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Most piping runs are short (less than 10 feet), such that the pipe is adequately supported by its <br /> connections to the tanks and/or generators. Where pipe support is needed, it is supplied by industry <br /> standard pipe support. The piping supports appear to be installed to minimize abrasion and corrosion. <br /> 6.12 Leak Detection <br /> The ASTs do not have leak detection systems. Periodic manual interstitial monitoring is recommended <br /> for those ASTs without automatic leak detection systems. <br /> 7. Spill History, Potential Sources, and Prevention <br /> 7.1 Spill History <br /> In the past five years, no spill incidents (greater than 25 gallons or release of any volume to storm drains, <br /> surface water, or groundwater) have occurred at the NCYCC facility. <br /> 7.2 Potential Sources of Petroleum Spills <br /> This section identifies possible sources of petroleum spills and leaks at the facility: <br /> Storage Tank System <br /> • Overfill and spills during fuel delivery <br /> • Leaking systems (tanks and piping) <br /> • Damage to tank systems (e.g., impact by vehicles, damage to dispenser equipment) <br /> • Product Dispensing and Delivery <br /> • Spill or transfer hose rupture during product dispensing/delivery <br /> • Overfill of equipment <br /> • Leaks and/or siphoning from dispensing/delivery equipment <br /> • Overturning of drums <br /> Potential spill scenarios for each tank and activity are provided in Appendix C, Table C-3. <br /> 7.3 Spill Prevention <br /> The following items contribute to spill prevention at the facility: <br /> • Petroleum loading and unloading procedures. <br /> • Petroleum delivery drivers are trained in the delivery of petroleum product. <br /> • Petroleum delivery drivers will visually observe tank filling and are to remain within reach of the <br /> truck's petroleum transfer shutoff valve during refueling of ASTs. <br /> • Used oil accumulated at the Auto shop will be emptied into a used oil storage drum using a <br /> funnel or similar device to prevent discharge to the ground surface. The used oil storage drums <br /> will remain closed except when oil is being added to the drum. <br /> • Used oil stored in 400-gallon tank will be pumped directly from the tank into a transport vehicle <br /> provided by a commercial used oil recycling company. <br /> Page 116 <br />