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San Joaquin County DIRECTOR <br /> <p U,r N Donna Heran,'RENS <br /> Environmental Health Department ASSISTANT DIRECTOR <br /> 600 East Main Street LauTIeCOtulla, REHS <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> ------ ---- <br /> Cad Borgman, REHS <br /> c . P Mike Huggins. REHS, ROI <br /> ji 6,0 Margaret www.sjgov.org/ehd MargaretLagorio, REHS <br /> Phone: (209) 468-3420 Robert McClellon, REHS <br /> Fax: (209) 4640138 ,teff Carruesco, REHS, RDI <br /> Kasey Foley, REHS <br /> January 2, 2009 <br /> Peter Lenz <br /> 6465 Pacific Avenue <br /> Stockton, CA g5207 <br /> Subject: Howard Lenz Property Site Code: 2182 <br /> 1648 Shaw Road <br /> Stockton, CA 95202 <br /> The San Joaquin County Environmental Health Department (EHD) 'has reviewed Quarterly <br /> Groundwater Monitoring Report — Third Quarter 2008 (Report), dated November 10, 2008, <br /> submitted on your behalf by Advanced GeoEnvironmental, Inc, (AGE) and has the following <br /> comments. <br /> The Report documents routine quarterly groundwater monitoring and sampling activities <br /> completed at your site in August 2008. Analytical results for all wells sampled were reported <br /> as "non-detect". A soil vapor extraction (SVE) remediation system began operation at the <br /> site in January 2006 and was shut down in May 2008 after influent air samples ceased to <br /> have reportable concentrations of petroleum hydrocarbons. A rebound test was conducted in <br /> November 2008 and after an initial detection of contamination in the influent air, was <br /> resampled and reported "non-detect". <br /> Please proceed with submittal of a work plan to install confirmation soil borings to confirm the <br /> effectiveness of the SVE remediation system removal of soil contamination at your site. The <br /> work plan is due for submittal to the EHD no Eater than March 6, 2009. <br /> If you have any questions please call tori Duncan at (209) 468-0337. <br /> ii <br /> Lori Duncan, REHS Nuel C. Henderson, Jr., PG <br /> Registered Environmental Health Specialist Engineering Geologist <br /> c: James Barton, CVRWQCB, 11020 Sun Center Drive Ste. 200, Rancho Cordova, 95670 <br /> Ally Colavita, AGE, 837 Shaw Road, Stockton, CA 95215 <br />