Laserfiche WebLink
' 24 April 2001 <br /> • AGE-NC Project No 98-0511 <br />' Page 3 of 4 <br />' 220µg/1 ethylbenzene and 1,100µg/l total xylenes Benzene,toluene and total xylenes were detected <br /> in MW-5 at concentrations of 10 µg11, 1 0 µg/1 and 0 85 µg/l, respectively <br />' MTBE was detected in the groundwater samples collected from MW-3 and MW-5 at concentrations <br /> of 12 µg/1 and 120 µg/1 respectively No other fuel oxygenated compounds were detected at <br /> concentrations above laboratory reporting limits <br />' Analytical results of ground water samples are summarized on Table 2 Copies of the laboratory <br /> report (MAI Laboratory ID 64260-64267) and chain-of-custody forms are in Appendix B <br />' 4.0. SUMMARY AND CONCLUSIONS <br /> Based upon data collected from the site, AGE concludes the following <br /> I • The ground water gradient was calculated to range from 0 003 ft/ft to 0 004 ft/ft,the ground <br /> water flow direction appears to be generally northwestward, varying from nearly west to <br /> I� north <br /> Samples from MW-2, MW-3, MW-4, MW-5, MW-7 and MW-8 had less than detectable <br /> concentrations of all analytes <br />' • There were no significant variations of concentrations of any detected analytes in samples <br /> from MW-1 and MW-5 <br />' • The plume of impacted ground water is delineated toward the south, west, southeast, and <br /> north, but is not constrained toward the northwest or east to northeast <br /> I <br /> 5.0 RECOMMENDATIONS <br /> IBased upon data collected from the site, AGE recommends <br /> I • Additional grab ground water samples from several additional borings to define the vertical <br /> as well as the northwestern and eastern lateral extent of the contaminated ground water <br /> plume <br /> • Continued ground water monitoring <br /> • <br /> I <br /> Advanced GeoEnvironmental,Inc <br /> I <br />