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r~ ~J The D Portal area surface facilities, Map 15, include a building which was previously used as an Administration Building (now used for storage), the Mine Service Buildings which houses the administration, engineering, safety and operations personnel and the employee bathhouse-lunchroom building and the maintenance-warehouse shop building, In addition to these buildings are areas for parking and storage, the mine entrance portals and the coal handling, preparation and storage facilities. Sedimentation control is provided by two methods. First, as much as possible, runoff is prevented from entering the disturbed areas by the use of interceptor ditches that divert the runoff. Second, runoff from these areas is captured and held in sedimentation ponds. III.D Utilities III.D.i Electric Power Supply Electric power to the mine is provided by the Moon Lake Electric Association. Permanent power is supplied by tapping a 138,000-volt line in the SW1/4 of Section 7, T2N, R100W to a substation located near the D/B Portal Area. This substation, rated at 20 MVA transforms the power down to 13,800 volts for distribution to the various points of use at the mine. During October and November of 1986, Moon Lake Electric Association installed an additional three phase 480 volt power line from Conveyor Transfer Station 1 to the coal refuse areas. Raptor proof poles were placed approximately 300 feet apart located about fifty feet off the east edge of the refuse haul road. Power was needed for lighting at the refuse area to allow 24 hour operation. An 800' single phase 120 volt powerline was to extend off this line to serve a proposed air monitoring site across the haul road from Red Wash Reservoir No. 2. Colorado Air Pollution Control Division has waived such air monitoring requirements. Moon Lake used its standard equipment to drill holes, set the poles and hang the line. Equipment traveled across undisturbed ground. No surface preparation was performed since this would probably create more disturbance than the cross country travel of the installation equipment. Further, previously undisturbed areas that were compacted by overland vehicle travel were scarified to a depth of 6" and reseeded with the permanent seeding mix. In anticipation of possible future power requirements for the B-Seam ventilation area, approximately 3400 feet of overhead electric utility lines may be installed as shown on Map 151. Permit Renewal #3 (Rev, 8/99) III-34