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PUBLIC HtALTH SERVI(fES a�,N <br /> A . <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer g® <br /> 'P <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 9520 11 <br /> 4j" q FoaN� <br /> 209/468-3420 <br /> ROBERT REEDER AUG 10 1999 <br /> 7115 CRYSTAL BLVD <br /> EL DORADO CA 95623 <br /> RE: MID VALLEY TRAILER SALES Site Code: 1305 <br /> 2421 N WILSON WAY <br /> STOCKTON CA 95205 <br /> A 1,000 gallon regular gasoline underground storage tank(UST) and associated piping were removed at <br /> the above referenced site on August 28, 1991. Analytical results of the tank pull samples confirmed the <br /> presence of contaminants at the site and an UST Unauthorized Release Report(UAR) #92-U05 was <br /> filed in January 1992. You were notified in a letter dated March 8, 1994 from San Joaquin County <br /> Public Health Services,Environmental Health Division (PHS/EHD) that you would be required to <br /> begin investigating the contamination at the site. The work would be prioritized based the State of <br /> California Water Resources Control Board(SCWRCB) "Prioritization System for Leaking <br /> Underground Storage Sites". The site was subsequently assigned to PHS/EHD Local Oversight <br /> Program (LOP) in January 1997. <br /> On September 16, 1997,a 12 foot by 7 foot by 7 foot deep excavation was conducted in the area where <br /> the petroleum contamination from the suspected piping leak existed. Analytical results of the bottom <br /> soil sample (SB-2) taken at approximately 9.0 to 9.5 feet below surface grade(bsg) and 6 feet north of the <br /> building wall were 8,100 pans per million (ppm) of Total Petroleum Hydrocarbon as gasoline(TPH-g), <br /> 49 ppm of Toluene, 66 ppm of Ethylbenzene, and 760 ppm of Total Xylenes. Benzene was non-detect. <br /> However,the detection limit was 25 ppm instead of 0.005 ppm. In a letter dated November 21, 1997, <br /> you were directed to submit a work plan which would define the vertical and lateral extent of the <br /> petroleum fuel hydrocarbon constituents distribution to PHS/EHD no later than January 15, 1998. <br /> This work plan has not been received by this office. <br /> Submit a work plan that will define the vertical and lateral extent of the contamination to PHS/EHD <br /> by August 31, 1999. <br /> Please note that your new point of contact at PHS/EHD for this site is Jeffrey Wong. All <br /> correspondence should be directed to him. Please feel free to call him at (209) 468-0335 if you have any <br /> questions. <br /> Donna Heran,REHS,Director <br /> Environmental Health Division <br /> Jeffrey Won REHS Margaret agorio,REHS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> C: RWQCB, Central Valley Region-Mark List <br /> A Division of San Joaquin County Health Care Ser,ices <br />