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• REMEDIAL COMPLIANCE PLAN <br />The existing spillway configurations are inadeauate for a permanent impoundment. <br />Therefore, Peabody proposes the following remedial actions to be implemented pending CMLRD <br />approval: <br />1. Replace existing 24" CMP with a proposed 24" CNP with anti -seep collar to the <br />line and grade as shown on Exhibit 7 -18. <br />2. Replace existing v-shaped emergency spillway with proposed trapezoidal channel <br />as depicted on Exhibit 7-18. <br />3. Raise the embankment to the line and grade as shown on Exhibit <br />4. Install a fence to maintain safe access to the impoundment area. <br />U <br />All material excavated from the spillway and adjacent areas, as a result of the above <br />remedial action, will be placed in one of the following locations as determined by <br />Peabody's field engineer during construction: <br />1. If the engineer determines the material to be suitable for embankment material, <br />the material will be placed and compacted within the slopes of the embankment. <br />2. If the material is excessive or not suitable for use within the slopes of the <br />embankment, the material will be placed outside the plane of the slopes on the <br />downstream side of the embankment, graded into the surrounding topography, and <br />reclaimed in accordance with Peabody's reclamation plan. This excessive <br />material will increase the stability of the embankment by increasing the <br />overall width, flattening the downstream slopes, and /or reducing the downstream <br />embankment height. Based on the field conditions encountered at the time of <br />construction, the field engineer is allowed enough flexibility to dispose of the <br />material in an acceptable manner. <br />Embankment reconstruction will be conducted in compliance with CMLRD regulations. The <br />existing embankment will be cleared of all organic matter prior to the placement- -)f new <br />fill material. The placing and spreadina of fill material will proceed `rom the lowest <br />point on the embankment in horizontal layers of such thickness as to allow for a minimum <br />compaction of 93 percent of the standard proctor. Fill material will be free , -•f sod, <br />large roots, vegetation matter, coal or coal processing waste, and frozen material. 'oth <br />the upstream and downstream slopes of the embarkment_ will be 3h:ly or flatter. r!•e <br />completed embankment, surrounding disturbed area, ,ind ,-mergency �pillr,av areas wil. s,e <br />seeded and revegetated to prevent erosion. <br />NOR 006578 <br />M <br />14 <br />A <br />