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4 <br /> s� <br /> Date April 29,2004 <br /> Quarter. 1s1 Quarter,2004 <br /> DISCUSSION: <br /> Gasoline range orgamcs (GRO), methyl tert-butyl ether (MtBE), and 1,2-dichloroethane (1,2-DCA) were reported <br /> above method detection limns in groundwater samples collected from site wells this quarter In MW-1, MtBE was <br /> reported below method detection limits for the first time historically and 1,2-DCA levels continue to decrease In <br /> MW-2, GRO and total xylenes were reported below method detection limits and MtBE and 1,2-DCA concentrations <br /> decreased In MW-3, GRO was reported at the highest concentration historically and 1,2-DCA concentrations <br /> increased but remain within historic ranges this quarter Groundwater elevations in site wells increased relative to <br /> the previous monitoring event The inferred groundwater flow direction was to the southwest at an average hydraulic <br /> gradient of 0 001 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 /> Table 3 Groundwater Gradient 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,Chain-of-Custody Documentation,and Field Data Sheets <br /> Appendix C GeoTracker Upload Confirmation <br /> K 1WRocessV5 RP ARMOM60\Quanerlym QTR 04\766 GWMR 1Q04 do Page 2 <br />