1. Applicant/operator or company name (name to be used on permit): 1.1 Type of organization (corporation, partnership, etc.): LLC 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 Hunt Water, LLC Hunt Water, LLC Gravel Mine 4. Fees: 4.1 New Application 4.2 New Quarry Application 4.4 Amendment Fee 4.5 Conversion to 112 operation (set by statute) overbuden 5. Primary commoditie(s) to be mined: 5.1 Incidental commoditie(s) to be mined: 3. / sand and gravel 400,000 1. tons lbs/Tons/vr lbs/Tons/yr 4. / 139.2 $2,696.00 $3,342.00 $2,229.00 $2,696.00 2. / lbs/Tons/yr 5. permitted acres acres acres application fee quarry application amendment fee conversion fee lbs/Tons/yr lbs/Tons/yr 5.2 Anticipated end use of primary commoditie(s) to be mined: road base, top soil 5.3 Anticipated end use of incidental commoditie(s) to be mined: -2- 6. Name of owner of subsurface rights of affected land: David Hunt If 2 or more owners, "refer to Exhibit O". 7. Name of owner of surface of affected land: David Hunt 8. Type of mining operation: El Surface El Underground 9. Location Information: The center of the area where the majority of mining will occur: COUNTY: WELD PRINCIPAL MERIDIAN (check one): 6th (Colorado) [] 10th (New Mexico) Ute SECTION (write number): S 6 TOWNSHIP (write number and check direction): T 3 1:1 North Ea South RANGE (write number and check direction): R 66 a East El West QUARTER SECTION (check one): E El SW QUARTER/QUARTER SECTION (check one): El NE tt NW • , SE SW GENERAL DESCRIPTION: (the number of miles and direction from the nearest town and the approximate elevation): West of US Highway 85, 2.5 miles north of Platteville and 2.25 mile south of Gilcrest. 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 .250374 Longitude(W) -104 .817039 OR Universal Tranverse Mercator (UTM) Example: 201336.3 E NAD27 Zone 13 4398351.2 N (5 decimal places) (5 decimal places) UTM Datum (specify NAD27, NAD83 or WGS 84) Nad 83 Zone 13 Easting Northing c -3- 11. Correspondence Information: APPLICANT/OPERATOR (name, address, and phone of name to be used on permit) Contact's Name: David Hunt Company Name: Street/P.O. Box: City: State: Telephone Number: Fax Number: DHF Title: 17295 HIGHWAY 85 Platteville P.O. Box: Colorado (970 ) _ 534 0917 ( ) - Zip Code: 80651 PERMITTING CONTACT (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: Andy Rodriguez Title: Civil Resources, LLC 323 5th Street, Frederick P.O. Box: 680 CO (303 ( )_ 833 1416x202 Zip Code: 80530 Title: P.O. Box: Zip Code: ( )- ( )- CC: STATE OR FEDERAL LANDOWNER (if any) Agency: Street: City: State: Zip Code: Telephone Number: ( ) - CC: STATE OR FEDERAL LANDOWNER (if any) Agency: Street: City: State: Zip Code: Telephone Number: ( ) - -4- 12. Primar future (Post -mining) land use (check one): L Cropland(CR) Pastureland(PL) Rangeland(RL) Forestry(FR) Residential(RS) ® Recreation(RC) Developed Water Resources(WR) 13. Primary present land use (check one : ''i Cropland(CR) ✓ Pastureland(PL) Rangeland(RL) Forestry(FR) Residential(RS)E Recreation(RC) Developed Water Resources(WR) D n General Agriculture(GA) Wildlife Habitat(WL) Industrial/Commercial(IC) Solid Waste Disposal(WD) General Agriculture(GA) Wildlife Habitat(WL) Industrial/Commercial(IC) 14. Method of Mining: Briefly explain mining method (e.g. truck/shovel): dry mining and screening, earth moving scrapers, dozers and excavators, haul trucks. 15. On Site Processing: Crushing/Screening 13.1 Briefly explain mining method (e.g. truck/shovel): dry mining and screening, earth moving scrapers, dozers and excavators, haul trucks. List any designated chemicals or acid -producing materials to be used or stored within permit area: NA 16. Description of Amendment or Conversion: If you are amending or converting an existing operation, provide a brief narrative describing the proposed change(s). -5 - Mans 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 forms, you must submit a corresponding set of the maps and exhibits as described in the following references to Rule 6.4, 6.5, and 1.6.2(1)(b): EXHIBIT A EXHIBIT B EXHIBIT C EXHIBIT D EXHIBIT E EXHIBIT F EXHIBIT G EXHIBIT H EXHIBIT I EXHIBIT J EXHIBIT K EXHIBIT L EXHIBIT M EXHIBIT N EXHIBIT O EXHIBIT P EXHIBIT Q EXHIBIT R EXHIBIT S Rule 1.6.2(1)(b) Rule 6.5 Legal Description Index Map Pre -Mining and Mining Plan Map(s) of Affected Lands Mining Plan Reclamation Plan Reclamation Plan Map Water Information Wildlife Information Soils Information Vegetation Information Climate Information Reclamation Costs Other Permits and Licenses Source of Legal Right -To -Enter Owners of Record of Affected Land (Surface Area) and Owners of Substance to be Mined Municipalities Within Two Miles Proof of Mailing of Notices to County Commissioners and Conservation District Proof of Filing with County Clerk or Recorder Permanent Man -Made Structures ADDENDUM 1 - Notice Requirements (sample enclosed) Geotechnical Stability Exhibit (any required sections) The instructions for preparing Exhibits A -S, Addendum 1, and Geotechnical Stability Exhibit are specified under Rule 6.4 and 6.5 and Rule 1.6.2(1)(b) of the Rules and Regulations. If you have any questions on preparing the Exhibits or content of the information required, or would like to schedule a pre -application meeting you may contact the Office at 303-866-3567. Responsibilities as a Permittee: Upon application approval and permit issuance, this application becomes a legally binding document. Therefore, there are a number of important requirements which you, as a permittee, should fully understand. These requirements are listed below. Please read and initial each requirement, in the space provided, to acknowledge that you understand your obligations. If you do not understand these obligations then please contact this Office for a full explanation. 1. Your obligation to reclaim the site is not limited to the amount 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; k -6- 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 joint 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. -7 - NOTE TO COMMENTORS/OBJECTORS: It is likely there will be additions, changes, and deletions to this document prior to fmal 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 fmal 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. 4 -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), C.R.S.). 2. No mining operation will be located on lands where such operations are prohibited by law (Section 34-32.5-115(4)(1), C.R.S.; 3. As the applicant/operator, I do not have any extraction/exploration operations in the State of Colorado currently in violation of the provisions of the Colorado Land Reclamation Act for the Extraction of Construction Materials (Section 34-32.5-120, C.R.S.) as determined through a Board finding. 4. I understand that statements in the application are being made under penalty of perjury and that false statements made herein are punishable as a Class 1 misdemeanor pursuant to Section 18-8-503, C.R.S. This form has been approved by the Mined Land Reclamation Board pursuant to section 34-32.5-112,C.R.S., of the Colorado Land Reclamation Act for the Extraction of Construction Materials. Any alteration or modification of this form 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, C.R.S. Signed and dated this day of If Corporation Attest (Seal) Applicant/Operator or Company Name Signed: Signed: Corporate Secretary or Equivalent Title: Town/City/County Clerk State of ) ) ss. County of ) The foregoing instrument was acknowledged before me this day of , by as of Notary Public My Commission expires: SIGNATURES MUST BE IN BLUE INK You must post sufficient Notices at the location of the proposed mine site to clearly identify the site as the location of a EXHIBIT A - LEGAL DESCRIPTION This information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.1 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: LAND PARCEL DESCTRIPTION THE SE' OF SECTION 6, TOWNSHIP 3 NORTH, RANGE 66 WEST OF THE 6TH P.M., COUNTY OF WELD, STATE OF COLORADO. EXCEPT THOSE PORTIONS CONVEYED IN DEEDS RECORDED JUNE 15, 1937 IN BOOK 1011 AT PAGE 463, NOVEMBER 27, 1957 IN BOOK 1490 AT PAGE 444 AND NOVEMBER 27, 1957 IN BOOK 1490 AT PAGE 446, AND EXCEPT AND PORTION OF SUBJECT PROPERTY LYING WITH THE RAILROAD RIGHT-OF-WAY ADJOINING HIGHWAY 85 ALONG THE EAST SIDE. NOTE: 1. THE ABOVE LEGAL CONTAINS LOT A, RECORDED EXEMPTION NO. 1211-06-4- RE1639, RECORDED NOVEMBER 1, 1996 AT RECEPTION NO. 2413556 AND LOTS A AND B, CORRECTED RECORDED EXEMPTION NO. 1211-06-4 RE -3994, RECORDED NOVEMBER 23, 2005 AT RECEPTION NO. 3342370. 2. THE PERMIT BOUNDARY EXCLUDES LOT A -RE -3994 MINING PERMIT BOUNDARY SEE COVER SHEET OF DRMS PLANS (ATTACHED) Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Amendment Application Exhibit A -1 EXHIBIT B - INDEX MAP Please refer to the attached index map. Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Amendment Application Exhibit B -1 Hunt Water, LLC Gravel Mine Mine\Drawings\SHEETSICOVER_EXSTCOND_DHF.dwg, 5/21/2018 8:52:02 AM Irwin-1051DHF-Grave LOTA- RE3994 N PROJECT LOCATION MAP ORTH SCALE: 1" = 1000 UNITS EXHIBIT C - PRE -MINING AND MINING PLAN MAPS OF AFFECTED LANDS Please refer to the attached Existing Conditions Map and Mining Plan Map. Hunt Water LLC —Gravel Mine — MLRB 112 Permit Amendment Application Exhibit C -1 I J:1Halllrwin-1051DHF-Gravel MinelDrawings1SHEETS\COVER_EXSTCOND_DHF.dwg, 5/21/2018 10:14:33 AM AFFECTED LANDS: HUNT DAVID W & HUNT KAYLEEN J: VARIOUS BUILDINGS. PONDS & ACCESS ROADS TOTAL PERMIT AREA: 139.2 ACRES FLOODPLAIN INFO: FLOODPLAIN INFO SITE IS LOCATED OUTSIDE THE FLOODPLAIN EXISTING VEGETATION: AGRICULTURAL FARM LAND SURVEY INFO: Point Consulting, LLC 846O W KEN CARYL AVE LITTLETON. Co 80128 720-258-6836 www.pn+-Ilc.com APPLICAN I: HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE, CO 80651 NOTE: OINIEA.' .MCCXOTNL.N FARMS LLC MAW / 12110 1'J4 FOUNO C.I/4 COR CIVIL RESOURCES, LLC. IS NOT RESPONSIBLE FOR SAFETY, IN, ON, OR ABOUT THE PROJECT SITE, NOR FOR COMPLIANCE DY TIIE API'ROf RIATE PARTY OF ANY REGULATIONS THERETO. THESE MAPS WERE PREPARED BY CIVIL RESOURCES, LLC IN COOPERATION WITH BESTWAY CONCRETE. BESTWAY WILL KEEP THE DIVISION OF RECLAMATION MINING AND SAFETY INFORMED OF ANY CHANGES TO THE MINING OR RECLAMATION PLANS THROUGH ANNUAL REPORTS AND FILE TECHNICAL REVISIONS AND AMENDMENT APPLICATIONS AS NECESSARY THROUGHOUT THE LIFE OF THE MINE. ANDREW R RODRIGUEZ, P.E. CIVIL RESOURCES, LLC. 5/21 /18 DATE STRUCTURE INFO: MCGLOTHLIN, RESIDENCE BUILDING GREEN VALLEY TURF, RESIDENCE BUILDING FLEMING, JAMES, STORAGE BUILDINGS CDOT, STORAGE & GARAGE BUILDINGS VARIOUS BUILDINGS OWNED BY LAND OWNER OIL & GAS FACILITIES SURROUNDING THE SITE (ANADARKO) WCR 25 5 & ROW (WELD COUNTY PUBLIC WORKS) HIGHWAY 85 (CDOT) RAIL ROAD (UNION PACIFIC) SUNCOR GAS LINE PRIVATE IRRIGATION APPURTENANCES (OWNED BY LAND OWNER) OVERHEAD POWER LINE (NORTH, SOUTH, EAST & WEST BOUNDARY)(XCEL) POWER LINE (PRIVATE) 34-6 WELL HEAD (KERR-MCGEE/ANADARKO) 23-6 WELL HEAD (KERR-MCGEE/ANADARKO) 33-6A WELL HEAD (KERR-MCGEE/ANADARKO) 25-6 WELL HEAD (KERR-MCGEE/ANADARKO) 24-6 (DIR) WELL HEAD (KERR-MCGEE/ANADARKO) 43-6 (DIR) WELL HEAD (KERR-MCGEE/ANADARKO) TELEPHONE, WEST, SOUTH AND BY HWY 85 (CENTURY LINK) TELEPHONE/FIBER BY RAIL ROAD ROW, EAST SIDE (LEVEL 3 COMMUNICATIONS) MAP LEGEND: (M) (R) I• 0 O • DENOTES MEASURED BEARING AND/OR DISTANCE DENOTES RECORD BEARING AND/OR DISTANCE SET 24" #5 REBAR & RED PLASTIC CAP "POINT L538311 SET NAIL & BRASS DISK "LS38311" FOUND GOVERNMENT CORNER FOUND CHISELED CROSS / CUT X FOUND NAIL & DISK FOUND IRON PIPE FOUND REBAR BUILDING/STRUCTURE SOIL TYPE — so— ---------- - ------------ — r—„O— NO— re.•— 006. PERMIT BOUNDARY SECTION LINE RANGE LINE BOUNDARY LINE ADJACENT BOUNDARY LINE EASEMENT LINE FEMA DESIGNATION LINE WATER LINE STORM LINE SANITARY LINE IRRIGATION LINE GAS LINE ELECTRIC LINE (UNDERGROUND) ELECTRIC LINE (OVERHEAD) COMMUNICATION LINE FIBER OPTIC LINE MISCELLANEOUS/UNKNOWN LINE MAJOR CONTOUR MINOR CONTOUR ANADARKO WELL FLOW LASS ANADARKO *ELL a FLOW VACS SEC.6 2 1/Y AWMMRIY' • CUP STAMPED-l8175•I II ' I ..- A MDARNV GASLAE .NF:LL aECITI C *EST BCXANOARr LIVE 4s 4L'/tw LNNEJ ONO MOSLOTMN MIS LLC AMszz / li/nll801810! RESIDENTIAL S7RIKRAW CENTURY LAMY raE7'MMF LL'NMC sat p oMgEn.. 04IAD ILWT AiRICID W Ref 72- C KR IAN - 478154' GRAVEL ROAD 18- CHIP. Nv a 478350' !B C.N.P. NV = 4761M' COAANc WELL/) OMRER 04140 HUNT AMACA7 *ELL (2' CT OF Rat) FOUND YELLOW PLASRc CAP STAMPED -9544- EXISTING AMP/CAPON Fa1PC 51/4 COI 5EC.6 3 I/4' ALUMW&s CAP STAMPED 'EPP & ASSOCA TES INC 2004 PLS 14815" ANADARKO FACILITY l OW*CR. &LC4 FARAKS LLC ~Ca /121107000006 I I i I I 1 l I I II I. 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CAP STAMPED lAT40 PIN LS .313125 - EDGE Or CRAWL ONOIER: MLA FARske tic NORTH 0 au 200 Awn logroons 323 5th STREET P.O. Box 680 FREDERICK, CO 80530 303.833.1416 HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE, CO 80651 970 534 0917 CONTACT: DHF HUNT WATER, LLC GRAVEL MINE WELD COUNTY, CO PLATTEVILLE, CO REVISIONS NO DESCRIPTION DATE DRAWN BY: PNT CHECKED BY: ARR DATE: may 201e SCALE: AS NOTED AS NOTED JOB NO.: EXISTING CONDITIONS SHEET: a Irwin-1051DHF-Gravel MinelDrawings\SHEETSICOVER_EXSTCOND_DHF.dwg, 5/21/2018 10:15:40 AM AFFECTED LANDS: HUNT DAVID W & HUNT KAYLEEN J: VARIOUS BUILDINGS. PONDS & ACCESS ROADS TOTAL PERMIT AREA: 139 2 ACRES FLOODPLAIN INFO: FLOODPLAIN INFO: SITE IS LOCATED OUTSIDE THE FLOODPLAIN EXISTING VEGETATION: AGRICULTURAL FARM LAND SURVEY INFO: Point Consulting, LLC 8460 W KEN CARYL AVE LITTLETON• CO 80128 720-258-6836 www.Ontilc_COn1 APPLICANT: HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE, CO 80651 NOTE: 010e MCCLOACIV tic AC / ell CON AAT4LJl4K0 Mgt AP 1201 141e5 FOUND C.I/4 CO E SECS 2 l/2" maw CAP STAIfPED -31171 CIVIL RESOURCES. LLC. IS NOT RESPONSIBLE FOR SAFETY. IN. ON, OR ABOUT THE PROJECT SITE. NOR FOR COMPUANCE BY THE APPROPRIATE PARTY OF ANY REGULATIONS THERETO. THESE MAPS WERE PREPARED BY CIVIL RESOURCES. LLC. IN COOPERATION WITH BESTWAY CONCRETE. BESTWAY WILL KEEP THE DIVISION OF RECLAMATION MINING AND SAFETY INFORMED OF ANY CHANGES TO THE MINING OR RECLAMATION PLANS THROUGH ANNUAL REPORTS AND FILE TECHNICAL REVISIONS AND AMENDMENT APPLICATIONS AS NECESSARY THROUGHOUT THE LIFE OF THE MINE. ANDREW R ROOR GUEZ, P.E. 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AMOS /12110000012.40 one wirer wan re ,,A sea arnstasswants 0We C007 /121105.10451, TELL011PLASTC CAP STAMP"( 11644- • • SI-RIPPING AND STOCKPILE AREA 1 • • • • • CAP STA ''AM 1.A140 2016 LS 36173' • 01130 521.1A Far ile• SIAM /121100200027 \ • • • 072 SOILS MAP LEGEND MAP UNIT SYMBOL MAP UNIT NAME .2) ALTVAN LOAM, 0 TO 1 PERCENT SLOPES (:.....9) DACONO CLAY LOAM, 0 TO 1 PERCENT SLOPES .29) JULESBURG SANDY LOAM, 0 TO 1 PERCENT SLOPES :::_a) JULESBURG SANDY LOAM, 1 TO 3 PERCENT SLOPES tDs LOUP-BOEL LOAMY SANDS, 0 TO 3 PERCENT SLOPES t its) OLNEY LOAMY SAND, 1 TO 3 PERCENT SLOPES tet.) OLNEY FINE SANDY LOAM, 1 TO 3 PERCENT SLOPES (I& VALENT SANDY LOAM, 0 TO 3 PERCENT SLOPES trz2) VONA LOAMY SAND, 0 TO 3 PERCENT SLOPES tia VONA SANDY LOAM, 0 TO 1 PERCENT SLOPES tat) VONA SANDY LOAM, 1 TO 3 PERCENT SLOPES • • • • APPICU /121100000015 0 I00 200 • • • • 0100 5121A FANS [LC PARCI2 /1211002000.25 ',that's below. Call before you di% It (44 • • • • CIVIL RESISURCES, LLC 323 5th STREET P.O. Box 680 FREDERICK, CO 80530 303.833.1416 WWW.CIVILRESOURCES.COM NO, HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE, CO 80651 970 534 0917 CONTACT: DHF REVISIONS DESCRIPTION DESIGNED BY: ,g8a. DRAWN BY: a_ CHECKED BY: an. JOB NO.: 105.012.01 MINING PLAN • • ~Ca 121100100010 DATE DATE: MAT 201. SCALE: AS NOTED AS NOTED MINING PLAN SHEET: 3 EXHIBIT D - MINING PLAN This information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.4 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: (a) Description of the method(s) of mining to be employed in each stage of the operation as related to any surface disturbance on affected lands; The proposed permit area includes a significant deposit of sand and gravel located in the alluvium of the South Platte River in Weld County. The site is located west and east US -85. The western portion is west of State High 60 and east of Weld County Road 25.5. The eastern portion is directly east of the BNSF Rail Road and north of Weld County Road 36. It encompasses 113 acres +/- on the west and 26 acres +/- on the east. Site Preparation: Initial disturbance of the property will include:, stripping the topsoil and overburden material, constructing the slurry wall. Mining: After the slurry wall installation, scrapers will strip the topsoil and overburden material from a given phase and place them as berms surrounding the site. Any excess material not needed for reclamation may be sold or hauled off -site during the life of the mine. The sand and gravel material will be excavated down 10 feet maximum. Each phase will be dry -mined using scrapers, bulldozers, front-end loaders, excavators, or similar equipment. The mining on this site will progress in four phases, ranging in size from 21-23 acres and proceeding from east to the west. The operator will develop and comply with a Stormwater Management Plan and Spill, Prevention, Control and Countermeasures Plan. The operator will notify the Division of Reclamation and Mine Safety and in the event of a reportable spill. Processing: The material will be dry screened or not screened at all and transported by offset by truck. The processing area will be located on the north side of the site. Import Material: Bestway Concrete & Aggregates may import material from and export material to other sites. The applicant is aware that in accordance with Rule 3.1.5(9) of the Construction Material Rules and Regulations, if any offsite material is used as backfill, a notarized letter will be submitted to the Division indicating the materials are inert. The applicant will supply such a letter to the Division if, at the time of Reclamation, the applicant intends to use off -site material as backfill. (b) Earthmoving; Topsoil and overburden will be stripped with scrapers or bulldozers and stockpiled in segregated piles at the edge of the active mine phase. Excavators, front-end loaders, and bulldozers will be used to excavate the material. Haul trucks will be utilized to transport the raw material from the active mine phase to the processing area. The phases will be mined at a 3H:1V slope. Hunt Water LLC - Gravel Mine — MLRB 112 Permit Application Exhibit D -1 (c) All water diversions and impoundments; and Strom water will be discharged per a CDPHE storm water only discharge permit. There will be no wash water for the processing area. The water required will likely be provided by the existing water rights associated with the property. (d) The size of area(s) to be worked at any one time. Excluding the processing area, the maximum area to be worked on at any one time is approximately 30 acres. (e) An approximate timetable to describe the mining operation. The timetable is for the purpose of establishing the relationship between mining and reclamation during the different phases of a mining operation. The Operator anticipates that mining will commence as soon as all permits are in place. The Operator anticipates extracting approximately 500,000 tons of aggregate per year, however, production rate may vary based on market demands. Timetable for Mining and Reclamation West Phase: Mining will begin in the north and progress south. It should take approximately 2 years. East Phase: Mining will begin in the north and progress south. It should take approximately 1 years. Miscellaneous Areas: The miner will strip all areas. 