2014-06-09_PERMIT FILE - C1981038 (2)

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2.05 APPLICATION FOR PERMIT FOR SURFACE OR MINIMUM REQUIREMENTS FOR OPERATION AND MINING ACTIVITIES - PLANS. EAST MINE FACILITIES The following description of mine facilities begins at the uppermost bench and moves down through the facility to the train loadout as if following the flow of the coal. Refer to Map 8-1 for former location of all buildings. At the uppermost bench (elevation of 7,421 feet), there are two thirty-foot diameter, 290-foot deep air shafts. They were constructed in 1976-77 using conventional drilling and blasting techniques. The west shaft provided fresh intake air. The air was exhausted through two axial vane fans constructed on the east shaft. Due to the June 1, 1986, mine fire, these intake and exhaust shafts were sealed. The existing fans were removed. (See Section 2.05.4(2)(gJ for information on abandonment of the shafts.) Also located on this bench are a 300,000 gallon and a 100,000 gallon water storage tanks. They were constructed using a conventional welded steel plate technique and are atop a reinforced concrete foundation mat. They provided water for fire fighting, underground water needs, shower, sanitary, and domestic needs of the office, shop, and warehouse facilities.. A water supply pipeline has been constructed to connect these tanks with the Steven's Gulch well field. The pipeline is constructed using 9" diameter pipe. A buried 7.2 KV power line parallels the pipeline. Overhead support structures carry the line to the tanks at the fan level. These tanks, pipeline and power supply remain in place. This is a portion of the Pitkin Mesa Pipeline system. The well field is powered by the buried cable. This system will not be reclaimed until alternate arrangements can be made for the Pitkin Mesa Pipleline and the power supply of the Stevens Gulch well field. Two mine access portals were constructed at an elevation of 7,170 feet, on the portal level. They utilize corrugated steel tunnel liners and concrete structures. These portals were backfilled during 2001. The east portal bench level, elevation 7,170 feet, were used exclusively for labor, equipment and material ingress and egress and for the conveyance of coal. Both portals were sealed after the 1986 mine fire but were xe-opened to establish the North Mains by-pass in 1993. The portal bench itself remains with concrete building foundations and access to the sealed mine portals. A rock dust storage bin was also located at this level. The rock dust storage bin was relocated to another associated mine in early 1998. A storage tank containing a magnesium chloride solution was located adjacent to the main access portal. This storage tank was removed in 2000. Permit Renewal RN-o4 (4~ry~ay~ /71R -i a6 - 11 - 01/03