ARCHIVED REPORTS_XR0004136 - Laserfiche WebLink

Home Browse Search

I10 February 2006 AGE-NC Project No 02-0977 Page 8of12 , of selected soil samples are summarized in Table 3 GeoTracker confirmation pages of the submitted Ilaboratory electronic deliverable format (EDF) files are included in Appendix C, the laboratory reports(CTEL I D Nos 0512-094,0512-095,0512-096,0512-097 0512-106,0512-107)and chain- of-custody forms are included in Appendix F Three soil samples (B6-40, B6-70 and B7-35) were submitted to Cooper Testing Laboratory for ' laboratory analysis of permeability and porosity by American Society for Testing Materials(ASTM) standard D 5084 Analysis of B7-35 (silty Sand/sandy Silt) reported an average permeability of 2 X 10' cm/s and a porosity at 45 1 percent Analysis of B6-40 (silty Sand) reported an average permeability of 2 X 10'cm/s and a porosity at 38 percent Analysis of B6-70 (clayey Sand)reported an average permeability of 2 x 10-'cm/s and a porosity at,32 6 percent The laboratory reports(CTL Job No 255-041) and chain-of-custody forms are included in Appendix G I 3 5 LABORATORY RESULTS OF GROUND WATER SAMPLES ' A total of eight ground water samples were submitted to CTEL, a DHS-certified laboratory for analysis of TPR-g, BTEX, MTBE, TAME, DIPE, ETBE, TBA, 1,2-DCA and EDB I • TPH-g was detected from wells MW-2, MW-3 and MW-5 at concentrations of 89,000 micrograms per liter(µg/1), 1,900 µg/1 and 220 gg/l, respectively ' BTEX constituents were detected from well MW-2 at concentrations of 2 9 l benzene, 3 2 1 gP� g� ' toluene and 2 µg/1 xylene MTBE was detected from wells MW-2, MW-3 and MW-5 at concentrations of 80,000 Vg/l, 1,800 ' µg/l and 220 Vg/l, respectively TAME was detected from well MW-2 at a concentration of 18 gg/l ' No other constituents of concern were detected above laboratory reporting limits in the analyzed samples Analytical results of ground water monitoring well samples are summarized in Table 4 The ' estimated extent of MTBE-impacted ground water is depicted in plan view in Figure 10 GeoTracker confirmation pages of the submitted laboratory electronic deliverable format(EDF)files are included in Appendix C, laboratory reports (CTEL I D No 0512-173) and chain-of-custody forms are ' presented in Appendix H I ' Advanced GeoEnvironmental,Inc