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ENVIRONMENTAL HEALTH DEPARTMENT <br /> SAN JOAQUIN COUNTY <br /> > OG <br /> = Donaa K.Heran R.E.H.S. Unit Supervisors <br /> N 304 East Weber Avenue, Third Floor Carl Borgman,R.E.H.S. <br /> Director Mike Huggins,R.E.H.S.,R.D.I. <br /> • AI Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> Program Manager Telephone: (209) 468-3420 Margaret Lagorio,R.E.H.S. <br /> �iFOR Laurie A.Cotulla,R.E.H.S. <br /> Pro Fax: (209) 464-0138 <br /> Program Manager Robert McClellon,R.E.H.S. <br /> g g Mark Barcellos,R.E.H.S. <br /> July 26, 2002 <br /> Oil Equipment Service <br /> PO Box 950 <br /> San Andreas, CA 95249 <br /> RE: Three Palms Grocery, 6732 E. Hwy 88, Stockton, Underground Tank System <br /> A review of the above site indicates that the secondary piping system will not meet <br /> secondary test requirements of SB 989. This system does provide cathodic protection but <br /> will not pass.a required pressure test. The present system is not a safe suction system <br /> with the check valve at the bottom. It is recommended that this system be replaced with a <br /> new primary and secondary piping system,although the system could meet code <br /> requirements according to the State Water Resources Control Board (SWRCB)by <br /> making the system a safe suction system...This repair would require that the present <br /> secondary system be used as a method of cathodic protection. <br /> The vent piping on this system is steel piping, which is not cathodically protected. These <br /> lines are a concern due to evidence that vapor may be the method by which MTBE has <br /> been escaping into the underground. It would be recommended that the existing systems <br /> be replaced in order to prevent possible contamination in the future. Due to the fact the <br /> system was installed with a ball float, the vent line system is exempt from regulation <br /> under the Underground Tank Law H&SC Section 25281.5 (b)(1).. Therefore the EHD <br /> cannot require that this vent piping be changed as long as the vent has been properly <br /> protected with a ball float system. Indications from the SWRCB are that legislation may <br /> be passed in the future regulating these vent piping systems and they may need to be. <br /> changed in the near future. . <br /> If you have any further questions regarding the matter,please contact me at (209) 468- <br /> 3446. <br /> Environmental Health Department <br /> Doug Wilson, Supervising REHS <br /> i <br /> i <br />