6.75 acre stock pile area (minor mining not below 10 feet total depth in the first couple of years). The stockpile area will be stripped prior to placing piles. The 12 acre processing area (minor mining not below 10 feet total depth in the first couple of years) This area will be stripped prior to placing material there. 5 acre are in the north west will be mined at 3H:1V slopes to be reclaimed as an augmentation/recharge pond. Reclamation will begin immediately after mining is complete. When possible, concurrent reclamation practices will be used to minimize site disturbance and to limit material handling to the greatest extent possible. Please refer to the Mining Plan Map in Exhibit C for phase areas to be mined, locations and areas. (f) Use Mining Plan Map in conjunction with narrative to present: (i.) Nature, depth and thickness of the deposit and thickness and type of overburden to be removed Exploratory borings drilled by Drilling Engineers in late winter of 2018 primarily along the perimeter of the site, encountered approximately two to four feet of overburden topsoil, silty sands and sandy lean clays overlying approximately 22 top 55 feet of sand and gravel on top of primarily claystone bedrock. Refer to the Stability Analysis (Exhibit S) for locations of the property extents and boring locations. The bedrock depths in the proposed mine areas ranged from approximately 24 feet to 55 feet below the ground Hunt Water LLC - Gravel Mine — MLRB 112 Permit Application Exhibit D - 2 surface. Earth Engineering Consultants (EEC) performed an analysis in May of 2017 as part of a feasibility study and this information was reviewed and is consistent with the investigation performed in late winter of 2018. (ii.) Nature of the stratum immediately beneath the material to be mined in sedimentary deposits The surficial soils at the project site are described as Broadway Alluvium (Pleistocene), described as a well sorted and well stratified sand and gravel deposit. The Broadway Alluvium is overlying the Laramie Formation (Upper Cretaceous), described as a claystone shale containing lenticular beds of sandstone and lignite, as illustrated on the Geologic Map of the Boulder -Fort Collins -Greeley Area, Colorado by Roger B. Colton, 1978. Gradation testing conducted selected soil samples obtained from our borings indicate a generally finer grain size than as described on the geologic map by Colton. The gradation results more closely match the soil description by Soister, 1965, as Late Pleistocene (Wisconsin) age Alluvial Sand and Silt as described on the Geologic Map of the Platteville Quadrangle, Weld County, Colorado by Paul E.Soister, 1965. The referenced geologic maps indicate the alluvium deposits are generally reported to be on the order of twenty-five to thirty-five feet deep within the area of the projectsite. The office of the State Engineer Division of Water Resources indicates this site is situated above the Laramie -Fox Hills Aquifer. No seismic faults are reported within approximately twenty five miles of the site. The Colorado Geological Survey (CGS) reports potentially active faults at least 25 miles west-southwest of the project site. The Cretaceous Age Laramie Formation is known to have normal faulting which offsets the layered stratigraphy, however, these faults likely occurred during or shortly after deposition and are generally not capable of producing a significant magnitude earthquake. (source: EEC Report May 26, 2017) (g) Identify the primary and secondary commodities to be mined/extracted and describe the intended use. The primary commodities are sand, gravel and fill; intended for construction materials. (h) Name and describe the intended use of all expected incidental products to be mined/extracted by the proposed operation. There are no expected incidental products to be mined. (i) Specify if explosives will be used in conjunction with the mining (or reclamation) No explosive material will be used on -site. Hunt Water LLC - Gravel Mine — MLRB 112 Permit Application Exhibit D - 3 EXHIBIT E - RECLAMATION PLAN This information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.5 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: The proposed mining and reclamation plan focuses on minimizing the ecological impacts of mining, minimizing the length of time of impact, and maximizing long-term benefits. (a) A description of the type(s) of reclamation the Operator proposes to achieve in the reclamation of the affected land, why each was chosen, the amount of acreage accorded to each, and a general discussion of methods of reclamation as related to the mechanics of earthmoving; The mined area will be reclaimed to a lined water storage reservoir due to a need within the state for water storage facilities. Refer to Exhibit F for the acreages and additional details. Earthrnoving The topsoil will be replaced by a scraper and generally graded with a blade. All grading will be done in a manner that controls erosion and siltation of the affected lands, to protect areas outside the affected land from slides and other damage. In addition, all backfilling and grading will be completed as soon as feasible after the mining process. All disturbed areas will be regraded and smoothed to a finished grade that is suitable for revegetation or the final land use. As noted previously, the area will be reclaimed as mining proceeds. Finish grading, topsoil placement and seeding will occur throughout the life of the mine. Once the resource is completely removed, final grading and vegetation of the slopes will be completed. The empty vessel will be available for water storage. A typical cross-section of the shoreline is included on the Reclamation Plan Map. (b) A comparison of the proposed post -mining land use to other land uses in the vicinity and to adopted state and local land use plans and programs. The water storage reservoirs will be compatible with the other land uses in the vicinity, which includes farmland, industrial land, and rural residential. (c) A description of how the Reclamation Plan will be implemented to meet each applicable requirement of Section 3.1. The Operator will carry reclamation to completion with reasonable diligence. Each phase of reclamation will be completed within one to two years from completion of mining, but not more than five years from the date the Operator informs the Board or Office that such phase has commenced. Section 3.1.5 Reclamation Measures Material Handling Grading will be performed to help control erosion and siltation of the affected lands through phased mining, implementing good operation techniques to handle material as little as possible, and vegetation of stockpiles remaining in place for more than one growing season. Although the use of erosion protection devices is not anticipated, if deemed necessary by the Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit E -1 operator at the time of excavation, silt fence and haybale dams will be installed to prevent erosion. Backfilling and grading will be completed as soon as feasible after the mining process is complete for each phase. Maximum slopes and slope combinations will be compatible with the configuration of surrounding conditions and selected land use. Mining will occur at a slope that is stable. Reclaimed slopes in the water storage reservoir will not be steeper than a 3:1 ratio. The upland area will be reclaimed to grades consistent with pre -mining elevations. The operator will backfill using fill material generated on -site, or imported inert fill generated outside the permit area. If any inert off -site material is used as backfill, a notarized letter will be submitted to the Division as required by Section 3.1.5(9) of the MLRB Construction Material Rules and Regulations. It is not anticipated that mining will uncover any refuse or acid-forming or toxic producing materials, however if any such materials are encountered the operator will take precaution to handle the materials in a manner that will control unsightliness and protect the drainage system. Drill or auger holes that are part of the mining operation shall be plugged with non- combustible material, which shall prevent harmful or polluting drainage. Any test pits, soils boring holes, or monitoring wells not located within the mine excavation limits will be plugged as soon as it can be confirmed that they are no longer needed for the operation. Mined material to be disposed of within the affected area will be handled in such a manner so as to prevent any unauthorized release of pollutants to the surface drainage system. No unauthorized release of pollutants to groundwater shall occur from any materials mined, handled or disposed of within the permit area. Section 3.1.6 Water -General Requirements The Operator will comply with applicable Colorado water laws governing injury to existing water rights and with applicable state and federal water quality and dredge and fill laws and regulations. The operator will develop and comply with a stormwater management plan and will use best management practices (BMPs) to ensure groundwater and surface water are protected to the greatest possible extent. BMPs include schedules of activities, prohibitions of practices, maintenance procedures and other management practices to prevent or reduce the pollution in runoff from the site. Section 3.1.7 Groundwater - Specific Requirements The Operator will comply with the applicable standards and conditions for classified and unclassified groundwater. Section 3.1.8 Wildlife: The mining and reclamation plans have been designed to account for the safety and protection of wildlife on the mine site. The Operator will mine the site in phases and use concurrent reclamation methods to minimize the impact on wildlife. As described in the Pinyon site assessment, Exhibit H of this application, the proposed reclamation plan may improve wildlife habitat. The proposed seed mix and plantings will Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit E - 2 create improved cover, foraging, roosting, and nesting areas for wildlife. The water area within the reservoir will serve as habitat for waterfowl and other bird species and the fringes of the reservoir will be used by mammal, bird, reptile and amphibian species. Control and/or removal of noxious and weedy species during the project and the replacement of desirable graminoid, forb, shrub and tree species during reclamation will result in enhancement of wildlife habitat on the project site. Section 3.1.9 Topsoiling Topsoil shall be removed and segregated from other spoil. Topsoil stockpiles shall be stored in places and configurations to minimize erosion and located in areas where disturbance by ongoing mining operations will be minimized. Once stockpiled, topsoil shall be rehandled as little as possible. Stockpiles that will remain in place for more than one growing season will receive vegetative cover, as outlined on the Reclamation Plan Map, as soon as possible to minimize erosion. Section 3.1.10 Revegetation: In those areas where revegetation is part of the reclamation plan, the land shall be revegetated in a manner that establishes a diverse, effective, and long-lasting vegetative cover that is capable of self -regeneration without continued dependence on irrigation or fertilizer and is at least equal in extent of cover to the natural vegetation of the surrounding area. The proposed seed -mix and plantings for reclamation are outlined on the Reclamation Plan included in Exhibit F of this application. Section 3.1.11 Buildings and Structures Please refer to the enclosed Reclamation Plan included in Exhibit F. Section 3.1.12 Signs and Markers The Operator will post appropriate signage at the entrance to the mine site. The permit area will be marked by existing fencing, or proximity to existing County roads. (d) Plans for topsoil segregation, preservation and replacement; for stabilization, compaction and grading of spoil; and for revegetation. Topsoil will be removed and segregated from other spoil. Topsoil not needed for reclamation may be sold or removed from the site. For reclamation, topsoil will be replaced by a scraper and generally graded with a blade. Grading shall be done in a manner that controls erosion and siltation of the affected land and protects areas outside the affected land from slides and other damage. In addition, backfilling and grading shall be completed as soon as feasible after the mining process. Final grading will create a final topography that is appropriate for the final land use. For example, final grading of the reservoir above the high water line will replace material at a maximum 3:1 slope to meet the grade at the top of the banks. Topsoil will be uniformly placed and spread on areas disturbed by the mining, above the anticipated high water line. The minimum thickness shall be 6 inches above the surrounding finished grade, consistent with existing topsoil depths on -site. The topsoil shall be keyed to the underlying and surrounding material by the use of harrows, rollers or other equipment suitable for the purpose. Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit E - 3 In those areas where revegetation is part of the reclamation plan, the Operator will revegetate the land in such a manner so as to establish a diverse, effective, and long- lasting vegetative cover that is capable of self -regeneration without continued dependence on irrigation or fertilizer and is at least equal in extent of cover to the natural vegetation of the surrounding area. Seed will be drilled and mulched. The revegetation seeding and plant list on the Reclamation Plan Map contains the preferred species of grasses, shrubs and trees to be planted. Seeding will take place once final grading and replacement of topsoil have been completed for each phase. Timing of seeding will be consistent with standard horticultural practice for dryland applications - generally between late September and the middle of April to ensure there is adequate moisture for germination. (e) A plan or schedule indicating how and when reclamation will be implemented. Include: I. An estimate of the periods of time which will be required for the various stages or phases of reclamation. Please refer to the Timetable for Mining and Reclamation in Section (e) of Exhibit D. ii. A description of the size and location of each area to be reclaimed during each phase. Please refer to the Reclamation Plan Map (Exhibit F). iii. Outlining the sequence in which each stage or phase of reclamation will be carried out. Please refer to the Timetable for Mining and Reclamation in Section (e) of Exhibit D. (t) A description of: i. Final grading - maximum anticipated slope gradient or expected ranges thereof; The finished slopes of the reservoir will be 3 horizontal to 1 vertical. ii. Seeding - types, mixtures, quantities and time of application; Please refer to the Reclamation Plan Map for the list of plant materials and seeds to be utilized. The operator will seed during the appropriate season to ensure adequate moisture for germination and implement weed controls to allow the grasses to successfully establish. Additional plantings may be installed once the reservoirs are full of water and the grasses are established. iii. Fertilization -types, mixtures, quantities, and time of application; The type and application rate of fertilizer shall be determined based on a soil test at the time of final reclamation. iv. Revegetation - types of trees, shrubs, etc.; and Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit E - 4 Please refer to the Reclamation and Landscape Plan Maps for the types, quantities and location of trees and shrubs to be planted. v. Topsoiling - specify anticipated minimum depth or range of depths for those areas where topsoil will be replaced. Topsoil will be uniformly placed and spread on all areas disturbed by the mining above the anticipated high water line. The minimum thickness shall be 6 inches above the surrounding finished grade. WEED MANAGEMENT PLAN Hunt Water, LLC will monitor and control noxious weeds as they appear. Hunt Water, LLC typically prefers to control weeds mechanically, by mowing and/or discing. If necessary, weeds will be killed with a contact herbicide. Hunt Water, LLC has all of the necessary equipment in house to perform these tasks. Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit E - 5 EXHIBIT F- RECLAMATION PLAN MAP Please refer to the attached Reclamation Plan Map. Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Application Exhibit F -1 J 1Halllrwin-1051DHF-Gravel MinelDrawings\SHEETS\COVER_EXSTCOND_DHF dwg, 5/21/2018 10 17 24 AM AFFECTED LANDS HUNT DAVID W & HUNT KAYLEEN J VARIOUS BUILDINGS PONDS & ACCESS ROADS TOTAL PERMIT AREA 139 2 ACRES FLOODPLAIN INFO FLOODPLAIN INFO SITE IS LOCATED OUTSIDE THE FLOODPLAIN EXISTING VEGETATION AGRICULTURAL FARM LAND APPLICANT HUNT WATER LLC 17295 HIGHWAY 85 PLATTEVILLE CO 80651 NOTE CIVIL RESOURCES LLC IS NOT RESPONSIBLE FOR SAFETY IN ON OR ABOUT THE PROJECT SITE NOR FOR COMPLIANCE BY THE APPROPRIATE PARTY OF ANY REGULATIONS THERETO THESE MAPS WERE PREPARED BY CIVIL RESOURCES LLC IN COOPERATION WITH BESTWAY CONCRETE BESTWAY WILL KEEP THE DIVISION OF RECLAMATION MINING AND SAFETY INFORMED OF ANY CHANCES TO THE MINING OR RECLAMATION PLANS THROUGH ANNUAL REPORTS AND FILE TECHNICAL REVISIONS AND AMENDMENT APPLICATIONS AS NECESSARY THROUGHOUT THE LIFE OF THE MINE c,4!ti_ ANDREW R RODR GUEZ P E CIWL RESOURCES LLC 5/18/18 DATE MAP LEGEND (M) (R) 10 00 O O 9 (s) DENOTES MEASURED BEARING AND/OR DISTANCE DENOTES RECORD BEARING AND/OR DISTANCE SET 24 q5 REBAR & RED PLASTIC CAP POINT LS38311 SET NAIL & BRASS DISK LS38311 FOUND GOVERNMENT CORNER FOUND CHISELED CROSS / CUT X FOUND NAIL & DISK FOUND IRON PIPE FOUND REBAR BUILDING/STRUCTURE SOIL TYPE PERMIT BOUNDARY SLURRY WALL MINE HIGH WALL SECTION LINE RANGE LINE BOUNDARY LINE ADJACENT BOUNDARY LINE EASEMENT UNE FEMA DESIGNATION UNE WATER UNE STORM UNE SANITARY UNE IRRIGATION UNE GAS UNE ELECTRIC UNE (UNDERGROUND) ELECTRIC UNE (OVERHEAD) COMMUNICATION LINE FIBER OPTIC UNE MISCELLANEOUS/UNKNOWN LINE PROPOSED MAJOR CONTOUR PROPOSED MINOR CONTOUR __A CROSS SECTION CALL OUT SEEDING SPEC FOR UPLAND AREAS COMMON NAME (VARIETY) SCIENTIFIC NAME LBS PLS/ACRE SAND BLUESTEM SAND LOVECRASS INDIAN RICEGRASS PRAIRIE SANDREED GREEN NEEDLEGRASS UTTLE BLUESTEM YELLOW INDIANGRASS SWITCHEDOASS SAND DROPSEED (CHAMP CHET) (BEND NATIVE NE27) (NEZPAR RIMROCK) (GOSHEN) (LODORM) (BLAZE CIMARRON CAMPER) (CHEYENNE HOLT SCOUT) (BLACKWELL NEBRASKA 28) 25 3 0 75 15 0 75 05 15 05 TOTAL LBS PER ACRE 12 0 o 09' salon« 0901 at PARCO / I/l106COLO1I AN4O.L0 M22t O ROM LOGS MIND Cl/4 COI SEC6 2 I/O .ALUMNI, CID STAMPED 30111 .00048117 Nut a !LOW LOGS AIKOONFID GSLAVE 22140 ELECIMC O6AEM 1CCL01ALY 1x96 LLC AMT40l / t21lo6O]2Ytl 10019 5 5♦65 COM, LNT IL2Esr10se 1'; (Y VEST 6 ROM) MAID 14107 PLASTIC COP STAYP1O 9444 Ih gf E Ij II i I ≥Ii I II I II �1 II ICI Ii II CAP STAMPED 'EPP A�40GA/IES PC 2O04 I i rf u14515 401401140 MOLLY ONICI2 rots AMC LLC allot /121I070 006 F ACCESS ROAD VARIES IN LOCATION R OR EASEMENT (OVERBURDEN • 1 )( -ALLUVIALSAND & •- �� GRAVEL - •- •- :• • •- -- - -- - ///\\\/\\//\\\///V/V \\\/CLAYSTNE/OERO(////\\\///\\\//V//>///\\\///\\\//\ ICU EI1CM.C SEED WITH SPECIFIED SEED MIX THIS SHEET 0 _ CREST 0YC¢M WIT 011117 IC Et AL Mira C.V., LAN I6fMONE O ,06 0401.4 FMK LLC ROTA P211'07/0046 WATER SURFACE SLURRY LINED RECLAMATION DETAIL NOT TO SCALE 0O941V: L4f00 WILLEY ROO-1n PARES /12110$000235 --=-- -4447- `.T // fJ fr-l/W e 023-6261-601/ FOUND VOLE PLASTIC CID IUOORU EOM NO fE2AR ,ILEOOPC AN40V 60 Glf 44+040120 C45 MIN) MILR ROOM., /I PlCL.Wtm L4YD POND AREA 115 AC.FES +/- Awa1M/ OZII006.0J K!1 11/111024 0.154 UC AlOUL / i 107W 47 IELICIAVC e LI M 01600 14.1 -LEY RIB' CO 844410 /Ill 701WO42 4YS1YNn4L Car FolIC 21/4 CCB 4(216 3 I/O OLUIOMUN LINION. 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STA 0+00 00 EL 4740 51 J/7 1V RECLA/M/V/NE SLOPE STA 0+94 69 EL 4738 43 \_STA 2+3162 EL ^783 CC _7 STA 3+26 31 J `Gas / f EL. 4784 00 SLURRY WALL BEDROCK 1 ft ft ftt/f1lt//till/Tt 1tYYTTtt/f/ft 111TTttrrY t11f/YflftYft Yt t 1lf ft rt ft t ft rt7 STA 3+26 31 54 ls 66.3 G45 7ELE 6114 STA 3+8919 EL 4734 27 ftttYt/ffiYlt1111t1 STA 3+9245 EL. 4/84 00 STA 3+9568 �EL 4784 00 ONE 4+50 STA 4+5350 EL 4785 00 STA 4+21 41 EL 4783 99 STA 5+00 25 �EL 4785 21 HOUSE El 0+00 0+50 1+00 1+50 2+00 2+50 STA 2+62 29 EL 4789 89 3+00 STA 2+70 24 EL 4780 71 3+50 EXLSANG GRADE JH IV RECLAIM/3ONE ScOr£ STA 1+42 26 EL 4794 11 STA 2+01 82 STA 2+30 16 EL 479500—\\__ EL 4797 00 k-mn STA 1+70 38 EL 4793 ST +1228 EL 479] 00 T" 2. 7c 232 _STA 1+92 84 EL 4788 00 EL 4794 00 STA 2+90 36 EL 4787 00 STA 3+00 38 EL 4786 99 SLURRY WALL — j TA STA 0+00 00 STA 0+28 32 BEDROCK \T 5 3+00 38 EL 475649 EL 475 • — EL 4757 91 ffffff 1tf//Yf1YY1ltttfr1YY/llttttf/tt tttttft//1trltI1/fttttt1r1111tt111YhtritrtY111f1111111f111 STA 1+70 38 4820 4810 4800 4790 4780 4770 4760 4750 EL 4753 12 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4810' 4800 4790 4780 4770 4760 4750 4740 4+00 CROSS SECTION EX/SANG GRADE STA 1+57 83 EL 4785 40 STA 2+35 66 STA 2+65 76 EL 4785 81- \ EL 4786 00-\ G45 WELL .M1 714 RECLAIM/M/NE SLOPE SLURRY WALL 3197 STA 2+72 63 EL 4786 00 STA 0+00 00 STA 0+38 08 EL 9746 32 EL 474 BEDROCK STA 2+35 66 STA 3+00 10 • 1/1/YYr1111////tfIIIIIT1T1f1T11T11111� f11f11T1YT111/ltfff15T93 TYr ftYTftrfYYYYf1t11f1Lft73930 STA 3+65 972 \STA 3+68 56 Fl 4A AA EL 4705 31 STA 4+47 44 EL 4784 90 1+50 0+00 0+50 1+00 2+00 2+50 3+00 3+50 STA 2+66 47 STA 1+94 48 STA 2+28 87 EL 4801 00 EL 4795 88 EL 4796 03 "sr STA 3+00 41 STA 3+23 04 STA 1+65 99 p[ EL 4801 02 _- EL 4801 00 EL 4796 00 5TA 2+43 73 I-,vw� -..____I 7EL 4796 00 US HWY 85 I \50U771 BOUND STA 2+3456 STa 1+94 3564 SL 479600 - - BEDROCK EL 4763 34 �. STA 2+88 13 STA 0+00 00 STA 0+74 02 TELEPHONE LINES ��EL 4770 82 EL 4763 B�,r,1i EL 476 1tf11111Y1tttf1lttfYflflY /1t11Yttftrtl Il t1111tt111111T11t/Yt111t1Y1 SCURRY WALL EX/517NC GRADE -TN IV RECLAIM/MINE SLOPE 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4820 4810 4800 4790 4780 4770 4760 4750 4+00 4+50 CROSS SECTION 4800 4790 4780 4770 4760 4750 4740 4730' 4720 5+00 5+50 CROSS SECTION p u to N NOTI 6+00 4800 4790 4780 4770 4760 4750 4740 4730 4720 CROSS SECTION CIVIL RES4AURCES, LLC 323 5th STREET P 0 Box 680 FREDERICK CO 80530 303 833 1416 WWW W CIVILRESOURCES COM HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE Co 60651 970 534 0917 CONTACT DHF HUNT WATER, LLC GRAVEL MINE WELD COUNTY, CO PLATTEVILLE, CO REVISIONS NO DESCRIPTION DATE DESIGNED BY ARR DRAWN BY EB8- CHECKED BY ARR JOB NO 105 012 01 DWG NAME.COVER EKSTCOND DHF DWG DATE Nor 2018 SCALE AS NOTED AS NOTED SECTIONS -1 SHEET 5 CIVIL RES°DURCES, LLC 323 5th STREET P 0 Box 680 FREDERICK CO 80530 303 833 1416 WWW CIVILRESOURCES COM HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE CO 80651 970 534 0917 CONTACT DHF J \HallIrwm-1051DHF-Gravel Mine\Drawings\SHEETS\COVER_EXSTCOND_DHF dwg, 5/21/2018 10 18 49 AM 4820 4810 4800 4790 4780 4770 4760 4750 4800 4790' 4780 4770 4760' 4750 4740 4730 4720' TELEPHONE STA 0+5045 EL 4802 58 \ - - - PERMiI' BOUNDARY" INLEPHONE MM. 9040 EX/S77/VG GRADE STA 2+94 01 EL 4800 00 - TELEPHONE PROPOSED BERM — STA 2+94 03 FL 481QQQ_ J4 II/ MINE & RECLAALgnON SLOPE STA 3+99 98 EL 4795 14] 160r - - STA 2+68 68 LSTA 3+39 29 - EL 4794 90 EL 4784 95 YYYY111Y1YYY111Y,1171YY1Y1YYY11YYY1YYr111f1111f1rf7YY1,111,11111111 fYYYYYYYY111111IY1Y,111111,YYYYfffffYfYYYYYY7fYY11ffYYY11Y11YYYY11777777 BEDROCK - a ER 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4820 4810 4800 4790 4780 4770 4760 4750 CROSS SECTION I 01 Ieo) STA 0+00 00 EL 4742 89 - EXIS17NG GRADE STA 2+8160 - GAS EL 4787 68 - JH IV MINE & RECLAMAIN)N SLOPE +43 53 - 4 YY1f11YfY7YYYYYYY>YYYYY7 STA 4+80 30 EL 4787 47 1 STA 5+4012 EL 4787 58 - STA I BEDROCK STA 4+80 38 EL 47 - - - — - - ----- - - EL 473462 1171111111 SLURRY WALL STA 5+4012 EL 4737 98 1Y11Y7Y11Y11111111r- a 2+50 0+00 0+50 1+00 1+50 2+00 3+00 3+50 4+00 4+50 5+00 5+50 4800 4790 4780' 4770' 4760' 4750 4740 4730 4720 CROSS SECTION ( 01 IIZE) HUNT WATER, LLC GRAVEL MINE REVISIONS NO DESCRIPTION DATE DESIGNED BY 555 DRAWN BY .X22 CHECKED BY _KM_ IOB NO 105 012 01 DWG NAME.COVER EOSTCOND DHF DWG DATE .0 SCALE AS NOTED AS NOTED -SECTION-2 SHEET 6 EXHIBIT G - WATER INFORMATION This information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.7 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: (a) Locate on the map (Exhibit C) tributary water courses, wells, springs, stock water ponds, reservoirs and ditches As shown on the existing conditions map. - There are various private concrete lined irrigation laterals. - There are two private irrigation ponds for use in the center pivot system. - There are 2 irrigation wells on the west side of the site (owner David Hunt). - There is one recharge/augmentation pond in the southwest corner of the site. (b) Identify all known aquifers The Site is underlain by the South Platte alluvial aquifer. (c) Show how water from dewatering operations or runoff from disturbed areas, piled material and operating surfaces will be managed to protect against pollution of either surface or groundwater both during and after the operation. Please refer to the Mining Plan Map in Exhibit C of this application. Mine areas will not be dewatered for mining purposes. As a result of the slurry wall leak test water might be discharged offsite. Uncontrolled releases of surface water in disturbed areas will not occur. Stormwater collected in the active mine area will be managed through the dewatering system. (d) Estimate project water requirements including flow rates and annual volumes for the development, mining and reclamation phases of the project. Projected Use And Consumption: Mine areas will not be dewatered for mining purposes and no onsite water will be used in washing the product as all product will be dry screened. dust suppression will be supplied from other sources, so as trucked in water or augmentation water owned by DHF. Mining Production & Operations: DHF expects to extract a maximum of 400,000 tons annually of aggregate material from the site. This material will not contain groundwater or be washed a excavation will not go below the groundwater depth of 15 feet. (e) Indicate the projected amounts of the water sources to supply project water requirements Replacement Water: replacement water is not required as no groundwater will be used onsite. Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit G -1 (0 Affirmatively state that the Applicant has acquired or applied for a National Pollutant Discharge Elimination System permit from the Water Quality Control Division The Operator will apply for a National Pollutant Discharge Elimination System (NPDES) permit from the Water Quality Control Division of the Colorado Department of Public Health and Environment prior to discharging water from the site. Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Application Exhibit G - 2 EXHIBIT H - WILDLIFE INFORMATION The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.8 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: (1) The Operator/Applicant shall include in this Exhibit, a description of the game and non game resources on and in the vicinity of the application area, including; a) A description of the significant wildlife resources on the affected land; This information is provided in the attached Exhibit H Wildlife Information, prepared by Pinyon Environmental Engineering, located at 3222 S Vance St #200, Lakewood, CO 80227 based on a site investigation conducted on April 23, 2018. b) Seasonal use of the area; This information is provided in the attached Exhibit H Wildlife Information, prepared by Pinyon Environmental Engineering, located at 3222 S Vance St #200, Lakewood, CO 80227 based on a site investigation conducted on April 23, 2018. c) Threatened or endangered species; The attached Pinyon Environmental Engineering Exhibit H Wildlife Information included an evaluation for threatened and endangered species. Their conclusions are documented in the attached report. d) General effect during and after the proposed operation on the existing wildlife of the area; This information is provided in the attached Exhibit H Wildlife Information, prepared by Pinyon Environmental Engineering, located at 3222 S Vance St #200, Lakewood, CO 80227 based on a site investigation conducted on April 23, 2018. Hunt Water LLC - Gravel Mine — MLRB 112 Permit Amendment Application Exhibit H -1 Pinon Environmental, Inc Corporate Headquarters 3222 South Vance Street, Suite 200, Lakewood. Co 80227 T: 303.980.5200 F: 303.980.0089 www.pinyon-env.com Biological Resources Technical Memorandum Date: April 23, 2018 To: Andy Rodriguez, Civil Resources, LLC From: Brandee Anderson, Biologist — Pinyon Environmental, Inc. Subject: Biological Resources Report and Informal Wetland Delineation, Hunt Slurry Wall Proposed Alignment, Weld County, Colorado Introduction Civil Resources, LLC (Civil Resources) contracted Pinyon Environmental, Inc. (Pinyon), to conduct a biological resources assessment and informal delineation of potential Waters of the U.S. (WUS), including wetlands, for the Hunt Slurry Wall Proposed Alignment Project (project). The purpose of this project is to install a slurry wall in an area currently being used as an agricultural field. The proposed project is located approximately three miles south of Gilcrest and approximately three miles north of Platteville in Weld County, Colorado (Figure I). The study area is approximately 157 acres of land currently used primarily for agricultural purposes (sod production). Some structures related to oil and gas production, as well as one commercial business, are also located within the study area. This Biological Resources Technical Memorandum (memo) summarizes the existing biological resources and potential wetland areas within the study area. Project Location The proposed project is located near the intersection of Highway (HWY) 85 and County Road (CR) 36 (Figure I and Figure 2). The study area is divided and occurs both east and west of HWY 85. The approximate geographical location of the project is centered at decimal degree coordinates (World Geodetic System of 1984 [WGS84]) latitude 40.250345°, -104.813634° longitude. The project is located in Sections 5 and 6, Township 3 North, Range 66 West of the 6th Principal Meridian on the United States Geological Survey (USGS) Milliken and Platteville, Colorado 7.5 -Minute Quadrangles (USGS, I969a and I969b, respectively). The topography of the study area is mostly flat, with an approximate elevation of 4,800 feet above mean sea level (msl). Methods Pinyon biologist Brandee Anderson visited the site on March 25, 2018, to assess the study area for biological resources and informally delineate potential wetlands. Ms. Anderson surveyed the study area for protected species and their habitats, including threatened and endangered species; raptors and other migratory birds; and other biological resources. During the site visit, a Trimble Geo XH-6000 global positioning system (GPS) unit was used to record relevant information. Notes and photographs were taken to record field conditions. A photographic log is included in the attachments. Additionally, Ms. Anderson conducted an informal delineation of potential WUS, including potential wetland areas, by using the presence of hydrophytic wetland vegetation indicators for the presence of hydric soils and wetland hydrology. Wetland vegetation is assigned indicator ratings by the United States Army Corps of Pinyon Engineers (USACE) based on percentages representing the frequency that a species occurs in a wetland (Lichvar et al. 2012). Wetland species are ranked: • obligate (OBL), occur almost always under natural conditions in wetlands (99%); • facultative wetland (FACVV), usually occur in wetlands but occasionally found in non -wetlands (67- 99%); • facultative (FAC), equally likely to occur in wetlands and non -wetlands (34-66%); • facultative uplands (FACU), usually occur in non -wetlands but occasionally found in wetlands (I-33%); • and upland (UPL), may occur in wetlands in another region, but occur almost always under natural conditions in non -wetlands in the region specified (I %) (Lichvar et al., 2012; Lichvar et al., 2016). Any ranking of FAC