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<br /> <br /> <br />1 <br />1 <br /> <br />1 <br />1 <br />1 <br />CI <br /> <br />1 <br />1 <br /> <br />1 <br />1 <br /> <br />1 <br /> <br />e mixture of surface soils that range from a very compacted dirt <br />to piles of material of unknown source or quality. It is assumed <br />that some material is available here. For planning purposes it <br />is calculated that about 50 percent of the area has a salvageable <br />soil depth of 6 inches with the other 50 percent having little or <br />no soil available that would be of much use in revegetation. <br />~onclasions and Salvage Recommendations. An area by <br />area analysis of available soils reveals that there is about <br />74,000 cubic yards (plus or minus 10 percent) of soil available. <br />Examination of the mining and reclamation maps shows an area of <br />about 636,500 (plus or minus 10 percent) square feet of land to <br />be reclaimed. About 62 percent of that area consists of slopes <br />and the remainder is relatively level. A choice must be made <br />as to where the available soil should be applied. The choice <br />is between placing 4 to 5 inches of soil over the entire <br />area or placing about 9 inches of soil on the slopes and using <br />other plant growth media on the bottom of the pit (the more level <br />areas). It is well known that difficulties in revegetation <br />increase with increasing slope according to almost an exponential <br />function (assuming aspect and other factors are kept constant). <br />It is also known that west- and south-facing slopes are more <br />difficult to revegetate than are east- and north-facing slopes. <br />None of the slopes are severely steep, but they do face primarily <br />west and south, with only some east- and north-facing slopes. <br />The operator proposes to place 8 to 10 inches of soil on the <br />slopes. If any soil is left over after placement on the slopes, <br />the soil will be spread on the pit bottom. In the event <br />34 <br />