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26 August 2013 <br /> AGE Project No. 95-0130 <br /> Page 6 of 9 <br /> • Benzene,toluene, ethylbenzene and total xylene (BTEX), methyl tertiary butyl ether <br /> (MTBE), tert-butanol alcohol (TBA), di-isopropyl ether (DIPE), ethyl tert butyl ether <br /> (ETBE),tert-amyl methyl ether(TAME), 1 ,2-dichloroethane(1,2-DCA)and ethylene <br /> dibromide (EDB) by EPA Method 8260 or full list of chemicals from EPA Method <br /> 624. <br /> 3.4. INFLUENT MONITORING RESULTS <br /> Monthly groundwater GWET system influent sampling was performed on 23 April, 23 May <br /> and 17 June 2013 for laboratory analysis of contaminants listed in Section 2.3. <br /> During all three monthly monitoring events TPH-g were detected in influent water samples <br /> at concentrations as high as 36,000 pg/I. <br /> BTEX constituents were detected from the influent water samples collected during all three <br /> monitoring events at concentrations as high as 2,900 pg/I benzene, 2,500 pg/I toluene, <br /> 600 pg/I ethylbenzene and 4,800 pg/I xylenes. <br /> MTBE was detected in all three influent samples at concentrations as high as 58 pg/l;while <br /> TAME was detected in all three influent samples at concentrations as high as of 59 pg/I. <br /> No other constituents of concern were reported in intermediate samples collected during <br /> the 2nd Quarter 2013 sampling events. <br /> Analytical results of GWET remediation watersamples(CTEL Laboratory I.D. Nos. CT214- <br /> 1304127, -1305157 and -1306106) are summarized in Table 2; laboratory reports are <br /> included in Appendix C; GeoTracker confirmation numbers 4610996305, 2808427929and <br /> 2453454196 confirm the upload of the submitted laboratory electronic deliverable format <br /> (EDF) files. <br /> 3.5. EFFLUENT MONITORING RESULTS <br /> In accordance with the requirements of City of Stockton Department of Municipal Utilities- <br /> Ground Water Discharge Permit, monthly groundwater GWET system effluent sampling <br /> was performed on 23 April, 23 May and 17 June 2013 for laboratory analysis of <br /> contaminants listed in Section 3.3. <br /> Laboratory analysis of groundwater GWET system effluent grab water samples did not <br /> detect any constituents of concern. Analytical results of extraction and treatment effluent <br /> Advanced CeoEnvironmen[al,Inc. <br />