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<br />perimeter of the affected area. As a stabilization measure, soil <br />stockpiled for longer than one year will be seeded with a perennial sod- <br />forming grass such as western wheatgrass. Additional information regarding <br />the site's soil resources is provided in Exhibit I - Soils Information. <br />Ground water occurs at a relatively shallow depth and the majority of <br />the affected area will become open water. Sufficient topsoil will be <br />salvaged for reclamation purposes but excess soil will be sold. <br />Natural of the Deyosit <br />The material to be mined consists of unconsolidated sand, gravel, and <br />stones up to about 60 feet in thickness. The aggregate is daninately <br />siliceous and no visible evidence is present on site to suggest that any <br />refuse or acid or toxic-forming materials will be exposed by the mining <br />operation. According to the Geologic Map of Colorado (reprinted 19'75), the <br />material to be mined is alluvium (f ran work by W.W. Atwood and K.F. Mather, <br />U.S.G.S. Prof. Paper 166). The material lies disconformably over fine- <br />grained sedimentary units. <br />Mining Plan <br />It is planned that operations will begin on the northeast side of the <br />site and work toward the south and west. Ground water is encountered at a <br />depth of about three to four feet below the ground surface. The aggregate <br />will be wet mined to depths up to approximately 60 feet using a dragline. <br />Product stockpiles will be created on site and depleted as necessary. <br />Frontend loaders and dozers may be used as necessary to assist in the <br />operation, such as loading and groaning. <br />It is anticipated that the site will be mined less than one hundred <br />eighty (180) days per year. <br />-5- <br />