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~~ .~ In September 1988, the initial long-term ash disposal site west of Johnson Gulch was reclaimed. The <br />" disposal site east of Johnson Gulch is still in use. The disposal site draining into Middle Pyeatt <br />drainage was approved in TR-58 (submitted November 1991). Map M47A shows the location of all <br />disposal sites. These sites are maintained in accordance wRh the disposal criteria stated earlier. <br />Derringer and Enfield Pits <br />Figures 4.3-25 and 4.3-26 show cross-sections for the cuts with the critical pft crest elevations in <br />Derringer and Enfield Pits. Utility wastes may be placed anywhere in the pits, including the pit floor, <br />so long as the wastes are at least ten feet above the criical pit crest elevation. <br />4.3.5 Postmine Land Use of Disposal Sties <br />Trapper Mine will not have a single waste disposal sde. Each pit can be considered a disposal site, <br />as waste products will be disposed of in nearly every cut. The amount of waste disposed in each cut <br />is relatively small. All waste will have at least five feet of cover plus topsoil. This depth is sufficient to <br />minimize the chance of any harmful material reaching the surface. These sties are, therefore, not <br />given special consideration for postminig land use (refer to Section 4.2). <br />.• <br />4-100 Revision: n,2-!ln(o <br />Approved: NOV 1 6 195}3 <br />