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San Joaquin County DIRECTOR <br /> Donna Heran, RENS <br /> QU.:N Environmental Health Department <br /> p.?•':=-='••C ASSISTANT DIRECTOR <br /> 600 East Main Street Laurie Cotulla,REHS <br /> Stockton, California 95202-3029 PROGRAM COORDINATORS <br /> _ ,•;�. Mike Huggins,REHS, RD! <br /> Margaret Lagorio, REHS <br /> Website: www.sjgov.org/ehd Robert McClellon,REHS <br /> 4 <br /> Cl F 0•0Phone: <br /> r' 209 468-3420 Jeff Carruesco, REHS, RDI <br /> Fax: (209) 464-0138 Kasey Foley, REHS <br /> April 2, 2009 <br /> .Jollyne Toste <br /> Toste Farms Inc. <br /> 2460 Toste Road <br /> Tracy, CA 95376 <br /> Subject: Tracy Marine Sales <br /> 2353 Toste Road <br /> Tracy, CA <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the "Request <br /> for Reduction in Quarterly Monitoring Frequency" (letter) dated March 6, 2009, prepared by <br /> Advanced GeoEnvironmental, Inc. (AGE)for the above subject site. <br /> The EHD approves of limiting ozone injection to wells 01 and 05, near MW7 and limiting <br /> quarterly sampling of monitoring wells to MW7. The EHD discussed the analysis of the water <br /> samples from MW7 with the Central Valley Regional Water Quality Control Board. The <br /> samples must be analyzed for total petroleum hydrocarbons as gasoline (TPH-g) and <br /> MTBE because those are the contaminants that are still being found in the water samples from <br /> MW7. The letter proposed MTBE and TBA, instead of TPH-g and MTBE. Please ensure this <br /> change in analysis is made immediately. Annual sampling of MW4 and MW5 with analysis <br /> limited to MTBE is also approved. <br /> Once it has been determined that the ozone remediation system should be shut down, a new <br /> sampling and analysis proposal must be submitted to and approved by the EHD for the post <br /> quarterly 9 <br /> uarterl monitoring period. <br /> A work plan for a soil gas investigation and/or a soil investigation of current contaminant <br /> concentrations is still required to be submitted to the EHD by May 2, 2009. <br /> If you have any questions contact me at (209) 468-3449 or Frank Girardi and (209) 953-7868. <br /> Margaret Lagorio, REHS <br /> Program Coordinator <br /> Cc: Jim Barton, CVRWQCB <br /> William Little, Advanced GeoEnviron mental, 837 Shaw Rd., Stockton, CA 95215 <br />