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l l r77f4 X7'117-aRM"Er4 <br /> xizm WhLAdUs-Unpany <br /> Maximum Maximum <br /> Map Location and Possible Spill Probable Direction Secondary <br /> ID Potential Event Volume Discharge Rate2 of Flow Containment <br /> (gallons) <br /> 008 Diesel Gen-set 1,026 121 gal/hr for pipe To storm drain system, Secondary containment within <br /> Outside east side failure catch basins east double-walled steel tanks. <br /> (south end) of <br /> warehouse Additional active secondary <br /> -Failure of AST containment measures <br /> (breach below product <br /> level) <br /> -Tank overfill <br /> -Pipe failure <br /> -Leaking pipe or <br /> valve packing <br /> OWS Oil/Water Separator Most likely<50 10 gpm To storm drain system, Active secondary containment <br /> adjacent to truck wash catch basins north and measures <br /> south <br /> i The two 10,000-gal capacity fuel tanks at the Diesel Fuel Tank Farm are double-wall tanks manifolded with a siphon bar. Therefore,the <br /> maximum possible release would be 20,000 gallons. However, this would require a breach of both the primary and secondary containment on <br /> one or both tanks. Note: the tanks are connected by a siphon. A loss of primary tank integrity in either tank would not cause a release to the <br /> environment. A break in the siphon line could cause a minor release to the curbed area around the tanks,but not a release to the storm drain <br /> system. A break in the fueling line would also result in only a minor spill since the ant-siphon valve on the fueling pump would stop the flow. <br /> In addition,the fuel island is equipped with an EMERGENCY PUMP SHUTOFF. A break in the fuel delivery piping during fueling would also <br /> be limited by the operator. Therefore,the planning scenario (maximum probable spill) remains the same for these two interconnected tanks: 100 <br /> gallons. See also Appendix L-Dedicated Secondary Containment Capacity Calculations,Active Measures,and additional Secondary <br /> Containment Capacity for a full description of the containment capacity. <br /> 2 The maximum probable discharge rate for Transformers is based on a 1/2' diameter hole at the base of the dielectric fluid reservoir;for the diesel <br /> genets,a complete failure of the fuel supply/return piping;and for the OWS, a failure of the pump out-hose. <br /> 14 MARTIN-BROWER <br />