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<br /> <br /> <br /> <br /> <br />1 <br />1 <br /> <br /> <br />E)~TT D <br />MINING PLAN <br />WHITEWATER PIT <br />The proposed gravel pit is located approximately one-half mile south of State Highway 141 on the <br />east side of the Gunnison River. See Exhibit B. The site is bounded by the Union Pacific Raikoad <br />on the west and by Whitewatet Creek on the north. Desert Road south from Highway 141 is the <br />present access to the site. The site borders Bweau of Land Management property on the south <br />which was used for the truck-train transfer site for the mill tailings removal project. <br />The total affected azea contains 32.2 acres. The azea to be mined contains 14 acres. The remaining <br />area to be affected includes the haul road of 0.6 acres and stockpile and plant site which contain <br />17.6 acres. A 30 foot mining setback will be maintained along the west property line and a 100 <br />foot mining setback will be maintained along Whitewater Creek. Mining will start on the south side <br />of the property and proceed to the north. See Exhibit C. <br />Mining will be done using front end loaders. hydraulic excavators, dozers and trucks. The mining <br />' operation consists of I }stripping, 2) dewateting and 3}mining the sand and gravel deposit. <br />1). The topsoil and overbwden which overlays the sand and gravel deposit is stripped using <br />' dozers, loaders and trucks. The material will be stockpiled arotmd the perimeter of the <br />pit for later use in backfilling of the previously mined area. The top 4 to 6 inches of topsoil <br />will be stockpiled sepazably form the overburden for later use in the reclamation of <br />' distwbed <br />areas. <br />2). The area stripped is next trenched using a hydraulic excavator. A pump is placed in the <br />' Mining will star[ during the 1999 construction season after all permits have been acquired. The <br />total life of the pit will be five to ten yeazs. If the pit is used for construction material for a <br />Highway 50 project, the life of the pit will be ftve years. <br />1 <br />trench to dewatet the excavation. The ground water will pumped to Whitewater Creek. <br />' 3). The sand and gravel deposit will be mined using a front end loader. The material will either <br />feed directly into a crusher or loaded into trucks and stockpiled. After all the sand and <br />' gravel has been mined tiom the area, the sides of the pit will be sloped using a dozer. <br />The site will be mined starting on the south side of the pit and proceed to the north. The azea will <br />' be mined in two of three phases ranging in size from 3 to 7 acres. Overburden from the fist area <br />will be stockpiled north of the excavation and pushed into the excavated azea after the gravel has <br />been removed. The southeast portion of the site will be leveled and graded for stockpiles, crusher <br />t and asphalt plant site. A haul road will be constructed from the site north across Whitewater Creek <br />[o Foster Lane. See Exhibit C. <br /> <br /> <br />