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FILE COPY <br /> PUBLIC HPALTH' SERVIGES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION N. <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 2091468-3420 <br /> NICK BOKIDES SEP 2 12000 <br /> MEL BOKIDES PETROLEUM INC <br /> 527. WEST PINE ST <br /> LODI CA 95240 <br /> RE: MEL BOKIDES PETROLEUM <br /> 8203 E HIGHWAY 26 <br /> STOCKTON CA 95206 <br /> San Joaquin County Public Health Services Environmental Health Division(PHS/EHD) has <br /> reviewed the Excavation and Sampling Report dated September 5, 2000 prepared by Advanced <br /> GeoEnvironmentaI for the above referenced site. Petroleum contaminants were detected in soil <br /> samples collected at the site. Further investigation of contamination at this site is necessary. Due <br /> to the fact that methyl-tert-butyl-ether was detected in soils at concentrations as high as 140,000 <br /> parts per billion, the potential for groundwater contamination is significant. Diligent and efficient <br /> site investigation should commence as soon as possible at this site. A work plan to determine the <br /> lateral and vertical extent of soil contamination and to investigate the groundwater at this site <br /> must be submitted to PHS/EHD no later than November 30 2000. <br /> If further investigation reveals groundwater contamination at this site, a minimum of three <br /> monitoring wells should be constructed in order to establish repeatable groundwater sampling <br /> points and groundwater gradient and direction. Quarterly groundwater monitoring should be <br /> initiated after the monitoring wells are installed. Soil and groundwater samples must be analyzed <br /> for total petroleum hydrocarbons as gasoline by EPA Method 8015: benzene, toluene, <br /> ethylbenzene and xylene by EPA Method 8020: oxygenates, 1,2 dichloroethane, ethylene <br /> dibromide, methanol and ethanol by EPA Method 8260. A well receptor survey must also be <br /> conducted if groundwater contamination is verified. <br /> Please contact Carol Oz, Senior REHS, at(209)468-3440 if you have questions regarding this <br /> letter. <br /> Donna Heran,REHS, Director <br /> Environmental Health Division ` <br /> Carol Oz, Senior REHS Dot Lofstrom, RG <br /> LOP/Site Mitigation Unit N Engineering Geologist Unit IV <br /> c: AGE—Bill Little <br /> c: RWQCB, Central Valley Region—Marty Hartzell <br /> A Division of San Joaquin County Health Care Services <br />