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I12 July 2006 <br /> . AGE-NC Project No 95-0130 <br />' Page 7 of 14 <br /> MTBE was detected in the March 2006 influent SVE air flow sample at a concentration of 10 µg11, <br />' MTBE was not detected in any of the above effluent air flow 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 0601-020, 0602-052 and <br /> 0603-083) and chain of custody forms are presented in Appendix F <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 /> I where M =cumulative mass recovered (kg) <br /> C = vapor concentration (kg/m3) <br /> Q= extraction flow rate (m3/hr) <br /> lie t= operational period, in hours <br /> Between 07 December 2005 and 14 March 2006, the SVE unit operated a total of 2,243 hours <br /> (Table 6) The average analytical results (approximately 1,567µg/1) of the influent SVE air flow <br /> samples (Table 5), average diluted SVE influent flow rates (approximately 90 scfm, Table 6) and <br /> the operational period (2,243 hours) were used to calculate the approximate mass of extracted <br /> gasoline during this period <br /> During the first quarter 2006 operational period, the mass of hydrocarbons extracted by the SVE <br /> system was calculated to be approximately 1,178 pounds, or equivalent to a volume of 188 gallons <br /> of gasoline Added to the estimated 2,710 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 /> 2,898 gallons (Table 7) A plot of the cumulative mass (pounds) of hydrocarbons extracted to date <br /> is included in Appendix E, the volume/mass calculations for extracted hydrocarbons are included <br /> with Appendix G <br /> I4.0 INTERIM GROUND WATER EXTRACTION REMEDIATION <br /> Between 06 December 2005 and 14 March 2006, interim remediation ground water P&T system <br /> was continuously operated at the site The ground water treatment operation and maintenance <br /> procedures for the site were outlined in AGE's Interim Remediation Work Plan - May 2003, dated <br /> IAdvanced Gcohnvironmental,inc <br />