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3. Spill Prevention and Containmen, !a. Abbveground Storage Tanks i. Source 1 (1,000 gallon gasoline tank) (out of service): UL listed double wall horizontal square gasoline steel tank, located outside north of the service department. Secondary storage capacity exceeds capacity of the primary container and can be manually monitored through visual inspection of the secondary compartment. Therefore secondary storage capacity is more than adequate to contain the contents of the tank in the event of a total release. The tank is filled by a fuel supplier who pumps fuel into the tank through a hose/pump dispensing system. Transfer quantities are first verified by checking the amount of fuel in the tank prior to refill. This amount would then be subtracted from the tank capacity and the amount transferred would be less than or equal to the difference. Overfill prevention during filling consists of direct audible communication between the fuel supplier and the facility's designated employee monitoring the tank refill. If any tank overfill were to result, it would be immediately known to the fuel supplier who would immediately stop any further transfer. Fuel is transported from the tank to a dispensing hose suction pump attached to the tank. A pump failure should not result in a release. In the event that the dispensing hose is damaged or disconnected during fueling,the dispensing system will automatically shut off the pump. Product loss should be minimal. Leak detection is limited to visual observation. ii. Source 2 (480 gallon waste oil tank): UL listed double wall horizontal rectangular waste oil steel tank, located in the oil room. Secondary storage capacity exceeds capacity of the primary container and can be manually monitored through visual inspection of the secondary compartment. Therefore secondary storage capacity is more than adequate to contain the contents of the tank in the event of a total release. Overflow and leak detection consists of manual observation of the tank. If any tank overfill were to result, it would be immediately known to the technician who would immediately stop any further transfer. Tank is filled by technicians pumping waste oil from portable oil receptacles to the tank via a pneumatic pump station. The pump is activated only when an employee is present. Transfer quantities do not exceed 30 gallons. Overflow and leak detection consists of manual observation of the tank. If any tank overfill were to result, it would be immediately known to the technician who would immediately stop any further transfer. The tank is equipped with an interstitial leak detection gauge. If a leak develops in the primary tank, the secondary compartment will fill causing the detection gauge float to rise. The gauge will visually show that the primary tank has ruptured. If the gauge does indicate a leak in the primary tank,then the tank will be drained and placed out of commission until it is repaired and passes an integrity test. The leak detection gauge is observed during tank inspections. Overflow prevention is limited to manual observation of a Electronic Wireless Tank Gauge, which is attached to the tank and measures the tank volume in gallons. The tank is equipped with an overfill alarm. Source 3(500 gallon new oil tank): UL listed double wall horizontal rectangular new oil steel tank, located in the oil room. Secondary storage capacity exceeds capacity of the primary container and can be manually monitored through visual inspection of the secondary compartment. Therefore secondary storage capacity is more than adequate to contain the contents of the tank in the event of a total release. The tank is filled by an oil supplier who pumps new oil into the tank through a hose/pump dispensing system. Transfer quantities are first verified by checking the amount of new oil in the tank prior to refill. This amount would then be subtracted from the tank capacity and the amount transferred would be less than or equal to the difference. Overfill prevention during filling consists of direct audible communication between the oil supplier and the facility's designated employee monitoring the tank refill. If any tank overfill were to result, it would be immediately known to the oil supplier who would immediately stop any further transfer. Leak detection is limited to visual observation. The tank is equipped with an interstitial leak detection gauge. If a leak develops in the primary tank,the secondary compartment will fill causing the detection gauge float to rise. The gauge will visually show that the primary tank has ruptured. If the gauge does indicate a leak in the primary tank, then the tank will be drained and placed out of commission until it is repaired and passes an integrity test. The leak detection gauge is observed during tank inspections. Overflow prevention is limited to manual observation of a Electronic Wireless Tank Gauge,which is attached to the tank and measures the tank volume in gallons. Tracy Chevrolet SPCC Plan 08-14