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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• 007A -Prospect Watershed SEDCAD Model Input <br />Structure 1, Subwatershed 2 (S1-SWS2) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 20.66 acres <br />Undisturbed: 0 acres <br />Total Subwatershed Area: 20.66 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />75 800 Upland <br />230 1100 Grassed Waterway <br />Curve Number.' S6 <br />• Sediment: <br />Rainfall Factor: 19 <br />Soil Erodibility Factor.' 0.28 <br />Length-Slope Factor.' <br />Elevation Length Slope <br />200 875 22.9% <br />100 650 15.4% <br />Average <br />150 762.5 19.1% <br />Control Factor: 0.01 <br />Practice Factor: 0.38 <br />• <br />