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Lu Woodward-Clyde <br /> L <br /> 4.2 GROUNDWATER SAMPLING f <br /> f No detectable concentrations of analytes tested were found in a grab groundwater sample' <br /> Lr collected at the KJAX site. Non-detectable concentrations of TPH as, gasoline, TPH as <br /> diesel, and BTEX were reported for sample MW-7 collected from soil boring B-7 on June <br /> 1, 1995 (Table 3). Petroleum hydrocarbon constituents have not impacted the groundwater. <br /> below the KJAX site in Stockton, California. <br /> 4.3 RECOMMENDATIONS kk <br /> i I <br /> Woodward-Clyde Federal Services recommends no further site characterization activities`: <br /> Lconducted at the KJAX site. However, WCFS recommends re-excavating the existing <br /> backfilled UST excavation to remove the polyethylene sheeting liner, excavate to <br /> approximately 22 feet bgs along the north-northwest walls of the former UST excavation, <br /> and backfill the excavation without a polyethylene liner. This recommended activity will <br /> secure the top 12 feet of soil boring B-3/B-3A which remains open at the present time. ` <br /> L <br /> i <br /> Lkk <br /> L <br /> EI <br /> E <br /> L <br /> 4fh <br /> I <br /> L r <br /> E <br /> i1 <br /> L <br /> I <br /> L <br /> 1 <br /> 1°j <br /> L t <br /> f <br /> L <br /> `f <br /> ' 8054/FEMAIMAXPIERAPT/8-24-95 SAC 4-2 <br /> LI <br /> i <br />