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Date: July 212004 <br /> Quarter: 2n Quarter 2004 <br /> • DISCUSSION <br /> Total xylenes and methyl tert-butyl ether (MtBE) were the only analytes reported in groundwater samples collected <br /> from site monitoring wells this quarter MtBE concentrations in MW-6 increased relative to the previous quarter but <br /> remain below historic high ranges In MW-13D,toluene was reported as below method detection limits this quarter <br /> Other analyte concentrations were generally consistent with the previous quarter <br /> Groundwater elevations generally decreased relative to the previous quarter The inferred direction of groundwater <br /> flow ranged from the northeast to northwest at an average hydraulic gradient of 0 004 to 0 005 feet/foot, which is <br /> 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 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 1Wproc ssV5 BP ARC0106W01QaanerVa QTR 6416020 GWMR 2Q04 doc Page 2 <br />