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advanced, sampled, and backfilled according to the procedures given in Appendix B, utilizing <br /> the Geoprobe direct-push method. Soil samples will be collected for PHC analysis according <br /> to procedures given in Appendix C. Groundwater samples will be collected for PHC analysis <br /> according to procedures given in Appendix D. <br /> Collected soil samples will be field-screened using procedures presented in Appendix C. Field <br /> screening procedures include examination of soil for lithologic character, odor, unusual <br /> staining, and detection of organic vapors (using a photoionization detector). After completion <br /> of soil sampling, the borehole will be backfilled using a sand-cement slurry containing five <br /> percent bentonite as described in Appendix B. <br /> Unused soil samples from the boring and rinsate from decontamination of probe equipment will <br /> be containerized in U. S. Department of Transportation approved 55-gallon drums. These <br /> drums will be properly sealed and labeled, and will be secured within a fenced area of the <br /> Port's property. Recommendations will be provided in the technical report for appropriate <br /> disposal of these drums in a timely manner, based on the findings of this characterization work. <br /> 3.2 LABORATORY TESTING <br /> The soil and groundwater samples will be submitted under chain-of-custody procedures to BSK <br /> Analytical Laboratories, a California DHS-certified laboratory for PHC analyses. Samples will <br /> be analyzed for BTEX, TPHg, and MTBE using EPA methods 802018015; and for total lead <br /> using EPA method 200.8. If MTBE is detected in a sample using EPA method 8020, that <br /> sample will be run for oxygenates utilizing EPA method 8260. <br /> 3.3 TECH1vICAL REPORT <br /> Upon completion of the field investigation and laboratory testing, a Site Investigation and <br /> Evaluation report will be prepared summarizing results and findings, following Tri-Regional <br /> Board Staff Recommendations (Central Valley Regional Water Quality Control Board, 1991). <br /> The data obtained during this investigation will be evaluated along with the historical data <br /> collected from the site to evaluate the lateral and vertical extent of PHCs beneath the site. <br /> Based on these findings, appropriate actions will be recommended. This report will also include <br /> a figure depicting the site location and existing features, a geologic cross section depicting <br /> PHC-impacted areas and the depth to groundwater, tabulated analytical results, and copies of <br /> all permits obtained for the work. <br /> 6 98117►s USTU11v.wrw <br />