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• Date- October 27,2003 <br /> Quarter 3rd Quarter,2003 <br /> DISCUSSION: <br /> TPHg, benzene, methyl tent-butyl ether (MtBE), and 1,2-dichloroethane (1,2-DCA) were reported above method <br /> detection limits in groundwater samples collected from site monitoring wells this quarter Analyte concentrations <br /> were generally consistent with historic data with the following exceptions MtBE concentrations decreased and <br /> benzene concentrations increased in MW-1 relative to the previous monitoring event MtBE concentrations <br /> increased in MW-4 but are within historic ranges�MtBE concentrations decreased in VW-1B,VW-2B and VW-3B <br /> this quarter' 1,2-DCA was reported in VW-2B and VW-3B at 5 5 micrograms per liter (Itg/L) and 23 jug/L, <br /> respectively All other analytes were reported as below laboratory detection limits Groundwater elevations in wells <br /> across the site generally decreased relative to the previous quarter The inferred groundwater flow direction was to <br /> the northeast at an average gradient of 0 005 feet/foot <br /> This report is based on data, site conditions,and other information that are generally applicable as of the date of the <br /> report,and the conclusions and recommendations herein are therefore applicable only to that time frame <br /> TABLES <br /> Table 1 Groundwater Elevation and Analytical Data <br /> Table 2 Fuel Oxygenates Analytical Data <br /> FIGURES <br /> Figure 1 Groundwater Elevation Contours <br /> Figure 2 Groundwater Analytical Summary <br /> • APPENDICES <br /> Appendix A Field and Laboratory Procedures <br /> Appendix B Laboratory Analytical Reports,Cham-of-Custody Documentation,and Field Data Sheets <br /> Appendix C GeoTracker Upload Confirmation <br /> K1WpWcessV5BPARCO\MI%QuanerWQTR 0312166GWMR 3Q03doe Page 2 <br />