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r <br /> San Joaquin Gouvro <br /> c EnvironmenxW Health Lunp� ,iVO: lilf R-A DIRECTOR <br /> — � O Donna Heran, REHS <br /> r te „ 600 East Main Street <br /> Stockton , Gaiifornla 95202-3029 PROGRAM COORDINATORS <br /> '. Robert McClellon, REHS <br /> • Jeff Carruesco, REHS RDI <br /> Website: VWVw.SJgOV.OYg/ehd Kasey Foley, REHS <br /> 4F ° u � Phone: (209) 4683420 LindaTwkatte, REHS <br /> Fax: (209) 464-0138 <br /> June 2, 2011 <br /> Foppiano Investments <br /> Ernest Foppiano <br /> 5313 Knox Drive <br /> Linden , CA 95236 <br /> Subject: Stockton City Taxi Service <br /> 2085 Fremont Street <br /> Stockton, CA 95205 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed Remedial <br /> Action Plan (RAP) dated April 29 , 2011 , submitted on your behalf by ATC Associates Inc. <br /> (ATC), and has the following comments. <br /> The EHD has previously approved a proposal to conduct soil remediation by vapor extraction <br /> (SVE) (see EHD correspondence dated August 3 , 2009) and the installation of three nested <br /> ozone infusion points and a permanent ozone sparging system to be operated concurrently with <br /> the SVE system (see EHD correspondence dated May 6 , 2010). The submitted RAP provides <br /> calculations of target contaminant mass remaining in the sites soil and groundwater, details on <br /> the remedial systems design, operation and maintenance parameters, and site specific cleanup <br /> goals. The SVE system will be monitored in accordance with the requirements of the discharge <br /> permit from the San Joaquin Valley Air Pollution Control District; the ozone infusion system will <br /> be monitored in accordance with the draft Monitoring and Reporting Program that was approved <br /> by the Regional Water Quality Control Board , Central Valley Region (RWQCB). A contingency <br /> plan for potential hexavalent chromium abatement was included in the approved Ozone Pilot <br /> Testing Work Plan dated June 25, 2009. <br /> The EHD approves proceeding with implementation of the proposed SVE and ozone infusion <br /> remediation . Please submit the required San Joaquin County well installation permit and <br /> required fees to install the additional ozone infusion points , and with installation of the remedial <br /> systems , <br /> If you have any questions please contact Lori Duncan at (209) 468-0337, or by email at <br /> Iduncan@sjcehd .com. <br /> Lori Duncan , REHS Nuel C. Henderson , Jr. PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> c: James Barton , CVRWQCB , 11020 Sun Center Drive #200, Rancho Cordova , CA 95670 <br /> Todd Hafner, ATC, 1117 Lone Palm Avenue Suite B, Modesto CA 95351 <br />