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Spill Prevention Devices: A stick and/or visual inspection is used to determine the amount of material that can be accommodated by the drum. Spill Flow Pattern: Spills would be contained and cleaned inside the building structure. Emergency Generators Secondary Containment Type and Capacity: The two emergency generators are located each on a concrete slab within an enclosed weather-resistant cabinet. Minimal secondary containment is present in the drip pan under the attached 500-gallon diesel tanks; however, a concrete secondary containment structure surrounds each generator. The containment capacity was based on the 25-year, 24-hour storm event precipitation design criteria. The shop generator has a total capacity of 650 gallons and the warehouse generator 1200 gallons. Tanker trucks filling the tanks would have a maximum capacity of 5,000 gallons. Secondary containment for tank loading operations is provided by the concrete parking lot adjacent to the emergency generators and the facility's drainage system that consist of manholes to assist in recovering lost material and determining how far a product has migrated should a spill occur. Spills occurring during tank loading operations would be contained by the concrete parking lot adjacent to the tanks. Leaks from the piping would be contained by the drip pan, secondary containment structure,and the concrete pad and parking lot adjacent to the tanks. The facility is operated 24 hours per day and a leak or rupture would be immediately apparent to personnel. Secondary Containment Drainage: The generator tanks are each located within an enclosed weather- resistant cabinet surrounded by a secondary containment structure,but otherwise exposed to precipitation. The secondary containment structures were built in conformance with the 25-year, 24-hour storm event precipitation design criteria, which allows storm water to remain collected within the containment structures. Should a rain event occur that exceeds the containment capacity, overflow would enter storm drains located near the generators,discharge to the drainage ditch,and enter the city drainage system. Rain water collected inside the containment may either evaporate or be pumped out and discharged if no sheen or odor are detected. If a sheen or odor are present, absorbent would be deployed to remove the contaminants prior to discharge or the contaminated water would be pumped into a container and disposed of as hazardous waste. Spill Prevention Devices: During filling of the tank, facility personnel and the tanker truck driver visually monitor the level of fuel in the tank to prevent overfilling. Spill Flow Pattern: Spills would be contained in the drip pan and secondary containment structures,by the concrete parking lot, or at spill control points prior to entering the city drainage system. Spills occurring during unloading would be immediately apparent to the tanker truck driver and facility personnel. Office Secondary Containment Type and Capacity: Secondary containment for the elevator hydraulic oil tank is provided by the physical structure of the office building. The facility is operated 24 hours per day and a leak would be immediately apparent to personnel. Secondary Containment Drainage: Secondary containment provided by the office building is protected from rainfall. 21