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� r <br /> PUBLIC HEALTH SERVICES O.A4u�N•. <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION `°: X <br /> Karen Furst, M.D., M.P.H., Health Officer `f <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> VAN DE POL ENTERPRISES <br /> PO BOX 1107 <br /> STOCKTON CA 95201 <br /> RE: Van De Pol Enterprises DEC 0 3 1999 <br /> 3230 West Lane <br /> Stockton CA 95204 <br /> San Joaquin Public Health Services Environmental Health Division (PHS/EHD) has <br /> reviewed the Preliminary Investigation and Evaluation Report (PIER) dated November <br /> 11, 1999 prepared by Advanced GeoEnvironmental, Inc., for the above referenced site. <br /> Contamination was evidenced in soils at the site to a depth of 35 feet below surface grade <br /> (bsg). The potential for groundwater contamination at this site is significant. PHS/EHD <br /> agrees with the PIER recommendations for further investigation of contamination at the <br /> above site. <br /> Soil samples should be collected below 35 feet bsg until two consecutive five foot <br /> samples indicate non detectable concentrations of contaminants. Groundwater samples <br /> should also be collected. All samples should be analyzed for Benzene, Toluene, Xylene <br /> and Ethylbenzene, using EPA Method 8020, Total Petroleum Hydrocarbon as gas and <br /> Total Petroleum Hydrocarbon as diesel using EPA Method 8015m and Oxygenates using <br /> EPA method 8260. If contamination is evidenced in groundwater a minimum of three <br /> groundwater monitoring wells should be installed at this site. A sensitive receptor survey <br /> o should also be conducted. <br /> A Work Plan to determine the lateral and vertical extent of contamination and to evaluate <br /> groundwater quality at this site should be submitted to PHS/EHD by February 1 2000 <br /> Please contact Carol Oz, Senior REHS, at (209) 468-3440 if you have questions <br /> regarding this letter. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> C � <br /> 67;_ <br /> Carol Oz, Senior REHS Margaret Lagorio, REHS <br /> Site Mitigation Unit IV Supervisor <br /> cc: Marty Hartzell-CVRWQCB <br /> Timothy Cuellar-AGE <br /> A Division of San Joaquin County Health Care Services <br />