Laserfiche WebLink
ti <br /> .t <br /> . DISCUSSION: <br /> TPHG and benzene were detected in the samples collected from monitoring wells MW-4 and MW-$. <br /> Benzene was also detected in the samples collected from MW-5 and MW-6, MTBE was detected in the <br /> samples collected from wells MW-1, MW-3 through MW-8, and MW-10. Petroleum hydrocarbons were <br /> not detected in samples collected from monitoring wells MW-2 or MW-9. <br /> The groundwater flow direction on December 14, 2001, was calculated to be towards the northeast at an <br /> average gradient of 0.0022 ft/ft. Groundwater flow direction has predominantly been toward the northeast <br /> and east. <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 Contours (4th Quarter 2001) <br /> • Figure 3 Groundwater Analytical Summary(4th 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 /> 6 <br /> w <br /> PAIARC0\54b91Quarter]y120011Arco 5469 4 O1.doc <br /> Q Delta <br /> a <br />