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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• 0O2A -Work Area Watershed SEDCAD Model Input <br />Structure 1, Subwatershed 1 (S1-SWS1) <br />Disturbance: <br />• <br />Topsoil 8 Seeded: 4.12 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 0 acres <br />Undisturbed: 0 acres <br />Total Subwatershed Area: 4.12 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />60 1200 Grassed Watervvay <br />Curve Number: <br />Sediment: <br />Rainfall Factor. <br />Soil Erodibility Factor. <br />Length-Slope Factor. <br />Elevation Length <br />60 1200 <br />Average <br />60 <br />Control Factor: <br />Practice Factor: <br />1200 <br />86 <br />19 <br />0.28 <br />Slope <br />5.0% <br />5.0% <br />0.80 <br />0.38 <br />i• <br />