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is closed or the pump is off. The inspector then records the unlocking/relocking of the drainage valve and <br /> the results of the inspection and signs the Secondary Containment Drainage Inspection Form(see Appendix <br /> B). If the water does appear contaminated,the liquid is contained for disposal. The completed Secondary <br /> Containment Drainage Inspection Forms are maintained in the Manager Equipment Service's files. <br /> Spill Prevention Devices: The tanks are equipped with direct view tape float gauge for measuring the liquid <br /> level in the tank which is monitored by the tanker truck driver during filling. Leak protection is provided <br /> by visual inspection of the tank. Overfill protection is provided by a high level alarm on the control panel <br /> under the delivery area canopy and in the shop office. <br /> There are on/off switches positioned at three locations including the control panel at the tank fuel farm, at <br /> the vertical posts at the north end of the fuel lanes in the Inspection Area, and the north wall of the shop <br /> supervisor's office that can be utilized to shutdown the fuel line in the event of a leak. On both ends of this <br /> critical route are leak detection manholes to assist in monitoring for leaks and recovering lost material <br /> should a leak occur. <br /> Spill Flows: The defueling shelter drain adjacent to the tanks would collect spills occurring during tank <br /> loading operations. The drain flows to an oil/water separator which is connected to a 4,000 gallon oil <br /> recovery tank and to the 120,000 gallon containment area. <br /> UST Unloading Area <br /> Secondary Containment Type and Capacity: Tanker trucks unloading in this area would have a maximum <br /> capacity of 5,000 gallons. Secondary containment is provided by the concrete parking lot surrounding the <br /> UST unloading area and the facility's drainage system that consists of leak detection manholes(SCP-1 <br /> through 6)to assist in recovering lost material should a large spill occur. <br /> Secondary Containment Drainage: Spill buckets are regularly inspected and runoff that collects in the spill <br /> buckets is pumped out and disposed of properly. <br /> Spill Prevention Devices: The tanks are equipped with overfill alarms and a leak detection system. The <br /> control panel is located in the compressor room. There are shut-off valves for the overhead transfer lines <br /> from the USTs located in the maintenance shop, compressor room and inspection area. <br /> Spill Flows: Spills occurring during tank loading operations would flow onto the concrete parking area. <br /> Large spills could flow north towards the storm drain. <br /> Maintenance Shop and Inspection Area <br /> Secondary Containment Type and Capacity: Secondary containment for the drums,overhead transfer lines <br /> and portable oil storage containers is provided by the physical structure of the maintenance shop,spill trays <br /> and the trench drains that discharge into the 1,000-gallon oil/water separator to the east of the building. <br /> Oil-filled 55-gallon drums are mounted on spill trays or containment basins sufficient to contain a leak. <br /> The maintenance shop is operated 24 hours per day and a leak or rupture would be immediately apparent <br /> to personnel. Spills will enter strip drains that discharge to an oil/water separator east of the shop. The oil <br /> captured by the oil/water separator is contained in the oil/water separator or the underground used oil <br /> recovery tank connected to the oil/water separator. The effluent from the oil/water separator flows into the <br /> city's sanitary sewer system. All used oil recovery tanks and the oil/water separators are inspected for <br /> proper operation and are pumped out by a licensed industrial waste processor as necessary. <br /> Secondary Containment Drainage: Secondary containment provided by the maintenance shop is protected <br /> from rainfall. <br /> 19 <br />