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' The two on-site domestic wells were also sampled during this quarterly sampling event. <br /> (� Each well was sampled by activating the installed submersible pump to produce water. <br /> Samples were collected at the well head sampling ports by gently filling two VOA vials <br /> ' in accordance with the procedures previously described. <br /> The samples were transported under strict chain-of-custody protocol to GeoAnalytical <br /> Laboratories in Modesto, California for analysis. All samples were delivered to the <br /> analytical laboratory within two hours from their time of collection. Appendix A <br /> contains analytical data, chain-of-custody and QA/QC data. Tables 2 and 3 summarize <br /> the analytical results from the monitoring well samples for the September 22, 1998 <br /> sampling event. Analytical results from previous sampling events are presented in Table <br /> 4. <br /> ' 5.0 GROUNDWATER ANALYTICAL RESULTS <br /> 5.1 Laboratory Analysis of Ground Water Samples <br /> All ground water samples were submitted to GeoAnalytical Laboratories of Modesto, <br /> California and were analyzed for the following constituents by the indicated methods: <br /> • Total Petroleum Hydrocarbons (TPH) - Gasoline, Method 5030/LUFT <br /> Detection limit 0.05 mg/L. <br /> • Benzene, Toluene, Ethyl benzene, Xylenes (BTEX), EPA Method 602 <br /> Detection limits 0.3 µg/L BTE, 0.6 p,g/L X. <br /> The detection limits quoted above are the minimum reportable levels specified by the <br /> analytical laboratory. The presence of other hydrocarbons may raise the detection limits <br /> for particular constituents. Refer to the laboratory data sheets in Appendix A for sample <br /> specific detection limits. <br /> i <br /> • CA95DE-029 American Geological Services, Inc. <br /> i ' <br /> i <br />