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In 1987, the two underground fuel storage tanks located by the office (Map M13) were replaced by one <br />15,000-gallon above-ground gasoline tank. The old tanks were removed and disposed of. In 1990, all <br />remaining underground storage tanks were replaced with aboveground tanks. <br /> <br />The aboveground tanks are not scheduled to be removed until the end of the coal contract. Additional fuel <br />tanks may be installed if fuel supply conditions warrant. <br /> <br />Explosives Storage Areas: <br /> <br />Explosive storage areas consist of four explosives magazines, four ammonium nitrate silos and a 10,000- <br />gallon above-ground emulsion tank. <br /> <br />The four explosive magazines are steel with wood lining. In 2002, the explosives magazines were <br />relocated from a site just off the B/C pit haulroad to a new site at the north end of Flintlock pit in 2005 they <br />were again moved to a site just south of the LOM and East A pit road intersection, (Map M-13a; refer to <br />MR-187). All detonators are stored in the 8’x8’x24’ magazine. Boosters and detonating cord are stored in <br />the 8’x8’x12’ magazine. All 3.5x6 bagged slurry products are contained in the large magazine (8’x8’x40’). <br />The remaining small magazine (8’x8’x7’) is normally empty, but can be used for additional storage when <br />necessary, such as when one of the other magazines becomes full or for new test products needing <br />separate storage. The 8x50-packaged emulsions may also be stored in semi-trailers in the magazine <br />area. The entire explosives magazine storage area is bermed. An additional magazine for 3.5X6 bagged <br />slurry products is planned for 2018. This magazine will be similar in size to the other large magazine with <br />approximate dimension of (8’X8’X40’) <br /> <br />The ammonium nitrate silos are built of steel. In 2002, ammonium nitrate silos #1 and #2, along with new <br />silo #4, were relocated from a site at the intersection of the D pit and B/C pit haulroads to a new site along <br />the life-of-mine haulroad near East Flintlock pit. A fourth silo also resides at this site for 200,000 pounds of <br />emulsion storage. The old 10,000-gallon aboveground emulsion tank was also relocated from the B/C Pit <br />area to the new site near East Flintlock Pit (MR-186). This emulsion tank is surrounded by an <br />impermeable earthen berm of sufficient size to contain the entire contents of the tank should a major <br />breach occur. Silo #3 is located in the old B/C pit area by the waste accumulation site. <br /> <br />These structures are not scheduled to be removed until the end of the coal contract, although the <br />ammonium nitrate silos may be moved as the pits progress. See Facilities maps (M13-A) for locations of <br />ammonium nitrate silos. <br /> <br />Parking and Storage Areas: <br /> <br />Trapper Mine currently has parking spaces for approximately 200 employee and visitor vehicles near the <br />office. These parking areas were surfaced with asphalt approximately September, 1976, and resurfaced <br />in 1991 and 2015. Equipment parking near the Shop/Warehouse is serviced by a start-up line with air and <br />electric outlets built approximately August, 1979. The outside storage yard contains culverts, fencing, <br />gravel, tires, and other parts and supplies not suitable for storage in the Warehouse. The drainage from <br />the parking lot flows into No-Name above the #5 Dam and the storage areas drain into the industrial waste <br />control facilities. <br /> <br />3-183