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LTH SERVfCESPUBLIC IEA <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION :. <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street * P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 PCD <br /> GEORGE LECHICH <br /> PO BOX 881 <br /> STOCKTON CA 95201 AN7 0 9 1994 <br /> RE: Valley Showcase <br /> 913 West Fremont Street <br /> SITE CODE: 1114 <br /> Stockton, CA <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has reviewed the First <br /> Quarter 1994 Quarterly monitoring report dated, July 15, 1994, submitted by W.J. Hunter and Associates, for the <br /> above referenced site. <br /> The groundwater contaminant plume appears to exist downgradient of the former tank location. The downgradient <br /> well MW-2 shows contamination. The downgradient extent of the plume has not been defined. PHS/EHD requires <br /> installation of additional wells in order to complete the site characterization. <br /> The results of the laboratory analysis of the soil sample obtained during the tank removal on February 11, 1988 <br /> confirmed the presence of contamination in the tank excavation. Soil contamination was also evidenced during the <br /> installation of MW-2 and the sample results confirmed the contamination. <br /> PHS/EHD concurs with the recommendation in the report to discontinue quarterly sampling of MW-1 and MW-3 <br /> if the next round of groundwater samples from these wells evidence no contamination. PHS/EHD requires quarterly <br /> water level measurements of MW-I and MW-3 to provide data for groundwater contouring. <br /> This report fails to propose the next scope of work. PHS/EHD requires an addendum to this report proposing the <br /> next scope of work within 30 days of the date of this letter. <br /> If you have any questions, contact Steve Sasson at (209) 468-3459. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> StevekSasso , Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> SS:lb <br /> C: CVRWQCB, Underground Storage Wank Unit <br /> c: SWRCB, Underground Storage Tank Program <br /> c: Hunter & Associates <br /> Bill Hunter <br /> 2220 Loma Vista Drive <br /> Sacramento, CA 95825 <br /> A [)i%i.ion or San Joaquin County Health Care Service, <br />