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Buildipas <br />The original mine administrative office, a 60 x 36 foot modular trailer structure, was modified to allow for the cold <br />weather and heavy snow-load of the area. That administrative structure contained eleven offices for the mine staff, <br />As the mine expanded, a new office(bathhouse complex was built to replace the modular trailers, as indicated on <br />Map 24, Surface Facilities. <br />In the interim, another administrative office was added For mine staff. The 36 x 56 foot trailer was located west of <br />the original administrative office. The trailer contained a bathroom and was hooked up to the existing septic and <br />water systems. Electrical power was supplied to the trailer by a transformer located on the east side of the trailer. <br />The location is shown on Map 24, Surface Facilities. In ]995, a temporary office trailer with dimensions of 24 x 66 <br />x 12 feet was leveled and blocked south of the administration building. There were no water and sewer hook-ups, <br />and a 40-foot long buried conduit brought in power from an existing transformer. The location is delineated on <br />Map 24. Bonding calculations addressing the temporary office trailer are presented on page 2.05-54(f)58. <br />Parking for the administrative staff and miners is located east of the bathhouses. In order to accommodate parking <br />requirement for mine employees and visitors, the layout of the parking area has been modified as shown on Map <br />24. As shown on the map, parking islands have been constructed to establish parking corridors and walkways in <br />the parking area. The parking islands have curbs made of railroad track and concrete light pedestals. Connections <br />from the light pedestals extend to elevated outlet boxes which provide cold-weather plug-ins in the parking area. <br />Three additional parking islands were permitted and constructed in 1495, as shown on iLtap 24. The new parking <br />islands are consistent in design with the existing islands. There are two parking islands per line of cars. Each <br />island is equipped with 8 electrical receptacles hung on a one-rail structure supported by an oblong railroad rail <br />base. Bonding calculations addressing the new parking islands are presented in Appendix A. <br />Drainage around the parking area was modified as per the details provided on Map 24. The ditch between the <br />current parking area and access road was filled and runoff will be directed into Ditches D-4 and G-4. The guazd shack <br />was converted into a storage building and it is located on the west end of the mobile equipment pazking/material storage <br />yard. <br />In 2005 the unpaved eastern portion of the existing parking lot (approximately 130 x 180 feet) and the mine ready-line <br />parking area west of the operations center, were leveled and regraded, with excavated material being used to fill-in and <br />bring low areas up to a consistent grade. Road-base material was subsequently brought in and compacted over the <br />regraded parking areas to establish a suitable base for paving operations. These azeas were then paved with <br />approximately 3-4 inches of asphalt paving material. The existing perimeter surface drainage systems were maintained <br />or reestablished during grading, base preparation, and paving operations. <br />In order to evaluate the existing septic system and {each 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 hack in the hole. Also, an eight-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 area becoming part of the <br />parking lot. Water and sewer Tines from these trailers were capped and covered. <br />Approximately 3,000 cubic yards 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 dirt work included contouring of the parking lot area 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 area <br />PR06-07 2.05-17.3 l 1127106 <br />