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YOAST MINE <br />Pond 10 -Watershed W-10 <br />HYDROLOGIC INPUT PARAMETERS <br /> SEDCAD 4 <br /> WATERSHED ID <br /> Structure 3 - SWS1 <br /> Watershed W-10 (YPM-10) <br />Watershed Area: <br />61.5 <br />Curve Number: <br /> VEGETATION HYDROLOGIC CURVE AREA <br />WATERSHED TYPE COVER SOIL GROUP NUMBER acres <br />Aspen/Mountain Brush Goad (>70%) C 41 2.3 <br />Reclaimed Fair (30%<x<70%) C 71 59.2 <br />Total 61.5 <br /> CURVE NUMBER 70 <br />Curve number (CN) values used are approved Yoast Mine values (see Table 13-12.1). Values <br />were adapted from Urban Hydrology for Smal! Watersheds, Technical Release No. 55 (7-R-55J , <br />Soil Conservation Service, 1986. <br /> SEDCAD 4 <br /> WATERSHED ID <br /> Structure 3 - SWS1 <br /> Watershed W-10 (YPM-10) <br />Watershed Area: <br />61.5 <br />Sedimentology <br />k Factor and Control Factor <br /> VEGETATION HYDROLOGIC k CONTROL AREA <br />WATERSHED TYPE COVER SOIL GROUP FACTOR FACTOR acres <br />Aspen/Mountain Brush Good (>70%) C 0.28 0.042 2.3 <br />Reclaimed Fair (30%<x<70%) B 0.16 0.043 59.2 <br />Total 61.5 <br /> 0.16 0.043 <br />u <br /> <br />i <br />TR-35 13-3A-A.22 Revised 08/07 <br />