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West Elk Mine <br />All equipment and facilities were placed on the existing surfaces with no concrete foundations <br />except for the two electrical transformers required for the facility. These required a single <br />reinforced concrete slab on grade approximately 8 feet wide by 12 feet long. This slab will <br />j also be removed when additional staffing is no longer required. <br />Potable water was supplied using a 10,000 gallon surface tank and pressure pump system. This <br />j tank was filled with potable water from WEM's existing potable water treatment and storage <br />system via truck haul to Sylvester Gulch. <br />Waste water from the facilities was stored in a plastic buried septic (closed) tank with an <br />approximate capacity of 10,000 gallons. This tank will be periodically pumped and the waste <br />water hauled to WEM's existing waste water treatment facility as needed. <br />Four modular bath/changing units and one modular office unit was placed at the site west of <br />Shaft #1 on the same level as shown on MCC drawing S52SGO05 and Map 54. Electrical <br />distribution panels for the facilities were housed in a skid - mounted steel enclosure. Water <br />supply equipment was housed in a second skid - mounted steel enclosure. Electrical service was <br />supplied via conductors within buried conduits. Potable water piping and waste water piping <br />was a combination of buried and surface piping. <br />Construction of the service infrastructure occurred in early May 2005. Completion of <br />construction and installation of the modular units occurred in late May 2005 when the modular <br />units were delivered. The facilities were completed the last week of May 2005 to meet MCC's <br />needs for housing additional construction and development staffing. <br />Electrical Power <br />An overhead 115KV high voltage transmission line supplies power to the substation located in <br />Sylvester Gulch. This feed line replaces the 46KV high voltage transmission line from Colorado <br />Highway 133 to the substation located in Sylvester Gulch that was established in 1997. <br />Distribution power lines connect the substation to the two ventilation shafts, the Sylvester Gulch F <br />Seam fan, the electric borehole, mine dewatering pump station and the existing main mine <br />facilities. The substation located within the main mine facilities was abandoned in 1998, due to <br />landslide movement, and is discussed in a later section of this permit. <br />This electrical system meets the requirements of the National Electrical Safety Code, the National <br />Electric Code (NEC), the National Fire Code, MSHA, and all applicable State or local codes. <br />Grounding and ground- fault - protection systems have been built into the electrical distribution <br />system according to Federal mine safety regulations. Raptor protection systems have also been <br />built into the electrical distribution system. Circuit breakers, lightning- protectors, and ample <br />switching points with the necessary transformers have been built into each substation. Branch - <br />lines that lead out to various loads are protected with breakers to prevent trip out of the main <br />breaker and shutdown of the entire operation if a fault occurs on a branch line. The protective <br />breakers on the branch lines are coordinated with the exception that the mine fans that are <br />connected to the main distribution line ahead of other breakers. <br />2.05 -23 Rev. 06105. 01106. 03106. 04106 & 05106- PRIG; 01109- MR350; 04109- TR116; 04109- MR353; 05109- MR354; 08109- TR118; <br />08109- TR119 <br />