Laserfiche WebLink
<br />to the North Fork of the Gunnison River. The pond will only be constructed in the future if the <br />mine water quality deteriorates and must be treated prior to discharge to the North Fork. The <br />pond is proposed to be located in a meadow to the east of the existing Lone Pine Gulch <br />Substation. The location of the pond is shown on Map 54A. Design information on the <br />treatment pond is contained in Exhibit 66. <br />An overhead 46KV high voltage transmission line from Colorado Highway 133 to the substation <br />located in Sylvester Gulch was constructed in the Spring of 1997. Distribution power lines <br />connect the substation to the two ventilation shafts, the Sylvester Gulch F-Seam fan, the electric <br />borehole, mine dewatering pump station and the existing main mine facilities. The substation <br />located within the main mine facilities was abandoned in 1998, due to landslide movement, and <br />is discussed in a later section of this permit. A 15 KV overhead line extends from a substation to.. , <br />the supplemental exhaust fan in Lone Pine Gulch. - <br />This electrical system meets the requirements of the National Electrical Safety Code, the <br />National Electric Code (NEC), the National Fire Code, MSHA, and all applicable State or local <br />codes. Grounding and ground fault-protection systems have been built into the electrical <br />distribution system according to Federal mine safety regulations. Raptor protection systems have <br />also been built into the electrical distribution system. Circuit breakers, lightning protectors, and <br />ample switching points with the necessary transformers have been built into each substation. <br />Branchlines that lead out to vazious loads aze protected with breakers to prevent trip out of the <br />main breaker and shutdown of the entire operation if a fault occurs on a branch line. The <br />protective breakers on the branch lines are coordinated with the exception that the mine fans are <br />to be connected to the main distributioq, line ahead of other breakers. <br />A pager-type mine telephone system connects all working sections to the mine office. The system <br />uses the same surface corridors as the power distribution system where possible. It also has <br />backup battery powered pagers. <br />Because the mine site is steeply sloped, benches have been or will be constructed and several <br />areas have been designated for the storage of materials and equipment. An access road loop will <br />be constructed to create an approximately 3 2/3-acre storage bench located east of the office <br />building employee parking lot. An approximately 1/3-acre bench, referred to as the surface <br />laydown area, was constructed between sediment pond MB-1 and the fresh water pone. The <br />upper and lower portal benches and the old Beaz Mine site aze also designated for the storage of <br />materials and equipment. Other areas, including near the warehouse, maintenance shop, surface <br />shop, materials storage bench building, water treatment plant and along mine site roadways, and <br />the surface of the Lower Refuse Pile may also be utilized as needed for materials and equipment <br />storage. <br />2.~5-L4 Revised Jan/996RN03; RevisedJun.1996MR/88;RevisedNav.J996PR07;Revrsedd1ay1997MR216 <br />2 ~ Revised Oci. 1997 TR83; Revised Jan. 1998 MR238; Revised Oc(. 1998 TR86; Revised May 1003 MR-294 <br />