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78 <br /> State Reg. Federal Reg. <br /> that will require topsoil replacement is 111.77 acres. By di- <br /> viding the number of acre-feet--available topsoil (127.27) by <br /> the number of acres to be disturbed (111.77) , it 's estimated <br /> that appro tely 1.14 feet of highly suitable soil will <br /> be repladQ., ----� <br /> This topsoil replacement depth will be beneficial to establish- <br /> ing a good seedbed and rooting medium. The anticipated sandy <br /> clay loam texture will have favorable infiltration and water <br /> holding characteristics. Also, the spoil medium immediately <br /> below the topsoil will have desirable chemical and physical char- <br /> acteristics for plant growth including a loamy texture, low <br /> sodium absorption ratio and electrical conductivity, medium sat- <br /> uration percentage for favorable water holding characteristics, <br /> and no minor element toxicity problems (see Tab 6 - Geologic <br /> Information, Overburden Assessment) . <br /> IV. TOPSOIL HANDLING SCHEDULE <br /> Topsoil removal and replacement has been estimated by calculating <br /> an annual topsoil budget. The topsoil demand (graded acres times <br /> topsoil replacement depth) was calculated and compared to the top- <br /> soil supply. If supply exceeded demand for a particular year, <br /> topsoil was stockpiled. If demand was greater than supply, <br /> materials were removed fran the stockpile. Table 9-4 shows <br /> Nuc1a Mine's anticipated topsoil handling schedule. <br /> The topsoil salvage and distribution operation will maximize <br /> take and put methods whenever feasible throughout the life of <br /> the permit (Table 9-4) . This technique is economically desirable <br /> and also maintains a high topsoil quality including direct trans- <br /> fer of viable seeds and roots, low compaction, better structure <br /> and high nutrient status. Spoil piles are expected to be graded <br /> and topsoiled within one (1) year (generally represents three to <br />