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Ck, <br /> PUBLIC HEALTH SERVICES oP.. �... <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION 5 ` <br /> Karen Furst, M.D., M.P.H., Health Officer ' <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 `'Foie <br /> 209/468-3420 <br /> PAUL SOUVA AUG 15 2000 <br /> VALLEY WHOLESALE DRUG CO. , INC. <br /> 1401 FREMONT ST W <br /> STOCKTON CA 95203 <br /> RE: Valley Wholesale Drug Co.,Inc. Site Code: 1782 <br /> 1401 Fremont St W <br /> Stockton CA 95203 <br /> The work as proposed in WorkPlan forP&da g Tuo Gmtm*uterMavimirlg Wells dated April 28, <br /> 2000 prepared by Wm.J. Hunter&Associates (Hunter) was implemented on August 15, <br /> 2000 at the above referenced site. Based on field observation and data from a photo- <br /> ionization detector(PID),San Joaquin County Public Health Services, Environmental <br /> Health Division (T'HS/EHD) agreed with the Hunter's assessment that the contamination in <br /> groundwater and possibly also in the soil reaches at least as far north as Monitoring Well#5 <br /> (MW-5),which is located at approximately 102 feet north of MW-2, and therefore additional <br /> MW would be needed to determine the lateral extent of the groundwater contamination to <br /> the north, and to generate inferred isoconcentration lines of the plume required for the <br /> calculation of the contamination mass balance remaining. Installation of an additional <br /> monitoring well on the same day results in considerable cost savings compared to re- <br /> mobilization to install a well at a later date. As a result,PHS/EHD directed an additional <br /> monitoring well be installed to the north of MW-5. <br /> If you have any questions,please feel free to contact Jeffrey Wong at (209) 468-0335. <br /> Donna Heran,RENS,Directors <br /> Environmental Health Division <br /> janj <br /> G <br /> Jeffrey Wong, REDS Margaret Lagorio,RENS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> C. RWQCB, Central Valley Region- Marty Hartzell <br /> c: SWRCB,UST Cleanup Fund Program-- Sandy Gill <br /> C* Wrr J. Hunter&Associates -Bill Hunter R F G F 1111=I� <br /> AUG 16 2040 <br /> riuty AOS <br /> A Division of San Joaquin County Health Care Services <br />