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EXHIBIT D MINING PLAN • 32 ROAD GRAVEL PIT The proposed 32 Road Gravel Pit is located approximately 5 miles south of Clifton an the east side of Colorado Highway 146. The gravel pit area is located on a high hill south of the Colorado River. The total disturbed area is 53 acres. The gravel pit area contains 52 acres and the haul road contains one acre. Mini~hg will start on the east side of the pit and proceed to the welt. A processing and stockpile site will be first located in the eastern portion of ttie' pit. The processing site will move to the west ahead of the mining until enough area has been mined to relocate it to an area in which the gravel has been removed. Mining will be done~iri phases containing from 5 to l0 acres. Topsoil • will be s#ripped and the area mined out before another area is disturbed. The time require_d_to complete_the mining of the entire area is expected to take .six years. _ . _ . _. __ TISe'first phase of the mining operation will be to strip and stockpile topsoil: Topsoil Wi11 be removed and stockpiled using scrapers. The topsoil will be stockpiled in the processing site. Topsoil and overburden depth vary in thickness from two to five feet. The dext phase of t?ie mining operation will be to mine the sand and gravel and fralisport the material to the processing site. Mining wi77 b~ done With frortt end loaders excavating and loading the material inl;o"'tri-~ks` to bd transported to the processing site. The pit run agcjr"egate'will be crushed and screened at the processing site to make`gravel'products~for road construction. • Gravel depth"varies from 12 to 17 feet, with the underlying material being. shale.