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area, as depicted on Map 24. The 6,000 gallon diesel fuel tanks and containments will be removed when no longer <br />needed. <br />Water Tank <br />A 20,000-gallon water tank is proposed to be installed on the east side of the pump house. The tank is of a steel <br />construction and will be supported by a newly constructed 14' x 14' x ]' concrete pad. The location of this tank is <br />illustrated on Map 24. <br />The tank and pad will be removed when no longer required. <br />Surfactant Tank <br />Twentymile Coal Company will be moving an existing 8000 gallon storage tank to a permanent location adjacent to <br />the Electrical Shop. The tank will be supported by a concrete pad approximately 20' x 17' x ]' and enclosed in a <br />metal building. The building will be 20' x 17' x 20' and tie into the existing shop. <br />The building, pad and tank will be removed when no longer required and either placed in the portal area during <br />final reclamation or sent off site. <br />Batch Weigh/Loadout Transformer Pad <br />A concrete pad is required for a transformer at the Batch Weigh Loadout facility. The pad will be a 6' x 8' x 6" <br />steel reinforced concrete. Map 24 shows the location of this pad at the east end of the access road to the Batch <br />Weigh/Loadout. The transformer and pad will be removed when no longer needed. <br />Covered Storage Buildings <br />Two storage buildings were constructed at the facilities for dry storage of materials. The east building was <br />constructed next to the 20,000 gallon diesel tank installation. This storage area is 150' long by 50' wide by 20' tall. <br />The west dry storage area will be constructed in the tipple area with dimensions of 100' long by 30' wide by 20' <br />tall. Both structures are metal frame construction with a floor of 1' roadbase material. Both structures are <br />illustrated on Map 24. These structures will be removed when no longer needed. <br />Additional Rock Dust Bin <br />An additional rock dust bin (rock dust bin #2) was constructed next to the existing rock dust bin. The bin is within <br />previously disturbed area inside a small area exemption. Rock Dust Bin #2 is 35.5' high and has a capacity of <br />11,050 cubic feet. The foundation for this rock dust bin is a 22' x 24' x 1' steel reinforced concrete slab 6' below <br />grade. Four steel 1-beam pillars support the bin. The location of this rock dust bin is shown on Map 24 as Rock <br />Dust Bin #2. This additional rock dust bin and pad will be removed when no longer needed. <br />Coal Handling System <br />The original coal handling system was designed to handle a maximum production rate of 750,000 tons per year as <br />shown on Map 24, Surface Facilities. The system consists of two conveyors, a transfer building and a stacking <br />tube. The slope conveyor (BC-101) removes coal from the mine. The design capacity is 600 tons per hour based <br />on existing drive and maximum length. The drive is a dual 150 H.P. Dowty. A hydraulic take-up maintains <br />tension. <br />The tail piece is advanced into [he mine with development. The Slope Conveyor (BC-101) discharges coal onto the <br />storage pile feeder belt (BC-]02) at a transfer station. A flop gate in the BC-]O] discharge chute allows coal or <br />mine development rock to bypass BC-102 and be discharged onto a stacking conveyor. A stationary magnetic <br />MR OI-173 2.05-24 09/19/01 <br />