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ENVIROMETRIX if <br /> a1 <br /> r Grupe Development Company May 16, 1996 <br /> Mr. Shane Hart 3' Page 4 of 4 <br /> i� <br /> Laboratory results for the groundwater sample Water-1 reported non-detectable concentrations <br /> for all analytes in the EPA 8080 series. Copies of the laboratory report and chain-of-custody <br /> forms are attached. <br /> 3 <br /> - <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> i <br /> Based on the results of this investigation, EMC concludes that soil containing elevated levels of <br /> DDT and related compounds, above state action limits, have been remediated. In addition, no <br /> elevated levels of pesticides were detected in the groundwater sample. <br /> 3 <br /> EMC recommends that no additional excavation or remediation activities are needed related to <br /> the DDT contamination in the area of the Quonset Hut. Therefore;' EMC requests that the <br /> County grant closure for the site. in addition, excavated soil stockpiled onsite may be <br /> transported to an appropriate disposal facility. <br /> Yours very truly, <br /> { <br /> ENVIROMETRIX CORPORATION !j <br /> Ij <br /> Norman T. Shopay <br /> Principal II <br /> Attachments: Plate 1 Site Location Map <br /> Plate 2 Site Vicinity Map <br /> Plate 3 Site Topographical Map <br /> Plate 4 Site Plan <br /> Plate 5 Clearance Sample Locations <br /> Laboratory Reports and Crain-of-Custody Forms <br /> cc: San Joaquin County Public Health Services <br /> Environmental Health Division l <br /> 304 E. Weber Avenue, 3rd Floor <br /> it <br /> Stockton, California 95201 <br /> - Attention: Mr. Michael Infurna, Jr. <br /> IIf i� <br /> 1 <br /> Florsheim Homes <br /> 1701 March Lane, Suite D <br /> Stockton, California 95207 <br /> Attention: Mr. David Florsheim <br /> BCC/bcc/196341 k <br />