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I• <br />r~ <br />ICJ <br />Area in Fill: 15202124.61 sq ft, 348.993 acres <br />Total inclusion-area: 15208906.95159 3q ft, 349.15 acres <br />Cut to Fill ratio: 0.00 <br />Average Cut Depth: 3.74 Average Fill Depth: 77.70 <br />Cut (C.Y.) /Area (acres): 2.69 <br />Fill (C.Y.) /Area (acres): 125305.50 <br />Cut volume is 25342.26 cubic ft, 938.60 cubic yards <br />Fill volume is 1 1 81 255961.03 cubic ft, or43.750.220 cubic vards <br />The coal volume is calculated as the approximateamendmentdlsturbed area x 6.0 feet. This is 349 <br />acres x 6.0 feet = 353,800 cy. <br />Therefore, the existing volume of OB/Soil is 43,750,220 cy - 353,800 cy X13.396.420 cv. <br />Volume of Existing OB/Soil Stockpiles <br />The existing topsoil and overburden piles are shown on the Life of Mine Operation Plan Map 2.05.3- <br />1.The volumes below were calculated by the stockpile volume routine in Survcadd: <br />Main OB Stockpile south of mine office: 318,400 cy <br />4 topsoil stockpiles (3,500 cy + 72,800 cy + 5,100 cy + 32,200 cy) = 113,600 cy. <br />Combined OB + Topsoil Stockpile volume =432.000 cv. <br />Slot Cut Volume of Material <br />It is necessary to subtract this volume from the total existing OB since part of the OB in the <br />amendment area will need to backfill the last cut in the original mine area.This volume is calculated <br />as 613,090 sq. ft. (14.07 acres) x 100 ftdepth =2.800,000 cv. <br />• (REVISED 9/99) 2.05.4(2)(C) - 5 <br />