2008-01-11_PERMIT FILE - C1982056A (2)

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in a stable configuration and stockpiled for use during reclamation of the road. In the event road drainage becomes an issue, small waterbazs aze constructed to divert flow from the road. The powerline to supply the pump station located at Pond A ties into the existing 4,160 V powerline as shown on Map 24, Surface Facilities. Existing access roads are utilized to access to the powerpole sites. Cuttings from the augured holes for the powerpoles were scattered around the sites to minimize disturbance. Powerpoles were placed on 500-800 foot centers. Power for the slope-belt drive building constructed in 1995 is provided by a buried 4,160 volt line running between the substation and the old transfer building. The line was not buried where it drops over the portal highwall. Substation Eaaansion The existing substation, located immediately above and to the north of the portal, was expanded to allow installation of a transformer, powerpoles and line, associated building, and fencing, The transformers and building aze enclosed by fencing. It is anticipated that four additional power poles will be installed at the site. Upon completion of mining activities, when the system is no longer required, the system will be removed. Voltase Reulators TCC uses three voltage regulators at the mine to increase the electrical efficiency of its power-distribution system. The regulators set on concrete pads and are enclosed within achain-link fence. The location of the regulators is shown on Map 24. ~ Capacitor Banks (MROl-174 S In order to assure the effectiveness of the power-delivery system to the mine YVEA installed and maintains two capacitor banks on TCC's property. The locations of the capacitor banks are shown on Map 24, Surface Facilities. The capacitor banks are owned by YVEA and will remain after mining as a component of YVEA'S power- distribution system. The footprint of the capacitor bank area is approximately 0.2 acres. Within this footprint approximately 12-18 inches of topsoil was salvaged prior to installation of the capacitor banks. The topsoil, approximately 485 CY's, was placed on Topsoil Stockpile SF-1. A segment of Colorado Yampa Coal Company's (CYCC) drainage channel PG 1-2 was relocated to accommodate construction of the capacitor bank pad. The channel was moved approximately 5 feet to the west of its current location. The channel was reconstructed consistent with the design approved in CYCC's permit number C-81-071. The pad was constructed using approximately 700 CY's of selected material from the clay salvage azea located at the refuse pile, supplemented by materials brought in from off-site. The capacitor banks were constructed on top of six 3-foot diameter piers, with an 18-inch x 5 foot concrete slab on top of the pierr. A battery cabinet within the pad azea was constructed on a footer approximately 6 x 3 x 1.5 foot. In addition to the battery cabinet, an additional 10 piers were poured to support various dead-end structures, switches, and fuse panels. The piers are typically 12 feet in depth and three feet in diameter. A security fence was constructed around the pad to limit access to authorized persons. The pad extends out from the fence to facilitate access into the Facility and minimize weed growth. The capacitors were placed and wired imp TCC's power system. The facility will remain after completion of mining. Borehole Pump Substation TCC installed the Borehole Pump Substation southwest of the PM Bay. It consists of four poles, a transformer, and related switchgeaz. The 50 x 50 foot azea is graveled and fenced with aten-foot high chain link fence. The substation ties into the overhead 69KV line. Bonding calculations addressing removal of the Borehole Pump Substation ace presented in.Appendix A, Volume IA. TR07-59 2.05-47 02/27/07