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08 12 $707 05°1 KAPEEAL i AN ENG ( � ' 2004 <br /> FEI-PBS-0810 <br /> September 15, 1988 <br /> Page 3 <br /> 5. Samples will be collected with a California modified <br /> split-spoon sampler with 2" by 4" brass liners. The <br /> sampler will be advanced ahead of the drilling augers <br /> at designated depths by dropping a 140 pound hammer 30 <br /> inches. Blow counts will be recorded. The samples <br /> will be removed from the sampler, retained in the brass <br /> liners, and will be sealed with aluminum foil, plastic <br /> caps and tape, and will be labeled and stored on ice <br /> for delivery to a state certified laboratory. <br /> 6. Pinalized baring logs will be prepared from field logs <br /> and will be submitted to the San Joaquin County <br /> Department of Health and the to Regional Water Quality <br /> Control Board (RWQCB) . <br /> 7. After groundwater has been intercepted, drilling will <br /> be terminated. One water sample will be collected from <br /> each boring with a clean Teflon bailer. The samples <br /> will be decanted into clean VOA vials wkth Teflon-lined <br /> screw cads and will be labeled and stored on ice for <br /> delivery to a state certified laboratory for analyses. <br /> S. After sampling is complete, the boreholes will be <br /> backfilled to the surface with a cement-sand slurry. <br /> IV. RESULTS <br /> A. Laboratory Analyses: <br /> I. Either Sequoia Analytical Laboratory of Redwood City or <br /> Mobile Chem Labs of San Carlos, both state certified, <br /> will be used. <br /> 2* soil and water samples will be analyzed for total <br /> petroleum hydrocarbon (TPH) as gasoline and as diesel, <br /> benzene, toluene, xylene and ethylbenzene (BTXE) using <br /> EPA methods 5030, 5010, 8015, 8020 or 602. <br /> 3- Analytical ]results will- _be presented...-in....tabular....farm,--. <br /> showing sample. location and . depth, analytical results <br /> and detection limits. <br /> B. Tnt c!3Mretation of -Results: <br /> The analytical results will be used to generally delineate <br /> the vertical and lateral extent of any possible contaminants <br /> in the soil and groundwater. A cross sectional profile will <br /> be constructed showing the subsurface soils, groundwater <br /> depth and known extent. of contaminants. <br />