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Page 4 of 5 9. METHOD FOR OVERFILI.s/SPILL PROl'EMON AND CLEAN-JP: a. GASOLINE/TANK 1. Tank Level Alarm: The level of the tank will be continuously monitored by a Veeder-Root TLS250 Electronic Tank Level Sensor. a. This sensor will indicate the current level of the tank in order to assure capacity is available for the entire delivery. b. This sensor is also equipped with a high level alarm to prevent the possiblity of product overfill. When the product reaches high level sensor it sets off an audio/visual alarm that is in site of the fill area. 2. Gauging: Operator is to control delivery and guage tank prior to receiving fuel load to assure tank holding capacity is available for Entire delivery. Driver is to remain in atm during delivery to monitor the operation. 3. Ball float system: The ball float valve system installed with the tank substantially prevents the possiblity of overfill occurring. If the tank is filled to the ball float level, the petroleum product delivery will be cut to 3 gallons per minute alerting the delivery driver of a potential overfill condition. In the event that this occurs, the following actions will be taken: a. The delivery truck driver shall turn off the petroleum product supply at the truck, leaving the hose fully connected to the tank fill pipe and the truck. b. The small amount of petroleum product remaining in the hose shall be slowly drained into the tank. Since the ball float valve is 2" to 3" below the top of the tank, there remains a 200 + gallon capacity within the tank at the moment when the ball float closes off delivery. The bleed hole in the ball float valve allows the remaining petroleum product in the hose to completely drain through the fill pipe into the tank. c. The hose shall be disconnected from the fill pipe only when it has fully drained. In the event that spillage occurs upon hose disconnections- remaining small amount of petroleum product will be caught in gallon capacity leakproof container (CNI) . The product in the spill con will then be drained into the tank by opening a manually operated valve located in the spill container. b. Clean-up/Records: 1. Small spills (less than 10 gallon and only requiring 15 minutes to clean up) will be cleaned up using absorbent materials. 2. Larger spills will be reported to the Owner by the station operator or delivery truck driver before returning to the terminal. The Owner will notify a local Petroleum Maintenance Contractor who is equipped with a N.F.P.A. approved type hand pump, vacuum and transport container. 3. Spills will be cleaned up within 8 hours of detection, returned to local terminal and/or disposed of in a lawful manner.