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West Elk Mine <br /> surface shop building but has not yet been built. It will be utilized to perform maintenance on the <br /> larges surface equipment. As-built descriptions of the surface shop facilities are provided in Exhibit 68. <br /> Materials Storage Bench Building <br /> Construction of the Materials Storage Bench Building was completed in March 1996. The <br /> building is utilized to store materials that will be used in the mine. The 3,900 square foot <br /> building has six bays. The as-built description is provided in Exhibit 68. <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 stored <br /> within a separate covered containment area of approximately 1,840 square feet located between the <br /> bulk fuel area and the Maintenance Shop. These storage areas are enclosed by three walls and a <br /> roof to reduce the accumulation of precipitation within the concrete bunkers. The material stored in <br /> this area includes products,recyclables,and hazardous wastes. <br /> Petroleum products, as well as propane, are stored for ongoing operations and maintenance usage. <br /> Recyclables are collected and transported off-site and hazardous waste is also transported off-site. <br /> See the Spill Prevention, Control and Countermeasure Plan in Exhibit 8 for more detailed <br /> information regarding storage of these products. The bulk fuel storage area also includes a <br /> heated, enclosed storage bay for a total storage area of approximately 3,500 square feet. To the <br /> west 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. being <br /> stored prior to return to vendors. Dimensions of buildings and tanks are provided in 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 is <br /> contained in the shop building and receives water from wash down bays and the shop. An oil <br /> skimmer pipe allows the floating oils to be directed to oil/water separators below the shop and near <br /> the silos. The remaining water is drained to the mine site sediment ponds and/or is pumped and <br /> 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 rockdust <br /> bin has a capacity of approximately 142 tons. The compressor, distribution tank and controls are <br /> contained in a 416 square foot building at the base of the bulk storage bin. An as-built construction <br /> 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 as <br /> 1.05-18 Rev. 06105, 01106, 03106, 04106&05/06-PRIO;01/09-MR350; 04/09-TRIM;04/09-MR353;05/09-MR354;08/09-TR118, <br /> 08/09-TRI19;09/12-MR387;11/12-MR390;07/18-PR/5;11118-MR430 <br />