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' 11 January 2006 <br /> AGE-NC Project No 95-0130 <br />' Page 7 of 14 <br />' MTBE was detected in the July and August 2005 influent SVE air flow samples at concentrations <br /> of 26 µg/l and 16 pg/l, respectively, MTBE was not detected in any of the above effluent air flow <br /> samples <br />' Analytical results of SVE air samples are summarized in Table 5 GeoTracker confirmation pages <br /> of the submitted laboratory electronic deliverable format (EDF) files are included in Appendix C <br />' A plot of laboratory analysis of SVE influent TPH-g air stream concentrations versus time is <br /> included with Appendix E The laboratory reports (CTEL Project Nos 0507-089, 0508-005 and <br /> 0509-046) and chain of custody forms are presented in Appendix F <br /> I <br /> 3 3 3 MASS CALCULATION OF RECOVERED PRODUCT <br />' The hydrocarbon mass removed during the SVE operating period was calculated using the equation <br /> M = C•Q•t <br />' where M =cumulative mass recovered (kg) <br /> C =vapor concentration (kg/m3) <br /> Q = extraction flow rate (M3/hr) <br /> t =operational period, in hours <br /> Between 22 June 2005 and 07 September 2005, the SVE unit operated a total of 1,848 hours <br /> (Table 6) The average analytical results (approximately 2,500 µg/l) of the influent SVE air flow <br />' samples (Table 5), average diluted SVE influent flow rates (approximately 59 scfm, Table 6) and <br /> the operational period (1,848 hours) were used to calculate the approximate mass of extracted <br /> gasoline during this period <br /> During the third quarter 2005 operational period, the mass of hydrocarbons extracted by the SVE <br /> system was calculated to be approximately 1,570 pounds, or equivalent to a volume of 251 gallons <br /> of gasoline Added to the estimated 2340 gallons of hydrocarbons extracted from the SVE system <br /> since 31 August 2004 (start-up), the total volume of hydrocarbons extracted to date is estimated at <br /> 2,591 gallons (Table 7) A plot of the cumulative mass (pounds) of hydrocarbons extracted to date <br /> I is included in Appendix E, the volume/mass calculations for extracted hydrocarbons are included <br /> with Appendix G <br /> 4.0 INTERIM GROUND WATER EXTRACTION REMEDIATION <br /> Between 03 June 2004 and 07 September 2005, interim remediation ground water P&T system was <br /> • continuously operated at the site The ground water treatment operation and maintenance procedures <br /> Advanced GeoEnvironmental,Inc <br />