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PUBLI( HEALTH SE CES <br /> SAN JOAQUIN COUNTY ` <br /> ENVIRONMENTAL HEALTH DIVISION ` <br /> Karen Furst, M.D., M.P.H., Health Officer • d.. P.. <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> OCT 3 1 2001 <br /> PHILIP & IRENE HENRY JANET WISECARVER <br /> P O BOX 282 P 0 BOX 332 <br /> FRENCH CAMP CA 95231 FARMINGTON CA 95230 <br /> RE: Countryside Market SITE CODE: 2552 <br /> 10848 E. Copperopolis Rd. <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed "Preliminary Investigation and Evaluation Report" <br /> dated September 29, 2001, prepared by Upgradient Environmental Consultants <br /> for the above referenced site. <br /> Soil contamination is documented to exist to 90 feet below surface grade (bsg) <br /> and groundwater is contaminated. The report conclusion that the vertical limit of <br /> contamination in the soil is approximately 100 feet bsg is not supported by <br /> analytical data. Therefore a work plan to continue to investigate the lateral and <br /> vertical extent of soil and groundwater contamination that includes installation of <br /> a minimum of three monitoring wells should be submitted to PHS/EHD by <br /> December 17, 2001. <br /> All groundwater samples should be analyzed for TPHg by EPA Method 8015M, <br /> for BTEX by EPA Method 8021 B or 826013, and for MtBE, TBA, DIPE, ETBE, <br /> TAME, 1 ,2-DCA, and EDB by EPA Method 8260B. Groundwater samples should <br /> also be analyzed for lead. These samples should be field filtered and analyzed <br /> using EPA Method 7420. A sufficient number of soil samples should also be <br /> analyzed for the above contaminants, <br /> If you have any questions contact me at (209) 468-3449. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Supervising REHS <br /> Unit IV <br /> C: SJCADA — David Irey <br /> CVRWQCB — Marty Hartzell <br /> Upgradient—Vic Cherven <br /> A Division of San Joaquin County Health Care Services <br />