2010-06-04_PERMIT FILE - C1982056A (9)

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positive drainage toward Ditch D -1, or was utilized as permanent fill in the relocation of County Road 27 as detailed in TR -19. Following construction, the materials will be seeded and stabilized in accordance with the • approved reclamation plan. In the event the materials are utilized as fill for CR 27, TCC will replace an equivalent volume of material at the Batch -Weigh Coal Stockpile during final reclamation. The replacement material will consist of spoil obtained during regrading operations in the area south of the existing portals and associated facilities at the Foidel Creek Mine. The volume of replacement material potentially required (maximum 13,500 cubic yards) will have no discernible impact on the final re- graded configuration proposed for the source area. Topsoil was removed from any new disturbance areas prior to construction of the batch weigh. system facilities. Topsoil salvage occurred in all areas where previously undisturbed soils existed. These areas included the slopes east of the Batch -Weigh Coal Stockpile (approximately 16 inches of Buckskin Loam, or 2,500 CY) and a small disturbance area in the Batch -Weigh Loadout building area. Topsoil was removed and placed in existing stockpiles (Stockpile SF- 6 on Map No. 29).in accordance with Rule 4.06. The stacking conveyor from the existing Tipple 2 Sampler Building to the Batch -Weigh Coal Stockpile stack -tube is 54 inches wide, 520 feet in length, and is constructed with three support bents. Two of the bents have two legs and one has four legs. Spread footings tied to concrete caissons are used as foundations for the bents. Trusses support the conveyor from the existing Sampler Building to the stack -tube situated above the reclaim tunnel. A headhouse mounted on top of the stacking tube houses the conveyor drive. A walkway runs along the side of the conveyor. The stack -tube is a concrete structure 14 feet in diameter and 115 feet tall with twenty -six 4 x 4 foot framed openings with hinged dust flaps. The stack -tube accommodates a coal stockpile with a 300 foot diameter footprint, approximately 100 feet tall, with a storage capacity of approximately 78,000 tons. By extending the pile in a southwesterly direction, coal storage capacity can be increased by approximately 82,000 tons, resulting in a maximum of 160,000 tons of coal storage at the batch -weigh site. • The stack -tube and coal stockpile set over a below -grade reclaim tunnel. Approximately 3,500 yards of excess material were excavated in construction of the reclaim tunnel. Excavated materials were spread adjacent to the site to provide a uniform surface and establish drainage from the site toward Ditch D -1. The tunnel is approximately 330 feet long, with a cross - section of approximately 10 x 13 feet. A sump is constructed at the low point of the tunnel and a float - controlled sump pump conveys any water that accumulates in the reclaim tunnel to Ditch D -1. An escape tube provides alternative access to the reclaim tunnel. The tube is approximately 150 feet long and is constructed of 48 -inch diameter CMP pipe. The escape tube is equipped with an exhaust fan and door. The reclaim conveyor carries coal from the reclaim tunnel to the Batch -Weigh Loadout building. The reclaim conveyor is 72 inches wide and approximately 700 feet long. Above grade, there is a walkway on the side of the conveyor. The reclaim conveyor is constructed similarly to the stacking conveyor, and is supported by three bents. Two of the bents are located south of the existing overland conveyor and one is located on the north side of the overland conveyor. Trusses support the reclaim conveyor structure between the overland conveyor and the Batch - Weigh Loadout building. The Batch -Weigh Loadout building is a steel- framed, metal - sheathed building set on sixteen 48 -inch diameter caissons extending to bedrock. The building straddles the railroad tracks approximately 250 feet east of the existing Tipple 2 stockpile and loadout. Dimensions of the building are approximately 28 x 40 x 111 feet. Drill -rig access to the site of the Batch -Weigh Loadout building for caisson installation was provided by either driving along the railroad tracks or utilizing the new access road east of the existing Tipple 2 coal stockpile (see Map 24). A crane setting at the base of the new access road to the site was utilized to facilitate construction of the Batch -Weigh Loadout building. The existing haul road (south of the construction site) and the newly constructed access road, were utilized as staging areas for construction materials and equipment for the Batch -Weigh Loadout building. vTcrdirons access to Yne i,trdho[h b1dI4mg 7s VUVA t&'ny efi<rer 'tire IWO dM%% - 3 -rzrdu' en'uy 1 4rtrnrg along the railroad tracks. A temporary concrete batch plant was erected on -site during construction of the batch -weigh system and associated facilities to provide flow -fill and concrete. Associated with the batch plant were small temporary TR06 -53 2.05 -37.1 05/03/06