2009-05-22_PERMIT FILE - C1981044A (6)

Home Browse Search

48-inch Overland Conveyor - The 48-inch Overland Conveyor was constructed in 1985 to allow coal to be transported from the No. 5A Portals to the coal handling facility. The main obstacles in constructing the Overland Conveyor were; 1) Gaining permission from the CMLRD to come within 100 feet of a stream (namely, the Williams Fork River); and 2) Gaining approval from the State Highway Department to cross State Highway 13. Since no environmental harm would come to the Williams Fork River, the CMLRD approved construction of the Overland Conveyor in 1985; and the Highway Department approved construction across State Highway 13 in the same year. Documentation of State Highway approval is presented in Exhibit 19, Overland Conveyor Highway Crossing Approval. The Overland Conveyor is covered for dust control and has been included in the RAG EC Air Emission Permit. A copy of the Air Emission Permit from the Colorado State Department of Health is included in Exhibit 2, Other Required Permits. The 48-inch Overland Conveyor terminates at the coal Stacking Tube. Stacking Tube - The Stacking Tube is approximately 85 feet in height and 12 feet in diameter. Coal passes through the Stacking Tube to the 100,000 ton Raw Coal Stockpile. Primary Raw Coal Stockpile - The coal stockpile is designed to accommodate over 210,000 tons of run-of mine coal. The basal area of the stockpile storage area is approximately 210,000 square feet. The stockpile was constructed on a previously disturbed area, and as such, no topsoil was salvaged. Typically, approximately 60,000 tons of coal will be stored in the stockpile. The maximum capacity will be used only at times when coal production exceeds delivery schedules. Usually, this will occur when the longwall system is being moved to begin another longwall panel, or trains are delayed. The CDOH air emission permit will dictate the maximum tonnage in the coal pile and DMG approved footprint. 30,000 Ton Raw Coal Stockpile - The coal stockpile was designed to accommodate 30,000 tons of run-of-mined coal. It was located in the No. 9 Mine portal area. This coal was trucked from the primary Raw Coal Stockpile or 5A Portals. This is low-quality coal, which was stored prior to blending, when conditions allowed. Reclaim Tunnel and 42-Inch Conveyor - A reclaim tunnel is located beneath the coal stockpile and the associated conveyor is used to transport the coal from the coal stockpile to the Screening and Sizing Building. Screening and Sizing Building - The Screening and Sizing Building is used to screen and size the coal. Included in the building are screens, a rotary breaker, and associated conveyor belts. In the Screening and Sizing Building, coarse reject is separated from the coal and then hauled by truck to the waste disposal site. Screened and sized coal is then transferred to the 36-inch Overland Conveyor. 36-inch Overland Conveyor - The 36-inch overland conveyor transports the coal to the sample building. Coal samples are taken at the sample building for quality control. Raw Coal Storage Conveyor - The Raw Coal Storage Conveyor is an inclined conveyor, which transports the coal to the 10,000 ton Storage Silo from the sample building. 10,000 Ton Storage Silo - The 10,000 ton Storage Silo is used to feed coal to unit trains. The unit-trains then haul the coal to market. Due to the fact that the Storage Silo is a very important part of the coal handling operation, and that underground mining had been conducted immediately beneath the storage silo area, a stability analysis was conducted for the Storage Silo area. The stability analysis indicated that the construction design of the Storage Silo was adequate. No. 5 Conveyor and Stacker Belt - Historically, the No. 5 Conveyor extended from the No. 5 Portal and fed coal to the No. 5 Stacker Belt. From the stacker, coal was fed to the raw coal storage pile. This 48 inch conveyor and stacker belt has been removed from the site. • Permit Renewal RN08-05 2.05-11 01/15/09