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• Regrading of the lower parking area and the preparation plant will begin with <br />clean-up of refuse and coal stockpiles. This material will be placed in the <br />RSRDA. Concrete, asphalt and other non-toxic material remaining after <br />demolition of the surface facilities will be dozed into the area to be backfilled <br />along the east edge of this site. Additional soils will be graded over this fill to <br />establish the final contours shown on Exhibit 6C. Again topsoil was not <br />salvaged for this area, and some of the best available soil in this area will be <br />used as the final cover. <br />Excess material taken from this area may be used as cover material for the <br />RSRDA and fill elsewhere on the site. Reclamation of this area will include <br />Haul Road 1. The 9.5' diameter conveyor culvert under this area leading <br />under the highway and over to the river will be left in place. The conveyor <br />culvert will be demolished and backfilled where it emerges from the ground <br />west of the I-70 frontage road. A minimum of 100-feet of culvert will be filled <br />with soil. The 4-inch diameter mine dewatering pipe which runs through the <br />conveyor culvert to outfall 001 will be incorporated into the backfill so it <br />emerges from the ground surface west of the frontage road near the river <br />bank. <br />Access Road 1 will be backfilled and graded when no longer needed for <br />access to the portal bench or the RSRDA. The original road cut was below <br />sections of nearly vertical rock faces. Fill on this road will begin near the <br />• center of the road and extend to a height of approximately 15' leaving some <br />vertical rock faces. Care will be taken when filling this area to use the best <br />soils for final cover, <br />The drainage plan for the South Portal is shown on Exhibits 6C and 26. Run- <br />off calculations are presented in Appendix 14-6, pages 14-6-1 through 14-6- <br />18ix. The drainage ditches will be constructed except where they cross pond <br />8 and pond 9. Pond 8 will receive interim run-off from ditch segments E, F <br />and G. Pond 9 will receive interim run-off from the RSRDA upper diversion <br />ditch, segments A, B and C, and a portion of the lower bench of the RSRDA. <br />The ditches will temporarily discharge into the two ponds to provide <br />sedimentation control until their removal is approved by the DMG. Once pond <br />removal is approved, the ditches will be constructed "through" the reclaimed <br />ponds so the final drainage configuration is complete. Ditch section H-H' will <br />be constructed after pond removal is approved. <br />Miscellaneous grading for the site will be at the A and B substations. Light <br />Use Road 1, and the Water tank shown on Exhibit 6A, Tab Section 13. <br />Grading of these sites will involve minor cuts and fills to blend in with adjacent <br />surface contours. <br />u <br />14-8 (Rev. 6/02) <br />