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I 1 <br /> 15 January 2002 <br /> AGE-NC Project No 98-0540 <br />' Page 3 of 4 <br />' same two samples at concentrations of 52 µg/l and 20 gg/l, respectively No fuel oxygenated <br /> compounds were detected above laboratory reporting limits (Table 2) <br /> No contaminants were detected above laboratory reporting lm is in the ground water sample <br /> collected from the domestic well on site <br />' Analytical results of ground water samples are summarized on Table 2 Copies of the laboratory <br /> report (MAI Lab IDs 85690 through 85692 and 87719) and chain-of-custody forms are in <br /> Appendix B <br />' 4.0. SUMMARY AND CONCLUSIONS <br /> 1 <br /> Based upon data collected from the site, AGE concludes the following <br /> The maximum ground water gradient was 0 002 ft/ft with a flow direction toward the south- <br /> southeast, ana was consistent with the gradient and flow direction from the last monitoring <br /> event <br /> O TPH-g and BTEX compounds were detected in ground water samples collected from MW-I <br /> and MW-3 The benzene concentration detected in the sample collected from MW-3 <br /> exceeded the State of California's Maximum Contaminant Level (MCL) of I �tg/l <br /> C MTBE and other oxygenated fuel additives were not detected above laboratory reporting _ <br /> lirnts in any of the ground water samples <br /> C The highest concentrations of dissolved petroleum hydrocarbons are In the area of the former <br /> UST (MW-1) and down-gradient (MW-3) , <br /> • The lateral extent of dissolved petroleum hydrocarbon-Impacted groundwater has not been <br /> fully delineated <br /> 5.0. RECOMMENDATIONS <br /> Based upon data collected from the site,AGE recommends continued groundwater monitoring The <br /> next quarterly monitoring event should be scheduled for March 2002 <br /> S 1 <br /> Advanced GeoEnv1roi3Lment4Inc <br />