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KENNECOTT ENERGY CQRPORATiON <br />COLOWY4 MINE <br />• <br />• <br />r~ <br />U <br />010A -East Taylor Watershed 8E©CAD Mpdel Input <br />Structure 2, Subwatershed 1 (S2-SWS1) <br />Risturbance: <br />Topsoil & Seeded: 7.08 acres <br />1-Z Year Reclamation: 24.88 acres <br />3+ Year Reclamation: 18..24 acres <br />Undisturbed: 182.82 acres <br />Tote( Subwatershed Area: 233.02 acres <br />Hydrology: <br />Trine of Concentration: <br />Elevation Length <br />13 657 <br />250 942 <br />275 2674 <br />63 1138 <br />Curvy Number: <br />Sediment: <br />Rainfall Factor: <br />Soit Erodibitity Factor: <br />Length-Stops Factor. <br />Elevation <br />250 <br />300 <br />2oa <br />150 <br />200 <br />Average <br />220 <br />Contra! Factor. <br />Practice Factor: <br />Description <br />Upland <br />Grassed Waterway <br />Diversion <br />Diversion <br />50 <br />18 <br />0.28 <br />Length <br />1000 <br />1300 <br />750 <br />1200 <br />700 <br />Slope <br />25.Q% <br />23.1 °lo <br />26.7% <br />12.5°fo <br />28.6% <br />890 <br />23.2% <br />0.09 <br />0.79 <br />Exh. 7-ET-10 <br />Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />