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Engineering Analytics,inc. <br /> 1606 Specht Pant Road t &Ae M Fort Copins C0 80525 970 488 3111 www enganalytics.cern 2008 2023 <br /> Technical Memorandum <br /> To: Craig Sparrow From: Jason Andrews, P.E. <br /> Eric Roads, E.I.T. <br /> Company: Western Equipment and Truck, Inc. Date: November 16, 2023 <br /> EA No.: 111390 Q,ND0 <br /> Re: Exhibit D—Mining Plan �0 ..,•'i <br /> Applicant: Western Equipment and Truck, Inc. <br /> �'• ��° �•;� <br /> Address: 23988 U.S. 34, Kersey, CO +� <br /> 41628 <br /> The parcel to be mined is approximately 74 acres. The total minable area is approximately 64 <br /> acres. The primary commodity to be mined is topsoil for use as revegetation by the oil and gas <br /> industries. The operator plans no production or sale of secondary or incidental products. The <br /> material will be excavated using a Volvo 350 loader, Volvo 260 loader,CAT14G grader, D7CAT <br /> bulldozer,and a 2010 international water truck 4900 series with a 2000 gal water tank. No blasting <br /> of the material will be required to excavate the resource. The excavated material will be loaded <br /> into highway trucks. No onsite processing of soils will be completed. Client owns and operates a <br /> used truck sale lot. Trucks and equipment that can be transported back to his equipment yard will <br /> be stored there overnight. <br /> The proposed mining is to strip the top 10-12 inches of topsoil from the site to be sold for <br /> revegetation of oil and gas roads and pads. A minimum, 2 inches of topsoil will be left in the <br /> mining area to allow for reclamation of the mining area. Based on USDA site mapping it is <br /> anticipated there is about 24 to 26 inches of topsoil underlain by gravely sand. <br /> The desire is to maintain "live" topsoil onsite. Thus, topsoil will be mined as needed and will not <br /> be stockpiled on site for longer than 1 week. In reality, topsoil will be harvested and transported <br /> as soon as possible, Iikely next day, to maintain the integrity of the topsoil. It is anticipated that <br /> no more than 5 acres will be activity mined at one time. It is expected that the overall excavation <br /> will take a year. Water for dust control will be applied with a water truck. Water will be purchased <br /> from local sources. The water rights for site have been sold,however the applicant has maintained <br /> a strong relationship with buyers and has a reliable supply as needed. <br /> The primary access for the removal of topsoil is along Weld County Road 49 along the east side <br /> of the property. No onsite processing will occur, thus no permanent haul roads or onsite facilities <br /> will be established. During extraction of the topsoil silt control fence and other best management <br /> practices for the control of surface water will be used. The site will remain level during excavation <br /> and will be depressed from the current ground surface. Thus, no off site storm water flows or <br /> concentrated flows are expected and to occur no storm water ponds are needed. <br /> November 16, 2023 1 Engineering Anaty7ics, lyre. <br />