or higher is considered potential wetland vegetation. Wetland vegetation indicator ratings vary region to region; based on the location of the study area the Great Plains Region vegetation indicators were used. Results Genera/ Habitat The majority of the study area consists of fallow and seeded sod fields and upland vegetation (Photos I and 2 in the Photographic Log). Numerous man-made irrigation ponds and irrigation ditches are located throughout the study area. Wetland vegetation is present in narrow fringes around the man-made ponds. The dominant land type/use in and adjacent to the study area is cropland and pastureland associated with rural agricultural properties. Some structures related to oil and gas production, as well as one commercial business, are also located within the study area. Given the presence of the fallow fields, irrigation ponds and ditches, structures pertaining to oil and gas extraction, and a commercial business within the study area; natural vegetation, soils, and hydrology have been altered by filling, grading, and improvement activities in the past. Most upland areas in the study area are fallow or seeded sod fields. Due to the nature of sod production (i.e., grass is not allowed to go to seed) and because some fields were fallow, grasses were not in a phenological state to positively identify. Based on Green Valley Turf Company's website, grasses in the study area are likely Kentucky blue grass (Poa pratensis), Texas bluegrass (Poa arachnifera), tall fescue (Festuca arundinacea), and/or buffalograss (Bouteloua dactyloides) (Green Valley Turf Company, 2018). Based on the vegetative morphology of the species in the study area, tall fescue is likely the species present. Other upland areas in the study area are primarily dominated by the grass smooth brome (Bromus inermis) and numerous weedy species such as Russian thistle (Salsola tragus), redstem stork's -bill (Erodium cicutarium; Colorado Department of Agriculture List C noxious weed, no managemen: required), purple mustard (Chorispora tenella), and shepherd's purse (Capsella bursa-pastoris) (CDA, 2018). Wetland areas were identified throughout the study area and wetland vegetation indicators are discussed further below. Federally Listed Species Based on a review of the United Stated Fish and Wildlife Service (USFWS) online Information for Planning and Consultation (IPaC) System, there are nine federally listed species with the potential to occur in, or be impacted by, a project located in Weld County (USFWS, 2018a). Of the nine species, five species are included because they occur downstream of the study area along the Platte and/or Missouri Rivers and could be impacted by projects that would result in water depletions to their tributaries. These five species include the Interior Least Tern (Sternu/a antillarum), pallid sturgeon Biological Resources Technical Memorandum Hunt Slurry Wall Proposed Alignment April 23, 2018 2 Pinyin (Scaphirhynchus albus), Piping Plover (Charadrius melodus), Whooping Crane (Grus americana), and western prairie fringed orchid (Platanthera praeclara). No natural waterways (streams, rivers, etc.) are located in the study area. One man-made irrigation ditch, Evans No. 2 Ditch, is mapped in the study area; however, was not noted during the site visit and may be diverted underground (USGS, I969a; USGS, 1969b; USFWS, 2018b). Numerous unmapped, man-made ponds and concrete lined irrigation ditches were noted in the study area. Although a review of relevant data did not elucidate the hydrologic source of these irrigation ditches, it is likely that they have a connection to the South Platte River. Final design has not yet been completed for this project. Should proposed project activities cause depletions to these waterways, consultation with the USFWS for the above species may be required. However, if no water depletions are anticipated, this project will have no effect on these downstream species, which are not discussed further in this memo. The four -remaining species are the Preble's meadow jumping mouse (Zapus hudsonius preblei), Mexican Spotted Owl (Strix occidentolis lucida), Colorado butterfly plant (Oenothera coloradensis), and Ute ladies' -tresses orchid (Spiranthes diluvialis). The habitat and distribution of each of these species were reviewed, and the potential for occurrence for each species was assessed based on the conditions at the study area (CPW, 2016). Based on the habitat review, the study area lacks requisite habitat characteristics to support these four species; therefore, these species have no potential to occur in, or be affected by, the project. The proposed project will have no effect on these four species. Migratory Birds Due to agricultural use being the primary land use in the study area and in adjacent areas, very few trees or shrubs that may provide habitat for nesting raptors and other small migratory birds are present in or near the study area. However, one raptor was noted in the study area, likely a Northern Harrier (Circus cyaneus) based on flight behavior, and one potential raptor nest was noted southeast of the study area (Figure 2; Photo 3 in the Photographic Log). Small, discrete patches of trees and shrubs do occur throughout the study area and within a 0.5 -mile buffer of the study area. These areas may provide suitable habitat for migratory birds. Although the study area itself lacks suitable Bald Eagle (Haliaeetus leucocephalus) habitat, Bald Eagle habitat is mapped all along the South Platter River. Mapped habitat includes nest sites, roost sites, communal roosts sites, summer and winter foraging habitat, and winter concentration zones, all approximately 2-3 miles west of the study area (CPW, 20 I 6). Additionally, the study area is located within the Bald Eagles overall winter range. Because the study area lacks suitable habitat, such as numerous large trees and/or waterways, and is located next to a busy highway, it is unlikely that Bald Eagles would occur in the study area or affected by project activities. General Wildlife No black -tailed prairie dogs (Cynomys ludovicianus) or signs of other sensitive wildlife species not previously mentioned were noted in the study area. Waters of the U.S., Including Wetland Areas The ordinary high water mark (OHWM) for nine open waters, all either man-made ponds or man-made irrigation ditches, were identified and mapped throughout the study area (Figure 2; Table I). A review of relevant data did not elucidate the hydrologic source of these ponds and irrigation ditches; however, it is likely that they have a connection to the South Platte River. The South Platte River is considered a traditional navigable water (TNW) by the USACE, and therefore is considered a jurisdictional WUS. If the man-made ponds and irrigation ditches located throughout the study area do have a significant nexus to the South Platte River, it is possible that the USACE may consider these open water features jurisdictional; however, only the USACE has the authority to determine what is considered jurisdictional. If project activities are anticipated to Biological Resources Technical Memorandum Hunt Slurry Wall Proposed Alignment April 23, 2018 3 Pinyon impact open waters, a Section 404 permit from the USACE may be required. Open waters delineated in the study area are described in Table I below. Table I Summary of WUS in the Study Area Open Waters (OW) including Location, Longitude' and Latitude Classification Acres Hydrology Y Source OW- Photo Photographic Log I; 4 in Southwestern portion area; -104.8192698° 40.2471777°, of the study Man-made Freshwater (mostly empty) Pond 2.7 Underground provide provide connectivity and OW hydrologic -2 between pipe appears to OW- I OW Photo Photographic Log -2; 5 in Southwestern Dortion area; -104.8174741° 40.2466909°, of the study Man-made Freshwater ( full of water) Pond 0.06 OW appears connectivity and pp -5; An to OW -2. underground provide between hydrologic OW- pipe I OW Photo Photographic Log -3; 6 in the 40.2494716°, -104.8147989° Central study portion of area; Man-made Freshwater (mostly empty) Pond 1.5 OW -4 OW Photo Photographic Log -4; 7 in East -1WY study and 85 portion parallel in area; the to of Man-made Ditch (not Irrigation flowing) 0.42 OW closed visit -5; the at the headgate time of was the site central :he 40.2487686°, -104.8146188° OW Photo Photographic Log -5; 8 in CR southern :he 40.2466201°, -104.8151816° North 36 study and in the portion area; parallel to of Man-made Ditch (flowing) Irrigation 0.18 Unknown OW Photo Photographic Log -6; 9 in Northern he 40.2537286°, -104.8124493° study area; portion of Man-made Freshwater (empty) Pond 0.I5 OW -7 OW Photo Photographic Log -7; I 0 in Northern the 40.2538516°, -104.81 study 1 1678° area; portion of Man-made Ditch (not Irrigation flowing) 0.15 Unknown OW Photo Photographic Log -8; I I in Southeastern portion area; 40.2469281°, -104.8107947° of the study Man-made Freshwater (full of water) Pond 0.08 OW -5 Biological Resources Technical Memorandum Hunt Slurry Wall Prc posed Alignment April 23, 2018 4 Pinyon n `41..0.Jtr• rc i OW -9; Central portion of Photo 12 in the of study HWY area east 85; Man-made Freshwater Pond 0.55 Unknown Photographic 40.2506217°, (mostly empty) Log -104.8105304° 'Approximate center pcint of wetland in World Geodetic System of 1984 (WGS84) Decimal Degrees Four wetland areas, identified by using only wetland vegetation indicators for the presence of hydric soils and wetland hydrology, were observed within the study area (Figure 2; Table 2). All potential wetland areas identified were palustrine emergent (PEM) wetlands, which means that they are dominated by herbaceous vegetation (Cowardin, et al., 1979). These potential wetlands were narrow fringes located along the edges man- made ponds. All potential wetland areas in the study area had vegetation ranging from OBL to UPL. Because vegetation only was used as the indicator of wetlands, the wetland areas identified in this memo are likely an overestimation of actual wetlands. Wetland areas identified in the study area are described in Table 2. Table 2 Summary Wetland Areas in the Study Area Wetland (WL) Areas including Longitude' Location, and Latitude Classification Cowardian 2 Acres Vegetation WL- Photo Photographic Log I ; 6 in g Located edge 40.2490535 -104.8150669° of along OW the -3; , PEM 0.14 Curlytop lapathi Pennsylvania (Polygonum OBL) fescue tail folium; (40%); (Setaria (FACU) knotweed pensylvanicum; o viridis; knotweed the OBL) and grasses UPL) (Polygonum or green tall (60%) fox WL-2; Photo Photographic Log 9 in Located edge 40.2537736°, -104.8124478° of along OW the -6; PEM 0.04 Broadleaf OBL) (UPL) (50%); (50%) cattail Green (Typha fox lati tail folio; WL-3; Photo Photographic Log I I in Located edge 40.2469188 -104.8107977° of along OW the -8; , PEM 0.05 Nebraska nebrascensis; sedge (80%); (20%) (Carex sedge smooth OBL) aquatilis; brome (Carex or water OBL) (UPL) WL-4; Photo Photographic Log 12 in Located edge 40.2505203°, -104.8106377° of along OW the -9; PEM 0.18 Curlytop Pennsylvania (40%); tail, (Elymus (60%) and tall slender trochycoulus; knotweed fescue, knotweed wheatgrass or green FACU) (OBL) fox 'Approximate center point of 2 Cowardin, et al., 1979, PEM—Pa/ustrine wetland in World Geodetic System of Emergent 1984 (WGS84) Decimal Degrees Biological Resources Technical Memorandum Hunt Slurry Wall Proposed Alignment April 23, 2018 5 Pinyin Conclusions and Recommendations The project design is in the preliminary stages, and impacts to biological resources, if any, are not yet known. Therefore, Pinyon recommends the following: • Threatened and Endangered species and their habitat does not occur in the study area. Therefore, the project will have no effect on federally listed species. No further coordination with the USFWS is anticipated. • Potential raptor and migratory bird nesting habitat was identified in the study area. The Migratory Bird Treaty Act (MBTA) and the Bald and Golden Eagle Protection Act (BGEPA) are both administered by the USFWS and protect nesting migratory birds and Bald and Gold Eagles respectively. If construction activities occur during the nesting season (generally April I — August 3 I ; although, raptors may nest as early as February), Pinyon recommends conducting pre -construction nest surveys. Depending on the outcome of the surveys, coordination with the USFWS or Colorado Parks and Wildlife (CPW) may be required. Due to the potential for MBTA constraints, it is recommended that the developer follow MBTA nest survey guidelines as outlined by CPW during the nesting season (CPW, 2008) (see included attachment's. • Potential jurisdictional WUS, including wetlands, were identified in the study area. The wetland delineation described in this memo is not a formal wetland delineation. As such, the data and results presented within this memo are for planning and avoidance purposes only and are not suitable for use in permitting documents. If project activities avoid all open waters and wetlands, the project is not likely to have impacts on theses resources. Pinyon recommends that formal wetland delineations are conducted as described in the USACE Wetland Delineation Manual and a Section 404 permit is obtained foe. any impacts to jurisdictional WUS, including wetlands, before any ground disturbance or fill activities occur (Environmental Laboratory, 1987; USACE, 2010). • If impacts to jurisdictional WUS, including wetlands, are anticipated from project activities, wetland impacts shculd be quantified. If impacts to WUS are less than 0.5 acre, it is anticipated that the project could be permitted under a USACE Nationwide Permit. An Individual Permit generally is required where impacts exceed 0.5 acre. However, other specific components of a project could trigger an Individual Permit (e.g., river channel realignment, construction of a drop structure, project type). An Individual Permit is typically a more difficult permit to obtain, because it requires Public Notice, an evaluation of alternatives, and more comprehensive mitigation planning. Only the USACE has the authority to make final determinations regarding jurisdiction, permitting, and mitigation. Limitations This memo was prepared by Pinyon, at the request of and for the sole benefit of Civil Resources, or any entity controlling, controlled by, or under common control with Civil Resources. The conclusions and recommendations offered in this report are based on the data obtained from a limited number of samples, within a prescribed study area as described in the text. Soil, hydrologic, vegetation, biological and ecological conditions typically vary even over short distances, by season, by elevation, and by meteorological conditions. Thus, the nature and extent of variations outside this biological investigation may not become evident except through further investigation. It is possible that ecological conditions may change from those observed, particularly over time. Biological Resources Technical Memorandum Hunt Slurry Wall Proposed Alignment April 23, 2018 6 I * Pinyon Attachments: Figure I. Project Location Figure 2. Biological Resources Photographic Log CPW's Recommended Buffer Zones and Seasonal Restrictions for Colorado Raptors References CDA, 2018. "Noxious weed species," Colorado Department of Agriculture. Available at: https://www.colorado.gov/pacific/agconservation/noxious-weed-species. Accessed March 2018. Cowardin, L.M., V. Carter V., F.C. Golet, E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Fish and Wildlife Service Report No. FWS/OBS/-79/3 I.Washington, D.C. CPW, 2008. "Recommended Buffer Zones and Seasonal Restrictions for Colorado Raptors," Colorado Parks and Wildlife, Revised February 2008. CPW, 2016. "Species Activity Data Shapefile Download," Colorado Parks and Wildlife, last modified September 14, 2016. Available at: http://www.arcgis.com/home/search.html?q=Colorado%2OParks%2Oand%2OWildlife&t=groups. Accessed March 2018. Environmental Laboratory, 1987. "Corps of Engineers Wetlands Delineation Manual," Technical Report Y-8 I - I , U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. Green Valley Turf Company, 2018. "Growers of Premium Quality Sods Blended for Colorado," Green Valley Turf Company. Available at: https://gvt.net/. Accessed April 2018. 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: I -17. Published 28 April 20 16. ISSN 2 153 733X. Lichvar, R.W., N.C. Melvin, M.L. Butterwick, and W.N. Kirchner, 2012. "The National Wetland Plant List Indicator Rating," USACE. Published July 2012. USACE, 2010. 