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PUBLIC HEALTH SERVICIL,S PC' <br /> SAN JOAQUIN COUNTY 2.. <br /> Q: a <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor Stockton, CA 95202 q�,FORN` <br /> 209/468-3420Ur <br /> F <br /> L � k f <br /> JAMES GIOTTONINI <br /> PUBLIC WORKS DIRECTOR SEP 2 1 .1999 <br /> CITY OF STOCKTON <br /> 425 N EL DORADO <br /> STOCKTON CA 95202 <br /> RE: City of Stockton sites in the Local Oversight Program <br /> A meeting was held on September 13, 1999, at the office of San Joaquin County <br /> Public Health Services, Environmental Health Division (PHS/EHD). <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 /> 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 discussed that three push point borings <br /> with soil sample collection would be performed about 15 feet from this <br /> 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 /> 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 compared 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 sparge/vapor <br /> extraction test is to be submitted to PHS/EHD. .A Corrective Action Plan <br /> will be prepared. <br /> A Division of San Joaquin County Health Care Services <br />