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6.7 Tabulated results of all sampling and analysis; Detection limits for <br /> confirmation sampling; Lead analyses <br /> No lead analyses of soil samples have been conducted. <br /> 6.8 Concentration contours of contaminants found and those remaining in soil <br /> and groundwater, both on-and off site; <br /> Lateral extent of soil contamination: Please see Figure12 and Appendix 5. <br /> Vertical extent of soil contamination: Please see Figure 13 and Appendix 4 <br /> Lateral extent of groundwater contamination Please see Figure 14 <br /> Vertical extent of groundwater contamination Please see updated Figures 13, 20, 21 and <br /> 22. Lowest identified base of groundwater plume is -60.0 feet msl. <br /> 6.9 Zone of influence calculated and assumptions used for subsurface <br /> remediation system and the zone of capture attained for the soil and <br /> groundwater remediation system. <br /> Not Applicable <br /> 6.10 Reports/information <br /> Unauthorized Release Form: N/A <br /> Quarterly Monitoring Reports: See Tables 6, 7 and 8 <br /> Problem Assessment Report: Upgradient(2006) <br /> Final Remediation Plan: N/A <br /> Well and boring logs: See Appendix 3 <br /> All documents, including the certified fee titleholder notification letter are on file. <br /> The key investigation reports associated with the site are: <br /> Upgradient Environmental Consultants, 1996c, Problem Assessment Report, <br /> Gillies Trucking Site, 3931 Newton Road, Stockton, California: unpublished <br /> technical report on file at San Joaquin County Public Health Services <br /> Environmental Health Department, 17 p. <br /> GHWCMCms=Sw ary ,dNFAR08202oia.wpd 45 <br />