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Prior to disposing of any rock in the desig- <br /> nated area, the ground was first cleared of vegetation with <br /> bulldozers and the topsoil salvaged and stockpiled in accordance <br /> with applicable regulations . The salvaged topsoil and B Horizon <br /> material has been stockpiled and revegetated with the 8, 000 foot <br /> elevation seed mix. Initially, 8 to 12 inches of topsoil will be <br /> placed on the final rough-graded- surface. See Appendix II-B-5 <br /> and Exhibit II-B-4 for maps and cross-sections of the rock-spoil <br /> disposal area. The appropriate seed mix for revegetating the <br /> rock-spoil disposal area will be determined and approved by the <br /> Mined Land Reclamation Division at the completion of the tunnel <br /> excavation. Straw will be used as a mulch and applied at a rate <br /> ,of 3 , 000 to 4 , 000 pounds per acre. <br /> (6) Mitigation of environmental impacts <br /> During the life of mining operations in Coal <br /> Basin, the company will pursue an active program in the rock <br /> tunnel portal disturbed area to mitigate- environmental impacts to <br /> the extent possible. Reclamation of those disturbed areas where <br /> activities are no longer required once the tunnel is in operation <br /> will be accomplished during operations as indicated in Table II- <br /> B-1 . Following the cessation of the mining operations the rock <br /> tunnel portal area will be reclaimed as outlined in Chapter v, <br /> Reclamation Plan. As part of the sediment control plan in the <br /> rock tunnel portal area, the Company has initiated an intensive <br /> revegetation program for the disturbed steep and inaccessible <br /> slopes created by the tunnel construction. <br />