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7s <br />State Reg. <br />• <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 is estimated <br />that approximately 1.14 feet of highly suitable topsoil will <br />be replaced. <br />Federal Reg. <br />• <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 mediwn immediately <br />belay the topsoil will have desirable chemical and physical char- <br />acteristics for plant grauth including a loamy texture, lay <br />sodiisn 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 />N. TOPSOIL AAI~IDLING SCE~DULE <br />Topsoil removal and replacement has been estimated by calculating <br />an annual topsoil budget. The topsoil demand (graded acres times <br />topsoil replacenent depth) was calculated and con~ared to the top- <br />soil supply. If supply exceeded danand for a particular year, <br />topsoil was stockpiled. If demand was greater than supply, <br />materials ~+ere remved fran the stockpile. Table 9-9 shags <br />Nucla Cline'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 econanically desirable <br />and also maintains a high topsoil quality including direct trance <br />fer of viable seeds and roots, lao 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 /> <br />