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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />O09A -Section 16 Watershed SEDCAD Model Input <br />Structure 2, Subwatershed 1 (S2-SWS1) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 6.02 acres <br />Undisturbed: 32.07 acres <br />Total Subwatershed Area: 38.09 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />225 1300 Grassed Waterway <br />25 800 Diversion <br /> Curve Number.' 48 <br /> Sediment: <br />• Rainfall Factor: 19 <br /> <br /> Soil Erodibility Factor: 0.28 <br /> Length-Slope Factor: <br /> Elevation Length Slope <br /> 195 1100 17.7% <br /> 125 625 20.0% <br /> 150 950 15.8% <br /> Average <br /> 156.7 891.7 17.8% <br /> Control Factor: 0.06 <br /> Practice Factor: 0.82 <br />1/ 1' <br />u <br />