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PUBLICi"HEALTH SER)HiCES Q�,N <br /> SAN JOAQUIN COUNTY oP c;c <br /> z' <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-4388 �4 , F•o �;`P <br /> 209/468-3420 ' <br /> SCOTT HOOTON <br /> BP OIL COMPANY FWAR 111997 <br /> BUILDING 13 SUITE N <br /> RENTON WA 98055-4931 <br /> RE: BP OIL SITE NO. 11195 SITE CODE: 1554 <br /> 16500 S I-5 <br /> LATHROP CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS-EHD) has completed a <br /> review of the file on the above noted site in response to your request for closure dated December 16, <br /> 1996 and offers the following comments for your consideration. <br /> PHS-EHD agrees with the conclusion in your letter that data from the site gathered over time indicate a <br /> localized plume near the tank complex. However, PHS-EHD needs additional supporting information in <br /> order to document the actual or potential risk of this contamination now and in the future. <br /> Specifically, the presence, distribution and ultimate fate of methyl tertiary butyl ether(MTBE) at the site <br /> must be addressed. Also, a comprehensive receptor survey (to include current and potential future <br /> private, municipal, iN8ustrial and agricultural wells, subsurface structures, and vapor pathways) must be <br /> conducted for this site. These items should be submitted to PHS-EHD for review. Should these data <br /> indicate no significant risk to current and future beneficial uses of groundwater and to human health and <br /> the environment, PHS-EHD will prepare this site for closure consideration. <br /> Until this site receives a closure certification, please continue to monitor the existing wells at the site. <br /> PHS-EHD is using this information to document plume behavior overtime. <br /> If you have any questions, or wish to discuss this letter in more detail, please contact Linda Turkatte, <br /> Senior REHS, at (209)468-3441. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> 'Li)nda <br /> 3 <br /> A.Turkatte, Senior REHS Margaret, agorio, REHS <br /> Site Mitigation Unit Supervisor <br /> LT <br /> c: CVRWQCB, Beth Thayer <br /> c: Alisto Engineering Group, Brad Nagle <br /> A Division of San Joaquin County Health Care Services <br />