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<br />YOAST MINE <br />Pond 10 -Watershed W-1 <br />HYDROLOGIC INPUT PARAMETERS <br />Soils series information from Yoast Mine Permit Application Package (see Tab 9, Soil Baseline Study <br />[Nyenhuis, 1994)). Hydrologic Soil Group values are approved Yoast values (see Attachment 13-12, Table <br />13-12.2). The scil erodibility factor, "k-Factor", values are presented in Attachment 13-12, Table 13-12.2. <br /> SEDCAD 4 <br /> Structure 1 - SWS1 <br /> Watershed W-1 <br />Sedimentoiogy: Control Factor <br /> CONTROL <br />LAND USE CONDITION COVER TYFE VEGETATION FACTOR AREA (acres) <br /> <br />Undistrubed <br />Aspen/Nttn. Brush 25% canopy, 80% <br />ground cover 0.042 265.4 <br /> <br />Sagebrush 25% canopy, 80% 0.042 33.62 <br /> ground cover <br /> Herbaceous 60% ground cover O.G42 22.5 <br /> Mesic Drainage 40% ground cover 0.1 6.25 <br />Reciaimed Reclaimed 60% ground cover 0.042 6"0.22 <br /> l Road <br />H Bare 1.0 8.3 <br />Disturbed au <br />Total 402.3 <br /> Weighted Control Factor 0.063 <br />The Control Factor values are approved Yoast Mine values as presented in Attachment 13-12, Table 13- <br />12.3. The values were originally presented in Renard, et al. (1997) Predicting Soil Erosron by Water. A <br />Guide to Converaticn Planning with the F,evised Universal Soil Loss Equation (RUBLE), Agricultural <br />Handbook 703, U.S. Department of Agriculture as reported in Warner et al. (1998) as reported in Warner et <br />al. (1998). <br />• <br />TR-37 13-3A.1-A.23 Revised 02/08 <br />