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On completion of drilling and logging, all drillholes (except those to be completed as monitoring wells—WC013A
<br />and WC -008A) will be plugged and sealed in accordance with State Engineer requirements, and drill -sites will be
<br />reclaimed by removing all equipment and supplies, allowing any mud pits to dry -out, backfilling the pits, grading
<br />any disturbance to blend with the surrounding terrain and reestablish natural drainage patterns, replacing stockpiled
<br />soil materials, and seeding with either the rangeland or dryland pasture seed mixtures (dependent on the pre -
<br />disturbance vegetation community).
<br />Site Description:
<br />() Mine Facilities
<br />(a) A narrative and maps, to meet the standards prescribed in 2.10, describing the location,
<br />construction, modification, use, maintenance and removal of mine facilities in the permit area including all
<br />buildings, structures and utility corridors.
<br />RESPONSE
<br />The existing Foidel Creek Mine surface facilities consist of building structures, material handling system, utilities,
<br />and surface areas as shown on Map 24, Surface Facilities. Previously disturbed areas within the surface facilities
<br />area may be leveled and then utilized for additional storage.
<br />Buildin6s
<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 />A second administrative office was subsequently 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
<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. The office/bathhouse building is of concrete block construction and has dimensions of
<br />approximately 200 x 75 feet. Approximate height of the building is 15 feet. The building was placed on a
<br />reinforced spread -footer foundation and has a reinforced concrete slab floor. The bathhouse/office facility replaced
<br />the former bathhouse trailers, and was constructed adjacent to the operations center as indicated on Map 24
<br />Jn order to evaluate the evicting 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, 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. The existing water and sewer systems were found to be adequate and were utilized for the new facility.
<br />The former trailers were removed during the summer of 1993, with a portion of the resulting open area becoming
<br />part of the parking lot. Approximately 3,000 cubic yards of material was removed during excavation for the
<br />foundations and slab, and approximately 400 yards of compacted backfill material was used for the foundations and
<br />slab. in addition, some 850 tons of gravel was compacted beneath the foundations and slab. No other excavation work-
<br />is
<br />orkis planned. A 'limited amount of additional dult-,v'ork included contouring of the parking lot area where the current
<br />-till, ai;U f a:l,111' is iv: tau, wi d po,:,Wlit ,:i .cciu. Ji iii uv1.CoL, .6au a r uvii;c 1"i, ;AWUIU i;1t�
<br />become necessary in the area of the new bathhouse facility. Water and sewer lines from the trailers were capped and
<br />covered.
<br />In 1995, another temporary office trailer with dimensions of 24 x 66 x 12 feet was leveled and blocked south of the
<br />administration building. There were no water and sewer hook-ups, and a 40 -foot long buried conduit brought in
<br />TR13-83 2.05-17.4 11/17/14
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