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Date July 29,2003 <br /> Quarter 2'd Quarter,2003 <br /> DISCUSSION: <br /> Total petroleum hydrocarbons as gasoline (TPHg), ethylbenzene, xylene, toluene, and methyl tert-butyl ether <br /> (MtBE) were reported in groundwater samples collected from site wells this quarter Analyte concentrations were <br /> generally consistent with historic data Groundwater elevation in site wells generally decreased relative to the <br /> previous monitoring event The inferred direction of groundwater flow across the site was variable at an average <br /> hydraulic gradient of 0 02 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 second quarter Attachment A contains historical SVEJAS 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 Contours <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 /> • <br /> K-\Wproce V5 BP ARC01020931Quww1yl2 QTR 0312093 GWMR 2Q03 doc Page 2 <br />