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a. Steel or clad tanks <br /> i. interior lining cleaned by wipe down <br /> ii.visual check of lining <br /> iii.thickness test of lining <br /> iv. hardness test of lining <br /> v.electrical resistance holiday detector test <br /> A. ultrasound thickness test of steel walls by appropriately trained person <br /> vii.vacuum test <br /> b. Fiberglass tanks <br /> i. interior lining cleaned by wipe down <br /> ii.visual check of lining <br /> iii.thickness test of lining <br /> iv. hardness test of lining <br /> v. interior diameter measurements <br /> vi.vacuum test(not required if submerged by 50%of depth in ground water) <br /> Stacy Rivera <br /> Lead Sr.Registered Environmental Health Specialist <br /> San Joaquin County Environmental Health Department <br /> 1868 E.Hazelton Ave.,Stockton,CA 95205 <br /> phone(209)616-3043 <br /> .fax(209)468-3433 <br /> *Test notifications and test results should be sent to the general UST email: u t jgov.orce <br /> *NOTE* I will be out of office every other Friday. If you are unable to reach me on those days and need to speak to someone <br /> immediately,please call(209)468-3420 or email our UST email address. <br /> January 3, 17,311 February 14,28 1 March 14,28 1 April 11,25 <br /> EHD will be closed for the holidays on: <br /> January 1,20 1 February 17 1 May 26 <br />