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PUBLrC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> N: < <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) Stockton,California 95201 ogct cowa'�o <br /> (209)468-3400 <br /> JOHN MARGOWSKI <br /> ENVIRONMENTAL AFFAIRS MANAGER <br /> WICKLAND OIL COMPANY <br /> P O BOX 13648 <br /> SACRAMENTO CA 95853-4648 MAY 1992 <br /> Re: Former Regal Station #603 Site Code: 1211 <br /> 6425 Pacific Avenue <br /> Stockton CA 95207 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has completed <br /> review and has comments on the following submittals: <br /> WEGE report "Update Status Report #6: July 1991 - January 1992 <br /> WEGE report "Update Status Report #7: February 1992 - March 1992 <br /> Please continue to provide update status report/quarterly reports in a timely manner, 30 days following the <br /> sampling event; this ensures adequate local regulatory oversight. Notify Mary Meays, at the number below, <br /> 48 hours prior to quarterly sampling as site inspections of sampling events are an important aspect of local <br /> regulatory oversight. <br /> Continued postponing of the installation of additional monitoring wells is unacceptable. <br /> Vapor extraction coupled with groundwater extraction, as originally proposed, are effective methods to <br /> control groundwater plume migration, thus providing maximum remediation. <br /> The groundwater contamination plume is not being contained nor has it been properly characterized. <br /> Additional monitoring wells will be necessary to define the boundaries of soil and/or groundwater <br /> contamination. Submit a workplan for this additional investigation by June 30, 1992. <br /> If you have any questions or to schedule a site inspection, please contact Mary Meays, REHS, of my staff <br /> at (209) 468-0337. <br /> Jogi Khan ./D., M.P.H. <br /> Health��f � <br /> ne A Co fila, RE/HS, Program Manager <br /> nvironmental Health Division <br /> LAC/MM:Ib <br /> c: Elizabeth Thayer, CVRWQCB c: Lincoln Properties <br /> c: George Converse, WEGE c: Exxon Corporation <br /> A Divimon of San Jmquin Counry Health Care Semcca <br />