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(132 mg/L), total metals and radionuclides. This improvement in water quality is <br />attributed to the rehabilitation of the mine sump, which was nearly complete at the time <br />of sampling. The pH was elevated in the mine sump water due to shot-creting that was <br />conducted during rehabilitation of the mine sump. <br />Rehabilitation of the Whirlwind Mine sump was completed in early July 2008. <br />Rehabilitation included mucking out the accumulated sediment, stabilization of the sump, <br />and construction of a sump filter. Several feet of sediment was mucked out that had <br />accumulated in the sump during previous mining operations and while the mine was <br />inactive. Stabilization of the sump walls and roof consisted bolting on chain-link fencing <br />followed by shot-creting. The sump filter consists of two large culvert pipes, oriented <br />vertically with one standing inside the other. Holes were cut in the culverts and gravel <br />was placed between them. The mine pump sits inside the culverts, suspended from a <br />rolling chain hoist. In addition, a catwalk is located along the wall of the sump to provide <br />access to the sump filter and pump. The entire sump measures approximately 17 feet <br />wide by 46 feet long and ranges from 15 to 20 feet high. Total suspended solids in the <br />pumped mine water have decreased significantly since completion of the sump <br />rehabilitation. <br />Please let me know if you require any additional information at this time. <br />Sincerely, <br />Zach Rogers, EIT <br />Environmental Engineer <br />Attachment <br />Cc: Scott Gerwe, BLM <br />Bruce Smith, Western Water & Land <br />Jeff Osborn, Frank Filas, Bruce Norquist, Dick White (Energy Fuels) <br />Energy Fuels Resources Corporation 44 Union Boulez ird, Suitt; 600 <br />Lakewood, CO 80128 1''lione: 303-974-2140