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i, :.-~ <br />In addition to seeding and mulching the surface of the outslopes, <br />erosion control mats will be placed in the groins of the fill to reduce <br />erosion from surface flows in the groins. Silt fences will be installed at <br />the toes of the outslopes, along the mid-slope bench of the south outslope <br />and at several locations along the groins to further reduce erosion yield. <br />Silt fences when properly installed will reduce sediment by 75 percent. Straw <br />bale sediment traps may be used as needed for spot sediment control. <br />Literature Cited <br />EPA 1977 Preliminary Guidance for estimating erosion on areas disturbed by <br />surface mining activities in the interior western United States. U.S. <br />Environmental Protection Agency EPA-908/4-77-005 <br />EPA 1479Evaluation of selected erosion control techniques. <br />U.S. Environmental Protection Agency EPA 600/2-79-124 <br />SCS 1981 Soil Survey of Paonia Area, Colorado: Parts of Delta, Gunnison <br />and Montrose Counties. USDA Soil Conservation Service. <br />• <br />