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A. Source 11 (500 -gallon used oil storage tank): UL listed double wall steel tank. Secondary storage capacity exceeds capacity of primary container and can be manually monitored through visual inspection of the secondary compartment. Leak detection is provided through interstitial layer leak monitoring. Tank is filled by service technicians who pump used oil from transfer stations through a system of overhead pipelines; transfer quantities do not exceed 2-3 gallons. Any tank overfill would be immediately known to the technician who would cease any further transfer and immediately notify his supervisor. Tank is equipped with monitoring system that sounds an audible alarm upon release of product from the primary tank into the secondary container. To prevent overfill, tank has electronic overfill alarm that sounds when tank reaches 95% of capacity. This alarm would notify the person filling the tank to immediately cease this activity. b. Containers (none) e. Underground Piping: (none) d. Aboveground Piping Used Oil Tanks: Sources 1 and 11 have short aboveground pipelines that enable used oil to be pumped into the tanks from a transfer station. The line is charged only when oil is being pumped into the tank, which occurs only when a technician is present to operate the pump. Should the technician detect any problem, or other evidence of spillage, the technician will immediately turn off the pump and notify his supervisor. If the pump is inadvertently activated in the absence of a technician, it will pump only air. ii. Lubricating Oil Tanks: Sources 2, 3, 4, 5, 9 and 10 are all tied into a system of overhead distribution lines. These lines are pressurized by air driven pumps mounted on the tanks and provide lubricating oil to individual work areas. An unattended failure of one of these lines could result in the entire contents of one of these tanks (500 gallons, 500 gallons, 250 gallons, 250 gallons, 240 gallons and 500 gallons) emptying onto the shop floor. These lines are mounted on the shop ceiling and are at a height that will protect them from passing vehicles. Pumps are also shut down (air compressor turned off and air lines bled) at the end of each workday, thus preventing any significant release during nonworking hours. During work hours, the area in which these lines run is continuously staffed by service technicians. Any pipe failure would be immediately known and the respective pump promptly shut off and secured. iii. Gear Oil and Automatic Transmission Fluid Tanks: Sources 6, 7, and 8 are operated using short overhead pipeline which is connected to a manual hand pump. Technicians must be present to operate this pump and any leak or pump failure would immediately be known to the operator who would immediately stop transfer operations. Should the technician detect any problem, or other evidence of spillage, the technician will immediately turn off the pump and notify his supervisor. e. Containment Drainage: Sources 1, 2, 3, 4, 5, 9, 10, 11 are either fully enclosed, double wall tanks, or are located under roof where rainwater accumulation is not an issue. Sources 6, 7, and 8, single wall tanks are located inside building and are contained using secondary containment tubs which can be pumped out manually in the event of any spill or leaks. 4. Material Compatibility: The materials and construction of all petroleum bulk storage tanks and containers are compatible with the substances stored and the conditions of storage. Tracy Toyota SPCC Plan 12-07