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MINING PLAN EXHIBIT C <br />deep. The soil covering the gravel averages 0 to 8 inches deep <br />with a layer of overburden ranging from 20 to 60 inches deep. <br />North of the site between the county road and the gravel face is an <br />area mined out some time in the past. We suspect the material from <br />this area was used when I-25 was built. Very little reclamation <br />was done on the site and there appears to be little or no salvage- <br />able topsoil on the old mine area. We expect to re-disturb approx- <br />imately 2.17 acres ± of this area as shown on the Pre-Mining Plan <br />map, Map Exhibit E-1. A north facing unreclaimed slope was left by <br />the old miners and the gravel was left exposed when the old mining <br />operations ended. In some areas a near vertical face exists on <br />this old mining face. On the east end we will blend the old slope <br />with new east facing slope in the northeast corner of the site but <br />no reclamation will be done on the area outside the new permit <br />area. <br />We plan to start mining on this old face and use the mined out <br />area within the permit boundary as plant site and stockpile areas. <br />This will create a level area that "day lites" out the hill on the <br />north side, leaving an amphitheater like basin in the hillside when <br />mining ends. The east and south slopes will be graded 3:1 and the <br />west slope will be the natural hillside on the west died of the <br />drainage. <br />The material will be used to supply asphalt base, road base <br />and pit run fill material to our clients. The land will remain <br />rangeland as mining progresses and once reclamation is complete the <br />area will be reseeded so it will have the same use. Initially, a <br />slight depression will be created so surface water runoff can be <br />contained on the site until reclamation is complete. All <br />stormwater on the site will be directed to this depressed area. <br />Prior to mining a section of the upper bench will be stripped of <br />topsoil and overburden. The topsoil will be placed around the mine <br />setback or mine floor for used in reclamation. The overburden will <br />be stored in the draw on the south end of the mine. As mining <br />progresses into the deposit the east and west slope will be left <br />near vertical and reject material from the processing plant will be <br />placed adjacent to these faces. Once enough material is placed the <br />3h to 1v slope will be graded. This filling and shaping will run <br />concurrent with mining so that if mining ended prematurely only 50 <br />feet or less would need filling, grading and resoiling. The over- <br />burden stored in the south draw would be used to complete the <br />filling on this area. <br />22