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DISCUSSION <br /> At the time of the fourth quarter 2003 monitoring event, groundwater elevations had decreased 0 87 to <br /> 0 88 feet since the August 4, 2003, monitoring event Groundwater elevations measured during the fourth <br /> quarter 2003, are generally consistent with historical data <br /> During the fourth quarter 2003, TPHG, benzene, or MTBE were not reported in either monitoring well <br /> TBA was reported in monitoring wells MW-1 (8 0 pglL) and MW-2 (7 6 pg/L) DIPE, ETBE, TAME, or <br /> ,.2--DCA-were not reported in either monitoring well Chemical analytical data for the fourth quarter 2003 <br /> are similar to historical monitoring well data <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 /> P V B C\Stockton\Qrtly120031IBC Stockton-4Q03 DOC 5TRATU5 <br />