Laserfiche WebLink
Section - 2.05.3 <br />]. Rock Dust and Explosive Storage -Once active mining operations in the Sanborn Creek <br />Mine cease, the existing rock dust storage bins will be relocated to the Elk Creek Mine <br />portal bench. The bins will be connected to the Elk Creek Mine workings by either a <br />borehole or a pneumatic feed line through one of the ventilation shafrs, allowing rock dust <br />to be transferred directly to an underground loading point. The existing portable explosive <br />magazines will be located in a suitable azea, well away fzom active operating aeeas, in full <br />compliance with applicable regulations of the Bureau of Alcohol, Tobacco, and Firearms. <br />K. Elk Creek Mine Overland Conveyor - An overland conveyor will be constmcted to <br />transport coal from the Elk Creek Mine portals to the top of Stacking Tube No. 1 in the <br />Elk Creek facilities azea. The Elk Creek conveyor will include an underground section <br />extending from the D Seam intercept to the mine portals; a surface section, constructed on <br />grade and a elevated section, tying into the existing headhouse on top of Stacking Tube <br />No. 1. A transfer point will allow coal refuse or mine development waste to be diverted <br />through a dischazge chute to a temporary stockpile. As material accumulates in this pile it <br />will be loaded and hauled to the West Valley fill disposal azea. The conveyor will have a <br />capacity consistent with the maximum annual production rate of 4,800,000 tons annually. <br />The conveyor design includes partial coves for dust control, walkways for inspection and <br />maintenance, and emergency stop controls in compliance with applicable MSH,S safety <br />regulations. <br />L. North Elk Creek Soil Stockpile -The existing Elk Creek soil stockpile will have to be <br />moved to accommodate construction of the new Sedimentation Pond D. Soil materials <br />from this existing stockpile will be placed, along with all soil recovered from the Elk Creek <br />Mine surface facilities dismrbance area, in a new soil stockpile constructed on the east side <br />of Elk Creek, neaz the northern limit of the new mine disturbance azea. Projected stockpile <br />• capacity is approximately 65,200 (18,600 cy from existing stockpile, 46,600 cY soil salvage <br />from Elk Creek Mine disturbance areas) cubic yazds and will be verified by survey <br />following completion of soil relocation stockpiling activities. Compliance with applicable <br />design and stability requirements is addressed by the Slope Stability Analysis for Elk Creek <br />Mine Portal Bench Fills and SoIl Stockpile (Montgomery Watson, 2000). Additional details <br />on soil material handling and storage aze provided in Section 2.05.3(5), <br />M. Petroleum Storage Facility/ Washbay Facility - A combination petroleum storage facility/ <br />washbay facility is located south of the Elk Creek portals. The facility is a combination <br />cinder block wall construction on a concrete foundation. It houses bulk fuel, oil and <br />emulsion tanks and drum, tote and pail lubricant storage. The washbay includes a steam <br />cleaner, sediment sump and a oil water sepazator system. <br />N. Sump Water Injection Borehole - A sump water injection borehole is located northeast of <br />the upper Elk Creek facilities pad azea. The borehole facilitates the transfer of water from <br />the D seam water collection sump to the old C seam (Somerset mine) workings. The <br />borehole consists of a 6'/e" borehole with a steel 4'/z" casing set approximately 450' to the <br />underlying C seam workings. <br />• <br />TR-49 2.05-23a Revised January 2005 <br />