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y' < THOMAS R. FLINN P.O.BOX 1810-1810 E.HIAZELTON AVENUE DIRECTOR STOCKTON,CALIFORNIA 95201 (209)468-3000 FAX(209)468-2999 'aCIHGRI• www.co.san-joaquin.ca.us THOMAS M. GAU DEPUTY DIRECTOR MANUEL SOLORIO Workim &T YOU DEPUTY DIRECTOR nECE�j , STEVEN WINKLER w V�[ED DEPUTY DIRECTOR BENTON ANGOVE MAR 2, 2 2004 BUSINESS ADMINISTRATOR 6NVIRo1VML VI HEALTH March 12, 2004 PERMIT/SERVICES To: Chuck Peek,Hospital Facilities Manager From: Dan McCann, Fleet Manager r Subject: FUEL SPILL AT HOSPITAL The incident occurred on Sunday February 29th at approximately 10:00 P.M. Sheriff Deputies Sanchez, McKee, and M. Smith were fueling their patrol vehicles when they smelled fuel and then noticed it coming out the vent line on the most easterly located unleaded fuel tank at 500 Hospital Road. It was determined that these officers witnessed the spill, shutdown the dispensing system using the emergency switch and immediately called dispatch which notified the fire department. You received notice shortly after the fire department was called at approximately 10:30 - 10:45 P.M. On Monday, March 1St,you asked Motor Pool to do a reconciliation of fuel deliveries and dispensed product to determine how much fuel was potentially spilled. We have determined that the amount of loss is approximately 37 gallons. Attached is the Tank Balance report where I have added some calculations and descriptions of the adjustments made to determine this loss. We had a discussion and reviewed the tank valving at the site on Wednesday March 3`d with Joe Bagley of Bagley Enterprises. Joe determined fuel siphoned from one tank to the other and eventually was pressurized out the vent line. The cause was that the vapor line valve was set incorrectly corresponding to the empty tank versus the one being drawn from and a bleeder value was open which allowed a siphon effect on the vapor line. All valves have been corrected and secured to prevent unauthorized change.