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Seneca II Mine <br />Pond 004 <br />HYDROLOGIC INPUT PARAMETERS <br /> SEDCAD 4 <br /> WATERSHED ID <br /> Structure 9 -SWS4 <br /> Subwatershed -Pond 004 SWS4 <br />Watershed Area: <br />3.2 <br />Curve Number: <br /> HYDROLOGIC CURVE AREA <br />WATERSHED TYPE GROUND COVER SOIL GROUP NUMBER (acres) <br />POND SURFACE n/a n/a 100 3.23 <br />Total 3.2 <br /> CURVE NUMBER 100 <br />Approved Seneca II Mine curve number (CN) values are Dresented in Appendix 7-12, Pos[imin9 Drainage <br />Control. Values were adapted from Urban Hydrology for Small Watersheds, Technical Release No. 55 (7R- <br />55), Soil Conservation Service, 1986. <br /> SEDCAD 4 <br /> WATERSHED ID <br /> Structure 9 - SWS1 <br /> Subwatershed -Pond 004 SWS-1 <br />Watershed Area: <br />142.4 <br />Sedimentology: k Factor and Control Factor <br /> VEGETATION HYDROLOGIC k CONTROL AREA <br />WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR (acres) <br />Reclaimed Good (>70%) B 0.16 0.043 122.5 <br />Sagebrush Fair D 0.37 0.042 19.96 <br />Total 142.4 <br /> 0.19 0.043 <br /> SEDCAD 4 <br /> WATERSHED ID <br /> Structure 9 - SWS2 <br /> Subwatershed -Pond 004 SWS-2 <br />Watershed Area: <br />6.9 <br />Sedimentology: k Factor and Control Factor <br /> VEGETATION HYDROLOGIC k CONTROL AREA <br />WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR (acres) <br />Reclaimed Good (>70%) B 0.16 0.043 6.66 <br />Total 6.9 <br /> 0.16 0.043 <br />• <br />u <br /> <br />TR-42 7-6c.1A-26 Revised 09/07 <br />