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San Joaquin County DIRECTOR <br /> Donna Heran, REHS <br /> Environmental Health Department <br /> , .CO f" ASSISTANT DIRECTOR <br /> Z4 1W 600 East Main Street Laurie Cotulla, REHS <br /> Stockton , California 95202-3029 PROGRAM COORDINATORS <br /> _ Carl Borgman, REHS <br /> c . . , , . . p Mike Huggins, REHS, RDI <br /> O R �` 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 /> Kasey Fe REHS <br /> Foppiano Investments [JUL 01 <br /> Ernest Foppiano <br /> 5313 Knox Drive <br /> Linden , CA 95236 <br /> Subject: Stockton City Taxi Service Site Code : 1117 <br /> 2085 Fremont Street <br /> Stockton, CA 95205 <br /> San Joaquin County Environmental Health Department (EHD) has reviewed Pilot Testing Work Plan <br /> (Work Plan) dated May 8, 2008, submitted on your behalf by ATC Associates Inc. (ATC) and has the <br /> following comments . <br /> In the Work Plan ATC proposes the installation of four soil vapor extraction (SVE) wells, six air sparge <br /> (AS) points, the collection of soil and groundwater samples to conduct an ozone infusion bench scale <br /> test and performance of both SVE and AS pilot tests . <br /> The EHD approves the proposal to conduct an SVE pilot test. Proposed locations for the SVE wells <br /> target the areas of known soil contamination and are appropriate for conducting a pilot test. Samples <br /> collected during the installation of the SVE wells will be used, along with groundwater samples <br /> collected from onsite wells, to conduct an ozone bench scale test. <br /> The EHD does not approve the air sparge/ozone infusion test as described in the Work Plan . In their <br /> Feasibility Study dated October 1 , 2007, ATC evaluated groundwater extraction and ozone sparging <br /> for remediation of the groundwater contamination at your site; they recommended conducting a pilot <br /> test for ozone sparging. They did not consider, evaluate or recommend air sparging. Prior to <br /> installation of ozone sparge points, the bench scale test should be completed and evaluated. <br /> Please proceed with submittal of a well permit application for installation of the SVE wells, along with <br /> the required $89 .00 permit fee and $294.00 permit inspection fee, and with scheduling the approved <br /> work . The deadline for installation of the proposed SVE wells is September 30 , 2008, and for <br /> completion of the SVE pilot test is October 30, 2008. Please note that effective August 1 , 2008 the <br /> EHD hourly rate is increasing to $ 105.00. If the permit is submitted after this date the permit <br /> inspection fee will be $315. 00. <br /> If you have any questions please call Lori Duncan at (209) 468-0337. <br /> Sincerely, <br /> Lori Duncan , REHS Nuel C. Henderson , Jr. , PG <br /> Senior Registered Environmental Health Specialist Professional Geologist <br /> c: James Barton, PG , CVRWQCB, 11020 Sun Center Drive #200, Rancho Cordova, CA 95670 <br /> Jeanne Homsey, PE , ATC, 1117 Lone Palm Avenue Suite B, Modesto CA 95351 <br />