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- I 0-3. Vicksburg, MS: U.S. Army Engineer Research and Development Center. U SFWS, 2018a. "IPaC- Information, Planning and Conservation System," United States Fish and Wildlife Service. Available at: http://ecos.fws.gov/ipac/. Accessed March 2018. U SFWS, 2018b. "National Wetlands Inventory Wetlands Mapper," United States Fish and Wildlife Service. Available at: https://www.fws.gov/wetlands/data/mapper.html. Accessed March 2018. U SGS, 1969a. "7.5 -Minute Topographic Map, Milliken, Colorado," United States Geological Survey, 1950. Photorevised in 1969. Biological Resources Technical Memorandum Hunt Slurry Wall Proposed Alignment April 23, 2018 7 0 Pinyon USGS, I969b. "7.5 -Minute Topographic Map, Platteville, Colorado," United States Geological Survey, 1950. Photorevised in 1969. Biological Resources Technical Memorandum Hunt Slurry Wall Proposed Alignment April 23, 2018 8 Service Layer Credits:Sources: Esri, HERE, DeLol Cc> 2018 Microsoft Corporation © 2018 1,;_i Document Path: Z:\PROIECTS\2018\1 1888501 Hunt Slurry Wall Proposed Alignment\ Figures WrcMaplMXDs\B1O02_BR.mxd ti: USGS. Inter -map, INCREMENT P kCan,Esri Ja be rO CNES (20181 Distribution Al. s DS © ` panStreetMap contributors. and the GIS User Community BIOLOGICAL RESOURCES Hunt Slurry Wall Proposed Alignment Near the Intersection of County Roads 25.5 and 36 Weld County, Colorado Well `4769 36 Service Layer Credits,.. •djjrces: Esri, HERE, DeLorm:. USGS. Intermap, IN Copyright:© 2O IAA .3al Geographic Society. i-c •ed Site Location: Sections 5 and 6,Township 3N, Range 66W, 6th Principal Meridian Pinyon Project Number: I / 18-885-01.8000 Document Path: 11PINYON IOlcompany2\PROJECTS120I8`.I 1888501 Hunt Slurry Wall Proposed AfienmentlRvures\ArcMao1MXDsl8IOOI PLmxd REMENT P. NR 479 apart METI. Es 4768 I hina (Hong Kong). Esri Korea, Esri (Thailand). Mapmylndia. NGCC. © OpenStreetMap co tributors, and the G;Us:r Community en NO0 C3 48.31 4p4-832 Legend Study Area USGS 7.5'Topographic Maps Milliken, Colorado 1950 (Revised 1965); Platteville, Colorado 1949 (Revised 1969) 0 1,000 2,000 Feet P myon PROJECT LOCATION Hunt S/urry Wall Proposed Alignment Near the Intersection of County Roads 25.5 and 36 Weld County, Colorado Drawn By: PJW Reviewed By: BCA Figure: I Date: 3/26/2018 Pinyon Photo I . View of fallow sod field (left) and upland vegetation (right) characteristic of the study area. Photo taken east of Highway (HWY) 85, facing south. a. Ira ' l•�� ,0 ilgt _ .1 ' .M a; S ♦ Photo 2. View of seeded sod field characteristic of the study area. Photo taken west of HWY 85 from Country Road (CR) 25 '/2, facing north. .s1��• pw xis% ` •i MY ; . e. a__ S. d• Hunt Slurry Wall Proposed Alignment Photographic Log Photos taken March 25, 2018 Photo 3. View of potential raptor nest noted southeast of the study area. Photo taken east of HWY 85 from CR 36, facing east. Photo 4. View of Open Water (OW) I , facing west. Hunt Slurry Wall Proposed Alignment Photographic Log Photos taken March 25, 2018 Photo 5. View of OW -2, facing east. Photo 6. View of OW -3 and WL- I , facing south. WL- l delineated based on presence of a species of knotweed, likely curlytop knotweed (Polygonum lapachi folium; OBL) or Pennsylvania knotweed (Polygonum pens ylvanicum; OBL). Hunt Slurry Wall Proposed Alignment Photographic Log Photos taken March 25, 2018 Pinyon Photo 9. View of OW -6 and WL- 2, facing west. WL-2 was delineated on the p-esence of broadleaf cattail (Typha latifolia; OBL). Photo 10. View of OW -7, facing west. Hunt Slurry Wall Proposed Alignment Photographic Log Photos taken March 25, 2018 ?;I Photo I. View of O\V-8 and WL-3, facing north. WL-3 was delineated based on the presence of a sedge species, likely Nebraska sedge (Carex nebrascensis; OBL) or water sedge (Carex aquatilis; OBL). Photo 12. View of OW -9 and WL 4, facing north. WL-4 was d el i r eated based on the presence of a species of knotweed, likely curlytop knotweed or Pennsylvania knotweed. Hunt Slurry Wall Proposed Alignment Photographic Log Photos taken March 25, 2018 EXHIBIT 9 - SOILS INFORMATION The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6 4 9 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations (1) In consultation with the Soil Conservation Service or other qualified person, the soils are shown the Mining Plan Exhibit and attached to herein. The soil types on the site are shown on the Mining Plan Map Hunt Water, LLC- Gravel Mine — MLRB 112 Permit Amendment Application Exhibit l -1 ,` 40° 15'19"N 400 14' 41" N 8 104' 49 28' W CO N v 0 515000 I 515100 I 515200 I 515300 515400 515500 Soil Map Weld County, Colorado, Southern Part 515600 515700 515800 515900 516000 516100 51620 516300 516400 516500 516600 I 516700 I I I •I I I 1 I I I I I I I I I I I 515000 515100 515200 515300 515400 515500 515600 515700 515800 515900 516000 516100 516200 516300 516400 516500 516600 516700 Map Scale: 1:8,350 if printed on A landscape (11" x 8.5") sheet. N 0 100 200 400 Meters 600 Feet 0 400 800 1600 2400 Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 13N WGS84 8 40° 15'19"N 400 14' 41" N USDA Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 4/18/2018 Page 1 of 3 Soil Map —Weld County, Colorado, Southern Part MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils • fs� X 0 X 0 A, 0 0 411. 3) 0 Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot • Spoil Area a Stony Spot tob Very Stony Spot 7 Wet Spot • Other Special Line Features Water Features Streams and Canals Transportation 4-1-F Rails 0.4/ Interstate Highways Iwo US Routes ▪ Major Roads Local Roads Background . Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Weld County, Colorado, Southern Part Survey Area Data: Version 16, Oct 10, 2017 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Sep 20, 2015 —Oct 15, 2016 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. USDA Natural Resources 2100 Conservation Service Web Soil Survey National Cooperative Soil Survey 4/18/2018 Page 2 of 3 Soil Map —Weld County, Colorado, Southern Part Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 1 , Altvan loam, 0 to 1 percent slopes 8.1 2.6% 21 Dacono clay loam, 0 to 1 percent slopes 15.8 5.0% 29 Julesburg sandy loam, 0 to 1 percent slopes 84.3 26.8% 30 Julesburg sandy loam, 1 to 3 percent slopes 7.4 2.4% 35 Loup-Boel loamy sands, 0 to 3 percent slopes 1.2 0.4% 44 Olney loamy sand, 1 to 3 percent slopes 1.2 0.4% 47 Olney fine sandy loam, 1 to 3 percent slopes 19.8 6.3% 69 Valent sand, 0 to 3 percent slopes 37.8 12.0% 72 Vona loamy sand, 0 to 3 percent slopes 68.7 21.9% 75 Vona sandy loam, 0 to 1 percent slopes 56.1 17.9% 76 Vona sandy loam, 1 to 3 percent slopes 14.1 4.5% Totals for Area of Interest 314.4 100.0% USDA Natural Resources Web Soil Survey Conservation Service National Cooperative Soil Survey 4/18/2018 Page 3 of 3 EXHIBIT J - VEGETATION INFORMATION The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.10 of the Cobrado Mined Land Reclamation Board Construction Material Rules and Regulations: (a) Description of present vegetation types including estimates of cover and height of principal species in each life -form represented; This information is provided in the attached Exhibit H Wildlife Information, prepared by Pinyon Environmental, 3222 S. Vance St, Unit 200, Lakewood, CO, 80227 (b) Relationship of present vegetation to soil types; This information is provided in the attached Exhibit H Wildlife Information, prepared by Pinyon Environmental, 3222 S. Vance St, Unit 200, Lakewood, CO, 80227. (c) Estimates of annual production and carrying capacity if the choice for reclamation is for range or agriculture. Non -applicable. The proposed reclamation is for a water storage reservoir. Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Amendment Application Exhibit J -1 V EXHIBIT K - CLIMATE INFORMATION The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.11 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: Provide a description of the significant climatological factors for the locality. This property is in a semi -arid continental climate strongly influenced by the Rocky Mountains. The area is usually warm in the summer with frequent hot days. In winter, periods of very cold weather are caused by arctic air moving in from the north or northwest. Milder periods occur when westerly winds are warmed as they move down slope off of the mountains to the east. Weather monitoring data is not available from the site. The nearest weather monitoring station is at Ft. Lupton and Brighton, Colorado. Data is collected from the Western Regional Climate Center. The table below lists the mean monthly temperature, and average total precipitation on a monthly and annual basis for the period of record from January 1, 1950 to December 31, 2000. Most of the precipitation occurs as rainfall during the warmer part of the year with the heaviest rainfalls in the late spring and early summer. Winter snowfall is frequent but the snowcover usually melts quickly during the milder periods. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Mean Monthly Temperature (F) 28.0 32.9 39.1 48.1 57.7 67.3 72.8 70.7 61.9 50.8 37.1 29.5 49.7 Average Total Precipitation (in.) 0.44 0.39 1.04 1.44 2.12 1.63 1.44 1.39 1.16 0.83 0.69 0.42 12.99 Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit K -1 a EXHIBIT L - RECLAMATION COSTS The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.12 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: All Phases have approximately the same area that will be disturbed at one time, therefore this area is used to calculate the potential reclamation liability. • West Phase: Mining will begin in the north and progress south. It should take approximately 2 years. 100% mined and 100% reclaimed. This phase will be mined at the final shoreline reclamation slope (3H:1V). This phase will require final grading, topsoil placement, seed and mulch. • East Phase: Mining will begin in the north and progress south. It should take approximately 1 years. 100% mined and 100% reclaimed. This phase will be mined at the final shoreline reclamation slope (3H:1V). This phase will require final grading, topsoil placement, seed and mulch. • The slurry wall is proposed to be installed prior to exposure of groundwater. Please refer to the attached table for estimates of quantities and associated costs. Hunt Water, LLC —Gravel Mine — MLRB 112 Permit Application Exhibit L -1 Attachment for Exhibit L Hunt Water, LLC - Gravel Mine - Reclamation Cost Estimate Activity Quantity Units Unit Costs Cost A. West Phase 1 Final grade and place 6" of topsoil on the entire disturbed area 13,711 CY $ 1.05 $ 14,396.03 2 Seed and mulch 17.00 Acres $ 977.00 $ 16,609.00 3 Scarify ground 17.00 Acres $ 150.00 $ 2,550.00 Subtotal $ 33,555.03 B. East Phase 1 Final grade and place 6" of topsoil on the entire disturbed area 11,291 CY $1.05 $ 11,855.55 2 Seed and mulch 14.00 Acres $977.00 $ 13,678.00 3 Scarify ground 14.00 Acres $150.00 $ 2,100.00 Subtotal $ 27,633,55 C. Miscellaneous Phase 1 Final grade and place 6" of topsoil on the entire disturbed area 19,154 CY $1.05 $ 20,112.09 2 Seed and mulch 23.75 Acres $977.00 $ 23,203.75 3 Scarify ground 23.75 Acres $150.00 $ 3,562.50 Subtotal $ 46,878.34 E. Processing Area. Sand, gravel, concrete and asphalt materials are a commodity and therefore no cost would be incurred for reclamation. In addition, the mobile sales office and scale will have a value that would offset any cost for reclamation. 1 Move serge piles into settling/silt pond 1,000 CY $ 1.05 $ 1,050.00 2 Remove concrete pad for concrete plant 0 CY $ 65.00 $ - 3 Remove concrete pad for asphalt plant 0 CY $ 65.00 $ - 4 Remove concrete pad for recycling plant 0 CY $ 65.00 $ - 5 Remove concrete footings for office 0 CY $ 65.00 $ - 6 Remove concrete base for scale 0 CY $ 65.00 $ - 7 Scarify ground 12.0 Acres $ 150.00 $ 1,800.00 8 Spread 6" topsoil 20,589 CY $ 1.05 $ 21,618.45 9 Seed and Mulch 25.5 Acres $ 800.00 $ 20,400.00 10 Remove Conveyor Crossing (WCR 25) 0.00 LS $ 10,000.00 $ - Subtotal $ 44,868.45 F. Slurry Wall - Assuming a total of 6540 If of wall, assumed depth of 42' + 3' into base 1 Excavation, Materials and Labor and Dewatering 294,300 Face Ft $ 4.00 $ 1,177,200.00 Subtotal $ 1,177,200.00 Total Disturbance Costs $ 1,330,135.37 Indirect Costs Overhead & Profit Performance Bond (2.02%) - Based on DRMS estimate $ 26,868.73 Performance Bond (3.07%) - Based on DRMS estimate $ 13,966.42 Job Superintendent (240 hours @ $75/hr) - Based on DRMS estimate $ 18,000.00 Contractor Mob and DeMob (3%) - Based on DRMS estimate $ 39,904.06 Contractor Overhead and Profit (10%) - Based on DRMS estimate $ 133,013.54 Subtotal $ 231,752.75 Contract Amount (direct + O & P) $ 1,561,888.12 Legal, Engineering & Project Management Financial warranty processing (legal/related costs) ($500) $ 500.00 Engineering Work and/or contract/bid preparation (4.25%) $ 66,380.25 Reclamation management and/or administration (5%) - Based on DRMS estimate $ 78,094.41 Contingency (3%) $ 39,904.06 Subtotal $ 184,878.71 Total Indirect Costs $ 416,631.47 Total Bond Amount $ 1,746x766 83 EXHIBIT M - OTHER PERMITS AND LICENSES The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.13 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: The Operator will apply for the following permits prior to mining: Colorado Department of Public Health and Environment • Air Pollution Emission Notice (APEN) Permit • Colorado Discharge Permit System (CDPS) and Storm Water Management Plan — Storm Water Only Colorado State Engineer's Office • Substitute Water Supply Plan (SWSP) — N/A, no exposed groundwater • Well Permit — N/A, no exposed groundwater • State Engineers Office — Dam Safety Letter CDOT • Access Permit Weld County • Use by Special Review Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit M -1 rt EXHIBIT N - SOURCE OF LEGAL RIGHT TO ENTER This information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.7 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations. Please refer to the attached legal right -to -enter documents. Permitee owns the land. See attached letter. Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Application Exhibit N -1 1r May 21,2018 David Hunt Property Owner RE: Legal Right to Enter Dear Mr. Hunt: In exchange for good and valuable consideration, in hand paid, David Hunt hereby grants to Hunt Water, LLC the right to enter into the real property situated between the towns of Platteville (to the south) and Gilcrest (to the northeast). More specifically, the site is within part of Section 6, Township 3 North, Range 66 West of the 6th Principal Meridian. The mine is in an area of irrigated agricultural land with common oil and gas wells and related infrastructure and is bound by Weld County Road (WCR) 36 on the south, WCR 25.5 on the west, agricultural land on the north, State Highway 60 on the east, and U.S. Highway 85 on the southwest. Refer to Exhibit A for full legal description. You and your officers, employees, contractors, and agents have permission to enter upon the Property for all purposes, including the exploration for gravel, sand and aggregate. We hereby confirm that you have authority and right to execute all documents required to apply for and obtain permits and the like to mine gravel, sand and aggregate on the Property. . David Hunt By: David Hunt STATE OF COLORADO ) ss. COUNTY OF WELD The foregoing instrument was acknowledged before me on , by David Hunt, as Owner of the property. Witness my hand and seal. My commission expires: Notary Public EXHIBIT A - LEGAL DESCRIPTION Property Description: LAND PARCEL DESCTRIPTION LAND PARCEL DESCTRIPTION THE SE 1/4 OF SECTION 6, TOWNSHIP 3 NORTH, RANGE 66 WEST OF THE 6TH P.M., COUNTY OF WELD, STATE OF COLORADO. EXCEPT THOSE PORTIONS CONVEYED IN DEEDS RECORDED JUNE 15, 1937 IN BOOK 1011 AT PAGE 463, NOVEMBER 27, 1957 IN BOOK 1490 AT PAGE 444 AND NOVEMBER 27, 1957 IN BOOK 1490 AT PAGE 446, AND EXCEPT AND PORTION OF SUBJECT PROPERTY LYING WITH THE RAILROAD RIGHT-OF-WAY ADJOINING HIGHWAY 85 ALONG THE EAST SIDE. NOTE: 1. THE ABOVE LEGAL CONTAINS LOT A, RECORDED EXEMPTION NO. 1211-06-4-RE1639, RECORDED NOVEMBER 1, 1996 AT RECEPTION NO. 2413556 AND LOTS A AND B, CORRECTED RECORDED EXEMPTION NO. 1211-06-4 RE -3994, RECORDED NOVEMBER 23, 2005 AT RECEPTION NO. 3342370. 2. THE PERMIT BOUNDARY EXCLUDES LOT A -RE -3994 EXHIBIT O - OWNERS OF RECORD OF AFFECTED LAND (SURFACE AREA) AND OWNERS OF SUBSTANCE TO BE MINED The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.15 of the Colorado Mined Land Reclamation Board Construction Material Rules and regulations: Owners of Surface Area and Owners of Substance to be mined The property and the substance to be mined are owned by: HUNT DAVID W HUNT KAYLEEN J 14460 COUNTY ROAD 40 PLATTEVILLE, CO 80651-8527 The following are Mineral Owners: HUNT DAVID W HUNT KAYLEEN J 14460 COUNTY ROAD 40 PLATTEVILLE, CO 80651-8527 Hunt Water, LLC - Gravel Mine — MLRB 112 Permit Amendment Application Exhibit 0 -1 jp EXHIBIT P - MUNICIPALITIES WITHIN Two MILES The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.16 of the Colorado Mined Land Reclamation Board Construction Material Rules and regulations: List any municipalities within two miles of the proposed mining operation and address of the general office: The Town Platteville is greater than 2 miles to the south. The Town of Gilcrest is greater than 2 miles to the north. Bestway Concrete & Aggregates —Lupton Meadows Gravel Mine — MLRB 112 Permit Amendment Application Exhibit P -1 EXHIBIT Q - PROOF OF MAILING OF NOTICES TO COUNTY COMMISSIONERS AND CONSERVATION DISTRICT The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.17 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: DHF —DHF Gravel Mine— MLRB 112 Permit Amendment Application Exhibit Q -1 EXHIBIT R - PROOF OF FILING WITH COUNTY CLERK OR RECORDER The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.18 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations. Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Amendment Application Exhibit R -1 EXHIBIT S - PERMANENT MAN-MADE STRUCTURES The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.4.19 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations. Where mining will adversely affect the stability of any significant, valuable or permanent man-made structure located within 200 feet of affected land, the applicant may either;; a) Provide a notarized agreement between the applicant and the person(s) having an interest in the structure, that the applicant is to provide compensation for any damage to the structure; or b) The applicant shall provide an appropriate engineering evaluation that demonstrates that such structure shall not be damaged by activities occurring at the mining operation: or c) Where the structure is a utility, the Applicant may supply a notarized letter stating that the mining and reclamation as proposed will have no negative effect on their utility. The known, permanent, man-made structures within 200 feet of the proposed mine areas are listed as follows: o Mcglothlin, residence building o Green Valley Turf, residence building o Fleming, James, storage buildings o CDOT, Storage & Garage buildings o Various buildings owned by land owner o Oil & Gas Facilities surrounding the site (Anadarko) o WCR 25.5 & ROW (Weld County Public Works) o Highway 85 (CDOT) o Rail Road (Union Pacific) o Suncor Gas Line o Private Irrigation Appurtenances (owned by land owner) o Overhead Power Line (North, South, East & West Boundary)(XCEL) o Power Line (Private) o 34-6 Well Head (Kerr-McGee/Anadarko) o 23-6 Well Head (Kerr-McGee/Anadarko) o 33-6A Well Head (Kerr-McGee/Anadarko) o 25-6 Well Head (Kerr-McGee/Anadarko) o 24-6 (DIR) Well Head (Kerr-McGee/Anadarko) o 43-6 (DIR) Well Head (Kerr-McGee/Anadarko) o Telephone, west, south and by Hwy 85 (Century Link) o Telephone/Fiber by Rail Road ROW, east side (Level 3 Communications) Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Application Exhibit S -1 Please refer to the attached engineering stability analysis that shows that structures shall not be damaged by activities occurring at the mining operation. Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Application Exhibit S - 2 STABILITY ANALYSIS Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Application May 13, 2018 Mr. David W. Hunt 1440 Weld County Road 40 Platteville, CO 80651 Re: Stability Analysis for the Hunt Water, LLC Gravel Mine, Dear Mr. Hunt: This letter has been prepared to address the Mined Land Reclamation Board (MLRB) Construction Materials Rule 6, Section 4, Subsection 19, Exhibit S - Permanent Man -Made Structures (6.4.19, Exhibit S) for the proposed DHF Gravel Mine located near the intersection of U.S. Highway 85 and State Highway 60 in Weld County, Colorado. This letter describes the project and slope stability analyses utilized to evaluate the minimum distance between the edge of mining and adjacent structures to avoid damage to the structure. The site is located between the towns of Platteville (to the south) and Gilcrest (to the northeast). More specifically, the site is within part of Section 6, Township 3 North, Range 66 West of the 6th Principal Meridian. The mine is in an area of irrigated agricultural land with common oil and gas wells and related infrastructure and is bound by Weld County Road (WCR) 36 on the south, WCR 25.5 on the west, agricultural land on the north, State Highway 60 on the east, and U.S. Highway 85 on the southwest. The site and vicinity are shown on Figure 1. The site will be mined in two cells. The main cell will be in parts mined above the bedrock and in some areas will be mined to the top of bedrock. Plans are to construct a vertical slurry wall around this cell with perimeter mine slope of 3:1 (horizontal to vertical), as indicated in the DRMS permit application. The second cell will be mined above the water table to a maximum depth of 10 feet and will also have a perimeter mine slope of 3H:1V. Based on the stability analyses, this report indicates that the setbacks and perimeter slopes in the mining plan are sufficient to protect structures within 200 feet of the permitted mining boundary. Actual setbacks may be greater due to permit limitations, zoning requirements, construction issues, agreements with owners, and extent of economically mineable aggregate or other issues. GEOLOGY The Site is located approximately 21 miles east of the eastern flank of the Rocky Mountain Front Range. Younger sedimentary strata dip eastward off the Pre -Cambrian igneous and metamorphic rocks that form the core of the Front Range into the Denver Structural Basin. The Denver Basin is an asymmetrical downwarp of sedimentary strata with a steeply dipping west limb and a gently dipping east limb. Bedrock does not crop out at the site, however regional geologic mapping of the area (Colton, 1978) indicates the near surface bedrock at the site is most likely the Laramie Formation. Colton (1978) describes the Laramie as mostly claystone, shale, sandy shale, and lenticular sandstone. The Lower Laramie is described as sandstone, sandy shale, and claystone with several coal beds. The regional mapping indicates the bedrock is overlain by the Broadway Alluvium. Colton (1978) describes the Broadway as sand and gravel deposited by the South Platte River and its tributaries that is terraced typically lying about 40 feet above major streams. Along the South Platte River, the Broadway is typically on the order of 35 feet thick but can range up to 125 feet thick. GEOTECHNICAL (CONDITIONS Based on the site investigations, the natural site stratigraphy generally consists of three main units: 1) Overburden generally consisting of near surface silty to clayey sand; 2) sand and gravel alluvial deposits that underlie the overburden Mr. David W. Hunt May 13, 2018 Page 2 and overlie the bedrock; 3) Bedrock usually consisting of claystone and sandstone that is commonly weathered in the top 1 to 2 feet and is commonly interbedded and interlaminated. Overburden The overburden is typically a silty sand that locally grades to a clayey sand that is non -plastic or of low plasticity typically ranging from 0 to 3.5 feet in thickness. This unit is usually slightly moist to moist, loose to medium dense with the top 6 to 8 inches containing significant organics. Of the overburden samples tested, the range of percent passing the No. 200 sieve ranged from 9.3% to 41.2% with an average of 24%. Atterberg Limits testing ranged from granular non -plastic to Liquid Limits of 29 and Plasticity Indices of 9. For samples that were not granular non -plastic, the average Liquid Limit was 23 and the average Plasticity Index was 6. Table 1.1 reports the laboratory test parameters. Sand & Gravel The sand and gravel is present throughout the site locally occurring at the surface, but typically underlying the overburden and overlying the bedrock. This unit typically consists of slightly silty, fine to medium grained sand overlying a fine to coarse grained sand and/or gravelly sand. Local clayey sand was encountered along the east side of the site. Silty, fine grained sands were also locally encountered directly overlying the bedrock. Where gravels were encountered, the size was typically 1/4 to 1/2 inches. This unit is typically medium dense but locally dense, but is also locally very loose to loose typically in siltier and clayey areas particularly below the water table. This deposit ranges in thickness from approximately 24 feet to 55 feet, averaging approximately 40 feet along the slurry wall alignment. The sands are relatively clean with fines content (silt and clay) generally ranging from 1.0 to 13.8 percent averaging 7.1 percent. Bedrock The bedrock encountered in the exploratory borings was generally weathered in the upper one to two feet typically became harder in unweathered zones. The bedrock consisted of claystone and sandstones that were commonly interbedded and intertaminated. Local lignite was also encountered. The average percent passing the minus No. 200 sieve ranges from 37.7% to 94.8% respectively with plasticity indices ranging from 34 to 54. Groundwater Groundwater was encountered in all of the borings at approximately 12 to 17 feet below ground surface. The groundwater levels will vary seasonally and will typically rise during the irrigation season and when recharge is applied. Groundwater will be controlled with the proposed below grade slurry wall and by pumping down the water level on the interior of the slurry wall. After slurry wall construction, groundwater mounding is anticipated on the upgradient (south and southeast) side of the site and a groundwater shadow (deeper water table) is anticipated on the downgradient (north and northwest) side the site. The shadowing effect may be limited by the groundwater recharge on the southwest part of the site a planned future groundwater recharge basin planned on the northwest part of the site. Mining will be above the water table in both cells. From a geotechnical standpoint, the sand and gravel will form the majority of the mine slopes. These soils are generally strong and stable, particularly when dewatered. Dry mining is planned in both cells as the slurry wall will control water level in the main cell and mining will be above the water table in the other cell. STRUCTURES WITH 200 FEET OF DISTURBED AREAS The known, permanent, man-made structures within 200 feet of the proposed mine areas that are not owned by Mr. Hunt are listed below: • Mcglothlin, residence building • Green Valley Turf, residence building • Fleming, James, storage buildings • CDOT, Storage & Garage buildings • Various buildings owned by land owner Mr. David W. Hunt May 13, 2018 Page 3 • Oil & Gas Facilities surrounding the site (Anadarko) • WCR 25.5 & ROW (Weld County Public Works) • Highway 85 (COOT) • Rail Road (Union Pacific) • Suncor Gas Line • Private Irrigation Appurtenances (owned by land owner) • Overhead Power Line (North, South, East & West Boundary, XCEL) • Power Line (Private) • 34-6 Well Head (Kerr-McGee/Anadarko) • 23-6 Well Head (Kerr-McGee/Anadarko) • 33-6A Well Head (Kerr-McGee/Anadarko) • 25-6 Well Head (Kerr-McGee/Anadarko) • 24-6 (DIR) Well Head (Kerr-McGee/Anadarko) • 43-6 (DIR) Well Head (Kerr-McGee/Anadarko) • Telephone, west, south and by Hwy 85 (Century Link) • Telephone/Fiber by Rail Road ROW, east side (Level 3 Communications) STABILITY ANALYSES Recently, Division of Reclamation and Mining Safety (DRMS) staff drafted a policy regarding stability analyses of neighboring structures. The draft summarizes adequate factors of safety (FOS) for non -critical and critical structures. The structures around the DHF mine are, for the most part, considered critical structures. Discussions the author of the memo, Mr. Tim Cazier, indicate the FOS will be adopted by the MLRB. The FOS are for both static and seismic (from an earthquake) stability analyses. For generalized strength assumptions and critical structures, an FOS of 1.5 is considered sufficient for static conditions and an FOS of 1.3 is considered suitable for seismic conditions. The stability of structures within 200 feet of the proposed mining limits was evaluated at four sections under anticipated loading conditions around the perimeter of the site as discussed below. The computer program XSTABL was used for the analysis. The method for selecting the critical failure surface for each analyzed loading condition is the following. The Modified Bishop's Method of Analysis is used to find the critical failure surface by randomly searching with 20 termination points and 20 initiation points (400 failure circles) with 7 foot line segments over a broad range of the slope surface and at the structure in question. This procedure is repeated over different initiation and termination locations until the most critical factor of safety failure surface is identified. The range is narrowed and 20 initiation points and 20 termination points (400 failure circles) with 7 foot line segments for the final run of 400 circles to determine the lowest factor of safety. Therefore, prior to submitting the final stability run, at least 800 failure surfaces were analyzed to determine the lowest factor of safety. Both static stability under anticipated mining conditions and seismic stability under peak ground acceleration loads were performed. Seismic loading was obtained from the U.S.G.S. Unified Hazard Tool. Review of the Hazard Tool indicated a maximum horizontal acceleration of 0.084g with a return period of 2,475 years for the site. The four cross section locations were selected and analyzed as described below. The locations are shown on Figure 1. ► Section 1: This section is on the west side of the main cell and considers a tall highwall at a point where the mine limit is 30 feet from a gas line. This is the most critical section as it marks the point where a tall highwall (deepest bedrock) and closest structure coincide. Everywhere else around the site, the highwall is shorter when structures are within 30 feet of the mine limit. In other areas, structures are greater than 30 feet from the mine limits. ► Section 2: This section is on the east side of the main cell and shows the case where the soils contain some clay and are slightly weaker. In this section, the highwall is approximately 29 feet from the slurry wall and Mr. David W. Hunt May 13, 2018 Page 4 approximately 69 feet from a buried telephone line. A high phreatic groundwater surface was included in the model outside of the slurry wall. This is the section where potentially weak soils are closest to a structure. To be conservative, we modeled overburden in the upper half of the mine slope. ► Section 3: This section is on the west side of the cell and considers the tallest highwall at the mine. In this section the highwall is approximately 95 feet from the slurry wall and the nearest structure is a gas line locate about 17 feet from the slurry wall or approximately 115 feet from the mine limit. ► Section 4: This section is on the northwest side of the main cell and considers an oil field burner structure. The slurry wall is approximately 78 feet from the mine limit and the structure is approximately 115 feet from the mine limit. MATERIAL PROPERTIES The material index and engineering strengths assumed in this slope stability report are discussed below. Overburden The strength properties for the insitu silty to clayey sand overburden were based on field testing data and on our engineering judgment; the following parameters have been used to model the overburden. Dry Unit Weight (pcf) Moist Unit Weight (pcf) Saturated Unit Weight (pcf) Cohesion C' psf Friction Angle 0' ° 103 114 126 50 29 Alluvial Sand and Gravel The sand and gravel is generally a fine to medium -grained sand overlying a fine to coarse grained sand that is typically medium dense and locally gravelly. The alluvial sand and gravel was modeled as follows: Dry Unit Weight (pcf) Moist Unit Weight (pcf) Saturated Unit Weight (pcf) Cohesion C' psf Friction Angle 0'° 119 129 130 0 35 Bedrock Bedrock below the alluvium is claystone, sandstone and interlaminated to interbedded claystone and sandstone bedrock. Sandstone is typically stronger than claystone. Claystone is generally a weak bedrock. To be conservative, we modeled the bedrock as claystone. For the claystone bedrock, two potential strength conditions were considered. These strength conditions are referred to as: 1) peak strength, and 2) residual strength. Peak strength is the maximum shear strength the claystone bedrock exhibits. The shear strength is made up of both cohesion (diagenetic bonding) and internal friction. Under short-term conditions for unsheared claystone, peak strength governs behavior. If a sheared surface or sheared zone is present within claystone as a result of faulting, slippage between beds due to folding, past shrink -swell behavior, stress relief, weathering, or from a landslide, the cohesion along the sheared surface is reduced to zero, and the angle of internal friction is decreased, due to alignment of clay minerals parallel to the shear plane. Under these conditions a claystone exhibits its lowest strength known as residual strength. Residual strength bedrock occurs in discrete zones, parallel with the sheared surface or zone, whereas fully softened strength occurs over a broader area (not used in this modeling). Based on data from other recent projects and engineering judgment, the residual strength claystone was modeled in a two -foot thick layer overlying the peak strength bedrock as follows: Mr. David W. Hunt May 13, 2018 Page 5 Dry Unit Weight (pct) Moist Unit Weight (pcf) Saturated Unit Weight (pcf) Cohesion C' psf Friction Angle 0'° 116 Peak =126 Residual = 110 Peak =135 Residual = 133 Peak =100 Residual = 0 Peak = 25 Residual = 15 Soil-Bentonite Slurry Wall The proposed slurry wall will consist of a mix of the overburden clayey to silty sand, alluvial sand, and imported bentonite. The resulting mix will produce a non -Newtonian fluid with some shear strength characteristics based on a reduced friction angle of the overlying overburden. Based on engineering judgment, we modeled the slurry wall as follows: Dry Unit Weight (pcf) Moist Unit Weight (pcf) Saturated Unit Weight (pcf) Cohesion C' psf Friction Angle 0'° NA 112 115 0 0 STABILITY ANALYSES RESULTS The stability analyses assumed the mining