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West Elk Mine <br />Bulk Fuel, Barrel, and Hydraulic Component Storage Areas <br />MCC stores bulk petroleum products within a covered, concrete bunker capable of containing <br />approximately 31,000 gallons. Barrels containing petroleum products or waste materials are <br />stored within a separate covered containment area of approximately 1,840 square feet located <br />between the bulk fuel area and the Maintenance Shop. These storage areas are enclosed by three <br />walls and a roof to reduce the accumulation of precipitation within the concrete bunkers. The <br />material stored in this area includes products, recyclables, and hazardous wastes. <br />Petroleum products are stored for ongoing operations and maintenance usage. Recyclables are <br />collected and transported off -site and hazardous waste is also transported off -site. See the Spill <br />Prevention, Control and Countermeasure Plan in Exhibit 8 for more detailed information <br />regarding the fuel storage area containment. The bulk fuel storage area also includes a heated, <br />enclosed storage bay for a total storage area of approximately 3,500 square feet. To the west <br />of the heated, enclosed bay is the hydraulic components storage building. This 450 square <br />foot, steel structure provides containment and cover for hydraulic components, motors, etc. <br />being stored prior to return to vendors. An as -built construction description is provided in <br />Exhibit 68. <br />Oil Separation Skimming System <br />The oil separation system consists of an oil skimming pit and an oil skimmer. The skimming pit <br />is contained in the shop building and receives water from wash down bays and the shop. An oil <br />skimmer unit is installed in the skimmer pit and removes the bulk of the oil which may <br />accumulate on the water. The remaining water is tested for water quality compliance and drained <br />to the mine site sediment ponds and/or is pumped and hauled to an authorized disposal facility. <br />Bulk Rockdust Bin and Compressor Building <br />MCC utilizes a bulk rockdust storage and distribution system at West Elk Mine. The bulk <br />rockdust bin has a capacity of approximately 142 tons. The compressor, distribution tank and <br />controls are contained in a 416 square foot building at the base of the bulk storage bin. An as- <br />built construction description is provided in Exhibit 68. <br />Water Treatment Plant <br />A water treatment plant at the mine site provides potable water for the operation. The Culligan <br />Multi -Tech 48 water treatment system can treat water at the rate of 62 gpm. Thus, maximum <br />capacity is about 89,280 gallons of treated water per day. The water treatment plant is operated <br />as required by state regulations and under the jurisdiction of the Colorado Department of Public <br />Health and Environment (CDPHE). An as -built construction description of the building housing <br />this system is provided in Exhibit 68. MCC has the capability to expand the water treatment <br />plant, if needed. Capacity can be readily expanded by adding additional components should the <br />need ever arise due to increased needs at the mine. <br />I <br />j 2.05 -19 Rev. 06105, 01106, 03106, 04106 & 05106- PRIO: 01109- MR350: 04109 - 7R116; 04109 - MR353; 05109- MR354; 08109 - 7R118; <br />08109- TRI19 <br />