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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• O07A -Prospect Watershed SEDCAD Model Input <br />Structure 1, Subwatershed 1 (S1-SWS1) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 2.70 acres <br />Undisturbed: 10.95 acres <br />Total Subwatershed Area: 13.65 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />100 400 Grassed Waterway <br />25 1100 Diversion <br />Curve Number.' 49 <br />Sediment: <br />• Rainfall Factor: 19 <br />Soil Erodibility Factor: 0.28 <br />Length-Slope Factor: <br />Elevation Length Slope <br />135 450 30.0% <br />140 550 25.5% <br />Average <br />137.5 500 27.7% <br />Control Factor: 0.06 <br />Practice Factor.' 0.80 <br />• <br />