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KENNECC7TT ENERGY CORPt7RATION <br />COLQWYU MINE <br />r~ <br />fL J <br />407A -Prospect Watershed S~DCAD Model Input <br />Structure 3, Subwatershed 2 (S3-SWS2} <br />Disturbance: <br />Topsoil & Seeded: 0.78 acres <br />1-2 Year Reclamation: 0 acres <br />3+ Year Reclamation. 0 acres <br />Undisturbed: 17.24 acres <br />Total Subwatershed Area: 18.D2 acres <br />Hydrology: <br />Time of Concentration: <br />Elevation Length Description <br />25 133.74 Upland <br />175 821.16 Grassed Wa#erway <br />50 1792.62 Diversion <br />Curve Number: A9 <br />Sediment: <br />Rairrfatl Fac#or: 19 <br />Salt Erodrbitity Factor: 0.28 <br />Length-Slope i=actor-. <br />Elevation Length Slope <br />225 1100 20.5°l0 <br />60 400 15.0°la <br />Average <br />143 750 17.x% <br />Gontroi Factor: 0.10 <br />Pract+ce Factor: 0.85 <br />• <br />Exh. 7-PP-13 Revision Date: 2/1/06 <br />Revision No.: TR-63 <br />