will be per the mine plan. The plan includes dry mining in both cells as the water level in the main cell will be controlled by the slurry wall and mining in the other cell will be above the groundwater table. The perimeter mine slopes of both cells will be no steeper than 3H:1 V. Setbacks listed in Table 1 (below) indicate the setback from the structure to the mining limits. The setback distance can be increased as needed to address other restrictions. The factor of safety shown below is the minimum factor of safety of the three conditions listed above. TABLE 1 - SLOPE STABILITY RESULTS AND SETBACKS Section Location Critical Structure Structure Setback From Mine Limit (ft) Static Factor of Safety at Structure Seismic Factor of Safety at Structure (0.084g hor) DRMS Draft FOS Requirement Static/Quake 1 Main Cell West (most critical section) Gas Line 30 1.95 1.45 1.5/1.3 2 Main Cell East (weaker soil) Phone Line 70 2.27 1.58 1.5/1.3 3 Main Cell West (deepest mining) Gas Line 115 2.63 1.79 1.5/1.3 4 Main Cell Northwest Oil Burner 115 2.76 1.86 1.5/1.3 CONCLUSIONS The mining setback will be 30 -feet from the high wall to the slurry wall or nearest structure. Based on the Factors of Safety listed in the table above, the mine will not be a hazard to neighboring structures provided the structure and slurry wall offsets, as well as the perimeter mine slopes, follow the mine plan. LIMITATIONS Our review is based on regional geologic mapping, present mining plans, and in part borehole data by Civil Resources and Earth Engineering Consultants. Stability analyses were performed using typical strength parameters for the various strata in the critical sections. Should the mining plans change or subsurface conditions vary from those portrayed in this Mr. David W. Hunt May 13, 2018 Page 6 letter, we should be contacted in order to re-evaluate the potential affects on permanent man-made structures. Stability analyses were run at the structure in question and were not run on failure surfaces closer to the highwall. Note also that surcharge loads due to temporary material stockpiles and overburden berms were not considered in the analysis. Please call with any questions or comments. Sincerely, Civil Resources, LLC Gary Linden, P.G. Senior Engineering Geologist Attachments: Figure — Slope Stability Cross Sections Locations Plan (from mining plan) Figure — Slope Stability Cross Sections (from mining plan and XSTABL Output) Boring Locations (from existing conditions) Boring Logs (from slurry wall plans) XSTABL Model Outputs: Sections 1, 2, 3, and 4 J:IHallIrwin-1051DHF-Gravel Mine\DRMS\Exhibits\Stability Analysis\Stability analysis report - huntwater.doc • r Q cr3 1 co O CV CN i 3 LL 0 C O x W CeI O U I— LA CJ) 0) C CD 0 J:1Halllrwin-1051DHF-Grave AFFECTED LANDS: HUNT DAVID W & HUNT KAYLEEN J VARIOUS BUILDINGS. PONDS & ACCESS ROADS TOTAL PERMIT AREA: 139.2 ACRES FLOODPLAIN INFO: FLOODPLAIN INFO SITE IS LOCATED OUTSIDE THE FLOODPLAIN EXISTING VEGETATION: AGRICULTURAL FARM LAND SURVEY INFO: Point Consulting, LLC 8460 W KEN CARYL AVE ! ITTLETON CO 80128 720-258-6836 www.pn1-llc.com APPLICANT: HUNT WATER, LLC 17295 HIGHWAY 85 PLATTE MLLE, CO 80651 NOTE: CIVIL RESOURCES. LLC. IS NOT RESPONSIBLE FOR SAFETY, IN, ON. OR ABOUT THE PROJECT SITE, NOR FOR COMPLIANCE BY THE APPROPRIATE PARTY OF ANY REGULATIONS THERETO THESE MAPS WERE PREPARED BY CIVIL RESOURCES, LLC. IN COOPERATION WITH BESTWAY CONCRETE. BESTWAY WILL KEEP THE DIVISION OF RECLAMATION MINING AND SAFETY INFORMED OF ANY CHANGES TO THE MINING OR RECLAMATION PLANS THROUGH ANNUAL REPORTS AND FILE TECHNICAL REVISIONS AND AMENDMENT APPLICATIONS AS NECESSARY THROUGHOUT THE LIFE OF THE MINE. ANDREW R RODRIGUEZ. P.E. CIVIL RESOURCES, LLC 5/21/18 DATE STRUCTURE INFO: MCGLOTHLIN, RESIDENCE BUILDING GREEN VALLEY TURF, RESIDENCE BUILDING FLEMING, JAMES. STORAGE BUILDINGS CDOT, STORAGE & GARAGE BUILDINGS VARIOUS BUILDINGS OWNED BY LAND OWNER OIL & GAS FACILITIES SURROUNDING THE SITE (ANADARKO) WCR 25.5 & ROW (WELD COUNTY PUBLIC WORKS) HIGHWAY 85 (CDOT) RAIL ROAD (UNION PACIFIC) SUNCOR GAS LINE PRIVATE IRRIGATION APPURTENANCES (OWNED BY LAND OWNER) OVERHEAD POWER LINE (NORTH. SOUTH. EAST & WEST BOUNDARY)(XCEL) POWER LINE (PRIVATE) 34-6 WELL HEAD (KERR-MCGEE/ANADARKO) 23-6 WELL HEAD (KERR-MCGEE/ANADARKO) 33-6A WELL HEAD (KERR-MCGEE/ANADARKO) 25-6 WELL HEAD (KERR-MCGEE/ANADARKO) 24-6 (DIR) WELL HEAD (KERR-MCGEE/ANADARKO) 43-6 (DIR) WELL HEAD (KERR-MCGEE/ANADARKO) TELEPHONE, WEST, SOUTH AND BY HWY 85 (CENTURY LINK) TELEPHONE/FIBER BY RAIL ROAD ROW, EAST SIDE (LEVEL 3 COMMUNICATIONS) MAP LEGEND: DENOTES MEASURED BEARING AND/OR DISTANCE DENOTES RECORD BEARING AND/OR DISTANCE SET 24" g5 REBAR & RED PLASTIC CAP "POINT L538311" SET NAIL & BRASS DISK "L538311" FOUND GOVERNMENT CORNER FOUND CHISELED CROSS / CUT X FOUND NAIL & DISK FOUND IRON PIPE FOUND REBAR BUILDING/STRUCTURE SOIL TYPE - ---- WO- ------ - w—gin -------- - ?,t PERMIT BOUNDARY SECTION LINE RANGE LINE BOUNDARY LINE ADJACENT BOUNDARY EASEMENT LINE FFMA DESIGNATION LINE WATER LINE STORM LINE SANITARY LINE IRRIGATION LINE GAS LINE ELECTRIC LINE (UNDERGROUND) ELECTRIC LINE (OVERHEAD) COMMUNICATION LINE FIBER OPTIC LINE MISCELLANEOUS/UNKNOWN LINE MAJOR CONTOUR MINOR CONTOUR LINE OMNER era OR.YIN FARMS LLC PARCEL / 121 1040041044 AN4L0WK0 *ELL & FLOW L/AC , TLUNO C 1/4 COR SEC 6 2 I/2" ALUMINUM' CAP STAMPED -x175" 1 ID, - - -- ---s.. 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Box 680 FREDERICK, CO 80530 303.833.1416 WWW.CIVILRESOURCES.COM HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE, CO 80651 970 534 0917 CONTACT: DHF HUNT WATER, LLC GRAVEL MINE WELD COUNTY, CO PLATTEVILLE, CO REVISIONS NO DESCRIPTION DATE DRAWN BY: PNT CHECKED BY: ARR DATE: AY 2018 SCALE: AS NOTED AS NOTED 10B NO.: 105.012.01 EXISTING CONDITIONS SHEET: Irwin-1051DHF-Gravel MinelDrawings\SHEETSICOVER_EXSTCOND_DHF.dwg, 5/21/2018 10:15:40 AM AFFECTED LANDS: HUNT DAVID W & HUNT KAYLEEN J: VARIOUS BUILDINGS, PONDS & ACCESS ROADS TOTAL PERMIT AREA: 139.2 ACRES FLOODPLAIN INFO: FLOODPLAIN INFO: SITE IS LOCATED OUTSIDE THE FLOODPLAIN EXISTING VEGETATION: AGRICULTURAL FARM LAND SURVEY INFO: Point Consulting, LLC 8460 W KEN CARYL AVE LITTLETON. CO 80128 720-258-6836 www ont-Ilc.com APPLICANT: HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE, CO 80651 NOTE: save raoLonew+ rwwa LAC ARAM / ,21108000054 Nwaiero Neu t now tsts FOUND Cl/4 CDR. SEC6 2 1/t ALUMNUS I CAP STAMPED -35171 CIVIL RESOURCES. LLC. IS NOT RESPONSIBLE FOR SAFETY. IN. ON, OR ABOUT THE PROJECT SITE. NOR FOR COMPLIANCE BY THE APPROPRIATE PARTY OF ANY REGULATIONS THERETO. THESE MAPS WERE PREPARED BY CIVIL RESOURCES. LLC. IN COOPERATION WITH BESTWAY CONCRETE. BESTWAY WILL KEEP THE DIVISION OF RECLAMATION MINING AND SAFETY INFORMED OF ANY CHANGES TO THE MINING OR RECLAMATION PLANS THROUGH ANNUAL REPORTS AND FILE TECHNICAL REVISIONS AND AMENDMENT APPLICATIONS AS NECESSARY THROUGHOUT THE LIFE OF THE MINE. ANDREW R RODRIGUEZ. P -E. CIVIL RESOURCES, LLC. 5/21/18 DATE MAP LEGEND: (M) (R) 0 ei 0 O • DENOTES MEASURED BEARING AND/OR DISTANCE DENOTES RECORD BEARING AND/OR DISTANCE SET 24" 05 REBAR & RED PLASTIC CAP "POINT L538311" SET NAIL & BRASS DISK "LS38311" FOUND GOVERNMENT CORNER FOUND CHISELED CROSS / CUT X FOUND NAIL & DISK FOUND IRON PIPE FOUND REBAR BUILDING/STRUCTURE SOIL TYPE •M••4=M•MUM. ..S•� • aa h -- ------------- -----r— -- ---- _r-on- nit— gip ----- - r — SS —r —r -r —r— -r— r— r--- ---- - --r—r— r— • - u• — f _ PERMIT BOUNDARY SLURRY WALL MINE HIGHWALL SECTION LINE RANGE LINE BOUNDARY LINE ADJACENT BOUNDARY UNE EASEMENT UNE FEMA DESIGNATION UNE WATER LINE STORM UNE SANITARY UNE IRRIGATION LINE GAS LINE ELECTRIC LINE (UNDERGROUND) ELECTRIC LINE (OVERHEAD) COMMUNICATION LINE FIBER OPTIC LINE MISCELLANEOUS/UNKNOWN LINE J CROSS SECTION CAII OUT VARIES FROM MINE PERMIT/PROPERTY UNE/ROW OR EASEMENT, NO LESS THAN 20' TEMPORARY TOPSnn STOCKPILE GROUNDWATER TABLE --- • y --.4_=r ONWEIt 0107I num ostw moats CO as ---- FOUND %HITE PLASTIC CAP ILLEOBLE FOt1O NO.4REBAR ILLEGIBLE • • • • RECOWL SOILC1T 6E ;ta eurnsC 'I 11 OIf1ER O EDN WILLEY nor co ANGEL 1f211@SOooO#t RE:S/0 MM S1ULCILAY[ FOUND El/4 CDR. 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L/' I I `L • ANAOMKO /re AREA fleet WWI W a AL. • 21 1 I r, I / • 1 L 1 I CUM 1nLOt PLASTIC CAP STAMPED •9644• STUNTED ; I / / / / / I I I I I I / ,,l' 4 / / , r / t,' ION /PO9BLE,SSAG TOOTH OR BOTTOM • • Mira PIT 1050000.17 • ogre* atm IMLAY ROW 1411Ka 1111105000051 amane ace WSW Fur _A soca pry moony OINVIDa• COO( /I S awe 011,109000215111 ,DST , , �-4ALrt✓FKNMit �--- •j nICINC r II ✓ ' r 11 ' r , Ace; ezromic / OMER" &21 RIMS LAC PARCEL /121101000047 STRIPPING AND STOCIOME AREA arcowc sit • • • 20' il••• • • PRIVATE 01 ICH • • • • • • • CAP STOSIWII-LAT40 2016 LS 33125' • • MINIM MLA fate eta*. Cif T PARCEL /1.21105000035 - • • • • • • • • • r II (44 • • CIVIL RES.URCES, LLC 323 5th STREET P.O. Box 680 FREDERICK, CO 80530 303.833.1416 HUNT WATER, LLC 17295 HIGHWAY 85 PtATTEVILLE, CO 80651 970 534 0917 CONTACT: ONE HUNT WATER, LLC GRAVEL MINE WELD COUNTY, CO MINING PLAN REVISIONS NO DESCRIPTION DATE SOILS MAP LEGEND MAP UNIT SYMBOL MAP UNIT NAME ( J..) ALTVAN LOAM, 0 TO 1 PERCENT SLOPES (21) DACONO CLAY LOAM, 0 TO 1 PERCENT SLOPES i'D JULESBURG SANDY LOAM, 0 TO 1 PERCENT SLOPES c.ras JULEsBuRG SANDY LOAM, 1 TO 3 PERCENT SLOPES C.!) LOuP-BOEL LOAMY SANDS, 0 TO 3 PERCENT SLOPES c4...0) OLNEY LOAMY SAND, 1 TO 3 PERCENT SLOPES (::$3 OLNEY FINE SANDY LOAM, 1 TO 3 PERCENT SLOPES tat) VALENT SANDY LOAM, 0 TO 3 PERCENT SLOPES (2) voNA LOAMY SAND, 0 TO 3 PERCENT SLOPES tax) VONA SANDY LOAM, 0 TO 1 PERCENT SLOPES (.2) VONA SANDY LOAM, 1 TO 3 PERCENT SLOPES • • • • • • NORTH 0 100 200 once mica Dame LW ~CIL /121105203023 DESIGNED BY: An_ DRAWN BY: AB& CHECKED BY: ABB_ DATE: MAYS SCALE: AS NOTED AS NOTED JOB NO.: 105.012.01 MINING PLAN SHEET: 3 03 J 11alllrwan-105\DHF-Gravel Mine\Drawings\SHEETS\COVER_EXSTCOND_DHF dwg, 5/21/2018 10 18 04 AM 4800 4790 4780 4770 4760 4750 4740 4730 4720 4810 4800 4790 4780 4770 4760 4750 4740 4800 4790 4780 4770 4760 4750 4740 4730 4720 STA 3+50 00 EL 4784 00 WCR 255 STA 3+92 45 EL 470K11 STA 3+95 0 68 EL 478400 OHS ` HOUSE COSTING GRADE STA 0+00 00 EL 4740 51 ,,,,,,,,,,,,,,,, STA 3+46 48 o 91. 691 \ -- — STA 3+26 3 -17 21--• G4S STA 2+31 62 114S EL 4784 00 STA 5+00 25 �EL 4785 21 lfr ORE STA 0+94 69 SLURRY WALL EL 4738 43 611 BEDROCK STA 3+8919 EL 4734 27 1111f71Y7 IIIIII1r1Y117Illt 17171Yr1Y111117YY1Y 71171YYYYYr7 Y 111111Yrrr1111Y111_7111711 117771777711 STA 3+26 31 4785 00 STA 4+21 41 EL 4783 99 'A _ 0+00 0+50 1+00 1+50 2+00 2+50 STA 2+62 24 EL 4789 89 3+00 STA 2+70 24 EL 4788 71 3+50 4820 4810 4800 4790' 4780 4770 4760 4750 Er/STING GRACIE JH IV RECLA/M/A//NE StuPE EL 4793W STA 1+70 38 STA 2+0182 STA 2+3016 EL 4795 00 EL 4797 00 STri+12 28 EL 4797 00 _STA 1+ 84 EL 4794 92 00 STA, 2, 75 231 EL 4788 00 STA 2+90 36 EL 4787 00 \_STA 3+00 38 EL 4786 99 SLURRY WALL STA 0+00 00 STA 0+28 32 BEDROCK STA 3+00 38 EL 475649 EL 475 EL 4757 91 1,,,/lI/,/ 1111111Y11111711Y111Y1111Y17111 1111r111Y1111t1111111rr111Y111111Y111Yr1Y1111111111111111 STA 1+70,38 EL 475 ry t 12 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4810 4800 4790 4780 4770 4760 4750 4740 4+00 4+50 CROSS SECTION EXISTING GRACE JH IV RECLA/M/M/NE SLOPE STA 1+57 83 EL 4785 40 STA 2+35 66 STA 2+65 76 EL 4785 81, EL 4786 00 SLURRY WALL STA 0+0000 STA 0+3808 EL 4796 32 EL 474 BEDROCK STA 2+35 66 /111.,1,,. , 11t1177171711117117r7117111111171111Y� 11111771117711771171,93 7,, 3197 STA 2+72 63 EL 4786 00 G4S WELL STA 3+0010 EL 4739 20 1717711111711Yll rtt PL STA 97 J STA 3+68 56 A 1740 nn Cl 4785 31 STA 4+4744 EL 4784 40 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 EX/SANG GRADE STA 0+00 00 - EL 4763 88 Y. //, If /„'1• STA 2..6647_ STA 1199 48 STA 2+28 8] EL 4801 00 EL 9795 88 EL 4796 03 1I1 - STA 3+00 41 510 3+23 04 EL 480102 EL 480100 STA 1+65 49 P' _ EL 4796 00 STA 2+43 73 JN IV I_1e �, I lr_� `\ EL 4796 00 US HWY BS REZ'CA/M/M/NE -%r_p, I SOUTHBOUND SLOPE nL STA 2+34 56 STA 1+945fi _11 L 479600 - BEDROCK EL 4763 34STA 2+88 13 STA 0+74 02 TELEPHONE ONES �EL 4770 02 EL 476 1111777117117717111111YYY YYYYYYYYYYYYI Y YfYYYYYYYYYYIYYYYYYYYYYYYYI SLURRY WALL 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4820 4810 4800 4790 4780 4770 4760 4750 4+00 4+50 CROSS SECTION 4800 4790 4780 4770 4760 4750 4740 4730 4720 5+00 5+50 CROSS SECTION (Etna* 6+00 4800 4790 4780 4770 4760 4750 4740 4730 4720 CROSS SECTION P w (XI WI) CIVIL RES'DURCES, LLC 323 5th STREET P O Box 680 FREDERICK, CO 80530 303 833 1416 WWW W CIVILRESOURCES COM HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE CO 80651 970 534 0917 CONTACT DHF Lu z J Ui ce U J J LLI f — Q r z 2 WELD COUNTY, CO PLATTEVILLE, CO REVISIONS NO DESCRIPTION DATE DESIGNED BY AR$ DRAWN BY ARR. CHECKED BY ARR (06 NO 105 012 01 DWG NAME,COVER EXSTCOND DHF DWG DATE 8+87808 SCAT F AS NOTED AS NOTED SECTIONS -1 SHEET 5 CIVIL RES`DURCES, LLC 323 5th STREET P O Box 680 FREDERICK CO 80530 303 833 1416 WWW W CIVILRESOURCES COM HUNT WATER, LLC 17295 HIGHWAY 85 PLATTEVILLE CO 80651 970 534 0917 CONTACT DHF J \Halllrwin-1051DHF-Gravel Mine\Drawings\SHEETS\COVER_EXSTCOND_DHF dwg, 5/21/2018 10 18 49 AM 4820 4810 4800 4790 4780 4770 4760 4750 4800 4790' '4780 4770 4760 4750 4740 4730 4720 STA 0+50 45 PROPOSED BERM JH IV MINE k RECLAMATION SLOPE EL 4802 S8 \ + EX/STING GRADE STA 2+89 01 � STA 3+99 98 E PERM/T BOUNDARY/PC 1 TELETHONE �L 4800 00 —1 mm(— EL 4795 14 TELEPHONE En.. —, -Hwy S _II LIAR:. ^ 1 ,O,Mar o 6415. J _E4 aBo49Q_ 7ELEPHONE STA 2+6868 tSTA 3+3929 EL 4794 90 EL 9784 95 1111111111111111111111771111111111111f1r111111111111111111111111111X(YfYrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr r Alf r 1111r7rrrrrrrrrrr77r BEDROCK tSTA 2+94 03 10 05 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4820 4810 4800 4790 4780 4770 4760 4750 CROSS SECTION 2 I (AIQI) STA 0+0000 El. 4742 89 EX/SOING GRADE STA 2+81 60 [G4S EL 4787 68 STA 4+80 30 EL 4787 47 JH IV M/NE d' RECLAMA77ON SLOPE STA 1+43 53 BEDROCK STA 4+80 38 EL 474 EL 4734 62 1111711 /-SLURRY WALL [SLURRY STA 5+4012 EL 4787 58 STA 5+4012 EL 4737 98 7rrr777/71r17117717- r. 0+00 0+50 1+00 1+50 2+00 2+50 3+00 3+50 4+00 4+50 5+00 5+50 4800 4790 4780 4770 4760' 4750 4740 4730 4720 CROSS SECTION P ?o (m IKET1 HUNT WATER, LLC GRAVEL MINE WELD COUNTY, CO PLATTEVILLE, CO REVISIONS NO DESCRIPTION DATE DESIGNED BY xxx DRAWN BY ILL CHECKED BY 111 JOB NO 105 012 01 DWG NAME.COVER EXSTCOND DHF DWG DATE Ku xx, 2014 SCALE, AS NOTED AS NOTED SECTION -2 SHEET 6 5-10-18 12:16 DHF Mine Section I1 I 4900 4800 t 4700 a) x Q 4600 I 10 most critical surfaces, MINIMUM BISHOP FOS = 1 .952 4500 _ 4400 e _w 1 T T < F 0 100 200 300 400 500 600 700 800 X—AXIS (feet) QUAKE 5-10-18 13:03 4900 4800 n 15 4700 cn < 4600 _ I 4500 DHF Mine Section ri Quake 10 most critical surfaces, MINIMUM BISHOP FOS = 1.452 4400 , 1 T r 0 100 200 300 400 500 600 700 800 X-AXIS (feet) SECTION2 5-10-18 17:11 4850 4800 t 4750 v 4- X C 4700 I >- 4650 4600 300 350 0 DHF Section 2 10 most critical surfaces, MINIMUM BISHOP FOS = 2.267 50 100 150 200 250 X-AXIS (feet) SEC2Q 5-11-18 8:18 4350 _ 4300 114750 < 4700 _ I >- 4650 _ 4300 DHF Section 2 Quake 10 most critical surfaces, MINIMUM BISHOP FOS = 1.576 400 1 I 1 I 1 0 50 100 150 200 250 300 350 400 X-AXIS (feet) SECTIONS 5-11-18 11:50 4900 4800 t 4700 (n X < 4600 I >- 4500 4400 DHF Section West Sec Deepest BR 10 most critical surfaces, MINIMUM BISHOP FOS = 2.632 600 700 0 100 200 300 400 500 X-AXIS (feet) SEC3Q 5-11-18 12:06 4900 4800 a 47OO a) 4-- (f) X < 4600 I >- 4500 4400 DHF Section West Deepest BR Quake 10 most critical surfaces, MINIMUM BISHOP FOS = 1.793 800 3 1 0 100 200 300 400 500 600 700 800 X-AXIS (feet) SEC4 5-11-18 13:29 4850 4800 4> 4750 a) t.. — v) x Q 4700 I >- 4650 4600 DHF Section 4 Northwest 10 most critical surfaces, MINIMUM BISHOP FOS = 2.758 w1 I 1 I 1 0 50 100 150 200 250 300 350 400 X-AXIS (feet) SEC4Q 5-11-18 13:35 4850 _ DHF Section 4 Northwest Quake 10 most critical surfaces, MINIMUM BISHOP FOS = 1.855 0 50 100 150 200 250 300 350 400 X-AXIS (feet) , J:11alllrwin-1051DHF-Gravel Mine\Drawing \SHEETS\all DI -IF borelog.dwg, 5/21/201810:32:42 AM 10 20 30 40 50 60 TH-1 f:.._/; / DD=117.5 7 MC=10.0 -200=37.0 LL=29 PI=9 -8 MC=2.3 -200=1.3 -24 MC=2.8 -200=1.5 4-3-18 21 24 20 54 50/4" DD=112.5 MC=16.0 -200=84.5 50/3" LL=35 PI=11 K = NO TAKE 50/4" TH-2 DD=101.7 \.: 6 MC=8.6 .. -'.