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These proposed facilities are discussed in more detail below. There will be no processing <br />activities on site: all the ore will be transported to the White Mesa Mill near Blanding, Utah <br />Proposed Expanded WRA -Denison proposes that the WRA be expanded north of the existing <br />WRA. The waste will be placed using top dumping and end dumping methods to create a bench <br />structure with maximum bench height of 70 feet. Waste rock slopes will be at the angle of repose <br />(approximately 1.5 Horizonala Vertical) during active mining operations. The WRA (with a <br />capacity of 250,000 tons of waste rock) has been designed to contain the maximum anticipated <br />volume of waste that may be brought out of the mine during operation. The expansion of the <br />WRA will increase the existing WRA from 3.7 acres to 6.1 acres of surface disturbance. The <br />current catchment berm will be moved, and expanded (as necessary), to the toe of the expanded <br />WRA. In addition, a catchment basin will be constructed at the northernmost point of the <br />expanded WRA to accommodate all stormwater runoff. Figure C-5 provides cross sections of the <br />existing, proposed, and post-reclamation surface of the WRA. <br />The rock hosting the ore body is the Salt Wash Member, which is sandstone; and therefore is not <br />likely to produce acid rock drainage (ARD). The blasted sandstone waste ranges in size from <br />fine-grained sand to about 2 feet in diameter. The material on the road surface of the WRA tends <br />to be finer grained as the rock readily breaks down under truck traffic. Existing reclaimed waste <br />rock piles at [he GMG mine, located east of the Sunday Mine Complex have shown that <br />vegetation will grow on the WRA in the area. Based on these field observations of the reclaimed <br />WRA's at the GMG mine and the fact that the waste rock originates from sandstone, it is evident <br />that the waste rock is not acid-generating nor does it contain mineral concentrations that are toxic <br />to vegetation. <br />Proposed Topsoil Stockpile Area -Very little topsoil was stockpiled from previous mining <br />operations at the Topaz Mine. A small topsoil stockpile currently exists at the mine. During the <br />expansion of the WRA, the upper 6 to 12 inches of growth media from the expanded area will be <br />stripped, combined with the existing topsoil stockpile, and moved to a location along the west <br />side of the expanded WRA. In addition, topsoil will be added to the existing earthen berm and it <br />will be moved from the tce of the existing WRA to the toe of the expanded WRA. <br />Most soil stripping will be performed using a tracked dozer, although afront-end loader and/or <br />motor grader may also be used. The stockpiles will be approximately 10 feet in height. To <br />minimize potential topsoil compaction, no equipment will be allowed to cross over the pile. The <br />topsoil pile location, shown on Figure C-4, will be protected from run-on by a berm at the top of <br />5-18-2007 Exhibit D Mining Plan D-7 <br />