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5) Construction of a rock diversion chute and stacker belt. As <br />• mentioned above, this chute and stacker belt will be an addition <br />to the existing outside facilities located in the 5A yard. Rock <br />coming out of the 5A portal on the overland belt will be <br />diverted onto a short stacker belt and placed in a stockpile <br />before being hauled to the storage area along the highwall. <br />This stockpile will contain a maximum of 500 yd3 (20 ft. pile). <br />The entire belt and stockpile area is within the existing <br />sediment control system for the 5A yard, therefore no <br />modifications are needed to the existing system. <br /> 6) Portal heater installation - Due to the proximity of this work <br />. to the portals, intake air to this area will have to be heated <br /> during cold weather to prevent freezing of water lines and <br /> water/oil emulsion fluids. The heater will be natural gas or <br /> propane fired. It will be located near the 5A intake portal and <br /> will be ducted to both the intake and belt portals. It will be <br /> installed in accordance with all MSHA regulations pertaining to <br /> gas fired portal heaters. It is located within the limits of <br /> the existing sediment control system, therefore no modifications <br /> will be needed to the existing system. If natural gas is used, <br /> the local natural gas company, Greeley Gas, will be contracted <br /> to bring the natural gas supply line into the 5N yard area. <br /> Line installation will be done under their own rules and <br /> regulations. <br />• (REV. 4/29/86) <br />IV-50f <br />