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shed will drain to the Sediment Pond. The listed products aze: Antifreeze, motor oil, gear oil, hydraulic oil, ATF, rock drill oil, and gasoline. Secondary containment will consist of the walls of the shed and shop. 2. A Used Oil tank will be placed on the outside shop wall within a containment azea consisting of a low block or concrete wall on a concrete pad. The nominal tank size will be 500 gallons and the containment will hold a minimum of 550 gallons. Used oil will be transferred to the tank using manual methods. Up to four 500-gallon diesel fuel tanks will be installed on the Whirlwind Pad azea (refereed to as the fuel station on Map C-2) immediately west of the ore pad. These tanks will be installed within larger livestock tanks (approx. 700-gallons each). This area will be isolated within a low depression on the pad azea so that any releases or spills will be contained within the immediate azea. 4. There will be 100 to 500-gallon diesel fuel tanks outside the generator trailers at the Whirlwind Portal, water treatment plant, and possibly one of the remote ventilation shafts. Secondary containment will be provided by livestock tanks large enough to hold a minimum of 110 percent of the diesel tank volume. 5. Small containers of oil and lubricants (less than 100 gallons total) will be stored and used in the two maintenance shops (i.e., Whirlwind and Packrat shops). Secondary containment will be provided by the shop walls and floor. 9. Warehouse and Maintenance Shops A mobile trailer and temporary lean-to structure will be used initially as the wazehouse and maintenance azea, respectively, at the Whirlwind portal azea. As the mine develops, these structures will be replaced by a one bay service azea and wazehouse wnstnxcted on top of the existing forty- foot by fifty-foot concrete pad of 6" thickness. This structure will be a prefabricated metal building ~~ Whirlwind Mine June 07 D-19