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Date May 19,2003 <br /> Quarter 15` Quarter,2003 <br /> • <br /> DISCUSSION: <br /> Total petroleum hydrocarbons as gasoline (TPHg), ethylbenzene, and methyl tert-butyl ether (MtBE) were reported <br /> in samples collected from site wells this quarter Analyte concentrations were generally consistent with historic data <br /> Groundwater elevation in site wells generally decreased relative to the previous monitoring event The inferred <br /> direction of groundwater flow across the site was variable at average hydraulic gradient of 0 01 feet/foot <br /> The soil vapor extraction (SVE) system did not run during the reporting period The air sparge (AS) system <br /> operated from January 22 through the end of the first quarter Attachment A contains historical SVEIAS system <br /> operational 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 <br /> • Figure 2 Groundwater Analytical Summary <br /> APPENDICES <br /> Appendix A Remedial System Performance Evaluation <br /> Appendix B Field and Laboratory Procedures <br /> Appendix C Laboratory Analytical Reports,Chain-of-Custody Documentation,and Field Data Sheets <br /> is <br /> K%Wjvo ss115 BP ARC002093\Quanerlyll QTR 03 2093 GWMR1 Q03 doc Page 2 <br />