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' 20 March 2006 <br /> AGE-NC Project No 95-0130 <br />' Page 10 of 13 <br />' Methods 355015030/8015 Modified and <br /> • BTEX, TBA, DIPS, ETBE, TAME and MTBE by EPA Method 8260B <br /> t44 INFLUENT MONITORING RESULTS <br /> In accordance with the requirements of City of Stockton Department of Utilities Ground Water <br /> Discharge Permit, monthly ground water P&T system influent sampling was performed on 10 <br /> October 07 November and 06 December 2005 for laboratory analysis of contaminants listed in <br /> Section 4 3 <br /> During the above monthly monitoring events,influent water samples detected TPH-g during all three <br /> monthly monitoring events at concentrations as high as 30,000 pg/1 (November 2005) TPH-d and <br />' TPH-mo were not detected in any of the above referenced samples <br /> BTEX constituents were detected during all three monthly monitoring events at concentrations as <br /> high as 5,000 µg/l benzene, 8,000 pg/1 toluene, 900 dig/l ethylbenzene and 8,900 µg/1 xylenes <br /> (November 2005) <br /> • MTBE was detected (EPA Method 8260) during all three monthly monitoring events at <br /> concentrations as high as 2,400 µg/1 (November 2005), however, MTBE concentrations decreased <br /> to 20 lig/l during the December 05 sampling event <br /> The laboratory y an analysis did not detect other constituents of concern Analytical results of <br /> Y <br /> extraction and treatment water samples(CTEL Laboratory I D Nos 0510-056,0511-054 and 0512- <br /> 048) are summarized in Table 8, laboratory reports are included in Appendix H, GeoTracker <br /> confirmation pages of the submitted laboratory electronic deliverable format(EDF)files are included <br /> in Appendix C <br /> 45 EFFLUENT MONITORING RESULTS <br /> In accordance with the requirements of City of Stockton Department of Utilities Ground Water <br />' Discharge Permit, monthly ground water P&T system effluent sampling was performed on 10 <br /> October, 07 November and 06 December 2005 for laboratory analysis of contaminants listed in <br /> Section 4 3 <br /> Laboratory analysis of ground water P&T system effluent grab water samples did not detect any <br /> constituents of concern Analytical results of extraction and treatment effluent water samples(CTEL <br />' Laboratory I D Nos 0510-056, 0511-054 and 0512-048) are summarized in Table 8, laboratory <br /> reports are included in Appendix H,GeoTracker confirmation pages of the submitted laboratory EDF <br /> Advanced GeoEnwronmental,Inc <br />