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holes and the fact that the cuttings will be used to backfill the holes prior to shooting, no further reclamation work <br />• is planned. <br />A temporary crossing of Fish Creek will he required for approximately 2 weeks for this investigation. The <br />crossing will be provided by placing a culvert of adequate capacity to pass the ]-year, 6 -hour storm event in the <br />channel. Approximately 33,920 acres in the Fish Creek drainage basin contribute to this point. The peak Flow was <br />determined to be 7.10 cfs for the ]-year, 6 -hour storm with a minimum culvert size of 15 inches required to pass <br />this flow. Adequate fill material for the anticipated vehicle usage will be provided over the culvert. Immediately <br />after the crossing is no longer needed for operations the culvert and fill will be removed and fill sloped rounded or <br />reduced and shaped to conform to the site, to adjacent terrain, and to meet natural drainage restoration standards. <br />Any areas from which topsoil has been removed shall be recovered with topsoil in accordance with 4.06.4(2) and <br />re- vegetated in accordance with 4.15. <br />9 Right LonZwall Panel - Section 14, TSN, R86W <br />In order to facilitate the progression of mining in the 9 Right longwall panel, Twentymile will initiate mining as <br />shown on Figure 16F. The longwall will start approximately on April I and complete mining in this limited area by <br />the end of May, barring any unforeseen circumstances. The area to be mined under this revision is contained within <br />the boundaries of State Lease CO -3229. <br />8 Right Inbv Cross Panel Development <br />The 8 Right Irby development will result in driving three entries, which are located on Figure 16h across the 8 Right <br />panel. The entries will be approximately 18' x 9', totaling 4,275 linear feet. (This includes entries and cross - cuts.) <br />• This development will enhance both development mining timing and safety. <br />After the entries have been driven, they will be backfilled with grout, or a similar type of material, prior to being <br />mined through by the longwall. The backfilling will provide support for the longwall when this area is mined by the <br />longwall. <br />7 Right Inbv Cross Panel Development <br />The 7 Right Irby development will result in driving three entries, which are located on Figure 16h across the 7 Right <br />panel. The entries will be approximately 18' x 9', totaling 4,275 linear feet. (This includes entries and cross - cuts.) <br />This development will enhance both development mining timing and safety. <br />After the entries have been driven, they will be backfilled with grout, or a similar type of material, prior to being <br />mined through by the longwall. The backfilling will provide support for the longwall when this area is mined by the <br />longwall. <br />6 Right Inbv Cross Panel Development <br />The 6 Right Inby development will result in driving three entries, which are located on Figure 16h across the 6 Right <br />panel. Tile entries will be approximately 18' x 9'. totaling 4,275 linear feet. (This includes entries and cross - cuts.) <br />This development will enhance both development mining timing and safety. <br />After the entries have been driven, they will be backfilled with grout, or a similar type of material, prior to being <br />• mined through by the longwall. The backfilling will provide support for the longwall when this area is mined by the <br />longwall. <br />MR 97 -154 2.05 -6 Revised 9/9/97 <br />