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• <br />Peabody Sage Creek Mine <br />PECOCO Pond Design <br />HYDROLOGIC INPUT PARAMETERS <br />SEDCAD 4 <br />WATERSHED ID <br />Structure 14 - SWS1 <br />Channel PM- 9Upper <br />Watershed Area: <br />294.0 <br />Sedimentology: k Factor and Control Factor <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 />0.24 <br />0.043 <br />294.00 <br />Total <br />294.0 <br />0.24 <br />0.043 <br />SEDCAD 4 <br />WATERSHED ID <br />Structure 14 - SWS2 <br />Channel PM- 9Upper <br />Watershed Area: <br />6.8 <br />Sedimentology: k Factor and Control Factor <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 />Topsoil Stripped <br />Bare <br />C <br />0.29 <br />1 <br />6.8 <br />Total <br />6.8 <br />0.29 <br />1.000 <br />The soil erodibility factor, "k- Factor ", values were determined based on Seneca 11 soil survey information (see Tab 9, <br />Exhibit 9 -1, Soil Type and Sampling Locations, and Attachment 9 -6 of the Seneca 11 Mine PAP) as presented in Soils of <br />Colorado, Loss Factors and Erodibiliy, Soil Conservation Service, 1983. <br />The Control Factor values were adapted from Seneca Coal Company mine permit application packages. They are <br />representative of regional conditions and previously approved by CDRMS in the Seneca 11 Mine PAP, Permit C -80 -003. <br />The values are based on Renard, et al. (Renard, K.G., Foster, G.R., Weesies, G.A., McCool, D.K., and D.C. Yoder, <br />coordinators, 1996. Predicting Soil Erosion by Water: A Guide to Converation Planning with the Revised Universal Soil <br />Loss Equation (RUSLE) . Agricultural Handbook 703. U.S. Department of Agriculture. <br />2.05.3 -E2. D -1.44 <br />Revised 12/09 <br />