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<br />' EXHIBIT D (Cont'd) <br /> In the gravel processing plant equipment may include, bur is not <br />' <br /> limited to, a hopper, jaw crusher and roll crusher, orate:° <br />' screen, cone crusher and conve}-or. <br /> Eas t of t he railroad the sand and gravel below the over- <br />, burden varies in thickness from forty feet on the north i:o <br /> eighteen feet on the south. The deposits west of the railroad <br />' f <br />fift <br />f <br />t th <br />i <br /> rom <br />range <br />y <br />ee near <br />e r <br />ver to forty feet on tl~e~ south <br />' side of the property (see map Exhibit D-1). <br /> Excavations to da te indicate that a relatively impermeable <br />' gray shale underlies the sand and gravel deposits. This shale is <br />not always reached before excavation must be abandoned dLie to ex- <br />' cessive operating depths for a drag line type operation. <br />' No dewatering occurs at this pit. The deposit is mined wet. <br />Ylater will not be discharged from the affected land into the <br />' Arkansas river or any other river. Therefore, no Colorado Depart- <br />ment of Health NPDES permit is required. <br />' Because this is a wet pit operation fugitive dust is not a <br />' problem. Therefore, the Colorado Department of Health ha.s never <br />required an emission control permit. LVater from well number 2373F <br />' in the amount of 4.44 c.f.s. is used for industrial purposes. The <br />well is located on the plant site property. <br />' The operator's intention is to minimize disturbances to <br />' the prevailing hydrologic balance of the affected land ar.d of <br />the surrounding area and to the quality and quantity of water <br />' 7 <br />