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0 0 <br /> San Joaquin County DIRECTOR <br /> o. c Environmental Health Department Donna Heran,REHS <br /> ASSISTANT <br /> DIRECTOR <br /> ii 600 East Main Street Laurie Cotulla, REHS <br /> y Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> +. <br /> • Carl� gman.REHS <br /> HaMike Huggins,RENS, RDI <br /> Website: www.s/gov.org/ehd Margaret Lagorio,REHS <br /> %FOR Phone: (209) 468-3420 Robert McClellon,REHS <br /> Fax: (209) 464-0138 Jeff Carruesco,REHS,RDI <br /> Kasey Foley, REHS <br /> December 2, 2008 <br /> Eric Hetrick <br /> ConocoPhillips <br /> Risk Management & Remediation <br /> 76 Broadway <br /> Sacramento, CA 95818 <br /> Subject: TOSCO/UNOCAL SITE CODE: 1217123 <br /> 4707 Pacific Avenue <br /> Stockton, CA <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the "Quarterly <br /> Status and Remediation Summary Report - Third Quarter 2008" dated October 27, 2008, <br /> prepared by Stantec Consulting Corporation for the above subject site and provides the <br /> following comments. There has been no detection of TBA, Ethanol, EDB, 1,2-DCA, DIPE, <br /> ETBE or TAME in the water samples from the groundwater monitoring wells for this site since <br /> April 2007. Analysis for these chemicals can be discontinued. Water samples from vapor wells <br /> VW4 and VW7 have concentrations of contaminants that remain of concern. The EHD <br /> recommends you consider purging more water from these wells prior to sample collection. <br /> If you have any questions contact me at (209) 468-3449. <br /> Margaret gono, RE S' <br /> Program Coordinator <br /> c: Lee Ignatowicz, Stantec Consulting Corp., 3017 Kilgore Rd., Rancho Cordova, CA, 95670 <br /> Jim Barton, CVRWQCB <br /> Rebecca Seevers, Target Corp., P.O. Box 9456, Minneapolis, MN 55440 <br />