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6 0 <br /> San Joaquin County DIRECTOR <br /> Environmental Health Department Donna Heran,REHS <br /> M ASSISTANT DIRECTOR <br /> r.' 600 East Main Street Laurie Cotulla, REHS <br /> x Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> 111Y.i.v.. ..• Carl Borgman,REHS <br /> q <br /> Website: ov.or /ehd Mike Huggins, REHS, RDI <br /> ebste: www.s <br /> O �rFoitN P 19 9 Margaret Lagorio, REHS <br /> Phone: (209) 468-3420 Robert McClellan, REHS <br /> Fax: (209) 464-0138 Jeff Carruesco, REHS,RDI <br /> Kasey Foley,REHS <br /> Ernest P. Giannecchini JAN 3 0 2008 <br /> Ernie's General Store <br /> 4407 East Waterloo Road <br /> Stockton CA 95215 <br /> Subject: Ernie's General Store Site Code: 0888 <br /> 4407 E Waterloo Road <br /> Stockton CA 95215 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed Quarterly <br /> Report— Fourth Quarter 2007(Report) dated January 18, 2008, submitted on your behalf by <br /> Advanced GeoEnvironmental, Inc. (AGE) and has the following comments. <br /> The Report documents a routine quarterly groundwater monitoring and sampling event <br /> conducted at your site in October 2007. Currently five groundwater monitoring wells are <br /> monitored and sampled on a quarterly basis as part of the ongoing site investigation. In the <br /> Report AGE recommends, based on a historical lack of reported contaminants in the well, <br /> reducing the sampling of MW-1 to an annual schedule; and reduction of the analytical suite in <br /> all the monitoring wells. AGE recommends analysis for methyl tertiary butyl ether (MtBE) <br /> and 1,2-dichloroethane (1,2-DCA) in samples collected from MW-1, MW-2 and MW-5; and <br /> analysis for MtBE, 1,2-DCA, total petroleum hydrocarbons as gasoline (TPHg) and tertiary <br /> amyl methyl ether (TAME) in samples collected from MW-3 and MW4. <br /> The EHD approves the proposed recommendations with the condition that wells MW-3 and <br /> MW-4 also continue to be analyzed for tertiary butyl alcohol (TBA). If you have any questions <br /> please call Lori Duncan at (209) 468-0337. <br /> Sincerely, <br /> Lori Duncan, Senior REHS Nuel C. Henderson, Jr., PG <br /> Registered Environmental Health Specialist Engineering Geologist <br /> cc: James Barton, CVRWQCB, 11020 Sun Center Drive, #200, Rancho Cordova CA 95670 <br /> Ally Colavita, AGE, 837 Shaw Road, Stockton CA 95215 <br />