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fhe 48-inch conveyor will discharge onto a radial stacker that will be either 36-inches, 42-inches, or 48-inches. <br />• The radial stacker will allow for coal to be routed either [o the low quality coal area or directly to the prep-plant <br />grizzly screen. <br />Temnorarv Belt from the Low Quality Coal Pile to the Pren- Plant <br />A temporary belt system is proposed from [he low quality coal pile to the prep-plant. A feeder will be set up in the <br />low quality pile with the capability to be moved as the material is utilized from the pile and fed through the prep- <br />plant. The maximum length of this conveyor will be approximately 800 feet. The structure will be a channel <br />frame type conveyor and will be mounted on the ground via floor stands se[ on cross ties without concrete <br />foundations. <br />ROM Stockpile Facilities Additions <br />Several upgrades are planned for the facilities around the ROM stack tube [o allow for more efficient handling of <br />coal. These upgrades include installation of anon-powered tripper on the coal belt between the transfer building <br />and the stack tube, extension of the ROM reclaim tunnel and installation of four additional feeders, and moving the <br />MCC No I . fan house/escape tube. <br />The proposed non-powered tripper on the coal belt between the transfer building and the stack tube will allow for <br />coal [o be dropped off the belt approximately 160 feet south of the stack tube. This will reduce the amount of <br />pushing required by dozers on the pile. The structural framework will be extended from the revetment at bent four <br />and a tripper arrangement installed on this framework. The system will be arranged with moveable chutework so <br />[hat the chutework could be moved into the coal stream coming off the tripper and discharge coal to either side of <br />• the revetment. The design of the chutework will result in an open type discharge similar to the BOB discharge. <br />Dismantling of this structure will occur concurrently with the rest of the coal belt structure. <br />The reclaim tunnel is planned to be extended 180 feet to the west which will reduce [he length of dozer pushes <br />away from the tube and back to a draw point The construction will be a multi-plate arch with a 180 toot long, 12 <br />foot wide arch approximately 8 feet high constructed of 8 gauge corrugated metal plate. The liner will be <br />supported by a concrete footer that will extend 180 feet to the west of the existing tunnel on both sides of the <br />overland bell The footers will be 4 feet wide and 2 feet thick with a 12 inch stem wall extending 3 feet upward <br />from the footer. As part of this extension, one additional feeder will be installed within the multi-plate arch. <br />Three additional feeders are planned [o be installed in the ROM reclaim tunnel. These feeders will be located in <br />[he legs of the "H" vault area, specifically [he northeast, southeast, and southwest legs. The installation of the <br />feeders in the tunnel will involve connecting the feeders to existing draw point chute work and modifying the <br />skirtboard hoods to accept the discharge of these feeders . The concrete associated with the tunnel will be broken <br />up and buried on-site and the steel will be either salvaged or disposed on-site when this facilit}• is no longer <br />required. <br />The MCC No. I fan house/escape tube buildings will be moved approximately 200 feet to the north to allow for <br />coal storage in the pad area south of Haulroad B. Technical Revision 18 addressed the necessary grading for <br />expansion of the stockpile to the north. The pad area is currently permitted for coal storage but is being used for <br />temporary equipment storage. Map 24 has been revised to show this area as both ROM coal stockpile and <br />equipment material storage. These buildings will be removed when the ROM facilities are dismantled. <br />• <br />MR 97- I ~4 2.05-60 Revised 9/9/97 <br />