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• area with 1.3 feet of suitable soil. The eve ra 9e thickness of replaced soil is likely to <br />exceed 1.3 feet es the stockpiled soil swells during redistribution (BSCC, 1993). The <br />average [hitkness of replaced soil in the tie-across haul road corridor will be 0.7 feet <br />(69.7 acre-feet/96.6 acres). <br />Summary. The soil replacement thickness for the first five-year permit term was <br />projected to be 1.3 feet (PAP C-82-057, Tab 21, Minesoil Reconstruction). The balance <br />completed above shows 1.3 feet of soil will be available to be replaced. Peabody will <br />continue to salvage, store and replace soil as described end approved in PAP C-B2-057. <br />Peabody's soil scientist and reclamation supervisor will continue to closely monitor soil <br />salvage activities at Seneca II-Y Hine verifying that scraper operators are salvaging ell <br />suitable soil materiels and replacing soil at the specified thickness. <br />Revegetetion <br />Temporary revegetetion was completed on cut and fill slopes and soil Stockpile Sites PP, <br />OD, RR, and SS along Xaul Road G and soil Stockpile Sites HH end II in the upper mine <br />block at the Seneca II-Y Mine. The cut end fill slopes and stockpile sites were cover <br />. cropped with winter wheat et a rate of 20 pounds per acre. Most areas were drill seeded; <br />however, steeper slopes were broadcast seeded. Seed Mix No. 1 for upland sites was used. <br />The 1992 reclamation block shown on Exhibit 92.2 was also cover cropped with winter wheat <br />at a rate of 20 pounds per acre. <br />There were no permanent revegetetion or straw mulching operations conducted et the Seneca <br />11-Y mine in 1992. <br />Revegetetion monitoring was not conducted et the Seneca II-Y mine in 1992. <br />Survey or control of noxious weeds was tarried out in the following areas during the 1992 <br />field season. Because of the extensive nature of the 1992 weed control activities and the <br />occurrence of numerous scattered spot control areas, specific sites which were sprayed ere <br />not shown. Control activities were used along the mine entrance road, near Pond 006, <br />along Heul Road A between Pond 006 and Topsoil Stockpile I, and the shop area. Canada <br />thistle (Cirsium arvense) wee [he target species in control areas. The applied herbicide <br />consisted of a tank mix of 2.5 gallons of 22K Tordon end 2.5 gallons of 2, 4-D amine with <br />• 250 gallons of wets r. A spot spray gun was used to concentrate control activities on <br />target areas. The herbicide mix, based on Colorado State Extension Service <br />8 <br />