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Date February 6,2003 <br /> Quarter 4`h Quarter,2002 <br /> DISCUSSION: <br /> Benzene, toluene, ethylbenzene, total xylenes (BTEX), and methyl tert-butyl ether(MtBE) were reported in samples <br /> taken from site wells this reporting period BTEX compounds and MtBE were detected for the first time in MW-7 <br /> this quarter MtBE was reported in MW-6 at the highest concentration since the fourth quarter of 2001 (2,200 <br /> micrograms per liter [ug/1-1) Groundwater elevations in site wells increased relative to the previous quarter The <br /> inferred direction of groundwater flow was to the north-northwest at an average hydraulic gradient of 0 002 ft/ft, <br /> which is consistent with historic data <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 Contour Map <br /> Figure 2 Groundwater Concentration Map <br /> APPENDICES <br /> Appendix A Field and Laboratory Procedures <br /> Appendix B Laboratory Analytical Reports,Chain-of-Custody Documentation, and Field Data Sheets <br /> i <br /> K U5 BP ARC0\0W201Quancr1y14_QTR 02\W20 GWMR4QO2 4oc Page 2 <br />