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FP Recovered This Quarter No <br /> 10) Cumulative FP Recovered to Date NA <br /> Approximate Depth to Groundwater 8 37 to 9 82 feet below top of well casing <br /> Groundwater Flow Direction North-northwest(on-site), northeast off-site <br /> Groundwater Gradient 0 0005 and 0 0010 ft/ft <br /> DISCUSSION <br /> At the time of the second quarter 2004 monitoring event, groundwater elevations had decreased between <br /> 0 16 and 0 40 feet in all monitoring wells since the previous monitoring event (March 4, 2004) <br /> Depth-to-water measurements were corrected to mean sea level (MSL) and used to construct a <br /> groundwater elevation contour map (Figure 2) Groundwater flow beneath the site was to the <br /> north-northwest at a gradient of 0 0010 ft/ft Off-site, groundwater flow was toward the northeast at a <br /> gradient of 0 0005 ft/ft Historically, groundwater flow in the monitoring well network has been towards the <br /> northeast, with occasional flow also towards the north, north-northwest, and east <br /> TPHD (150 pg/L) was reported In well MW-6 The laboratory noted this result Included compounds <br /> uncharacteristic of common fuels and lubricants TPHG and MTBE were reported In wells MW-2, MW-3, <br /> and MWO-1X MTBE was also reported in wells MW-4 and MWO-2 The highest concentrations of <br /> TPHG (480 pg/L) and MTBE (720 pg/L) were reported in well MWO-1X TAME (2 9 pg/L) was reported in <br /> well MW-3 BTEX, TBA, DIPE, ETBE, 1,2-DCA, 1,2-DBA, ethanol, or methanol were not reported in any <br /> of the wells These data are generally consistent with historical data TPHD, TPHG, benzene, and MTBE <br /> concentrations at each monitoring well location are presented on Figure 3 <br /> ATTACHMENTS <br /> i • Table 1 Groundwater Elevation and Analytical Summary <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 2004) <br /> • Figure 3 Groundwater Analytical Summary (Second 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 /> I <br /> I <br /> P Voe's Truck P1aza\Quarter1y1200417oe's Truck Plaza 2Q04 DOC STRATUS <br />