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Hyl <br /> DISCUSSION <br /> Results of this monitoring event indicate that the levels of dissolved hydrocarbons are generally consistent <br /> with levels detected in previous sampling events The highest levels of TPH gasoline (106 pg/L) and <br /> benzene (6 46 pg/L) were detected in MW-5 and MW-1, respectively The highest concentration of MTBE <br /> was detected at 42 pg/L in MW5 MTBE was the only constituent detected in monitoring wells MW3 and <br /> MW6 at levels of 6 3 µglL and 14 µg/L, respectively None of the other oxygenates were detected in any <br /> of the wells <br /> The direction of groundwater flow was east with a gradient of 0 0036 ft/ft This is consistent with previous <br /> groundwater monitoring events The Groundwater elevation decreased approximately 1 foot in the wells <br /> from the previous sampling event (March 2000) <br /> Delta will conduct a startup and source test of the AS/SVE system which will consist of KingBuch/Hass <br /> Tech Catalytic Oxider model MMC5a Upon system startup influent and effluent air samples will be <br /> collected for laboratory analysis <br /> ATTACHMENTS <br /> • Table 1 Groundwater Monitoring Data <br /> • Figure 1 Site Location Map <br /> • Figure 2 Groundwater Elevation Contour(Second Quarter 2000) <br /> • Figure 3 Groundwater Analytical Summary(Second Quarter 2000) <br /> • Appendix A Sampling and Analysis Procedures <br /> • Appendix B Laboratory Analysis Reports and Chain-of-Custody Records <br /> • Appendix C Field Data Sheets <br /> i <br /> I <br /> i <br /> i <br /> i <br /> C 1ARCO\05481QTRLY1200010548Q200 DOC Delta <br /> 09/20/00 <br />