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<br />Proposed Mining Process for Each Section <br />Before any mining commences, the operator will install a dewatering trench around the <br />mining area. This water will be pumped into the Rural Ditch once an agreement has been <br />reached with the ditch company. The applicant will obtain a discharge permit from the <br />Colorado Department of Public Health and the Environment (CDPI-IE) prior to any <br />discharge from the site and will comply with all CDPHE regulations including monitoring <br />and reporting requirements for the life of the mine. <br />After the section is dewatered, scrapers will strip the topsoil and stockpile it. Next they <br />will snip the overburden and use it to create a berm around the section. The overburden <br />will ultimately be used in reclaiming and sloping the shore. When the alluvium is <br />sufficiently dry, an excavator will place the gravel in haul trucks which will transport the <br />material to the processing area. As the area is mined, overburden will placed along the <br />edges to create the shoreline of the future lake. Topsoil will be placed on finished slopes <br />and the area 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 begin again. <br />b. Earthmoving: sand and gravel will be excavated and loaded into haul trucks which will <br />transport the material to the processing area. <br />c. All water diversions and impoundments: the perimeter of the pond will be dewatered by <br />digging a trench approximately 35 feet deep to bedrock. The water will pumped into a <br />settling pond and discharged into an existing ditch on the property. Wash water for the <br />processing equipment will be recycled through a series of small ponds within the /J~ <br />processing site (see Mining Plan Map). All water required to operate the facility will be ,./yt~V71 <br />provided by the existing water rights associated with the property. We are in the process y'~'~ <br />of contacting the ditch companies regarding ditch crossings, possible relocation of existing ~' <br />facilities and discharge of dewatering water. No ditches will be disturbed without prior <br />authorization of the appropriate ditch company. <br />d. Size of the area to be worked at any one time: excluding the processing area and <br />perimeter screening berms, a maximum of I S acres will be disturbed at any one time. The <br />site will be dewatered in phases as mining proceeds. Initially, the dewatering trench will <br />be located around the perimeter of the area to be mined. The trench will be relocated to <br />the bottom of the reclaimed slope as mining is completed for each phase. The bottom of <br />the pond will be exposed until the first 6 phases of mining have been completed. Once <br />phase 7 begins, dewatering of [he initial phases will be discontinued and the pond will be <br />allowed to fill with ground water. Mining of the remainder of the property will be <br />completed in this same manner so that reclamation of the entire site is nearly completed as <br />the final material is removed from the site. Concurrent reclamation of the site will include <br />grading, replacement of topsoil and seeding of the pond embankments. Undisturbed areas <br />will be managed as irrigated pasture or other appropriate cover crop until mining <br />commences on each phase. <br />Ha!!-Irwin Mining Proposes! jor the Shores - MLRB ! I1 Permit 13 <br />