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PUBLIC HgALTH SERVICES <br />SAN JOAQUIN COUNTY Q I <br />ENVIRONMENTAL HEALTH DIVISION ( ` <br />Karen Furst, M.D., M.P.H., Health Officer <br />304 East Weber Avenue, Third Floor • Stockton, CA 95202 4`'96 <br />209/468-3420 <br />RHL <br />Attn: Chistopher Guterres <br />1390 Willow Pass Rd. <br />Suite 420 <br />Concord, Ca 94520-5280 <br />March 2, 1998 <br />RE: Upgrade plan for Unocal #4409 1502 N. EI Dorado, Stockton, Ca. <br />As per your request a plan review was made and this review revealed that your <br />plans would not meet the minimum requirements for the 1998 upgrades in <br />addition to existing plan submittals, would be required to include but not be <br />limited to the following: <br />t. All information on the tanks is incomplete and must be provided in order to <br />determine what will be needed in order to upgrade this tank system. Plans <br />indicate that the tank is fiberglass and the "A" forms indicate that the tanks <br />are steel clad. Please identify the actual tank types which you intend to <br />upgrade. Note that a special inspector will be required to provide a <br />determination on either type of tank, for catholic protection and for the <br />structural soundness of the tanks. The EHD representative must be onsite <br />and observe all inspections of the tank system made by a special inspector. <br />Specific requirements of the inspection will be outlined by the EHD depending <br />on the type and age of the tank to be upgraded. (CCR title 23 section 2660 <br />(k)) <br />2. Tanks that are single wall fiberglass or steel clad must have a site <br />assessment prior to approval of the plan for upgrading. (CCR title 23 section <br />2660 (1)) Assessments are made after application to the EHD Site Mitigation <br />Unit. You may contact Margaret Lagorio, Supervising REHS at 209-468- <br />3449 for further information on applications for site assessments. <br />3. If the site is found to be contaminated, no further action will be permitted until <br />a cleanup plan is approved. If tanks are approved to be left in place on a <br />contaminated site by the EHD, a monitoring system must be installed which <br />meets the requirements of the Health and Safety Code section 25296 (c) <br />4. Single wall pressurized lines cannot be left in place unless they were put in <br />under a permit from the EHD. If these lines were not installed under permit <br />and inspection, then the lines must be verified to have been properly <br />installed by uncovering and inspection of the lines by a special inspector and <br />this inspection observed by the EHD staff. Sampling of the line area will also <br />d Diction of San Joaquin (:umilp Health Caro Servicu> <br />