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DISCUSSION <br /> MTBE was detected in the samples collected from monitoring wells MW-1 (170 pg/L) and MW-2 (36 pg/L) <br /> TPHG, BTEX or EDB were not detected in any of the samples ETRE, DIPS, TAME, TBA, and 1,2-DCA <br /> were reported below laboratory detection limits for all of the samples, consistent with the previous <br /> sampling event <br /> The groundwater gradient was calculated to be towards the east at a gradient of 0 0011 ft/ft. The <br /> groundwater elevations decreased approximately 0 5 feet in the monitoring wells since the previous <br /> sampling event (March 2001) <br /> ATTACHMENTS <br /> • Table 1 Groundwater Monitoring Data <br /> • Table 2 Groundwater Analytical Results for Oxygenates and Additional Compounds <br /> • Figure 1 Site Location Map <br /> • Figure 2 Groundwater Elevation Contour Map (Second Quarter 2001) <br /> • Figure 3 Groundwater Analytical Summary(Second Quarter 2001) <br /> • Appendix A Field Data Sheets <br /> • Appendix B Sampling and Analysis Procedures <br /> • Appendix C Certified Analytical Reports and Chain-of-Custody Records <br /> C 1ARC0160801Quartcr1y1200116080 2Q01 doc Delta <br />