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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />008A -West Pit Watershed SEDCAD Model Input <br />Structure 3, Subwatershed 2 (S2-SWS2) <br />Disturbance: <br />Topsoil & Seeded: 0 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 42.91 acres <br />Undisturbed: 4.85 acres <br />Total Subwatershed Area: 47.76 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />150 850 Grassed Waterway <br />185 1080 Channel w/Baseflow <br />Curve Number <br />. Sediment: <br />Rainfall Factor: <br />Soil Erodibility Factor: <br />Length-Slope Factor.' <br />Elevation Length <br />80 750 <br />205 950 <br />Average <br />142.5 <br />Control Factor: <br />Practice Factor: <br />850.0 <br />55 <br />19 <br />0.28 <br />Slope <br />10.7% <br />21.6% <br />16.1 <br />0.02 <br />0.43 <br />• <br />