COMPLIANCE INFO_1985-1993 - Laserfiche WebLink

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7. Potential Spills - Prediction and Control a. Faciiitg Description The oil storage facilities consist of three 25,000 gallon oil storage tanks located underground beneath the sidewalk adjacent to Lindsay Street on the north side of the building. The fuel handling facilities consist of a system of pipes, pumps and four day tanks. Three of the day tanks serve the three diesel engine generators in the basement. These consist of 300 gallon and 550 gallon cylindrical tanks located underground beneath the engine room floor and a 275 gallon oval shaped tank located in the engine room. The fourth day tank is a 275 gallon oval shaped tank located in the gas turbine generator room on the roof of the building. The three main storage tanks are filled through fill boxes and underground pipes located beneath the sidewalk. The locations of the building, tanks, fill boxes, side walk, streets and storm drains are shown in Figure I. The three diesel engines are test run briefly each month. The gas turbine is test run and/or provides auxiliary power for an average of ten hours per month. Annual fuel usage under these conditions is estimated to be 11,000 gallons per year. Fuel oil deliveries are required every one to two years to maintain adequate supplies. The last fuel oil delivery was in 1982. Fuel oil consumption and the requirement for deliveries would increase during an extended interruption in power supply. b. mill Sources Associated with the Fuel Handling Facilities Oil leaks could potentially develop at various locations in the fuel handling facilities including pumps, valves, the day tanks and piping. Most of these leaks will be 10 gallons or less. The largest potential leak would be a complete loss of the above ground day .tank contents of 275 gallons. Overflow of the day tanks should be prevented by the high level pump stop device provided on the tanks. Leaked oil from the day tank and other sources would puddle on the floor. The leaked oil would be discovered by the inspection proce- dures discussed later. In any event, the engine and turbine room walls would serve as a secondary containment for all leaks in the fuel handling facilities so that no spills to navigable waters are anticipated. C. Spill Sources Associated with Tank Filling Operations Oil spills could potentially develop during tank filling operations due to tank truck operator carelessness or due to faulty hoses, connections and/or pumps. Tank truck operator carelessness could result in overfilling of the storage tanks, improper handling and/or positioning of the filling hose or RKE736I1438537