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10 21 December 2002 <br /> AGE-NC Project No 99-0559 <br />' Page 6 of 8 <br />' (MW-7B) MTBE was detected at concentrations ranging between 66 µg/1 (MW-8B)to detected at <br /> a maximum concentration of 600 µg/1 (MW-5B) <br />' HU5 <br /> I Within Upper HUS, TPH-g was detected at a maximum concentration of 2,100 µg/1 (MW-7C) <br /> TPH-g was not detected in the sample collected for well MW-8C Benzene was detected at a <br /> maximum concentration of 1,100 µg/l (MW-6C), the remaining BTEX compounds were detected <br /> I at concentrations ranging from 3 0µg/l xylenes(MW-5C)to 410µg/1 toluene(MW-7C) MTBE was <br /> detected at a maximum concentration of 80 pg/1 (MW-7C) <br /> IWithin Lower HU5,TPH-g was detected at concentrations ranging between 140 µg/l(MW-8D)and <br /> 210,000µg/1(MW-7D) Benzene was detected at concentrations ranging between 4 1 µg/l(MW-5D) <br /> to 14,000 µg/1(MW-7D),the other BTEX compounds were detected at concentrations ranging from <br />' 2 5 µg11 xylenes (MW-8D) to 8,200 µg/1 toluene (MW-7D) MTBE was detected at a maximum <br /> concentration of 6,800 µg/1 (MW-7D) <br /> 10 <br /> HU6 <br />' TPH-g was detected at concentrations ranging between 110µg/l(MW-8E)and 2,200}Ig/l(MW-6E) <br /> Benzene was detected at concentrations ranging between 15 µg/l(MW-8E)and 280 µg/l(MW-7E), <br />' the remaining BTEX compounds were detected at concentrations of 3 0 µg/1 toluene/xylene <br /> (MW-5E/8E) and 410 µg/1 toluene (MW-7E) MTBE was detected at concentrations of 48 µg/l <br /> (MW-6E), 61 µg/1 (MW-8E) and 130 µg/l (MW-7E) <br />' The analytical results of current as well as historical ground water samples are summarized in <br /> Table 2 Iso-concentration maps displaying the estimated distribution of dissolved benzene and <br /> I MTBE in the hydrologic units are depicted in Figures 8 through 12 The laboratory reports (CTEL <br /> I D nos 0209-129-1 to 22), quality assurance and quality control (QA/QC) reports and chain-of- <br /> custody forms are included in Appendix B <br /> I <br /> 4.0. SUMMARY AND CONCLUSIONS <br />' Based on data collected during the monitoring event, AGE concludes <br />' The general ground water flow direction for HUl and HU2 was west-southwest, while <br /> ground water flow direction for HU4 was generally northwest Ground water flow direction <br /> in the three deeper hydrologic units appeared to flow northwest to north-northwest <br />' Advanced GeoEnvlronmental,Inc <br />