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PUBLIC *--HEALTH SER�CES <br /> �° cp <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION y{ <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 r <br /> E: ' <br /> DANIEL T KIRK <br /> SHELL OIL COMPANY <br /> P 0 BOX 4023 FED 2 3 19�� <br /> CONCORD CA 94524 <br /> RE: Shell Service Station SITE CODE: 1906 <br /> 420 W. Kettleman Lane <br /> Lodi, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) is providing you with notification that the State Water Resources <br /> Control Board Underground Storage Tank Cleanup Fund Program (Cleanup Fund) staff <br /> has reviewed our file on the above referenced site to determine if you are in <br /> compliance with corrective action directives. <br /> In 1989 a site assessment was performed at this site to assess subsurface <br /> conditions prior to a planned underground storage tank (UST) closure/replacement. <br /> Fifteen shallow soil borings were drilled and eleven soil samples collected <br /> during drilling were analyzed. Some gasoline contaminants were evidenced in <br /> these samples. <br /> In 1990 three monitoring wells were installed at the site. The groundwater <br /> gradient for this site varies from southeast to southwest. As previously <br /> discussed in a February 1994 letter there are no monitoring wells close to and <br /> downgradient of the underground storage tanks or boring 8 where soil <br /> contamination was evidenced. <br /> Further investigation to define the extent of the soil/groundwater contamination <br /> is warranted. PHS/EHD has accepted annual sampling and monitoring until this <br /> further investigation is conducted. <br /> The Cleanup Fund requires active investigation and remediation. In order to <br /> remain in compliance for reimbursement from the Cleanup Fund a work plan for <br /> further investigation of the site must be submitted within 90 days of the date <br /> of this letter. If you choose to proceed with the UST closure/replacement <br /> discussed in 1989 as the further investigation, please submit the tank closure <br /> and replacement plans to the PHS/EHD UST unit within 30 days of the date of this <br /> letter. <br /> If you have any questions contact Margaret Lagorio at (209) 468-3449. <br /> Donna Heran, REHS, Director <br /> Env <br /> ironmental Health Division <br /> orio, Lead Senior REHS Diane on, REHS <br /> Site Mitigation Unit Supervisor <br /> ML <br /> c: SWRCB - Barbara Andersen <br /> c: CVRWQCB - Beth Thayer <br /> c: Fugro West, Inc. <br /> A Nsision of San Joaquin Court-, Health Care Services <br />