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~J <br />• <br />• <br />KENNECOTT ENERGY CORPOR/#TI©N <br />COLOWYq MINE <br />iJQ7A -Prospect Watershed SEDGAD Model Input <br />Structure 4, Subwatershed 3 (S4-SWS3j <br />Disturbance: <br />Topsoil & Seeded: 1.25 acres <br />1-2 Year Reclamation: Q acres <br />3+ Year Reclamation: o acres <br />Undisturbed: 16.31 acres <br />Total Subwatershed Area: 17.56 acres <br />tiydrolOgy: <br />Time of Concentration: <br />Elevation Length Description <br />25 109.79 Upland <br />175 810.14 Grassed Wa#erway <br />56.25 1244.43 Diversion <br />Curve Numbar.• 50 <br />Sediment: <br />Rainfall Fac#ar. 1 g <br />Soil Erodibilify Factor: 0.28 <br />Length-Slope Factor' <br />Elevation Lengtr~ Slope <br />175 8(10 21.9°1° <br />175 950 18.4% <br />Average <br />175 8T 5 20.1 <br />Control Factor: 0.12 <br />Practice Factor: 0.86 <br />Exh. 7-PP-16 <br />Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />