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e) Mobile Substation Transformers <br /> a) Occasionally one to three mobile substation transformers <br /> are stored here for emergency use and they are located <br /> north of the Garage Building. The mobile substations <br /> contain from 875 gallons to 4,195 gallons of mineral oil <br /> and are used at nearby substations in case of emergency. <br /> Possible Spill Occurrence: <br /> i) The greatest spill potential is from leakage of the <br /> equipment. These pieces of equipment are stored at <br /> the Service Center for emergency use at substations <br /> and are not in use while in storage. The maximum <br /> volume of oil that could reasonably be expected to <br /> spill due to leakage is 100 to 150 gallons and it <br /> would be contained in the oil/water separator located <br /> at the west end of the yard. <br /> f) Transformer Repair Building <br /> Approximately 2 to 4 pieces of returned electrical equipment <br /> containing mineral oil, PCB, or suspected PCB contaminated oil, <br /> and temporarily stored in the Electrical Equipment Repair Shop. <br /> This equipment is stored here while being tested and <br /> refurbished to be put '.pack into service. If the equipment <br /> shows signs of leakage it is immediately drained of oil and/or <br /> placed in a bag and then a plastic-lined wood box as secondary <br /> containment. The volume of oil in the various pieces of <br /> equipment ranges from 10 to 40 gallons. <br /> Possible Spill Occurrence: <br /> i) Overturning during The volume of oil that could <br /> handling with a reasonably be expected to spill is <br /> forklift or 10-40 gallons . Operations and <br /> hydraulic lift maintenance personnel are trained in <br /> safe operation of forklifts and <br /> hydraulic lifts to avoid such <br /> occurrences. Interior spills would <br /> be contained within the building. <br /> ii) Leakage during Any equipment that shows signs of <br /> storage: leakage is immediately drained of <br /> oil or placed in a plastic-lined <br /> wood box. The equipment in the <br /> building is inspected daily for <br /> signs of leakage. No more than 5 to <br /> 10 gallons of oil could reasonably <br /> be expected to leak before it would <br /> be discovered. Leakage would be <br /> contained within the building. <br /> 3-11 <br />