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FILE Cori <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> CIFORer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> APR 2 4 2000 <br /> CHARLES JACOBS <br /> TERMINOUS MARKET <br /> PO BOX 8820 <br /> STOCKTON CA 95208 <br /> RE: Charles Jacobs Site Code: 1905 <br /> 13889 W Hwy 12 <br /> Lodi,CA 95240 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has reviewed the <br /> Preliminary Investigation & Evaluation Report dated April 17, 2000 prepared by Advanced <br /> GeoEnvironmental, Inc. for the above referenced site. Soil and groundwater samples collected at this site <br /> evidence petroleum contamination. Further site investigation is necessary to evaluate the groundwater <br /> condition and the vertical and lateral definition of contamination at this site. <br /> PHS/EHD agrees with the recommendations in the above referenced report. A work plan to further <br /> investigate the groundwater at this site and determine the lateral and vertical extent of contamination should <br /> be submitted to PHS/EHD by June 26, 2000. <br /> A minimum of three Monitoring Wells(MWs) should be constructed at the site to evaluate the groundwater <br /> conditions and to establish the groundwater gradient. MWs should be screened at an interval representative <br /> of the affected groundwater. Groundwater samples should be analyzed quarterly for Total Petroleum <br /> Hydrocarbons as gasoline by EPA Method 8015, Benzene, Toluene, Ethylbenzene and Xylene by EPA <br /> Method 8020 and Oxygenates by EPA Method 8260. <br /> Conduct a complete well survey of domestic, municipal,agricultural, industrial and any other wells within a <br /> 2,000400t radius of this site. Contact the Department of Water Resources, municipal water suppliers and <br /> nearby industries for well information. Perform a physical search of the area to identify any wells. Show <br /> the locations of all wells and submit any known construction details of the wells. Identify all sources of <br /> information in the well survey report. On a trap clearly depict each well location with respect to the above <br /> referenced site location. A survey should also be conducted to locate any other potential conduits. <br /> PHS/EHD is aware that ditches of water are being used as water sources for parcels in this area. All ditches <br /> should be identified as potential conduits and receptors. Also identify all septic systems on a map. Discuss <br /> conclusions regarding public and environmental health risks as they relate to the identified wells (influence <br /> of pumping),drinking water,conduits/receptors of the contaminant plume. <br /> Contact Carol Oz, Senior REHS,if you have questions regarding this letter. <br /> Donna Heran,REHS,Director <br /> Environmental Health Division <br /> Carol O�H� Margare agorio,REHS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> cc: Marty Hartzell-CVRWQCB <br /> Brian Millman-AGE <br /> A Division of San Joaquin County Health Care Services <br />