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1999 <br />Yoart Mine * 13-12 Drainage and Sediment Control Plan • 9A <br />Soil Conservation Service (SCS), 1979. EngirteeringFieldManua/. U.S. Department of Agriculture, <br />Washington D.C. <br />Soil Conservation Service (SCS), 1983. Sails of Colorado, Lntt Factory and Erodibility Hydrologic Groupingr. <br />SoIl Conservation Service (SCS), 1986. Urbax Hydrology forSma!lWatershed, TR-S5. Soil Conservation <br />Service, United States Department of Agriculture, Washington, D.C. <br />• <br />• <br />Montgomery Watson Mining Grout' * 165 S. Union Bou/evar~ Suite 460 * Lnkervood, Colorado 80228 * (303J 763-5140 <br />TR-30 Revised 03/07 <br />