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Public Health and Environment (CDPHE). If any discharge agreements are <br />necessary, they will be obtained prior to release of any dischazge from the site. <br />The applicant will comply with all CDPHE regulations including monitoring <br />and reporting requirements for the life of the mine. <br />After the Phase 1 area is dewatered, scrapers will strip the topsoil and create the <br />berms or stockpile it. Next they will strip the overburden and use it to raise <br />structures proposed in the processing area above the 100-year floodplain <br />elevation. Any remaining overburden will be stockpiled and ultimately be used <br />in reclaiming and sloping the shore or sold. When the alluvium is sufficiently <br />dry, an excavator will place the gravel in haul trucks or on conveyors to <br />transport the material to the processing azea. As the area is mined, overburden <br />will be placed along the edges to create the shoreline of the future reservoir. <br />Topsoil will be placed on finished slopes above the high waterline and the area <br />will be seeded. After the mining has been completed, the dewatering trench <br />will be extended to include the next section to be mined and the process will <br />begin again. <br />Imported Material <br />Hall-Irwin may import materials for processing, batch or blending plants and for <br />sale at the landscape yard. <br />b. Earthmoving: sand and gravel will be excavated and loaded into haul trucks, or <br />onto conveyors which will transport the material to the processing area. <br />c. All water diversions and impoundments: the perimeter of the pond will be <br />dewatered by digging a trench approximately 37-46 feet deep to <br />claystone/siltstone material. For the initial phase the water will be pumped into <br />a settling pond before discharge to the South Platte River. Upon completion of <br />Phase 1, Phases 2-6 will likely use Pond 1 as a settling pond prior to dischazge, <br />Wash water for the processing equipment will be recycled through a settling <br />pond(s). Refer to the Mining Plan Map for locations of the ponds. Water <br />required to operate the facility has been detailed in the Temporary Substitute <br />Supply Plan (TSSP) submitted to the State Engineer's Office. A copy of the <br />TSSP application has been included in Exhibit G. <br />d. Size of the area to be worked at any one time: excluding the processing area <br />and perimeter screening berms, a maximum of 21.3 acres will be disturbed at <br />any one time. The site will be dewatered in phases as mining proceeds. <br />Initially, the dewatering trench will be located around the perimeter of the area <br />to be mined. The bottom of the pond will be exposed until mining in the area is <br />complete. Reclamation will be completed concurrently as mining progresses. <br />Once reclamation is complete the pond could be filled for water storage. <br />Mining of the remainder of the property will be completed in this same manner <br />so that reclamation of the entire site is nearly completed as the final material is <br />removed from the site. Reclamation of the site will include grading, <br />Hall-Irwin Corporation Page I S of 35 <br />MLRB 112 Permit Application <br />