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• • <br /> Possible Spill Occurrence: <br /> i) Overfilling: The greatest spill potential is from <br /> overfilling during the fuel transfer <br /> process (i.e. filling the tank) . Spill <br /> prevention consists of constant supervision <br /> during the filling process. Any fuel <br /> spilled during the filling process would be <br /> contained in the overfill box. <br /> ii) Tank Leak: If a leak occurs, it would be discharged <br /> into the soil surrounding the tank. Fuel <br /> inventory in the tank is continually <br /> monitored by the computerized fuel level <br /> monitor. Printouts are reconciled with <br /> readings from the fuel pump totalizer by the <br /> facility personnel. Leak tests are <br /> performed annually to verify the integrity <br /> of the tank and piping. The maximum volume <br /> of fuel that could reasonably be expected to <br /> discharge due to tank leak is 50 gallons.. <br /> 3) Underground Hydraulic Oil-Storage Tank <br /> a) The facility has one 1,000-gallon underground tank used for <br /> storing hydraulic oil, and it is located north of the Garage <br /> Building. It is a double-walled fiberglass-clad steel tank <br /> which is compatible with the stored fluid. The tank and the <br /> associated piping have a continuous leak monitoring system: one <br /> located in the tank's annular space; and one in the pipeline <br /> collection sump. The monitoring system activates an audible <br /> and light alarm in the Garage Building. If an alarm is <br /> activated, an assessment to determine the cause will begin and <br /> may include leak testing. The tank fill-pipe is equipped with <br /> a 20-gallon overfill box which is product-tight to contain <br /> spills due to overfilling. The dispenser nozzle used for <br /> dispensing hydraulic oil in the Garage is not equipped with a <br /> automatic shut-off device. The Garage Foreman is responsible <br /> for the tank and its contents. <br /> Possible Spill Occurrence: <br /> i) Overfilling: The greatest spill potential is from <br /> overfilling during the oil transfer <br /> process (i.e. filling the tank) . Spill <br /> prevention consists of constant supervision <br /> during the filling process. Any fuel <br /> spilled during the filling process would be <br /> contained in the overfill box. <br /> 3-4 <br />