ARCHIVED REPORTS XR0001528 - Laserfiche WebLink

Home Browse Search

- r v ' 14 November 2005 AGE-NC Project No 03-1100 ' Page 3 of 4 v The ground water flow direction was inferred to be flowing towards the southeast in the former UST ' location at a calculated hydraulic'gradient of 0 006 foot per foot (ft/ft) Figure 3 illustrates the contoured ground water elevations as measured on 02 September 2005 r 12 ANALYTICAL RESULTS OF GROUND WATER SAMPLES 1 TPH-g was detected in the ground water sample collected from well MW-2 at a concentration of 210,000 micrograms per liter (µg/1) BTEX compounds were detected in the ground water sample ' collected from well MW-2 at a concentration of 2,800 µg/1 (benzene), 16,000 µg/l (toluene), 4,000 µg/l (ethylbenzene), and 24,200 µg/l (total xylenes) ' -1,2-DCA was detected-in ground water samples collected from wells MW-2 and MW-3 at concentrations of 19 µg/l and 14 µg/1, respectively EDB was detected In the ground water sample collected from well MW-2 at a concentration of 6 3 µg/l No other constituents of concern were detected in the ground water analyses at or above laboratory detection limits Analytical results of water samples collected in September 2005 are summanzed In Table 2 The laboratory report (CTEL Project No CT214-0509027), quality assurance/quality control (QA/QC) report, and chain of custody form are included in Appendix B GeoTracker confirmation pages of the submitted ground water monitoring electronic deliverable format(EDF) files are included in Appendix C r 4.0. SUMMARY AND CONCLUSIONS ' `,'Based on the findings from this investigation, AGE concludes The ground water elevation on-site ranged from 22 92 to 23 54 feet below MSL Ground water flow was inferred to be' flowing inward towards the southeast in the former UST - location under a gradient of 0 006-ft/ft - - _ ,` _ _ ___,- _ - � _ - • TPH-g was detected in the ground water sample collected from well MW-2 at a concentration of 210,000 µg/1 ' 1,2-DCA was detected in ground water samples collected from wells MW-2 and MW-3 at concentrations of 19 µg/l and 14 µg/l, respectively ' The lateral extent of TPH-g impacted ground water has been defined in all directions with the exception of southeast of well MW-2 ' Advanced GeoEnvironmental,Inc i .