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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />O07A -Prospect Watershed SEDCAD Modei Input <br />Structure 4, Subwatershed 3 (S4-SWS3) <br />Disturbance: <br />Topsoil 8 Seeded: 0 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 7.73 acres <br />Undisturbed: 16.67 acres <br />Total Subwatershed Area: 24.40 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />300 1475 Grassed Waterway <br />50 1300 Diversion <br />Curve Number: 50 <br />Sediment: <br />Rainfall Factor.' 19 <br />Soil Erodibility Factor: 0.28 <br />Length-Slope Factor: <br />Elevation Length Slope <br />160 1250 12.8% <br />180 700 25.7% <br />Average <br />170 975 19.3% <br />Control Factor: 0.05 <br />Practice Factor.' 0.74 <br /> <br />