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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• 002A -Work Area Watershed SEDCAD Model Input <br />Structure 2, Subwatershed 1 (S2-SWS1) <br />Disturbance: <br />Topsoil & Seeded: 6.62 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 0 acres <br />Undisturbed: 2.04 acres <br />Total Subwatershed Area: 8.66 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />60 1200 Grassed Watervvay <br /> Curve Number: 77 <br />• Sediment: <br />Rainfall Factor: <br />19 <br /> <br /> Soil Erodibility Factor: 0.28 <br /> Length-Slope Factor.' <br /> Elevation Length Slope <br /> 60 1200 5.0% <br />Average <br />60 1200 5.0% <br />Control Factor. 0.63 <br />Practice Factor.• 0.50 <br />• <br />