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• All topsoil stockpile will be appropriately marked with signs as discussed in <br />Section 4.02, Signs and Markers. As previously noted, stockpiles will be left in <br />a roughened condition to minimize potential wind and water erosion and if the <br />stockpile is going to be undistributed for over one (1) year it will be stabilized <br />by seeding. <br />4.06.4 REDISTRIBUTION <br />On the refuse pile, regraded areas will be ripped to a depth of approximately <br />two (2) feet to alleviate compaction and provide for effective root penetration, <br />prior to live handled or stockpiled topsoil reapplication. Upon completion of <br />ripping, EFCI will reapply four feet of non-segregated soil material from <br />stockpiles, or four feet of live handled soil materials consisting of subsoil and <br />topsoil placed according to test pit thicknesses. <br />The facilities and Ponds 3 and 4 areas will be ripped to a depth of <br />approximately two (2) feet to alleviate compaction and to provide for effective <br />• root penetration following completion of backfilling and grading activities. Upon <br />completion of ripping, six (6) inches of topsoil will be replaced in the facilities <br />and Ponds 3 and 4 areas. Replacement thicknesses in these areas are <br />consistent with removal thicknesses, reflecting loss or contamination of <br />available topsoil resources as a result of previous mining activities. <br />Topsoil will be replaced and graded using scrapers, trucks, wheel loaders and <br />tracked dozers, and motor graders. During topsoil replacement and grading <br />activities, mechanical manipulation of topsoil will be minimized to the extent <br />possible to prevent any unnecessary compaction. Where possible, topsoil will <br />be replaced along the contour and the surface will be left in a roughened <br />condition tin order to minimize erosion. <br />Differences in chemical and physical characteristics between A and B horizons <br />soils are negligible. Consequently, mixing of the two horizons will have very <br />little effect on biological, chemical or physical properties of the respread soil. <br /> <br />4.06-5 Revised 11!3/97 <br />Minor Revision No. 34 <br />