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• hours (minimum time period). However, if this pile should become inactive or <br />both "A" and "B" Pits are completely reclaimed, the remaining 231,000 (in place) <br />CY of long term spoil will be graded and tied into the undisturbed terrain, and then <br />topsanded, fertilized and revegetated. <br />The updated 1995 post-mining contour map (see Appendix Q) has been designed <br />to improve and promote positive drainage away from the "B" Pit cell area. For <br />this reason, the elevations over the "B" Pit area have been changed from those <br />shown on the 1986 plan. The final cofitours will be sloped to limit the subsurface <br />infiltration of runoff into, as well as the potential moisture saturation, within this <br />pit and its contents. This design will improve the final reclamation condition of the <br />disposal site. CEC feels that this is good business practice now that mining is no <br />longer taking place and since ash disposal will continue. However, the updated <br />post-mining contour plan, designed to be within plus or minus ten (10) feet of the <br />original ground contours, may utilize more of the excess overburden in this area. <br />Most temporary storage piles (topsand) have been flattened to a 20% slope or less. <br />This is the maximum slope encountered on original ground in the permit area. <br />Topography maps indicate that 20% slopes are maximum and the overall slope is <br />2.5%. <br />An account of acreage disturbed, reclaimed and remaining to be reclaimed is given <br />• below: <br />A & B pit disturbance 68 acres <br />Long-term spoil area 51 acres <br />•Topsoil piles A-1, A-3, B-1, B-2 23 acres <br />Roads, ponds and misc. areas 38 acres <br />Facility area 64 acres <br />Total area remaining to be reclaimed 244 acres <br />Total azea reclaimed &revegetated 180 acres <br />424 acres <br />CEC will replace 24 inches of topsand on the "A" and "B" Pit disturbance areas <br />and temporary access roads. The Long-term spoil will receive 15 inches of <br />topsand and the facilities area (includes topsand piles) will receive 6 inches of "A" <br />horizon topsand on the in-place Valent subsoil. Eighty-eight acres at 6 inches plus <br />fifty-one acres at l 5 inches plus seventy-eight acres at 24 inches adds to <br />approximately 479,000 (in place) CY. Since there are 313,000 (in place) CY <br />available, this schedule of topsand thicknesses to be applied can probably should be <br />modified downwards until quantities are reduced and material balances become <br />cleazer. Present material balance estimates indicate that all presently unreclaimed <br />areas could be backfilled with X21 inches of topsand. The above schedule is <br />• <br />114 5/96 <br />