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PUBLIC HeALTH SS <br /> �o.•.ice.co <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officers <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 0 <br /> 2091468-3420 FILE u r i <br /> a JAMES GIOTTONINI <br /> PUBLIC WORKS DIRECTOR SEP 2 11999 <br /> CITY OF STOCKTON <br /> 425 N EL DORADO <br /> STOCKTON CA 95202 <br /> !k RE: City of Stockton sites in the Local Qversight.'Program <br /> � F <br /> A meeting was held on September 13, 1999, at the+office of San Joaquin County <br /> Public Health Services, Environmental Health Division (PHSIEHD). <br /> Representatives from the City of Stockton were you and John Fukomoto. <br /> PHS/EHD representatives were Margaret Lagorio, Lori Duncan and Jeff Wong. <br /> The following is a summary of the site discussions and follow up comments by <br /> PHS/EHD. <br /> Fontana Drive at Smith Canal <br /> i A pump test was performed on monitoring well 4 to evaluate whether free <br /> ' product could be drawn into the well or if groundwater could be lowered <br /> by pumping from this well. It was discussedithat three push point borings <br /> with soil sample collection would be perforrri'ed about 15 feet from this <br /> i well. The information can be used in preparing a mass balance <br /> calculation of the contamination remaining in place and evaluation of <br /> excavation as a remedial alternative. <br /> 110 W. Sonora <br /> r <br /> The air sparge/vapor extraction test was performed. There was <br /> discussion about an apparent preferential pathway observed during the air <br /> sparge test and that remediation of MTBE may not be effective using this <br /> { alternative. Levels of MTBE are low compa'ed to'the other gasoline <br /> constituents evidenced at this site so this should be considered when <br /> evaluating remedial alternatives. A report of the air spargelvapor <br /> extraction test is to be submitted to PHSIEHD. A Corrective Action Plan <br /> F will be prepared. <br /> 3 <br /> d <br /> i <br /> A Division of San Joaquin County Health Care Services <br /> l <br />