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KENNECOTT ENERGY CC3RP4RATtON <br />COLOWYQ MINE <br />:7 <br />80TA -Prospect Watershed SEDGAD Model Input <br />Structure 1, Subwatershed 2 (S1-SW52) <br />Dis#urbance: <br />Topsail 8 Seeded: 0 acres <br />1-2 Year Reclamation; 0 acres <br />3+ Year Reclamation: 15.93 acres <br />Undisturbed; 0.37 acres <br />Total Subrnratershed Area: 16.3 acres <br />Hydrology. <br />Time of Concentration: <br />Elevation Length Clescriptlan <br />30 348.47 Upland <br />212.5 1411.04 Grassed Waterway <br />112.5 544.2$ Diversion <br />Curve Number. 56 <br />Sediment: <br />• Rainfall Factor: 19 <br />Soil Erod+bility Factor. 0.2$ <br />t_ength-Slope Factor. <br />Elevation Length Slope <br />125 fi75 1$:5% <br />200 950 21.1 °lo <br />i <br />Average <br />162.50 813 79.8°k <br />{ Control Factor.• 0.01 <br />Practice Factor: 0.39 <br />~• <br />Exh. 7-PP-10 <br />Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />