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6.8 Liquid Level Sensors The ASTs listed on Table 1 have the following liquid level sensors: Direct Reading Gauges: • Fueling Station —gasoline and diesel ASTs • Central Main Generator—generator AST • Central Kitchen Generator—generator AST • Delta Room Generator—generator AST • O.H. Close Unit 1 Generator—generator AST • O.H. Close Unit 4 Generator—generator AST • O.H. Close Education Generator—generator AST • Used Oil Tank The tanks at the Vehicle Fueling Station and Central Main Emergency Generator are filled manually by a contract vendor who connects a hose directly from the delivery truck to unload fuel. The tank truck operator visually observes with the use of a content gauge, when the liquid level reaches capacity the operator disengages fuel flow to the tank. The fuel reservoirs for the emergency generators (Central Kitchen, Delta Room, OH Close Unit 1, OH Close Unit 2, and OH Close Education) are filled by NCYCC personnel when necessary after operation and testing. The tanks are filled manually with a nozzle inserted directly into the tank and the individual performing refueling visually observes when the liquid level reaches capacity, at which point the operator disengages fuel flow to the tank. 6.9 Visible Discharges In the event that a discharge of oil from any storage container is observed, NCYCC personnel must promptly remove any accumulation of oil within the containment area. In the event that the oil product is not within a containment area, NCYCC personnel will consider the event as an oil spill and follow procedures as outlined in Section 8 of this plan. 6.10 Oil-Filled Equipment NCYCC contains a variety of oil-filled electrical and operating equipment such as transformers. In accordance with the SPCC regulation, these types of equipment are not subject to the requirements set forth in Section 6 of this Plan for bulk storage containers due to the volume of oil in the equipment. 6.11 Piping Piping from storage tanks to emergency generators are not contained to prevent discharge. All piping is aboveground and exposed to weather. It would not be practical to supply secondary containment to these pipes. Most of the generators are designed to automatically shut down if there is a loss of suction in the supply line or loss of pressure in the fuel return line. In either case, the generator will shut down. Therefore, the potential for a significant release due to failure of the piping is limited. Page 115