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I , 26 August 2013 AGE Project No. 95-0130 Page 7 of 9 water samples (CTEL Laboratory I.D. Nos.CT214-1304127, -1305157 and -1306106) are summarized in Table 2; laboratory reports are included in Appendix C; GeoTracker confirmation numbers 4610996305, 2808427929 and 2453454196 confirm the upload of the submitted laboratory electronic deliverable format (EDF) files. Utilizing a 1-inch diameter, Master Meter's flow meter, total flow (totalizer) was recorded between 18 March and 17 June 2013 (Table 1). During this time, the extraction and treatment interim groundwater remediation system was in operation for approximately 91 days. Based on the total of approximately 202,430 gallons of water recorded during this time,AGE estimated that an average 2,225 gallons ofwaterwas discharged per day during this time. 3.6. MASS-VOLUME REMOVAL CALCULATIONS During the 2nd quarter 2013,an estimated 37 pounds of total petroleum hydrocarbons were extracted from groundwater(Table 4). As the system was initiated on 17 November 2004, a total mass of 1,329 pounds of petroleum hydrocarbons have been removed by GWET operations. The 2nd quarter 2013 mass-volume calculations of gasoline-impacted groundwater extracted from the groundwater extraction and treatment system are presented in Appendix E. Plots of cumulative groundwater pump and treat mass removal trends and influent groundwater TPH-g concentrations versus time are included in Appendix F. 4.0. SUMMARY & CONCLUSIONS Based on SVE remediation data collected between March and June 2013,AGE concludes: • TPH-g were detected in influent soil-vapor samples concentrations between 110 pg/I and 200 pg/I (Table 1); TPH-g were not detected in any of the effluent samples. A plot of the influent TPH-g concentrations versus time is included in Appendix B.Generally, influentTPH-g soil-vapor concentrations have been reported at concentrations between 110 pg/I and 360 pg/I since November 2012. • BTEX constituents were detected in influent soil-vapor samples at concentrations as high as 4.6 pg/I total xylenes (Table 1). No BTEX constituents were detected during the June 2013 sample. BTEX constituents were not detected in any of the effluent air flow samples. • MTBE was not detected in any SVE samples during the 2nd quarter; MTBE has not been detected in any SVE samples collected from the site since October 2008. Advanced CeoEnvironmental,Inc.