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r <br /> IU S <br /> Groundwater monitoring data were normalized to MSL and used to prepare a groundwater elevation <br /> . contour map (Figure 6) The groundwater flow during the third quarter 2004 was radial toward well MW-8 <br /> at gradients of 0 006 and 0 0022 ftfft Groundwater flow in the deep wells has historically been toward the <br /> south and east <br /> TPHG and benzene were reported in wells MW-8 through MW-10 Benzene was also reported in well <br /> MW-17 The highest concentration of TPHG (8,100 µg/L) was reported in well MW-9, and the highest <br /> concentration of benzene (1,300 µg/L) was reported in well MW-8 TBA was reported in wells MW-8 (110 <br /> µglL) and MW-10 (13 µg/L) 1,2-DCA was reported in wells MW-10 (47 µg/L), MW-11 (1 7 pg/L), and <br /> MW-17 (8 4 µg/L) MTBE, DIPS, ETBE, TAME, or EDB were not reported in any of the deep wells These <br /> analytical results are generally consistent with historical data TPHG, benzene, and MTBE concentrations <br /> for samples collected and analyzed during the third quarter 2004 are included on Figure 7 <br /> Tentatively Identified Compounds <br /> SJCEHD has requested that all peaks detected in the analyses be reported A copy of the laboratory <br /> tentatively identified compounds (TIC) report is attached Tentatively identified compounds were reported <br /> in wells MW-8 through MW-10, MW-16, MW-18, and VEW-1 Results of the TIC analysis are <br /> summarized in Table 3 <br /> ATTACHMENTS <br /> • Table 1 Groundwater Elevation and Analytical Summary <br /> • Table 2 Groundwater Analytical Results for Oxygenates and Additional Compounds <br /> • Table 3 Summary of TIC Analysis Results <br /> • Figure 1 Site Location Map <br /> • Figure 2 Groundwater Elevation Contour Map, Shallow Groundwater Wells <br /> (Third Quarter 2004) <br /> • • Figure 3 Groundwater Analytical Summary, Shallow Groundwater Wells <br /> (Third Quarter 2004) <br /> • Figure 4 Groundwater Elevation Contour Map, Mid-Depth Groundwater Wells <br /> (Third Quarter 2004) <br /> • Figure 5 Groundwater Analytical Summary, Mid-Depth Groundwater Wells <br /> (Third Quarter 2004) <br /> • Figure 6 Depth to Groundwater, Deep Groundwater Wells <br /> (Third Quarter 2004) <br /> • Figure 7 Groundwater Analytical Summary, Deep Groundwater Wells <br /> (Third Quarter 2004) <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\Apache Plastics\Quarterly reports\2004\Apache_3Q04 DOC STIZATU5 <br />