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KENNECOTT ENERGY CGIRPQRAT[ON <br /> CUt_OWYO MINE <br />• <br /> 010A -East Taylor Watershed SEDCAD Mfldet Input <br /> Structure 1, Subwatershed 1 {S1-5WS1} <br /> Disturbance: <br /> Topsoil & Seeded: 0 acres <br /> 1-2 Year Reclamation: 0 acres <br /> 3+ Year Rec{ama#ian: 33.78 acres <br /> Undisturbed: 27.7 acres <br /> Total Subwatershed Area: 61.48 acres <br /> Hydra{ogy: <br /> Tr`me of Concentration: <br /> Elevation t_ength Description <br /> 13 273 Up{and <br /> 75 427 Grassed Waterway <br /> 75 3698 Diversion <br /> 75 346 Diversion <br /> Curve lVumt~er. 52 <br /> Sediment: <br /> Rainfall Factor.' 19 <br /> Soi! Erodibrlify Factor. 0.28 <br /> Length-Sfope Factor: <br /> Elevation Length Slope <br /> 90 450 20.0% <br /> 125 850 14.7% <br /> 200 900 22,2% <br />Average <br />138 733 19.0% <br />Control Factor. 0.04 <br />Practfce Factor: 0.61 <br /> <br />Exh. 7-ET-9 Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />