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FILE COPY <br /> PUBLIC HEALTH SERVICIS <br /> SAN JOAQUIN COUNTY . <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 2091468-3420 <br /> MEL BOKIDES PETROLEUM APR 2 6 2000 <br /> 265 CANTERBURY DR <br /> STOCKTON CA 95207-5807 <br /> Re: Mel Bokides Petroleum Site Code: 1200 <br /> 2191 Navy Dr. <br /> Stockton, CA 95206 <br /> San Joaquin County Public Health Services Environmental Health Division (PHSIEHD) <br /> has reviewed the Preliminary Investigation &Evaluation Report dated April 18, 2000 <br /> prepared by Advanced Geo Environmental, Inc. for the above referenced site. Soil and <br /> groundwater samples collected at this site evidence petroleum contamination. Further site <br /> investigation is necessary to evaluate the groundwater condition and the vertical and <br /> lateral definition of contamination at this site. <br /> The deepest soil sample collected at 15 feet below surface grade (bsg) in P3 evidenced <br /> EDB at 6.2 parts per billion (ppb), MTBE at 70 ppb and TBA at 150 ppb. A soil sample <br /> collected from 15 feet bsg in P5 evidenced MTBE at 170 ppb. The vertical extent of <br /> Oxygenate contamination should be determined. A deep boring(s) below 15 feet bsg <br /> should be constructed near boring locations P3 and P5. Soil samples should be collected <br /> every 5 feet, below 15 feet bsg, until two consecutive soil samples are non detectable for <br /> contaminants. <br /> A work plan to further investigate the lateral and vertical extent of soil and groundwater <br /> contamination at this site should be submitted to PHSIEHD by June 26, 2000. <br /> Construct Monitoring Wells (MWs) at the site to evaluate the groundwater conditions and <br /> to establish the groundwater gradient. MWs should be screened at an interval <br /> representative of the affected groundwater. Groundwater samples should be analyzed <br /> quarterly for Total Petroleum Hydrocarbons (TPH) as gasoline, TPH as diesel by EPA <br /> Method 8015, Benzene, Toluene, Ethylbenzene and Xylene by EPA Method 8020 and <br /> Oxygenates, EDB, ethanol , methanol, and 1,2-DCA, by EPA Method 8260B. Some <br /> laboratories can run a complete suite of petroleum constituents and fuel additives using <br /> EPA Method 8260B, thereby saving considerable cost. Quarterly monitoring should <br /> continue until further direction from PHSIEHD. <br /> Conduct a complete well survey of domestic,municipal, agricultural, industrial and any <br /> other wells within a 2,000-foot radius of this site. Contact the Department of Water <br /> Resources, municipal water suppliers and nearby industries for well information. <br /> Perform a physical search of the area to identify any wells. Show the locations of all <br /> A Division of San Joaquin County Health Care Services f <br />