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• The sequence of the backfilling operation in the disposal area will be as follows: <br />Place and compact the coal and non-coal waste in the disposal area. <br />Grade the bench material up and back over the disposal area to provide 4- <br />feet of non-toxic cover and to form AOC. <br />Place topsoil, seed and mulch. <br />The disposal area could extend the entire length of the coal pad, up to 700 feet. It has a <br />maximum capacity of approximately 12,700 cubic yards. The following material will be <br />placed in the disposal area: <br />Waste Source Cubic Yards <br />Coal Waste - To Be Moved to Disposal Area 2,000 <br />Coal Waste - Located in Disposal Area 1,900 <br />Rail Road Ballast 1,100 <br />Concrete (400 X 1.5 Swell) 600 <br />Pavement (100 X 1.5 Swell) 150 <br />Sediment from Pond (Max Allowed by Permit) 1,500 <br />Total Required Disposal Area Capacity 7,250 <br />• The disposal area has an excess capacity of about 5,450 cubic yards (12,700-7,250). If <br />the disposal area were completed filled, the contours of the reclaimed surface would <br />increase approximately one foot as compared to the original ground surface. This one <br />foot rise from AOC is not considered significant. <br />Approximately 5243 cubic yards of topsoil will be placed on the 10.9 acre regraded area <br />following operation of the loadout facility. Topsoil will be replaced to an average depth <br />of 3.57-inches. <br />Prior to topsoil replacement, the colluvial material will be graded to its approximate <br />original contour. During April and May 1994, the colluvial material was sampled and <br />analyzed to determine if it was suitable plant growth media. A total of sixteen test holes <br />were excavated to determine both the depth and quality of the colluvial material. The <br />location of the test holes is presented on the Facilities Map, Map 5. <br />The depth of each to the test holes is presented in Table 3, page 2.05-8c. The quality of <br />selected colluvial samples is presented in Table 4, page 2.05-8d. <br />. 2.05 - 8a <br />Rev. 6/15/98 <br />Permit Renewal 3 <br />/-IR-17 <br />