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Access Road 1 will be backfilled and graded. The original road cut was below <br />sections of nearly vertical rock faces. Fill on this road will begin near the center of <br />the road and extend to a height of approximately 15' leaving some vertical rock <br />faces. Care will be taken when filling this area to use the best soils for final cover. <br />Excess material from this area will be used to construct a new access road to the <br />upper buildings. The new road will be west of reclaimed Access Road 1. <br />Additional material, if needed, will be hauled in from the Unit Train Loadout Area. <br />Regrading of the lower area and the preparation plant will begin with clean -up of <br />refuse and coal stockpiles. All exposed coal residue or coal waste will be placed <br />in the CRDA -1. Concrete and other non -toxic material remaining after demolition <br />of the wash plant, shop and reclaim tunnel will be utilized to construct the new <br />access road and backfill a portion of Pond 8. Additional soils will be graded over <br />this fill to establish the final contours shown on Exhibit 6C. Again, topsoil was not <br />salvaged for this area, so some of the best available soil in this area will be used <br />as the final cover. <br />Reclamation of this area will include Haul Road 1. The 9.5' diameter conveyor <br />culvert under this area leading under the highway was left in place. The conveyor <br />culvert was demolished and backfilled where it emerged from the ground west of <br />the 1 -70 frontage road. A minimum of 100 -feet of culvert was filled with soil. The <br />4 -inch diameter mine dewatering pipe which ran through the conveyor culvert to <br />outfall 001 was abandoned. <br />The drainage plan for the South Portal is shown on Exhibits 6C and 26. Run -off <br />calculations are presented in Appendix 14 -6, pages 14 -6 -1 through 14- 6- 18xxiii. <br />The drainage ditches will be constructed except where they cross pond 8 and <br />pond 9. Pond 8 will receive interim run -off from ditch segments E, F and G. <br />Pond 9 will receive interim run -off from the RSRDA upper diversion ditch, <br />segments A, B and C, and a portion of the lower bench of the RSRDA. The <br />ditches will temporarily discharge into the two ponds to provide sedimentation <br />control until their removal is approved by the DMG. The ditches will be <br />constructed through the reclaimed ponds so the final drainage configuration is <br />complete. Ditch section H -H will be constructed in conjunction with pond <br />removal. Demonstration that Ponds 8 and 9 are no longer necessary is <br />presented in Appendix 14 -12 and DRMS's approval of TR -61 allows for removal <br />of both ponds. <br />Miscellaneous grading for the site will be at the A substation, Light Use Road 1, <br />and the Water tank shown on Exhibit 6A, Tab Section 13. Grading of these sites <br />will involve minor cuts and fills to blend in with adjacent surface contours. 13- <br />Substation was removed and the area graded during 2002. <br />The location of a new 2" natural gas pipeline was added to Exhibit 6C with the <br />approval of MR -77 in April 2012. The installation of the gas line will re- disturb an <br />area approximately 240' long and 5' wide across the reclaimed Pond 8 area. This <br />gas line will remain as a permanent feature, providing gas to the current property <br />owner, and will not be reclaimed. The new disturbance will be re- seeded with the <br />permanent seed mixture shown on Table 14 -8. <br />MR -77 14 -8 (Rev. 4/12) <br />