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additional conveyor was also installed to handle the waste rock generated by the mining process. A metal slope <br />belt-drive building with dimensions of 32 x 40 x 20 feet, located north of the existing transfer building, was <br />constructed in 1995, and provides electrical and mechanical support for conveyor system. Bonding calculations <br />addressing removal of the new slope belt-drive building are presented in Volume 1-A. <br />TCC's upgraded coal handling facilities provide the mine with the flexibility to convey coal at varying rates <br />depending on demand. Uniform construction practices utilized in the facility upgrades include driving/installing <br />caissons and building grade beams and footers to provide an adequate foundation for new or modified structures. <br />The individual design requirements for the various structures dictate the type of foundation required. The facilities <br />are shown on Map 24. During the upgrade, the width of the slope conveyor belt was increased to accommodate the <br />higher tonnage. All belts and systems aze sized to efficiently convey the increased tonnage. The existing transfer <br />building is used to support the slope-belt. <br />The new transfer building is located south of the existing transfer building. In this building, coal is transferred from <br />the slope-belt to the stacker tube feed-belt, or waste rock is transferred from the slope-belt to the waste rock <br />conveyor belt. The location of the belt has been modified to facilitate operations azound the storage building. The <br />new location, as shown on Map 24, Surface Facilities, required excavating approximately 11,000 CY of spoil and <br />rerouting Ditch D-4 around the stockpile. The excavated material was either placed in the reclaim tunnel <br />excavation or in the waste rock disposal area. The excavated spoil was sloped to 1H:1V or steeper depending on <br />field conditions. If field conditions require, a safety bench will be constructed in the cut slope. Removal of this <br />material will not impact the reclamation plan. <br />During construction of the coal stockpile pad and haulroad, a minor amount of cut and fill work was required. The <br />northwestern edge of the pad and the haulroad required approximately 20,000 CY of fill. Approximately 6,000 CY <br />of fill was required for the remainder of the azea to get the pad to grade. During site preparation, some of the <br />existing fill was removed from this azea. Estimates indicate approximately 15,000 CY of material was removed, <br />relative to the existing configuration at the time. Of this volume, approximately 12,000 CY was not suitable for <br />construction proposes and was placed in the waste rock disposal site. Required fill material was borrowed from the <br />spoil adjacent to the TCC portal area. The borrow azea is shown on Map 24. The borrow area was graded level, <br />and thus will provide additional storage area. The sideslopes of the borrow area were regraded to 2H:1 V. <br />Construction of the reclaim tonne] and laterals required excavating trenches and then constructing the tunnel within <br />the trenches. The forme] and laterals are constructed of concrete and/or steel. An exhaust/escape tunnel extends <br />from the reclaim tunnel. The excavated dirt was used in constructing the stockpile base. A concrete wall was <br />constructed where the overland belt exits the reclaim tonne[. Approximately 100 CY of material was removed from <br />the borrow area and used as bedding and packing for Culverts D-2-C and D-2-F. <br />Coal transferred from the stacker tube feed-belt to the stacker tube is stockpiled around the stacker tube. As shown <br />on Map 24, a portion of existing Haulroad B (see CYCC Permit C-81-071), was covered up by the coal stockpile <br />and reclaim tunnel. This required that the haulroad be routed around the north and west sides of the coal stockpile. <br />The haulroad profile and typical cross-section aze provided on Map 30A. The stockpiled coal sits over the reclaim <br />tunnel and is typically fed by gravity to the overland belt by vibratory feeders. As the stockpile increases in size, <br />however, the coal is dozed into the live cone area of the stockpile to facilitate gravity feed to the feeders. Feeders <br />located in the reclaim tunnel feed coal onto the overland belt from the raw coal stockpile. <br />A control building (MCC-1) is constructed adjacent to the reclaim tunnel exhaust fan. This building houses the <br />instrumentation necessary for the reclaim system. The building is approximately 8 x 10 x 10 feet and is constructed <br />on a 6-inch concrete pad and 4 x 10 foot stem wall. The location of the building is shown on Map 24. When the <br />building is no longer required, it will be removed. <br />Overland Conveyor {Modified and Superceded by TR07 59 for Washolant IIl <br />The 48-inch overland belt was constructed during 1989 to convey coal from the reclaim tunnel at the ROM Coal <br />Stockpile to the Crusher Building at Tipple 2. Alternatively, if trucks aze used for wal haulage, the coal can be <br />TR07-59 2.05-27 <br />02/27/07 <br />