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PUBLIC hEALTH SEM CES <br /> P,OUIp <br /> SAN JOAQUIN COUNTY i° �.�o <br /> J <br /> ENVIRONMENTAL HEALTH DIVISION y <br />` Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer w. <br /> 1304 E. Weber Ave., Third Floor • P O. Box 388 • Stockton, CA 95201-0388 <br /> 209/468-3420 [el <br /> n 0))' <br /> It J BRETT HUNTER MAILED DEC 6199P <br /> CHEVRON USA INC <br /> I'.: P O BOX 5004 <br /> SAN RAMON CA 94583-0804 <br /> !' RE: Chevron Service Station #9-1918 SITE CODE: 1..138 i <br /> i. 45 East Harding Way <br /> Stockton CA 95204 <br /> r <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> completed review of the "Third Quarter 1995 Monitoring Report" dated August 24, 1995 and <br /> prepared by Blaine Tech Services. PHS/EHD has provided a summary of the meeting for your "! <br /> consideration. <br /> i <br /> „Please note that upon PHS/EHD's review of well construction details that depth to groundwater is <br /> currently above the screened interval of MW9 and approaching the top of screen in MW10 and <br /> MW11 . It should be recognized that the analytical data from MW9 suggests that once the J <br /> groundwater level exceeded the screen interval that concentrations have decreased possibly as a� <br /> result of dilution. <br /> , <br /> Please provide monitoring well construction details on analytical summary tables, so that possible <br /> dilution effects may be quickly deduced. <br /> If you have any questions, do not hesitate to contact Mary Meays at (209) 468-0337. <br /> I <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Mary Meays, Senior REHS Diane M. Hinson, REH It <br /> f <br /> Site Mitigation Unit Supervisor <br /> MM\45HARD <br /> cc: Elizabeth Thayer, CVRWQCB <br /> Carolyn Lawrence <br /> S <br /> Michael Babitzke <br /> Julie Resse, Taco Bell, 17901 Von Karman, Mail Drop 707, Irvine CA 92714 <br /> a <br /> A Division ofSan Joaquin County Health Cara Services <br /> i <br />