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0 <br /> ADDITIONAL ASSESSMENT WORKPLAN <br /> dAMAR SERVICE,STOCKTON <br /> APRIL 2002 <br /> 4 Select locations for 2 to 3 additional monitoring wells based on the CPT, 'results a"%& <br /> the sensitive receptor survey <br /> • Drill and install off-site monitoring wells and an extraction well EW-1 immediately south <br /> of monitoring well MW-1 <br /> Analyze selected soil samples for TPH G,TPH D, BTEX, 1,2-DCA, EDB, and fuel <br /> oxygenates <br /> • Develop,purge and sample groundwater monitoring wells and the extraction well <br /> • Analyze groundwater samples for TPH G, TPH D, BTEX, 1,2 DCA, EDB,and fuel <br /> oxygenates <br /> Perform elevation and GPS survey of new groundwater monitoring wells <br /> • Collect a water sample from the nearest downgradient domestic water well identified m the <br /> sensitive receptor survey and analyze for TPH G,TPH D, BTEX, 1,2-DCA,EDB, and fuel <br /> oxygenates <br /> • Conduct an APT and VET on the new extraction well EW-1 <br /> • Document findings in a Problem Assessment Report(PAR) for submittal to the County <br /> and Regional Board <br /> Provide project management <br /> A brief description of each task is presented below <br /> PROPOSED PRE-FIELD ACTIVITIES <br /> Health and Safety Plan <br /> A site specific HSP will be developed by GHH to minimize the potential for accidents or <br /> potentially dangerous exposure to chemicals, as well as to identify the nearest emergency medical <br /> facility A draft copy of the HSP is included in Appendix A <br /> i <br />