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Date July 29,2003 <br /> Quarter 2"d Quarter,2003 <br /> MTprii, µA" r 10-� - < obl- <br /> • The reported result for TPHg in sample MW-5 is due to a discrete peak(probably MtBE)and bas been <br /> rejected accordingly <br /> t <br /> • The reported results for WE in samples MS-2A,MS-2B,MS-3A,and MS-3B may be biased low due <br /> to a low average percent recovery reported in the associated LCS/LCSD analysis <br /> • The elevated reporting limits were the result dilutions performed by the laboratory in order to <br /> quantitate target analytes <br /> DISCUSSION: <br /> Total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, xylenes (total) (BTEX), and <br /> methyl tert-butyl ether(MtBE) were reported in groundwater samples collected from site wells this quarter Analyte <br /> concentrations were generally consistent with historid4data Groundwater elevations generally increased relative to <br /> the previous sampling event The inferred direction of groundwater flow across the site was northeast to southeast <br /> with an average hydraulic gradient of 0 001 to 0 003 ft/ft <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 Monitoring 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 /> i <br /> Y-mpro essV5 BP ARC0V021301Quanerlyl2 QTR 0312130 GWMR 2Q03&c page 2 <br />