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15 August 2005 <br /> AGE-NC Project No 97-0326 <br /> IPage 4of5 <br /> MW-9A at a maximum concentration of 180 pg/l (MW-3) TAME was detected in samples MW-1, <br /> MW-2, MW-3, MW-8A, and MW-9A at a maximum concentration of 270 pg/l (MW-3) <br /> HU2 -TPH-g and BTEX compounds were detected In samples MW-8B and MW-9B, at maximum <br /> concentrations of 3,200 pg/1 TPH-g (MW-9B), 1,800 µg/1 benzene, (MW-9B), 300 pg/l toluene <br /> (MW-9B), 2630 pgd ethylbenzene (MW-9B), and 680 pg/1 xylenes (MW-9B) <br /> The fuel additive DIPE was detected in sample MW-8B at a concentration of 14 pg/1 <br /> HU4-TPH-g and BTEX compounds were detected in samples MW-8C and MW-9C,the maximum <br /> concentrations were detected in sample MW-9C at 2,000 pg/I TPH-g, 270 pg/1 benzene, 70 µg/1 <br /> toluene, 28 µg/1 ethylbenzene, and 96 µg/1 xylenes <br /> The fuel additives TAME was detected In sample MW-8C at 2 2 pg/1 and 1,2-DCA In sample <br /> MW-9C at 6 7 pg/l <br />' HU6-TPH-g compounds and BTEX were detected In samples MW-8D and MW-9D,the maximum <br /> concentrations were detected in sample MW-9D at 500 µg/1 TPH-g, 41 µg/l benzene, 44 pg/l <br /> toluene, 19 pg/1 ethylbenzene, and 59 µg/1 xylenes <br />' The fuel additive TAME was detected in sample MW-9D at 2 5 µg/1 <br /> No additional analytes were detected at or above the laboratory reporting limits In the samples <br />' analyzed Analytical results are summarized In Table 2 The laboratory report (CTEL Project No <br /> 214-0506151),quality assurance/quality control report,and chain of custody forms are presented in <br /> Appendix C Documents confirming the upload of laboratory electronic deliverable format(EDF) <br />' files and depth to water measurements to GeoTracker are provided In Appendix D <br />' 4.0. SUMMARY AND CONCLUSIONS <br /> The following conclusions were drawn from the results of this investigation <br />' 0 The ground water elevations on 15 June 2005 ranged from 18 08 feet(MW-9B)to 20 94 feet <br /> (MW-8D)below MSL,the flow direction of first-encountered ground water was inferred to <br />' be toward the south-southeast at a gradient of between 0 005 ft/ft <br /> TPH-g and BTEX compounds were detected in ground water samples collected from all <br />' HUs The fuel additive MTBE was detected only in HU 1, fuel additive 1,2-DCA was <br /> detected only in HU1 and HU4, fuel additive TAME was detected in HU1, HU4 and HU6, <br /> fuel additive DIPE was only detected In HU2 Laterally, the highest concentrations of <br /> 1 Advanced GeoEnvironmental,Inc <br /> I <br />