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West Elk Mine deteriorates and must be treated prior to discharge to the North Fork. The pond is proposed to be • located in a meadow to the east of the existing Lone Pine Gulch Substation. The location of the pond is shown on Map 54A. Design information on the treatment pond is contained in Exhibit 66. Electrical Power An overhead 46KV high voltage transmission line from Colorado Highway 133 to the substation located in Sylvester Gulch was constructed in the Spring of 1997. Distribution power lines connect the substation to the two ventilation shafrs, the Sylvester Gulch F-Seam fan, the electric borehole, mine dewatering pump station and the existing main mine facilities. The substation located within the main mine facilities was abandoned in 1998, due to landslide movement, and is discussed in a later section of this permit. A 15 KV overhead line extends from a substation to the supplemental exhaust fan in Lone Pine Gulch. This electrical system meets the requirements of the National Electrical Safety Code, the National Electric Code (NEC), the National Fire Code, MSHA, and all applicable State or local codes. Grounding and ground fault-protection systems have been built into the electrical distribution system according to Federal mine safety regulations. Raptor protection systems have also been built into the electrical distribution system. Circuit breakers, lightning protectors, and ample switching points with the necessary transformers have been built into each substation. Branch lines that lead out to various loads are protected with breakers to prevent trip out of the main breaker and shutdown of the entire operation if a fault occurs on a branch line. The protective breakers on the • branch lines are coordinated with the exception that the mine fans aze to be connected to the main distribution line ahead of other breakers. Commursications A pager-type mine telephone system connects all working sections to the mine office. The system uses the same surface condors as the power distribution system where possible. It also has backup battery powered pagers. Materials Storage Areas Because the mine site is steeply sloped, benches have been or will be conswcted and several areas have been designated for the storage of materials and equipment. An access road loop will be constructed to create an approximately 3 2/3-acre storage bench located east of the office building employee parking lot. An approximately 1/3-acre bench, referred to as the surface laydown area, was constructed between sediment pond MB-1 and the fresh water pone. The upper and lower portal benches and the old Bear Mine site are also designated for the storage of materials and equipment. Other areas, including neaz the warehouse, maintenance shop, surface shop, materials storage bench building, water treatment plant and along mine site roadways, may also be utilized as needed for materials and equipment storage. • 2.~5-23 Revised ,VOV. 1996 PROi, Revised Feb. 1997 A1Rd09: Revised ,clay i99%,11RL6: Revised Jul. l99%TRBI: Reused Ocr.1998 TR86