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PUBLIC; HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DMSION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> •���F p.R a\ <br /> 304 East Weber Avenue,Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> NOV 0 5 2001 <br /> THRIFTY OIL COMPANY <br /> RAY FRIEDRICHSEN / CHRIS PANAITESCU <br /> 13539 E FOSTER RD <br /> SANTA FE SPRINGS CA 90670-9876 <br /> RE: Thrifty Sites, #171 & #172 SITE CODE: 1229 & 1227 <br /> 1250 N. Wilson & 7647 Pacific Ave. <br /> Stockton, CA. <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS-EHD) <br /> has reviewed the "3rd Quarter 2001, Status Reports" dated October 30, 2001 for both of <br /> the Thrifty Oil Company (TOC) sites noted above and has the following comments. <br /> Conclusions discussed in TOC #172 (Pacific Ave) status report included a request to <br /> modify the oxygenate analyses from quarterly to annually. The sampling protocol <br /> modification for this site is approved. Groundwater samples from all monitoring and <br /> `wet' vapor wells are to have all seven (7) oxygenates analyses reported. This <br /> modification is to start during the First Quarter, 2002 and continue during every first <br /> quarter thereafter. <br /> Conclusions discussed in TOC #171 (Wilson Way) status report requested approval in <br /> conducting an aquifer pump test due to rising/elevated levels of MtBE in the <br /> groundwater. The pump test is approved as written. <br /> You may contact Michael Infurna at (209) 468-3454 should you have any questions and <br /> to schedule an appointment for the sampling events and the pump test. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> 0 <br /> Michael J. Infurna r., Se or REHS Margar t Lagorio, EHS <br /> LOP / Site Mitigation Unit IV Supervisor <br /> MI/ <br /> c: CVRWQCB — Marty Hartzell, Sacramento. <br /> c: SWRCB/CUF — Mark Owens, Sacramento. <br /> A Division of San Joaquin County Health Care Services <br />