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i <br /> 28 October 2005 <br /> AGE-NC Project No 95-0130 <br /> Page 9 of 13 <br /> • Total petroleum hydrocarbons as TPH-g,diesel and motor oil(TPH-d and TPH-mo),by EPA <br /> Methods 3550/5030/8015 Modified and <br /> • BTEX, TBA, DIPE, ETBE, TAME and MTBE by EPA Method 8260B <br />' 44 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 05 April, <br /> 03 May and 03 June 2005 for laboratory analysis of contaminants listed in Section 4 3 <br />' During the above monthly monitoring events, influent water samples detected TPH-g at <br /> concentrations as high as 50,000 µg/l(May 2005) TPH-d and TPH-mo were not detected in any of <br /> the above referenced samples <br /> IBTEX constituents were detected during all three monthly monitoring events at concentrations as <br /> high as 5,400 µg/1 benzene, 9,800 µg/l toluene, 1,700 }tg/l ethylbenzene and 10,300 dig/l xylenes <br /> • (May 2005) <br /> I The following fuel additives were detected MTBE was detected(EPA Method 8260)during all three <br /> monthly monitoring events at concentrations as high as 8,500 µg/1 (May 2005), TBA was detected <br /> from the April 2005 sample at a concentration of 150 pg/l, and 1,2-DCA was detected in the June <br /> I2005 sample at a concentration of 36 µg/1 <br /> The laboratory analysis did not detect any other constituents of concern Analytical results of <br /> extraction and treatment water samples (CTEL Laboratory I D Nos 0504062, 0505033 and <br /> 0506040) are summarized in Table 8, laboratory reports are included in Appendix I, GeoTracker <br /> confirmation pages of the submitted laboratory electronic deliverable format(EDF)files are included <br /> in Appendix D <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 05 April, <br /> 03 May and 03 June 2005 for laboratory analysis of contaminants listed in 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 /> Advanced GcoEnviroilme'n(9i,Int <br />