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placed in the backfill. Once the waste material reaches its designed height, the rema' der of the excavation will be <br />• covered with backfill material surrounding the portal excavation. Although final ding of the backfill has not been <br />completed, a monitoring well has been installed. Until fmal grading is compl ed, the well will be monitored for <br />water level on a quarterly basis. Please refer to Exhibit 29 for frequency and eters that will be monitored after <br />final grading has been completed. Please refer to the Reclamation P Map (Map 29) for the post-mining <br />topography. The remaining structures and facilities including the shop/o ce building and the mine scrapyard will be <br />maintained to be utilized in the planned operations of the No. 6 Mine. <br />When no longer required as support facilities, the shop/office bui ing and scrapyard will be removed from the site. <br />The existing base material will be graded to ensure that th planned post-mining topography will be achieved <br />following the covering operations. If excess base material i present, it will be transported to the waste disposal site <br />and handled in accordance with the operations described i xhibit 21, Waste Disposal Site. The area and associated <br />pad will be covered with a minimum of four (4) feet o reviously excavated material and regraded to blend in with <br />the reclaimed topography. The entire regraded area w' be left in a roughened condition to minimize topsoil slippage. <br />The topsoil, which was temporarily stored adjacen o the No. 9 Portal area, will then be redistributed over the area to <br />a depth of 6 inches. The entire area with the a eption of the No. 9 dewatering system below old County Road 13 <br />will be returned to apost-mining land use of ropland or pastureland. Therefore, the area will be seeded with the <br />cropland or pastureland seed mixture. Thep rtion of the No. 9 dewatering system located below old County Road 13 <br />will be returned to apost-mining land us of rangeland/wildlife; and therefore, the rangeland/wildlife seed mixture <br />will be utilized. It is anticipated that a geland drill will be used for the seeding; however, if the seed mixture is <br />broadcast seeded, the seeding rate wi be doubled. The reseeded area will then be straw mulched, with the mulch <br />applied at a rate of two tons/acre. <br />[t is envisioned that the area pl ted to cropland will be planted with a cereal grain, most likely Winter Wheat, and <br />. will be planted at the rate of 6 pounds/acre. <br />e <br />The reclamation of th presently approved waste disposal site will be a continuing process and will be initiated once <br />the waste pile reach the prescribed elevation. <br />Due to uneven t ography, primary pile construction will begin in its southern portion until the whole pile is level. <br />Once the pile i level, construction will generally be from north to south. Lift thicknesses will be about 24 inches and <br />each lift will a compacted to 90 percent of the maximum density determined by T-99 procedures. Pile construction <br />specificatio s aze presented in Exhibit 21, Waste Disposal Site. <br />Once th~pile reaches its designed height, topsoil will be distributed over the area to a depth of 6 to 12 inches. <br />the pile reaches its designed height, a minimum of two (2) feet of non-toxic material will be used as cover on <br />ptle. Because the No. 9 Mine pit will be filled with waste material, the original fill material in the berm around <br />pit (approximately 185,000 cubic yards) will be used for the four (4) foot non-toxic cover on the present waste <br />. The remainder will be placed on the No. 9 Mine yard. Topsoil will be distributed over the area to a minimum <br />depth of six (6) inches. <br />After redistribution of topsoil, the topsoil will be analyzed and the necessary amendments will be added to maintain a <br />fertile plant growth media. The area will be returned to a land use of rangeland/ wildlife habitat. The <br />rangeland/wildlife seed mixture will be used. The mixture will be planted at a rate of 17.25 pounds/acre if a rangeland <br />drill is used. In the event the mixture is broadcast seeded, the seeding rate will be doubled. The area will then be <br />straw mulched with the mulch applied at the rate of two tons/acre. <br />Permit Renewal No. 3 2.05-28 7/15/98 <br />