*.' -200=15.6 / / / / / / / / 6 MC=3.0 -200=5.0 8 TH-3 MW -2 V 4-3-18 20 39 61 50/4" 50/4" DD=113.4 MC=17.2 -200=94.8 50/4" BORE LOG LEGEND: / / / / / / / / /:/ / / /✓ 5 MC=8.2 -200=19.8 22 V 4-2-18 35 20 TH-4 TH-5 TH-6 M W-3 V 3-20-18 V 4-23-18 6 DD=92.0 MC=4.6 -200=11.3 13 V 4-2-18 28 50/4" 50/6" K=1.4x105 DD=92.1 MC=27.2 -200=85.8 / 5 6 DD=107.4 MC=7.7 -200=30.5 11 4-2-18 18 50/4" 7 50/6" 50/4" 50/5' k� TOPSOIL, SAND, MEDIUM BROWN WITH ORGANICS, (OL-OH) SAND: LOOSE TO MEDIUM DENSE, LOCALLY DENSE; SILTY LOCALLY CLAYEY; VERY FINE TO FINE GRAINED, LOCALLY MEDIUM GRAINED; SLIGHTLY MOIST BECOMING WET BELOW THE WATER TABLE; BROWN, TAN, BUFF (SM, SM-SC, SM-SP, SC). SAND: LOOSE TO DENSE; LOCALLY GRAVELLY; MEDIUM TO COARSE GRAINED; SLIGHTLY MOIST BECOMING WET BELOW THE WATER TABLE; BROWN, GREY, PINK (SW, SP -SW). SAND: LOOSE TO MEDIUM DENSE; CLAYEY, FINE TO MEDIUM GRAINED; SLIGHTLY MOIST BECOMING WET BELOW THE WATER TABLE; BROWN (SC,SC-SM). / / / / /-/ CLAYSTONE: HARD; SLIGHTLY SANDY TO SANDY; SLIGHTLY MOIST TO MOIST; WEATHERED JUST BELOW OVERLYING SOILS; SLIGHTLY TO MODERATELY PLASTIC, LOCALLY HIGHLY PLASTIC, LOCAL LIGNITE; GRADES TO SILTSTONE; GREY. INTERLAMINATED CLAYSTONE AND SANDSTONE: -HARD; SAND-CGNSTI-TUENT-IS-FINESD-MEDIUILGRAINED- SLIGHTLY MOIST; WEATHERED JUST BELOW OVERLYING SOIL; GREY TO LIGHT GREY. SANDSTONE: HARD; LOCALLY SILTY AND/OR CLAYEY; SLIGHTLY MOIST; WEATHERED JUST BELOW OVERLYING SOILS; GREY TO LIGHT GREY. LABORATORY TESTING: DD - DRY DENSITY, pcf MC = MOISTURE CONTENT, % -200 = % PASSING THE #200 SIEVE LL = LIQUID LIMIT, % PI = PLASTICITY INDEX, % GNP = GRANULAR NON -PLASTIC OMC = OPTIMUM MOISTURE CONTENT, % MDD = MAXIMUM STANDARD PROCTOR DRY DENSITY. NOTES: 50/6" DD=106.9 7 MC=5.7 -200=18.1 1- /. rr 4-2-18 2 64 50/4" 12 TH-7 V 3-20-18 4--23-18 9 1. EXPLORATORY BORINGS AND MONITORING WELLS WERE DRILLED AT THE APPROXIMATE LOCATION SHOWN ON THE SITE PLAN. 2. MONITORING WELLS WERE DRILLED MARCH 20 AND 21, 2018. 3. EXPLORATORY BORINGS WERE DRILLED APRIL 2 THROUGH 5, 2018. 4. LINES BETWEEN MATERIALS ARE APPROXIMATE AND TRANSITIONS MAY BE GRADUAL. 5. GROUNDWATER LEVELS WERE MEASURED AT THE TIME OF DRILLING AND WILL FLUCTUATE SEASONALLY AND WITH PRECIPITATION AND LOCAL IRRIGATION. 0 5 10 6. BORINGS AND MONITORING WELLS WERE DRILLED WITH A TRUCK -MOUNTED CME-55 DRILL RIG POWERING 8 -INCH O.D. DIAMETER HOLLOW STEM AUGER. PACKER TEST INTERVALS WERE CORED USING AN HQ3 CORE BARREL. VERTICAL SCALE TN FEET 12-13-17 WATER LEVEL AND DATE MEASURED )INTERVAL OF BULK DISTURBED SAMPLE 5 CALIFORNIA OR STANDARD SPLIT SPOON SAMPLE, NUMBER INDICATES THE BLOW COUNTS OF A 140 -LB HAMMER FREEFALLING 30 -INCHES REQUIRED TO DRIVE THE SAMPLER 1 -FT. WELL SCREEN INTERVAL K=1x10 5 PACKER TEST INTERVAL AND RESULTS OR "NO TAKE" IF INDICATED. TH-12 21 5 DD=105.5 MC=7.5 -200=26.8 8 65 4-2-18 62 0 20 30 40 50/3" DD=103.4 MC=21.1.1 -200=37.7 — 50/3" m ■ TH-13 TH-1 a TH-2 TH-3 TH-10 50 60 65 ■ TH-9 MW 4 TH-11 EEC -81 EEC -82 • EEC -83 TH-5 K TH-8 TH-7 NORTH VICINITY MAP (NOT TO SCALE) CIVIL RES°VURCES, LLC 323 5th STREET P.O. Box 680 FREDERICK, CO 80530 303.833.1416 WWW.CIVILRESOURCES.COM HALL-IRWIN CONSTRUCTION 301 CENTENNIAL DRIVE MILLIKEN, CO 80543 CONTACT: 970-587-7200 HUNT WATER, LLC - GRAVEL MINE WELD COUNTY COLORADO REVISIONS NO DESCRIPTION DATE DESIGNED BY: 2I�R DRAWN BY: B8_ CHECKED BY: GL_ JOB NO.: 105.012.02 DWG NAME:aII DEW boreloo.Gwo DATE: Apr to, Kole SCALE: AS NOTED AS NOTED EXPLORATORY BORE LOGS SHEET: 3 J:\Hallfrwin-1051DHF-Gravel Mine\Drawings\SHEETS1all DHF borelog.dwg, 5/21/201810:33:19 AM TH-8 7 5 -16 DD=108.2 MC=8.7 -200=31.3 LL=23 P1=5 DD=104.1 MC=3.8 -200=6.7 •_L 4-4-18 / / - 2 - 13 50/5" 87 50/6" MW -4 DD=112.5 MC=16.0 -200=84.5 LL=35 PI=11 TH-9 00=108.0 8 MC=8.7 -200=38.9 g DD=106.6 MC=2.9 -200=15.7 GNP 2 50/4" 50/5" 50/5" TH-10 6 DD=102.0 MC=10.7 -200=28.2 LL=23 PI=6 5 DD=101.3 MC=3.6 -200=7.7 - 25 4-4-18 9 -20 50/5" 86 K = 2.2810-6 50/6" TH-11 DD=106.8 MC=7.6 -200=21.6 LL=20 PI=4 _ 5 DD=107.4 MC=3.8 -200=8.5 -19 A -95/10 - ,6k 50/4" DD=111.0 MC=15.7 -200=88.9 / • / 50/3" LL=34 j PI=9 50/3" TH-12 DD=117.0 MC=14.8 50/6" -200=85.9 LL=34 50/5" PI=9 -50/3" 0 5 10 VERTICAL SCALE IN FEET MW -1 V 4-23-18 _M3-20-18 23 TH-12 FOR LEGEND AND NOTES SEE SHEET 3 TH-13 - 30 -36 -22 - 50/4" 50/6" DD=112.1 MC=16.6 -50/3" M W-5 3 _M_3-21-18 38 20 10 30 1- - 40 200=40.8 MW1 s ■ TH-13 TH-3 MW 2 TH-10 A TH-11 EEC -82 EEC -B4 TH-4 EEC -B1 EEC -B3 TH-5 MCr- TH-9 MW 4 MW 3 TH-6 a TH-8 TH-7 / / MW5 O 50 60 70 uolllll15,, VICINITY MAP (NOT TO SCALE) CIVIL RES"SURCES, LLC 323 5th STREET P.O. Box 680 FREDERICK, CO 80530 303.833.1416 WWW.CIVILRESOURCES.COM W.CIVILRESOURCES.COM HALL IRWIN CONSTRUCTION 301 CENTENNIAL DRIVE MILLIKEN, CO 80543 CONTACT: 970-587-7200 HUNT WATER, LLC - GRAVEL MINE WELD COUNTY COLORADO REVISIONS NO DESCRIPTION DATE DESIGNED BY: _art. DRAWN BY: 8P CHECKED BY: JOB NO.: 105-012.02 DWG NAMEDII DHF borelog.dwg DATE: aa., 23, 20ra SCALE: AS NOTED AS NOTED EXPLORATORY BORE LOGS SHEET: 4 J:1Halllrwin-1051DHF-Gravel Mine\DrawingSISHEETS1all DHF borelog.dwg, 5/21/2018 10:33:47 AM r O 2 3 4 5 6 7 0 2 3 F a 4 TEST PIT 1 TEST PIT 2 TEST PIT 3 TEST PIT 4 TEST PIT 5 TEST PIT 6 TEST PIT 7 TEST PIT 8 TEST PIT 9 TEST PIT 9A TEST PIT 98 TEST PIT 10 TEST PIT 12 MC = 5.9 -200 = 15.0 GNP N MC = 3.8 -200 = 9.3 GNP MDD = 122.4 OMC = 11.0 MC = 7.4 -200 = 38.6 LL = 23 PI = 7 MC = 3.2 -200 = 12.8 MC= 7.5 -200 = 15.5 GNP MC = 6.4 -200 = 23.8 GNP MC = 8.2 MC= 4.7 -200 = 16.2 :Z 'r • -200 = 31.5 MC = 4.3 -200 = 9.2 GNP MC = 7.9 -200 = 15.0 MC = 3.0 -200 = 33.8 MC = 3.6 -200 = 26.6 7 MC = 1.7 -200=3.7 MC = 7.1 -200 = 35.4 MC= 3.1 -200 = 13.5 MC = 2.8 -200 = 6.8 TEST PIT 13 TEST PIT 14 TEST PIT 15 TEST PIT 16 TEST PIT 17 TEST PIT 18 TEST PIT 19 TEST PIT 20 TEST PIT 21 TEST PIT 21A MC = 5.8 -200 = 22.1 MC = 3.8 MC - 5.3 -200 35.3 N; MC = 7.7 -200 = 17.5 -200 = 24.1 MC = 6.6 -200 = 23.8 PI = 4 LL=19 MC = 5.3 -200 = 18.6 / GNP MC = 4.8 -200 = 24.5 GNP MC = 1.5 -200 = 6.5 lS MC= 8.0 -200 = 37.8 GNP PI=9 LL = 23 MDD = 118.9 OMC = 10.2 A S - - MC= 7.2 -200 = 30.3 PI = 6 LL = 23 6 ....''') MC = 2.0 _-200_=_9.8 _- MC = 1.5 -200 = 6.5 FOR LEGEND AND NOTES SEE SHEET 3 3 4 0 8 16 VERTICAL SCALE IN FEET a NOTES: F 3 F- a 4 5 7 1. TEST PITS WERE EXCAVATED MARCH 14, 2018 WITH A JOHN DEERE, RUBBER WHEELED BACKHOE. LINES BETWEEN MATERIALS REPRESENT APPROXIMATE BOUNDARIES BETWEEN TYPES. TRANSITIONS MAY BE GRADUAL. 2. TOPSOIL VARIES BETWEEN 6 -INCHES TO 1.5 -FEET THICK. 3. ELEVATIONS ARE ESTIMATED FROM TOPOGRAPHICAL MAPPING AND SHALL BE CONSIDERED APPROXIMATE. NORTH VICINITY MAP (NOT TO SCALE) TP-19 ° TP-18 TP-13 ° TP-14 o TP-15 ° TP-95 TP-10 ▪ TP-9A TP 7 TP-8 TP-4 TP-5 TP-6 TP-1 TP-2 TP-20 TP-21A TP-17 °TP-16 • TP-12 TP-11 ° o TP-3 TP-21 CIVIL RES'DURCES, LLC 323 5th STREET P.O. Box 680 FREDERICK, CO 80530 303.833.1416 WWW.CIVILRESOURCES.COM W.CIVILRESOURCES.COM HALL-IRWIN CONSTRUCTION 301 CENTENNIAL DRIVE MILLIKEN, CO 80543 CONTACT: 970-587-7200 Lu 0 Hti LL 2 HUNT WATER, LLC - GRAVEL MINE COLORADO REVISIONS NO. DESCRIPTION DATE DESIGNED 8Y: ARR DRAWN BY: Jr_ CHECKED BY: .DL_ JOB NO.: 105.012.02 DWG NAME;all DHF bareloa.dwq DATE: 0w. 10. 1010 SCALE: AS NOTED AS NOTED EXPLORATORY ---- TEST PIT LOGS SHEET: 5 GROUNDWATER MEMO Hunt Water, LLC — Gravel Mine — MLRB 112 Permit Application May 10, 2018 Mr. David W. Hunt 14460 County Road 40 Platteville CO 80651 RE: Hunt Water, LLC Gravel Mine - Mitigation Plan for Potential Groundwater Impacts Dear Mr. Hunt: The purpose of this memo is to describe the existing groundwater regime in the vicinity of the proposed DHF Gravel Mine (Site) and the groundwater impacts that could result from soil-bentonite slurry wall (slurry wall) lining and mining at the proposed DHF Gravel Mine. The site is located at 17295 Highway 85 in Weld County, Colorado between the towns of Platteville (to the south) and Gilcrest (to the northeast). More specifically, the site is within part of Section 6, Township 3 North, Range 66 West of the 6th Principal Meridian. Existing Groundwater Conditions The near surface groundwater is part of an alluvial aquifer in which permeable sand and gravel alluvium overlies relatively impermeable bedrock of the Laramie Formation. Groundwater measured in site monitoring wells occurs at depths ranging from approximately 12 to 17 feet blow existing ground. The prevailing groundwater flow direction at the DHF Gravel Mine area is north -northwesterly roughly reflecting the site topography with some influence from the bedrock topography. Groundwater in the area is tributary to the South Platte River located north and northwest of the site. Locally the groundwater levels and flow directions are likely influenced by: > Groundwater Recharge Basins: A groundwater recharge basin is present on the southwest corner of the site. This basin appears to be excavated to a sufficient depth that allows relatively quick recharge of the alluvial aquifer. Ditch water is commonly directed into this basin. In addition, a future recharge basin is planned for the northwest corner of the site. When active, groundwater will tend to flow away from the basins and maintain historic groundwater elevations. ➢ Surface Water: The Site is in an area of irrigated farm land. Irrigation water which is not lost to evaporation and evapotranspiration likely recharges the alluvial aquifer. ➢ Alluvial Wells: Local alluvial wells are present in the area. When pumping, groundwater will be drawn to the well. Monthly groundwater level monitoring has been performed since March, 2018 at five monitoring wells drilled at the site. Average groundwater elevations are presented in the following table: Page 2 Mr. David W. Hunt May 10, 2018 Average Level Well (Since March, 2018) MW -1 4779.53 MW -2 4774.64 MW -3 4768.82 MW -4 4778.2 MW -5 4778.2 The monitoring wells were installed prior to the irrigation season and prior to the use of the groundwater recharge pond on the southwest corner of the site. Subsequent measurements were made after the start of the irrigation season and the use of the recharge basin. Mining Plan Two cells will be mined at the site. The main mine cell is on the west side of Highways 85 and 60. This cell will eventually be mined to bedrock and will be lined with a slurry wall. Depths to bedrock in this cell range from approximately 28 to 57 feet below existing grade. The shallowest bedrock depths are on the southeast part of the cell. The deepest bedrock depths are on the northwest part of the cell. The second cell is on the east side of Highway 85 on the southeast corner of the site. Mining in this second cell will remain above the groundwater table. Potential Slurry Wall & Mining Impacts to Local Groundwater Levels At the main cell, a properly constructed slurry wall will tend to isolate the mine from the surrounding alluvial groundwater table. The slurry wall around the Site could cause "mounding" of groundwater (increase in groundwater elevation) on the upgradient side (south and southeast) of the proposed slurry wall and a potential "shadow effect" (reduction in groundwater level) on the downgradient side (north and northwest) of the Site. As mentioned above, groundwater levels are approximately 12 to 17 feet below the ground surface. Any mounding effect on the upgradient side is anticipated to be relatively minor (on the order of a few feet or less) and will dissipate with distance from the mine. The shadowing affect will be minimized by the presence of the groundwater recharge pond on the southwest and the future groundwater recharge pond planned on the northwest side of the mine. Due to the presence of the slurry wall, limited to no affects are anticipated outside of the slurry wall due to dewatering during mining. The southeast cell will be mined above the water table and will not adversely affect groundwater levels. Area Wells A review of permitted wells on file at the State engineer's Office (SEO), Division of Water Resources (DWR) indicates there are 13 permitted wells within 600 feet of the permit boundary. All of these wells are screened in the alluvium. Five (5) of these wells, two (2) on the east (upgradient) and three (3) on the west downgradient are on -site owned by Mr. Hunt and are within the permit boundary. A discussion of the wells not owned by Mr. Hunt and located within 600 feet of the permit boundary are discussed below: Page 3 Mr. David W. Hunt May 10, 2018 ➢ Green Valley Turf Farm: The Green Valley Turf Farm (Green Valley) owns property to the north, northeast, and east of the site. Green Valley owns five wells within 600 feet on the permit boundary. Four of these wells are to the east and northeast (upgradient to cross gradient from the mine. The fifth well is north of the northwest boundary of the mine (downgradient). The upradient and crossgradient wells are approximately 1,100 feet from the slurry wall and the mine limit. This distance is great enough that no significant changes in the pumping level and capacities of these wells are not anticipated. The downgradient well is approximately 150 feet from the northwest corner of the permit boundary and is also approximately 150 feet from the planned recharge pond planned on the northwest corner of the site. This well is approximately 600 feet from the slurry wall and the mine limit. Given the distance of this well from the slurry wall and the future presence of the recharge pond, this well should not be adversely impacted. ➢ Fleming Property: The Fleming property is located east of State Highway 60. One well is present on this site. This well is approximately 1,100 feet upgradient from the slurry wall and the mine limit. Due to the distance, this well should not be adversely impacted. ➢ McGlothlin Farms LLC Property: The McGlothlin property is located west of the site (west of County Road 25.5). Two (3) wells are located on the McGlothlin Property within 600 feet of the permit boundary. These wells are downgradient from the mine. One of these wells is approximately 135 feet from the permit boundary and approximately 200 feet from the slurry wall. The other well is approximately 500 feet from the permit boundary and approximately 1,100 feet from the slurry wall. The well located 200 feet from the slurry wall will be mitigated by the southwest and northwest recharge ponds. The well located 1,100 feet from the slurry wall is significantly far enough away to not suffer adverse impacts from mining. Mitigation Plan The site mining and reclamation activities are unlikely to adversely affect area wells as upgradient wells are far from the mine and downgradient wells are downgradient from recharge ponds operated by the miner. However, if the miner receives a complaint, the following mitigation plan will be implemented. The site monitor wells will be measured monthly to identify potential changes in alluvial groundwater flow or elevation associated with mining and reclamation activities. Baseline data collected from the monitoring program will provide a range of relative water levels associated with premining groundwater conditions. Experience at other mines in similar geologic settings has found that groundwater levels tend to fluctuate being highest in the summer irrigation season and lowest in the winter and early spring. If, during mining or reclamation, the relative seasonal groundwater elevation at any monitoring wells differs from baseline conditions by more than 2 feet, and the condition was not observed during baseline monitoring, or if the miner receives a complaint from any well owner within 600 feet of the site boundary, then the miner will evaluate the cause and take action within 30 days and notify the DRMS. After the DRMS has been notified, the miner will review the data and available information and submit a report to the DRMS within 30 days. The evaluation will include discussions with the well owner who has contacted the miner regarding a concern and review of baseline data from the well and vicinity to evaluate whether changes may be due to seasonal variations, climate, mining, slurry wall lining or other factors. The report will identify the extent of potential or actual impacts associated with the changes. If the extent of groundwater changes due to mining or reclamation activities is determined to be a significant contributing Page 4 Mr. David W. Hunt May 10, 2018 factor that has or may create adverse impacts, the mining associated impacts will be addressed to the satisfaction of the DRMS. Miner will begin implementing one or more mitigation measures if mining and reclamation activity is determined to be a significant factor to groundwater changes requiring mitigation. Mitigation measures may include, but are not limited to: Placing water in a recharge pond to raise groundwater levels around the well. Cleaning the well to improve efficiency. Providing an alternative source of water or purchasing additional water to support historic well use in terms of water quantity and quality. If needed, water quality parameters will be checked in affected wells to ensure alternative sources support historic use. Modifying a well to operate under lower groundwater conditions. This could include deepening the well or lowering pumps. All work would be done at the miner's expense with the exception of replacing equipment that was non-functional prior to mining. It existing wells cannot be retrofitted or repaired, replacing the impacted well. Please call if you have any questions. Sincerely, CIVIL RESOURCES, LLC Gary Linden, P.G. J:1Halllrwin-1051DHF-Gravel Minelgroundwaterlgroundwater-memo DHF.doc HUNT WATER, LLC - GRAVEL MINE: GROUNDWATER MONITORING PROGRAM Piezometer Information and Water Levels ID Date Drilled Total Depth Coordinates Screened Interval Northing Easting A Ground El, ft Top PVC El, ft Property MW -1 3/20/2018 59 39-59 13354340 3189992.0 4783 72 4786.70 DHF MW -2 3/20/2018 37 17-37 1333652.0 3190199 0 4794.76 4797.80 DHF MW -3 3/20/2018 41 21-41 1334687 0 3191381.0 4792 13 4795.10 DHF MW -4 3/20/2018 39.5 19.5-39.5 1335979.0 3191742.0 4786 20 DHF MW -5 3/20/2018 24 9-24 1333916.0 3191650.0 4795.25 4798.20 DHF Depth frorn Top of PVC, feet Date Measured I MW -1 MW -2 MW -3 MW -4 MW -5 3/20/2018 20 17 18 18 20 4/23/2018 17.39 19 55 22.93 16.76 not measured Groundwater Level MW -1 MW -2 MW -3 MW -4 MW -5 3/20/2018 4766 70 4780.80 4777 10 4768.20 4778 20 4/23/2018 4769 31 4778 25 4772.17 4769.44 Hello