Laserfiche WebLink
In order to address customer concerns with excess coal fines generated during the coal loading, transport, and <br />unloading processes, TC proposes to modify the existing Stoker Coal Handling System to include a screening <br />stage prior to loading the coal for off-site transport. <br />The proposed modifications will involve; 1) Installing and modifying an existing building (crusher building <br />from the Williams Fork Mine) to serve as a Screening/Loading Building; 2) Removing the existing discharge <br />conveyor and loading chute from the Stoker Coal Stockpile and connecting a conveyor extension from the <br />Stoker Coal Stockpile to a the upper floor of a new Screening/Loadout Building; 3) Adding an out -of -spec coal <br />transfer conveyor from the Screening/Loadout Building to the existing Overland Conveyor to route the screen <br />over -size and under -size back to the coal product stream; 4) Constructing a 15 x 20 foot extension on the west <br />end of the current Washplant Building where the non -spec coal transfer conveyor will discharge to the existing <br />overland conveyor; 5) Relocating an existing sub -station west of the current Washplant; and 6) Realigning a <br />segment of Haulroad B-2 to route stoker coal haulage traffic under the new Screening/Loadout Building and <br />divert other traffic around the Building. All of the proposed modifications will occur within the existing <br />disturbance area, so there will be no new disturbance, and drainage from the affected areas will be handled by <br />the existing drainage and sediment control network. The proposed Stoker Coal Handling System modifications <br />are shown on Map 24 (Sheet 1 of 3) and by the design drawings provided in Exhibit 49K. <br />TC proposes to use a coal crushing/screening building moved from the Williams Fork Mine, and modify it with <br />the addition of double -deck screen (from TC's old Washplant) and a truck -loading system. The stoker coal <br />transfer conveyor extension will be an inclined elevated conveyor, approximately 200 -feet long and with a <br />maximum conveyor width of 48 -inches. The conveyor will be fully -enclosed within the tubular conveyor <br />gallery. The Screening/Loading Building will be supported by concrete piers (36 inches in diameter and <br />approximately 20 feet deep), with a reinforced concrete slab floor/loading ramp (approximately 40 feet wide x <br />60 feet long x 18 inches thick), and will be approximately 69 -feet high and 30 x 30 feet. The out -of -spec coal <br />transfer conveyor will be an elevated conveyor, approximately 112 -feet long and with a maximum conveyor <br />width of 48 -inches. Dependent on the results of site foundation evaluations, a reinforced -earth or concrete <br />retaining/barricade wall may be constructed between the Screening/Loading Building and the current road berm <br />adjacent to the Foidel Creek buffer zone. TC currently has a stream buffer zone variance for this area, which <br />remains applicable for the proposed installation. With the exception of the truck -loading point, all coal transfers <br />will occur within conveyor or building enclosures, and dust generated at the transfer points will be addressed by <br />a negative -pressure collection and wet -scrubber dust control system. Reclamation of the Stoker Coal Handling <br />System (as modified) will occur in conjunction with reclamation of the Washplant facilities, as described in the <br />approved reclamation plan. <br />TR18-89 2.05.32.1 02/20/18 <br />