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Page 10 <br />will be stored on-site for subsequent use in moisture conditioning the <br />fill material before compaction. <br />J BACKFILL AND COMPACTION <br />After the coal waste layers have reached an elevation of four feet less <br />~ than the grade elevations shown on the Reclamation Plan, topsoil back- <br />~ filling operations will be conducted to place approximately four feet of <br />I additional cover material. A dozer (D-7 or D-9 Caterpillar) and scraper <br />(small Caterpillar) will be used to place and compact the cover material <br />in eight-inch loose thickness lifts. A sheep's foot compactor may also <br />J be used to compact the cover material near optimum moisture to achieve at <br />least 90% compaction. <br />ACCESS ROAD <br />The access road to Pit No. 6 (from the south) will be altered as needed to <br />accommodate the operation. The road will be constructed on the fill material <br />1 and coal waste in the disposal area. <br />I SURFACE WATER DIVERSION <br />During the spring of 1982 a permanent surface water diversion ditch will be <br />constructed around the perimeter of the planned disposal area in Pit No. 6. <br />The lines and grades of the ditch will be as shown on the Reclamation Plan. <br />11 Minor cut slopes in residual soil or bedrock near the upper reaches of the <br />l drainage ditch will be required for adequate slopes in the ditch; cut slopes <br />J will not exceed 1'x:1. Hydrologic calculations confirming the drainage design <br />~ are presented i.n Appendix A. <br />The diversion ditch will divert surface water around the waste fill and em- <br />bankment and will empty into the natural drainage east of the embankment. <br />The "V" ditch will have a minimum grade of 1~ percent and will be constructed <br />to a minimum depth of 18 inches and will be at least five feet across the <br />tOp. To control both siltation and erosion, the ditch will be planted with <br />I erosion resistant and water tolerant vegetation. <br />GRADING AND FINAL CONTOUR <br />~ As recommended by Cooper & Clark grading will be done according to the <br />Reclamation Plan to return the disturbed areas to a smooth gradual slope <br />