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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• 010A -East Taylor Watershed SEDCAD Model Input <br />Structure 2, Subwatershed 2 (S2-SWS2) <br />Disturbance: <br />Topsoil & Seeded: 117.93 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation: 25.05 acres <br />Undisturbed: 0 acres <br />Total Subwatershed Area: 142.98 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />65 1450 Upland <br />360 1775 Grassed Waterway <br />140 2000 Diversion <br />Curve Number: 81 <br /> Sediment: <br />Rainfall Factor: <br />19 <br /> <br /> Soil Erodibility Factor: 0.28 <br /> Length-Slope Factor: <br /> Elevation Length Slope <br /> 50 900 5.6% <br /> 360 1800 20.0% <br /> 80 950 8.4% <br /> 225 700 32.1% <br />Average <br />178.8 1087.5 16.5% <br />Control Factor.' 0.66 <br />Practice Factor: 0.38 <br />r~ <br />~J <br />