Laserfiche WebLink
W <br /> San Joaquin County DIRECTOR <br /> P <br /> �O °"'" CO <br /> Donna Heran,REHS <br /> Environmental Health Department ASSISTANT <br /> DIRECTOR <br /> a 600 East Main Street Laurie Cotulla,REHS <br /> :{ Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> • Carl Borgman,REHS <br /> ci , •:P Mike Huggins,REHS,RDI <br /> F oaf Website: www.sjgov.org/ehd Margaret Lagorio, REHS <br /> Phone: (209)468-3420 Robert McClellon, REHS <br /> Fax: (209)464-0138 Jeff Carruesco,REHS,RDI <br /> j <br /> SEP ayy j 67 REHS <br /> STEPHANIE FURGAL SANDRA YACOUB UU <br /> CHEVRON ENV MGMT COMPANY ROMEO YACOUB <br /> 6001 BOLLINGER CYN RD K2240 3978 S HWY 99 E FR RD <br /> SAN RAMON CA 94583 STOCKTON CA 95215 <br /> RE: Low Price Auto Glass/Former Texaco SITE CODE: 1322 <br /> 3978 S. Hwy. 99 E. Frontage Road <br /> Stockton CA 95215 <br /> San Joaquin County Environmental Health Department (SJC/EHD) has received <br /> correspondence dated September 10, 2007, from Chevron Environmental Management <br /> Company (Chevron). Chevron was named as a responsible party to this site based on the <br /> documented operation of a service station with underground storage tanks (UST's) by <br /> Texaco from approximately 1956 through 1973. Chevron considers the contaminants of <br /> concern at this site to be methyl tertiary butyl ether (MTBE) and 1,2-dichloroethane (1,2- <br /> DCA). They state that Texaco did not begin using MTBE as a fuel additive in this region until <br /> 1992 so the release must have occurred after Texaco operated at the site. They further <br /> reason that 1,2-DCA is a common industrial solvent and that the lack of information <br /> concerning the site uses/operations from 1974 through 2000 is sufficient reason for them to <br /> not accept responsibility for the contamination and perform the required investigation and <br /> remediation of this site. <br /> While SJC/EHD currently has no records documenting site usage from 1974 thru 2000, we <br /> do know that underground tank law went into effect in 1984. If UST's were installed after that <br /> time they would have been required to be permitted through our agency, and no such <br /> permits exist. In addition, prior to 1984 UST system emissions would have been permitted <br /> through the Air Pollution Control District. <br /> SJC/EHD does not consider MTBE to be a contaminant of concern at this site. The reported <br /> detections of MTBE in soil samples at this site were analyzed by method 8021 but the <br /> confirmation analyses by Method 8260, the preferred and more reliable method for MTBE <br /> analysis, were reported non-detect. All groundwater samples analyzed for MTBE have been <br /> reported as non-detect by Method 8260. MTBE is not confirmed to exist at this site. <br /> 1,2-DCA is a contaminant of concern at this site, reported in groundwater at concentrations <br /> up to 970 micrograms per liter (Ng/1). This chemical may have been used as an industrial <br /> solvent, but there is no documentation of its use at this site. 1,2-DCA was added to leaded <br /> gasoline, to prevent engine fouling due to formation of solid lead deposits, during the period <br /> of Texaco's operation of a service station at this site. Additionally, detections of total <br /> petroleum hydrocarbons as gasoline, toluene, ethyl benzene and xylenes have been <br /> reported in both soil and groundwater samples collected at this site. All these contaminants <br /> support that the contamination is from an unauthorized release of gasoline from the <br /> underground storage tanks operated by Texaco at this site. <br />