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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• 009A -Section 16 Watershed SEDCAD Model Input <br />Structure 1, Subwatershed 2 (S1-SWS2) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 0.21 acres <br />3+ Year Reclamation: 20.41 acres <br />Undisturbed: 0.55 acres <br />Total Subwatershed Area: 21.17 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />105 1000 Diversion <br /> Curve Number: 58 <br /> Sediment: <br />• Rainfall Factor <br />' 19 <br /> . <br /> Soil Erodibility Factor: 0.28 <br /> Length-Slope Factor: <br /> Elevation Length Slope <br /> 75 500 15.0% <br /> 150 850 17.6% <br /> Average <br /> 112.5 675 16.3% <br /> Control Factor: 0.01 <br /> Practice Factor: 0.39 <br />i• <br />