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KENNECOTT ENERGY CORPORATION <br />COLOWYO MINE <br />• <br />007A -Prospect Watershed SECICAD Model Input <br />Structure 5 Subwatiershed 1 {S5-SWS1) <br />Qisturbance: <br />Topsoil & Seeded: 0.62 acres <br />1-2 Year Reeiamatian: 0 acres <br />3+ Year Reclamation: 0 acres <br />Undisturbed; 16.0 acres <br />Total Subwatershed Area: 16.62 acres <br />Hydrology: <br />Time of Concentrafion: <br />Elevation Length Description <br />262.5 14fl6.64 Diversion <br />Curve Number. ~ <br />Sediment: <br />• Rainfall Factor.' 19 <br />Sail Erodibilify Fac#or: 0.28 <br />Length-Slope Fac#or: <br />Elevation Length Siape <br />250 650 38.5°10 <br />1$0 350 51.4°10 <br />Average <br />215 500 44.5°!0 <br />Control Factor. 0.10 <br />Practice Factor: 0•$8 <br />• <br />Exh. 7-PP-17 <br />Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />