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,r <br /> DISCUSSION <br /> During the second quarter 2003 monitoring event, groundwater was measured in the wells at depths of <br /> 21 03 and 21 15 feet below ground surface (bgs) Groundwater elevations Increased 1 78 to 1 82 feet <br /> since the February 12, 2003, monitoring event Groundwater elevations measured during the second <br /> quarter 2003, are generally consistent with historical data Since March 2000, groundwater elevations <br /> appear to exhibit a generally downward trend <br /> During the second quarter 2003, TPHG, benzene, and MTBE were not detected in either monitoring well <br /> TBA was detected in the sample collected from well MW-2 at the concentration of 5 2 µg& Chemical <br /> analytical data for the second quarter 2003 are similar to historical data for the wells <br /> ATTACHMENTS <br /> • Table 1 Groundwater Elevation and Analytical Data <br /> • Table 2 Groundwater Analytical Results for Oxygenates <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 /> • Appendix C Certified Analytical Reports and Chain-of-Custody Documentation <br /> • <br /> P 11 B C1Stockton\Qrt1y120031IBC Stockton-2Q03 DOC 5TRATU5 <br />