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KENNECOTT ENERGY CORPC?RATt4N <br />COLQWYQ MINE <br /> <br />0 acres <br />0 acres <br />31.11 acres <br />43.01 acres <br />74.12 acres <br />Elevation Length Description <br />25 842 Upland <br />113 983 Grassed Channel <br />188 1794 Diversion <br />Streeter Watershed SEDCA~ Mode! Input <br />Structure 5, 5ubwatershed 1 <br />Disturbance: <br />Topsail & Seeded: <br />1-2 Year Reclamation: <br />3+ Year Reclamation: <br />Undisturbed; <br />Tatal Subwatershed Area: <br />Hydralagy: <br />?'irrte of Concentration: <br />Curve Number.- 51 <br />r1 <br />f~_J <br />Sediment: <br />Rainfall Factor: 18 <br />Soil Eradibility Factor: 0.28 <br />Length-Slaps Factar. <br />Elevation length Slope <br />125 820 15.2°ta <br />T5 650 11.5°Ia <br />120 580 20.7% <br />100 660 15.2°!0 <br />Average <br />105 678 15.7%0 <br />Control Factor: 0,04 <br />Practice Factor: 0.68 <br /> <br />Exh. 7-SP-16 <br />Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />