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L J <br />• <br />• <br />TR -42 <br />Seneca II Mine <br />Pond 004 <br />HYDROLOGIC INPUT PARAMETERS <br />SEDCAD 4 <br />SEDCAD 4 <br />WATERSHED ID <br />WATERSHED ID <br />Subwatershed - Pond 004 SWS -4 <br />Structure 9 - SWS -3 <br />Watershed Area: <br />3.2 <br />Subwatershed - Pond 004 SWS -3 <br />Sedimentology: k Factor and Control Factor <br />Watershed Area: <br />VEGETATION <br />HYDROLOGIC <br />19.1 <br />CONTROL <br />ARFA <br />WATERSHED TYPE <br />COVER <br />Sedimentology: k Factor and Control Factor <br />FACTOR <br />FACTOR <br />(acres) <br />Reclaimed <br />VEGETATION <br />HYDROLOGIC <br />k <br />CONTROL <br />AREA <br />WATERSHED TYPE <br />COVER <br />SOIL GROUP <br />FACTOR <br />FACTOR <br />(acres) <br />Reclaimed <br />Good ( >70 %) <br />B <br />0.16 <br />0.043 <br />18.13 <br />Sagebrush <br />Fair <br />D <br />0.37 <br />0.042 <br />0.97 <br />1 19.1 <br />Total <br />0.17 <br />0.043 <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 <br />HYDROLOGIC <br />k <br />CONTROL <br />ARFA <br />WATERSHED TYPE <br />COVER <br />SOIL GROUP <br />FACTOR <br />FACTOR <br />(acres) <br />Reclaimed <br />n/a <br />n/a <br />1 <br />1 <br />3.23 <br />Total <br />1 3.2 <br />1.00 <br />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 Ialues 3:e <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, at 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 />2.05.3 -E2.0 -1.28 <br />RW90 09/07 <br />