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• <br />Seneca II Mine <br />Pond 004 <br />HYDROLOGIC INPUT PARAMETERS <br />SEDCAD 4 <br />WATERSHED ID <br />Structure 9 - SWS-3 <br />Subwatershed - Pond 004 SWS-3 <br />ershed Area: <br />19.1 <br />imentology: k Factor and Control Factor <br />WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR (acres) <br />Reclaimed Good (>70%) B 0.16 0.043 18.13 <br />Sagebrush Fair D 0.37 0.042 0.97 <br />Total F 1 19.1 <br />0.17 0.043 <br />• <br />0 <br />SEDCAD 4 <br />WATERSHED ID <br />Structure 9 - SWS-4 <br />Subwatershed - Pond 004 SWS-4 <br />Watershed Area: <br />3.2 <br />Sedimentology: k Factor and Control Factor <br /> VEGETATION HYDROLOGIC k CONTROL ARFA <br />WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR (acres) <br />Reclaimed n/a n/a 1 1 3.23 <br /> <br />Total 3 2 <br />1.00 1.00 <br />The soil erodibility factor, "k-Factor", values were determined based on Seneca II soil survey information (see Tab 9, <br />Exhibit 9-1, Soil Type and Sampling Locations, and Attachment 9-6) as presented in Soils of Colorado, Loss Factors and <br />Erodibility, Soil Conservation Service, 1983. <br />The Control Factor values were adapted from the Yoast and Seneca II W permit application packages These . a! .es -, <br />presented in each permit in the Drainage and Sediment Control Plan attachment, which is located in Tab 13 of the <br />respective permit documents. The values are based on Renard, et al. (Renard, K.G., Foster, G.R., Weesies, G.A., <br />McCool, D.K., and D.C. Yoder, coordinators, 1996. Predicting Soil Erosion by Water: A Guide to Converation Planning with <br />the Revised Universal Soil Loss Equation (RUSLE). Agricultural Handbook 703. U.S. Department of Agriculture. <br />TR-42 <br />7-6c.1 A-27 <br />Revised 09/07