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I I11 February 2005 AGE-NC Project No 00-0696 IPage 5 of 7 BTEX compounds were detected in samples MW3-10 and MW3-15 at maximum concentrations in MW3-10 of 0 064 mg/kg toluene, 0 13 mg/kg ethylbenzene, and 0 64 mg/kg total xylenes Figure 4 illustrates the estimated extent of adsorbed petroleum hydrocarbons at the site No additional analytes were detected at or above laboratory detection limits in the soil samples analyzed Analytical results of soil samples are summarized in Table 2 The laboratory report(CTEL IProject No CT214-0411028), quality assurance and quality control (QA/QC) report, and chain of custody forms are included in Appendix E I 3 3 GROUND WATER GRADIENT AND FLOW DIRECTION ' At the time of the November 2004 sampling event, depths to ground water ranged from 4 45 feet (MW-4)to 5 18 feet(MW-1)below the tops of the well casings Ground water elevation at the site ' ranged from 16 85 feet (MW-2)to 17 34 feet (MW-3) below mean sea level (MSL), and averaged approximately 17 10 feet below MSL (Table 1) During this monitoring event, the ground water levels in wells MW-2 through MW4 were as high as 0 55 feet above the tops of the well screens, . indicating that the wells may not have yielded accurate data representative of shallow ground water conditions Ground water at the site was inferred to be flowing toward the northeast and north-northwest under equivalent hydraulic gradients of approximately 0 01 foot/foot (ft/ft) Figure 4 illustrates the contoured ground water elevations as measured on 29 November 2004 34 ANALYTICAL RESULTS OF GROUND WATER SAMPLES ' BTEX compounds were detected in the ground water sample from well MW-3 at the following concentrations 2 6 micrograms per liter(µg/1)benzene,3 6µg/1 toluene,2 5 µg11 ethylbenzene,and 8 4 µg/1 total xylenes No other analytes were detected at or above laboratory detection limits in the ground water samples ranalyzed The analytical results of the ground water samples collected on 29 November 2004 are summarized in Table 3 The laboratory report(CTEL Project No CT214-0411201),QA/QC report, ' and chain of custody form are included in Appendix F Documents confirming the upload of laboratory electronic deliverable format(EDF)files and depth to water measurements to GeoTracker are included in Appendix G Advanced Geoirnvironmental,Inc