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Regrading of the lower parking area and the preparation plant will begin <br />with clean-up of refuse and coal stockpiles. This material will be placed in <br />the RSRDA. Concrete, asphalt and other non-toxic material remaining <br />after demolition of the surface facilities wilt be dozed into the area to be <br />backfilled along the east edge of this site. Additional soils will be graded <br />over this fill to establish the final contours shown on Exhibit 6C. Again <br />topsoil was not salvaged for this area, and some of the best available soil <br />in this area will be used as the final cover. <br />Excess material taken from this area may be used as cover material for <br />the RSRDA and fill elsewhere on the site. Reclamation of this area will <br />include Haul Road 1. The 9.5' diameter conveyor culvert under this area <br />leading under the highway and over to the river will be left in place. The <br />conveyor culvert will be demolished and backfilled where it emerges from <br />the ground west of the I-70 frontage road. A minimum of 100-feet of <br />culvert will be filled with soil. The 4-inch diameter mine dewatering pipe <br />which runs through the conveyor culvert to outfall 001 will be incorporated <br />into the backfill so it emerges from the ground surface west of the <br />frontage road near the river 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 <br />below sections of nearly vertical rock faces. Fill on this road will begin <br />near the center of the road and extend to a height of approximately 15' <br />leaving some vertical rock faces. Care will be taken when filling this area <br />to use the best soils for final cover. <br />The drainage plan for the South Portal is shown on Exhibits 6C and 26. <br />Run-off calculations are presented in A e <br />throw h 14- - inage ditches will be constructed except whe <br />~• ey cross pond 8 and pond 9. The ditches will temporarily discharge into <br />i the two ponds to provide sedimentation control un <br />~~ proved by the DMG. Once nds is approved, the <br />~°J7'~ ditc e constructed "through" the reclaimed ponds so the final <br />drainage configuration is complete. <br />„~'~~C' <br />Miscellaneous grading for the site will be at the A and B substations. <br />Light Use Road 1, and the Water tank shown on Exhibit 6A, Tab Section <br />13. Grading of these sites will involve minor cuts and fills to blend in with <br />adjacent surface contours. <br />• 14-8 (Rev. 1 /01) <br />