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ENVIRONMENTAL HEALTH DEPARTMENT <br /> pU11y <br /> SAN JOAQUIN COUNTY Unit Supervisors k <br /> Donna KDirecatorR.E.H.S. 304 East Weber Avenue, Third Floor <br /> v l ` Carl Bor an,R.E.H.S. <br /> Mike Huggins,R.E.H.S.,R.D.I. <br /> Al Olsen,R.E.H.S. Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> 04C1FO.R��Q Program Manager Telephone: (209) 468-3420 - Margaret Lagorio,R.E.H.S. <br /> Laurie A.Cotulla,R.E.H.S. <br /> Program Manager Fax: (209) 464-0138 Robert McClellon,R.E.H.S. <br /> Mark Barcellos,R.E.H.S. <br /> JAMES GIOTTONINI <br /> PUBLIC WORKS DIRECTOR OCT 12002 <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 October 10,2002,at the office of San Joaquin County Environmental Health Department(EHD). <br /> Attending the meeting were Sharla Hardy and you representing City of Stockton(COS),William Little representing r <br /> Advanced GeoEnvironmental,Inc.(AGE),Jeanne Homsey representing ATC Associates(ATC),and Margaret Lagorio, <br /> Nuel C.Henderson,and Jeff Wong representing EHD. The following is a summary of the site discussions at the meeting. <br /> Fontana Drive at Smith Canal <br /> EI-ID received Second Quarter 2002 Site Status Report dated October 7,2002 and Third Quarter 2002 Site Status <br /> Report dated October 9,2002 prepared by ATC at the meeting. A new cross section was included in the reports <br /> as requested by EHD. One more quarter of sampling is scheduled for January 2,2003. <br /> 110 W.Sonora <br /> Currently the vapor extraction system for the northern area of contamination at the site is off line. AGE stated <br /> the concentration of the contamination in the upper water-bearing zone has declined,but the contamination in <br /> the lower water-bearing zone remained unchanged. AGE has submitted a proposal for ozone sparging system to <br /> augment the existing vapor extraction/air sparging remediation system. <br /> 340 yards of contaminated soil has been excavated and removed from the southern area of contamination at the <br /> site. AGE stated analytical results of the soil samples collected from the southern sidewall of the excavation <br /> indicated the presence of motor oil. EHD has not received the report of the excavation area to date. AGE <br /> stated the report and proposal for additional work to characterize the extent of the remaining contamination <br /> would be submitted to EHD in the near future. { <br /> f <br /> 1740 Houston t <br /> EHD received First and SerondQuarters 2002Quarter:4 Report dated October 8,2002 prepared by AGE at the <br /> meeting. The report is missing two of the three contamination contour maps,so they will be submitted in the <br /> near future. The report did not include analytical results of the third quarter sampling event. AGE stated <br /> analytical results of the groundwater samples collected from Monitoring Well#9(MW-9) for the third quarter <br /> were 58µg/1 of the methyl tert butyl ether(MTBE). Previous groundwater samples from MW9 were non detect <br /> for MTBE. AGE stated since MW-9 was screened from 70 feet to 75 feet below surface grade(bsg),the MTBE <br /> plume extends to 70 feet below surface grade. One additional round of quarterly sampling is scheduled to be <br /> conducted in December 2002. <br /> A meeting with the City of Stockton to discuss the status of their sites at that time is scheduled for 10:00 a.m.on March 6, <br /> 2003,at the offices of EHD. <br /> Donna Heran,REHS,Director <br /> Environmental Health Department 1 <br /> Margare�'rve� <br /> ising REHS <br /> Site Mitigation Unit <br /> c: CVRWQCB-Marty Hartzell <br /> AGE-Bill Little <br /> ATC-Jeanne Homsey <br /> I <br />