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the trailer. The location is shown on Map 24, Surface Facilities. In 1995, a temporary office trailer with <br />dimensions of 24 x 66 x 12 feet was leveled and blocked south of the administration building. There were no water <br />and sewer hook-ups, and a 40-foot long buried conduit brought in power from an existing transformer. The <br />location is delineated on Map 24. Bonding calculations addressing the temporary office trailer are presented on <br />page 2.05-54(f)58. <br />Parking for the administrative staff and miners is located east of the bathhouses. In order to accommodate the <br />parking requirement of the mine's employees, the layout of the parking area has been modified as shown on Map <br />24. As shown on the map, parking islands will be constructed throughout the pazking area. The islands will have <br />crabs made out of railroad track and concrete pedestal structures. The pedestals will have outlet boxes for <br />providing electric service in the pazking area. The pedestals will have a concrete base (approximately 1 cubic foot) <br />and the electrical service extending upward from the base. Also, it is anticipated that either one or two lights will <br />be placed in each island. <br />Three additional parking islands were permitted in 1995 and are shown on Map 24. The new parking islands are <br />consistent in design with the existing islands. There aze two parking islands per line of cars. Each island is <br />equipped with 8 electrical receptacles hung on a one-rail structure supported by an oblong railroad rail base. <br />Bonding calculations addressing the new pazking islands aze presented in Appendix A. <br />The drainage azound the pazking area was modified as per the details provided on Map 24. The ditch between the <br />current parking azea and access road was filled and runoff will be directed into Ditches D~ and G-4. The guard shack <br />was converted into a storage building and it is located on [he west end of the mobile equipment pazking/material storage <br />yazd. <br />In order to evaluate the existing septic system and leach field for future expansion at the mine a percolation test was <br />conducted. Approximately six, 4-inch diameter holes, 30-48 inches deep were augured for the percolation test. <br />• After the test was completed, the cuttings were placed back in the hole. Also, aneight-foot deep backhoe pit was <br />dug so a soil profile could be obtained. After the backhoe pit was logged it was backfilled. It should be noted that <br />the activity as shown on Map 24, Surface Facilities, would be within the boundary of the existing sediment control <br />system. <br />The bathhouse/office facility replaced the former bathhouse trailers, and was constructed adjacent to the operations <br />center as indicated on Map 24. The existing water and sewer systems were utilized for the new facility. The former <br />trailers were removed during the summer of 1993, with a portion of the resulting open azea becoming part of the <br />parking lot. Water and sewer lines from these trailers were capped and covered. <br />Approximately 3,000 cubic yazds of material was removed during excavation for the foundations and slab, and <br />approximately 400 yards of compacted backfill material was used for the foundations and slab. in addition, some 850 <br />tons of gravel was compacted beneath the foundations and slab. No other excavation work is planned. A limited <br />amount of additional dirtwork included contouring of the pazking lot azea where the current administration trailer and <br />parking is located, and a possible widening of the access road by some 25 feet, should this become necessary in the azea <br />of the new bathhouse facility. The pazking azea was surfaced originally with tar-sand material, but this material has <br />been overlaid with asphalt, and drainage will be conveyed via the existing system. <br />The original building is of concrete block construction and has dimensions of approximately 200 x 75 feet. <br />Approximate height of the building is 15 feet. The building was placed on a reinforced spread-footer foundation <br />and has a reinforced concrete slab floor. In 2003, under MROI-173, aten-foot expansion to the south was <br />constructed for the bathhouse area only, providing an additional 1,000 square feet of locker room for the workforce. <br />The extension design and structure matched the existing building. The extension required construction of piers, <br />• footings and walls and a concrete slab. The extension itself is constructed with wood framing, insulation, and metal <br />exterior sheathing and roof. <br />MROS-195 2.05-17.3 8/24/05 <br />