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26 August 2013 AGE Project No. 95-0130 Page 8 of 9 • Generally, total SVE inlet flow rates averaged 67 cubic feet per minute (Table 2). • The 2nd quarter 2013 mass of hydrocarbons extracted by the SVE system was calculated to be 175 pounds (equivalent to 28 gallons) of petroleum hydrocarbons (Appendix D; Table 3). • Total petroleum hydrocarbon SVE extraction rates were estimated to be approximately 1-4 pounds/day. • Since initiation of the SVE system in November 2004, the adjusted total mass extracted of petroleum hydrocarbons is calculated at 24,663 pounds. The results of GWET groundwater remediation between March and June 2013 are as follows: • Approximately 202,430 gallons of hydrocarbon-impacted groundwater were extracted from remediation wells EWA VW-1C, VW-2A and VW-3A (Table 1). • Since March 2011, dissolved influent TPH-g concentrations have generally been detected between 15,000 pg/I and 55,000 pg/I. Generally, the average dissolved influent TPH-g concentrations have declined over the past year(i.e. four quarters). However, the average dissolved influent TPH-g concentration did slightly increase from 23,333 pg/I to 24,667 between the 1s` and 2nd quarters 2013, respectively. • BTEX, MTBE and TAME concentrations fluctuated within normal ranges and no trend was evident. A plot of the influent TPH-g concentrations versus time is included in Appendix F. • An estimated 37 pounds of total petroleum hydrocarbons were extracted from groundwater during the 2nd Quarter 2013. • Since initiation of the GWET system in November 2004, the total volume of petroleum hydrocarbon-impacted water extracted is approximately 5,475,106 gallons (Table 4), while the mass of petroleum hydrocarbons removed from the above total volume is estimated to be 1,329 pounds of dissolved petroleum hydrocarbons. • Dissolved total petroleum hydrocarbons were extracted by the GWET remediation system at rates between 0.30 and 0.62 pounds/day. Advanced CeoEnvironmenlal,Inc.