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DISCUSSION: <br /> At the time of the fourth quarter 2002 monitoring event, groundwater was encountered in the monitoring <br /> wells at depths ranging from 51.62 to 51.80 feet below ground surface (bgs). Groundwater elevations <br /> have increased between 0.04 feet and 0.07 feet in the monitoring wells since the September 10, 2002 <br /> monitoring event. <br /> TPHG and BTEX constituents were detected in samples collected from well MW-13 at concentrations of <br /> 5,500 pg/L, 28 pg/L, 15 pg/L, 120 pg/L, and 345 pg/L, respectively. TPHG (720 pg/L), ethyl benzene (1.9 <br /> pg/L), total xylenes (2.1 �ig/L) and 1,2 DCA (4.1 pglL) were detected in groundwater samples collected <br /> from well MW-14. Total lead was detected in wells MW-13 (0.015 mg/L), and MW-14 (0.007 mg/L). <br /> These analytical data appear to be generally consistent with available historical data. <br /> ATTACHMENTS: <br /> ® Table 1 Groundwater Elevation and Analytical Summary <br /> * Figure 1 Site Location Map <br /> Figure 2 Site Map <br /> Appendix A Field Data Sheets <br /> ® Appendix B Sampling and Analysis Procedures <br /> m Appendix C Certified Analytical Reports and Chain-of-Custody Documentation <br /> • <br /> P:\Teichert\Stockton-]031Quarterly120021Teichert_4Q02.DOC 5 TRA TV5 <br />