Laserfiche WebLink
Affected Acreage Mining Plan <br /> Area acres <br /> Mined Area 187.66 <br /> Access Roads 10.03 <br /> Disturbed Land 29.83 <br /> TOTAL 227.52 <br /> Various setbacks from adjacent roads, adjacent structures, and oil and gas infrastructure will be <br /> maintained as mining occurs. All setbacks specified in the surface use agreements with the <br /> oil/gas companies will be followed. The final executed agreements are expected to be obtained <br /> in the near future and will be forwarded to the Division when they are available. A minimum 200 <br /> foot setback from any existing oil/gas facility will be maintained until that time. See Exhibit C, <br /> Mining Plan Map, and the Slope Stability Report for the mining limit configuration and <br /> information on setbacks and their locations. <br /> Products <br /> Sand and gravel will be the primary product produced from the DPG Mining site. The principal <br /> intended use for the sand and gravel is for road base and construction aggregates. <br /> Subsurface drilling and testing have verified that the DPG Mining site property contains a <br /> significant commercial deposit of sand and gravel. The depth of interbedded sandy clays and <br /> clayey to silty sands at the surface range from 3 to 12 feet. The thickness of the aggregate <br /> material ranges from 67 to 102 feet where bedrock contact occurs. <br /> Mining Methods <br /> The deposit will be dry mined and slurry walls will be constructed around the perimeter of the <br /> mining area for Phases 2, 4, and 5. Phases 2, 4, and 5 will not be opened until the slurry wall is <br /> constructed around each phase prior to mining each phase. Design specifications for the slurry <br /> wall and quality control procedures used during construction will ensure that the reclaimed <br /> reservoir meets State Engineer's Office (SEO) performance standards. Dewatering trenches will <br /> be excavated around the perimeter of each mining area in prior to mining operations <br /> commencing. The depth of the ditches will vary as the mining progresses deeper into the <br /> alluvium in order to maintain the groundwater level below the active mining bottom surface, and <br /> therefore minimize the exposed groundwater surface area. The dewatering ditches will flow to a <br /> collection pond, from which the water will be discharged into the Cache La Poudre River. <br /> The equipment and facilities may include, but are not limited to the following: <br /> Processing Equipment <br /> Screens, crusher, conveyors, stackers, and other miscellaneous processing equipment. <br /> Earth Moving Equipment <br /> Dozers, loaders, scrapers, excavators, and compactors will be used for mining and earth <br /> moving operations. <br /> Miscellaneous Equipment <br /> Dewatering pumps, electrical trailer, generator trailer, small portable generators and <br /> watering trucks will be used as needed. <br /> J-2 Contracting Company <br /> J&T Consulting,Inc. DPG Mining Site <br /> �' <br /> DRMS 112 Permit Application—Technical Revision No. 1 <br />