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Lead, Organic lead was not detected in any of the soil or ground water <br /> samples that were analyzed Total lead was detected in all of the soil <br /> samples collected during the Phase I investigation at concentrations <br /> between 3 and 4 mg/kg However, these concentrations are consistent <br /> with background concentrations observed in area soils and in the soils <br /> at Former Tank Site #1, and are well below levels of concern <br /> Therefore, no further testing for total lead in soils was conducted <br /> during the Phase H investigation <br />' Very low concentrations of total lead were also detected in all of the <br /> ground water samples collected during the Phase I investigation in <br />' April 1992 (note that the samples were unfiltered) The ground water <br /> concentrations detected are considered to be the result of naturally- <br /> occurring background levels of total lead in soils <br />' Ethylene Dibromide. EDB was not detected in any of the soil or ground <br /> water samples that were analyzed <br /> Tank Site 3 <br /> The tank at Former Tank Site #3 was uncovered and removed from <br /> the site on August 27, 1991 During the process, representatives from <br /> San Joaquin County, the Stockton Fire Department, Dobbas, and ERM- <br /> West were present The removal activities consisted of tank emptying, <br /> tank inerting, excavation and tank removal, confirmatory sampling, <br /> and backfilling and paving <br /> Confirmation SamFling <br /> After the tank was removed, the soils below the tank were sampled by <br /> ERM-West The sampling was performed according to the guidelines <br /> specified by the San Joaquin County tank removal permit <br />' No petroleum odor was noted during excavation and sampling <br /> Ground water was not encountered in the tank excavation The <br /> samples were tested for TPH as gasoline and diesel, BTEX, EDB, and <br />' total lead <br /> The results of the analyses are summarized and presented in Table 3-3 <br />' No constituents of concern, with the exception of lead, were detected 1n <br /> either soil sample above the detection limits The concentrations of <br /> lead detected in both samples are consistent with background <br /> concentrations of lead in area soils <br /> 3-7 <br /> 1 <br />