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Material will be placed in an embankment only when its moisture content is within acceptable levels to <br />achieve design compaction. <br />Temporary erosion control measures (ditches, berms, straw dikes, silt fence) will be utilized during <br />embankment construction to minimize sedimentation and erosion until permanent control measures can <br />be established. Immediately upon completion, measures will be taken to stabilize all embankments with <br />vegetation cover or oilier means as approved by the regulatory authority to minimize erosion. Where a <br />vegetation cover is used, consideration shall be given to providing an appropriate growth medium. <br />Drainage. Each access road not within areas disturbed by mining and reclamation activities will be <br />designed, constructed and maintained to have adequate drainage using ditches and culverts to safely <br />convey the peak runoff from a 10-year, 24-hour precipitation event while maintaining a minimum of <br />one toot of freeboard to the top of the road embankment (see Exhibit 13-10 for typical details of <br />drainage structuresl. <br />Drainage ditches will be placed at the toe of all cut slopes formed by the construction of haul roads. <br />Water will be intercepted before reaching a large fill and drained safely away in accordance with the <br />requirements of 4.03.1. Water from a fill will be released below the fill through conduits or in <br />adequately lined channels and will not be discharged onto the fill. <br />When road ditches discharge onto open terrain, a number of measures will be taken to protect the • <br />terrain from erosion. SCC will utilize measures as revegetation, riprap, straw dikes, and silt fence to <br />protect the terrain from erosion. When the road ditch discharges onto an area disturbed by road <br />construction, the terrain will be revegetated or riprapped if necessary to control runoff. Temporary <br />measures to reduce erosion (straw dikes, containment ditches, silt fences, etc) will be employed while <br />the area is undergoing revegetation such as straw dikes, containment ditches, etc. <br />u <br />TR-50 32 Revised 04/05 <br />