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Zuna J. Barker [EH] <br /> From: Coulter, Stephen M. <Stephen.M.Coulter@andeavor.com> <br /> Sent: Monday, September 24, 2018 12:02 PM <br /> To: Zuna J. Barker[EH]; Garrett Backus [EH] <br /> Subject: OVERFILL PREVENTION EQUIPMENT INSPECTION Tesoro/Shell 68150 -6133— 13975 E <br /> Hwy 88, Lockeford, CA 95237 <br /> Attachments: San Joaquin County 68150 OF.pdf, 13975 E Hwy 88 Lockeford - EH.PDF; <br /> Set_Up_Alarm_H istory_8-28-2018.txt <br /> Dear Inspector: <br /> In compliance with the July 15, 2015 new Federal Regulations(40 CFR Part 280),enclosed, please find the completed <br /> "Overfill Prevention Equipment Inspection"that was performed at the time of the most recent annual monitoring <br /> system certification. Federal Underground Storage Tank (UST) rules require that overfill prevention equipment <br /> automatically restrict flow or alert the transfer operator when the tank is no more than 90 percent full or shut off flow <br /> into a tank when it is no more than 95 percent full.This site location meets the requirement of alerting the transfer <br /> operator when the tank is 90%full by triggering an audible and visual alarm.This alarm is an integral part of the <br /> automatic tank gauge (ATG) system.This inspection verified that the overfill alarm was operating correctly and was set <br /> to provide the warning when the tank is no more than 90 percent full.The ATG probe was removed from the tank and <br /> product float was moved to the position corresponding to the 90 percent fill level,thereby activating the alarm as <br /> required.The inclusion of the annual monitoring system certification report and alarm history with this overfill <br /> equipment inspection form demonstrates compliance the new Federal inspection requirement. <br /> Steve Coulter <br /> Environmental Compliance Administrator <br /> Tesoro Refining& Marketing Company LLC <br /> (951)538-6895 Mobile <br /> (951)880-0048 Fax <br /> Stephen.M.Coulter@andeavor.com <br /> 1 <br />