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.N r~ _>`~ 2 - 28 2.2.1 Buildings and Other Facilities • MINE SITE One office trailer will be located on the mine b~ ch. The 3MV substation is supported by six oncrete footers which are two feet wide. The 40' by 40' shop building has been constructe with a concrete floor. Expansion o~he building to 40' b 100' is shown on Figure 2.2-2 a reclamation costs are shown on Table 3.7-1 Pa a 29. The 2,000 gallon fuel storage tank h been nested inside f a cathodically protected 4,000 gallon tank to minimize the possibilit f leaks affecti groundwater. The conveyor belt exit the mine n an elevated steel frame gantry approximately 135 feet long which is supported b ste/e columns in concrete footers; total height of this gantry above the bench is 35 feet. The (~rtable Crusher is a full self-contained unit used to size • • run of mine coal. Its major compbne is are a roll crusher, screen, and conveyor belts. A concrete pad with wing walls s ryes as a foundation for this unit. Figure 2.2-2 shows the location of buildings and oth facilities wh are listed in Table 2.1-1. During 1989, Grand Val ey installed a bul rockdust bin and a concrete foundation for its support. Grand Valley will b% replacing the existing meta ortal arches with concrete portals. The concrete portals will be 30 feet long to allow backfi to be placed along the length of I the coal outcrop. The backfill will prevent further oxidation nd sloughage of the coal from 1 the overlying sandstone and prevent further deterioration oft sandstone. The concrete portals will also enhance protection for miners entering and exitin the mine. The configuration of th~ portals is shown on Figure 2.2-2 . Reclamation o he concrete portals will involve breaking up the concrete and placing it into the mine openings. Reclamation costs calculatio! are detailed in Table 3.7-1 Pages 27 and 28. ---! M° Volume 1 1-7.98