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1 <br />' 15 November 2000 <br /> A• <br /> 'AGE-NC Project No 98-0540 <br />' Page 3 of 4 <br />' Tertiary butonol was detected in the sample from well MW-3 at concentrations of 19 µg/1 No other <br /> fuel oxygenated compounds were detected above laboratory reporting limits (Table 2) <br />' No contaminants were detected above laboratory reporting limits 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 The laboratory report(AAL <br /> Laboratory Order No A00091405) and chain-of-custody forms are included in Appendix B <br />' 4.4. SUMMARY AND CONCLUSIONS <br />' Based upon data collected from the site, AGE concludes the following <br /> • The ground water gradient was 0 005 ft/ft directed S 44° E, and was consistent with the <br />' gradient and flow direction from the last monitoring event <br /> • TPH-g and BTEX compounds were detected in ground water samples collected from MW-1 <br />'• and MW-3 Benzene concentrations exceeded the State of California's Maximum <br /> Contaminant Level (MCL) of 1 µg/1 in both samples <br /> e MTBE was not detected above laboratory reporting limits in any ofthe ground water samples <br /> collected and analyzed <br /> f� I <br /> 0 TBA was detected at 19 µgd in the ground water sample collected from MW-3 <br /> • The highest concentra�>ons of dissolved petroleum hydrocarbons is in the area of the former <br /> UST <br /> I • The lateral extent of dissolved petroleum hydrocarbon-impacted ground water has not been <br /> fully delineated <br /> Yb o y <br /> 5.0 RECOMMENDATIONS r - <br /> IBased upon data collected from the site,AGE recommends continued ground water monitoring The <br /> next quarterly monitoring event should be scheduled for December 2000 <br /> Advanced GeoEnvironmental,Inc <br /> I <br />