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West Elk Mine <br />• Construction of a maintenance shop was completed in June 1993. The 15,000 square foot shop <br />consists of two levels. The ground floor includes six service bays, including a welding bay and a <br />wash bay. The second level mezzanine, located in the back half of the building includes offices, a <br />library, alunch-room, and a locker room. An as-built construction description is provided in <br />Exhibit 68. <br />In addition to the main warehouse, material storage is provided in the three-sided wazehouse. This <br />4,400 squaze foot, open-front building contains five bays for materials storage. In addition, MCC <br />plans to construct tire storage racks to the west of the warehouse building, adjacent to an existing <br />bin wall. The racks will be constructed of wood cribbing that will be open on all sides and covered <br />by light gage roofmg. As-built descriptions are provided in Exhibit 68. <br />The surface shop building is used for maintenance of surface equipment. The 4,130 square foot <br />building consists of two service bays, aline-up azea and a covered azea used for sand and gravel <br />storage. A dozer service facility is proposed to be located adjacent to the surface shop building. It <br />is utilized to perform maintenance on the lazge surface equipment. As-built descriptions of the <br />surface shop and a proposed description of the dozer service facility aze provided in Exhibit 68. <br />Construction of the Materials Storage Bench Building was completed in Mazch 1996. The <br />building is utilized to store materials that will be used in the mine. The 3,900 squaze foot <br />building has six bays. The as-built description is provided in Exhibit 68. <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 sepazate covered containment area of approximately 1,840 squaze feet located <br />between the bulk fuel area and the Maintenance Shop. These storage azeas aze 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 hazazdous wastes. <br />Petroleum products are stored for ongoing operations and maintenance usage. Recyclables <br />aze 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 azea also includes a heated, <br />enclosed storage bay for a total storage azea of approximately 3,500 squaze feet. To the west of <br />the heated, enclosed bay is the hydraulic components storage building. This 450 squaze <br />foot, steel structure provides containment and cover for hydraulic components, motors, etc. being <br />stored prior to return to vendors. An as-built construction description is provided in Exhibit 68. <br />MCC utilizes a bulk rockdust storage and distribution system at West Elk Mine. The bulls rockdust <br />bin has a capacity of approximately 142 tons. The compressor, distribution tank and controls aze <br />contained in a 416 squaze foot buildmg at the base of the bulk storage bin. An as-built construction <br />description is provided in Exhibit 68. <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 />2.05-/8 RevisedJwe 2005 PRIO <br />