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KENNECOTT ENERGY CORPORATI©N <br />COLOWYO MINE <br />L~ <br />0'i OA -East Taylor Watershed SEDCAD Modei Input <br />Strut#ure 4, Subwatershed 2 {S4-SVtitS2) <br />Disturbance: <br /> Topsoil & Seeded: 135,93 acres <br /> 1-2 Year Reclamat ion: 148.24 acres <br /> 3+ Year Recamaton: 424.14 acres <br /> Undisturbed: 23.21 acres <br /> Total Subwatersh ed Area: 682.52 acres <br /> Hydrology: <br /> Time of Concentration: <br /> Elevation Length Description <br /> 13 373 Upland <br /> 250 5770 Diversion <br /> 475 4191 Diversion <br /> 150 4061 Diversion <br /> 240 2150 Diversion <br /> Curve Numbsr. 62 <br /> Sediment: <br />• Rainfall Fac#or ~ $ <br /> Soil Eradibitity Factor: 0.28 <br /> Lengfh-Slope Factor: <br /> Elevation Length Slope <br /> 120 470 25,5°!a <br /> 250 1200 20.8°Io <br /> 225 1000 22.5°!0 <br /> 125 2100 6.a°I° <br /> 240 27oa 8.9°~ <br /> Average <br /> 182.0 1484.0 16.7°l° <br /> Control Factor: 0.18 <br /> Practice Factor: 0.40 <br /> <br /> Exh. 7-ET-13 <br />Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />