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r <br /> sole <br /> San Joaquin County DIRECTOR <br /> PQ u N Donna Heran, REHS <br /> Environmental Health Department ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla, REHS <br /> s Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> • �� Carl Borgman,RENS <br /> 0-7. �P Website: www.s /ehd Mike Huggins, REHS,RDI <br /> �!F o�� �g ov.or� Margaret Lagorio,REHS <br /> Phone: (209)468-3420 Robert McClellan, REHS <br /> Fax: (209) 464-0138 Jeff Carruesco,REHS,RDI <br /> FEB 1 9 2008 Kasey Foley, REHS <br /> Ray Baglietto & Frank Rauzi <br /> Tuleburg Warehouse Ab Nawar <br /> 301 South Aurora Street 8200 North Highway 99 <br /> Stockton CA 95203 Stockton CA 95212 <br /> Subject: Speedy Food Mart SITE CODE: 1612 <br /> 8200 N. Hwy. 99 <br /> Stockton CA 95212 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed Quarterly <br /> Groundwater Monitoring and Treatment System Operational Report October through <br /> December 2007(Report), dated February 6, 2008, submitted on your behalf by Ground Zero <br /> Analysis, Inc., (Ground Zero) and has the following comments. <br /> The subject site is a contaminated former underground storage tank (UST) site. <br /> Investigation of an unauthorized release of petroleum hydrocarbons from the UST's began in <br /> 1999. Quarterly groundwater monitoring and sampling has been conducted since that time; <br /> remediation of the groundwater began in November 2003 and of the soil in August 2005. <br /> Current groundwater analytical results indicate that operation of the remediation systems has <br /> reduced the concentrations of contaminants in the groundwater. <br /> In light of the declining concentration trends in the reported groundwater analytical results, <br /> and in order to help conserve costs, the EHD recommends modifications to the sampling and <br /> analytical regime as follows: Analysis of samples from monitoring wells EW-1, VW-1 (when <br /> there is enough water in it to sample) and MW-13C should continue on a quarterly basis for <br /> all constituents currently being analyzed for. Analysis of samples from monitoring wells <br /> MW-3, MW-4, MW-5, MW-6, MW-12, and EW-2 should continue on a quarterly basis for <br /> methyl tertiary butyl ether (MtBE) only. The remaining wells, MW-7, MW-8, MW-913, MW-10, <br /> MW-11, MW-14, MW-15, MW-16, MW-176, MW-18C and MW-19D, should be sampled <br /> annually and analyzed for MtBE only. <br /> If you have any questions please call Lori Duncan at (209) 468-0337. <br /> Sincerely, <br /> Lori Duncan, REHS Margare agorio, RVS <br /> Senior Registered Environmental Health Specialist Program Coordinator <br /> c: James Barton, CVRWQCB, 11020 Sun Center Drive #200, Rancho Cordova, CA 95670 <br /> Eric Price, Ground Zero Analysis, 1714 Main Street, Escalon CA 95320 <br />