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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />O09A -Section 16 Watershed SEDCAD Model Input <br />Structure 3, Subwatershed 1 (S3-SWS1) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 25.30 acres <br />3+ Year Reclamation: 51.73 acres <br />Undisturbed: 10.00 acres <br />Total Subwatershed Area: 87.03 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />110 1775 Upland <br />195 925 Grassed Waterway <br />50 1375 Diversion <br />Curve Number <br /> Sediment: <br />• Rainfall Factor: <br /> <br /> Soil Erodibility Factor: <br /> Length-Slope Factor: <br /> Elevation Length <br /> 100 1650 <br /> 200 800 <br /> 225 1050 <br />Average <br />175.0 1166.7 <br />Control Factor: <br />Practice Factor: <br />Slope <br />56 <br />19 <br />0.28 <br />6.1% <br />25.0% <br />21.4% <br />17.5% <br />0.03 <br />0.44 <br />I1 1' <br />u <br />