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A 16 x 38 foot roofed shed addition was added to the south wall of the existing transfer building in October 2003. <br />This addition is supported by five 10-inch x 57-foot pilings driven to a depth of approximately 30 feet. The pilings <br />• are constructed with concrete caps supporting concrete piers. This building will be used to cover the rock belt and <br />includes awash-down water collection sump. <br />A propane heater system was installed on a 20 x 20 x 2 foot concrete pad adjacent to the existing transfer building <br />(northeast side) in October 2003. The heating system is used to heat the transfer building, adjacent sampling <br />building, and to replace the existing heating line to the portal. The heating system utilizes an internal 2-inch <br />polypropylene propane vapor line. The propane vapor feed-line running from the existing 18,000 gallon propane <br />tank on the surface is approximately 700 feet in length. The line is buried at a depth of approximately 4-feet, from <br />the existing propane tank to the new concrete pad location. The line is 2-inch, Schedule 40 steel and is supported <br />and anchored at the point where it goes over the highwall. The system also includes a vaporizer, a 6 x 6 x 6 foot <br />concrete pad at the tank location, and a regulator at the heater location. <br />To protect the #4 bent on the TCC stacker conveyor, a steel revetment approximately 25 x 25 x 55 feet was <br />constructed on concrete footers. A roof maybe added to the revetment to prevent accumulations of coal inside the <br />revetment. The concrete footers will be pushed to the base of the portal highwall and be buried during final <br />reclamation <br />Explosive Bunker <br />The explosive bunker is shown on Map 24, and encompasses an area of approximately 3 acres. The bunker was <br />constructed in 1975 and has been used since that time by Energy Fuels, and its successors. The site is a leveled, <br />graveled area, with three concrete explosive magazines in place to store blasting caps, delays and other sensitive <br />explosives. Also, tractor-trailers containing explosives were parked in the leveled portion of the explosives bunker <br />area. The leveled area can be used as a storage facility for materials that would not be precluded by safety <br />requirements. Drainage from the explosive bunker area collects in Sedimentation Pond T. This structure has been <br />designed to meet the performance standards of Subchapter K as described in Section 780.25. <br />Sedimentation Ponds <br />Twentymile Coal Company will be responsible for the maintenance and reclamation of Ponds B, C, D, E, F, G, and <br />T, originally pemutted by CYCC (Permit C-81-071,) and the 6-Main North Sedimentation Pond, constructed more <br />recently. <br />• <br />TR06-53 2.05-38 06/20/06 <br />