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I - presented in this report were remeasured two days later in the office and therefore, may not represent an accurate measure of actual field concentrations The remaining contents of the middle sleeve was used for descriptive purposes, which were recorded on the log of the borings (Appendix A) Contents of the upper sleeve was regarded as sluff material and was added to the drill cuttings Contaminated drill cuttings were placed in Department of Transportation (DOT)-approved 17-H drums and left at the site in a fenced and locked storage yard Groundwater samples were collected from each boring (with the exception of 137) by advancing the augers 1 to 2 feet past the surface of the groundwater, and inserting a steam-cleaned, stainless steel well point casing through the hollow stem augers Approximately 2 to 3 gallons of water were hand bailed from the well point casing prior to sampling the boring Groundwater was retrieved using the plastic hand bailer, and was then transferred to laboratory-sterilized, 40-milliliter glass containers The glass containers were labeled and place in iced storage for delivery to the environmental laboratory These samples were submitted to Matrix Environmental Laboratories, Inc under strict chain of custody (Appendix D) 5 3 3 Laboratory Analyses and Results Laboratory analytical data of a groundwater sample collected in this manner is not generally accepted by state and local regulatory agencies as an accurate representation of formation water conditions This approach however, was very cost-effective in plume delineation because it reduced the number of monitor wells necessary to fully delineate the plume Results of the laboratory analyses from the well point and monitor well samples were used to construct an iso--concentration map of benzene concentrations detected in groundwater beneath the area(Figure 7) The soil and ground water samples were analyzed for TPHg and BTEX using EPA methods 8015 modified/5030 and EPA method 8020 (602 for water), respectively Results of these laboratory analyses indicated that soil was contaminated only in soil borings B6 and B7 and groundwater was contaminated only in boring B6 (Table 7) Laboratory reports for these samples are presented in Appendix D SEACOR 014-01-1 par 13 D