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PUBLIC`HEALTH SER)riCES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer .. <br /> 445 N. San Joaquin Street • P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> BRETT HUNTER <br /> ENVIRONMENTAL ENGINEER colpy <br /> CHEVRON USA PRODUCTS COMPANY <br /> P O BOX 5004 MAY 2 4 1994 <br /> SAN RAMON CA 94583-0804 <br /> RE: Chevron Station #9-6171 SITE CODE: 1784 <br /> 6633 Pacific Avenue <br /> Stockton CA 95207 <br /> San Joaquin County Public Health Services,Environmental Health Division(PHS/EHD)has completed review <br /> of the recently received quarterly reports dated October 25,1993 and February 7, 1994 both prepared by Sierra <br /> Environmental Services. PHS/EHD has the following comments for your consideration. <br /> Groundwater contamination continues to be evidenced in all monitoring wells, MW2 - MW7. In fact, <br /> groundwater contamination detected in MW2 appears to be increasing in concentrations more so than the <br /> other monitoring wells. PHS/EHD is concerned that the contamination evidenced in MW2 may be originating <br /> from a source other than the former underground storage tanks which were removed in 1986. <br /> Upon review of documents pertaining to the currently operating storage tanks,installed in 1987,it was noted <br /> that the currently operating underground storage tanks are out of compliance with the Underground Storage <br /> Tanks Regulations,California Code of Regulations Title 23,Chapter 16. The PHS/EHD underground storage <br /> tank inspector for this site is Pam Violett and she can be reached at (209) 468-0335. <br /> In order to further characterize the site and to evaluate alternative sources of contamination, please submit <br /> by July 1, 1994 a work plan to investigate the pump islands and tank pit areas. <br /> If you have any questions or comments, please contact Mary Meays at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Mary Meays, Senior REHS Diane M. inson, REHS <br /> Site Mitigation Unit Supervisor <br /> MM/6633PAC <br /> cc: CVRWQCB cc: Pam Violett, Senior REHS <br /> Elizabeth Thayer PHS/EHD <br /> cc: Lincoln Properties <br /> Wilbur H. Smith <br /> 374 Lincoln Center <br /> Stockton CA 95207 <br /> cc: Sierra Environmental <br /> Chris Bramer <br /> A Division of San Joaquin County Health Care Services <br />