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' 30 March 2005 <br /> . AGE-NC Project No 95-0130 <br />' Page 7 of 13 <br />' of the submitted laboratory electronic deliverable format (EDF) files are included in Appendix D <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 0410-013, 0410-098, 0411- <br /> 176, <br /> 410-013, 0410-098, 0411-176,0412-186 and CAL Reference No 7454)and chain of custody forms are presented In Appendix <br /> F <br /> I3 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 01 October 2004 and 22 December 2004, the SVE unit operated a total of 1,968 hours <br />�. (Table 6) The average analytical results (approximately 24,660 µg/1) of the influeni SVE air flow <br /> samples (Table 5), average diluted SVE influent flow rates (approximately 39 scfm, Table 6) and <br /> I the operational period (1,968 hours) were used to calculate the approximate mass of extracted <br /> gasoline during this period <br /> During the fourth quarter 2004 operational period, the mass of hydrocarbons extracted by the SVE <br /> system was calculated to be approximately 7,088 pounds,or equivalent to a volume of 1,134 gallons <br /> of gasoline A plot of the cumulative mass (pounds) of hydrocarbons extracted to date is included <br /> I in Appendix G, the volume/mass calculations for extracted hydrocarbons are included with <br /> Appendix H <br /> I4.0 GROUND WATER EXTRACTION-TREATMENT REMEDIATION <br /> Between 17 November 2004 and 29 December 2004,a ground water extraction and treatment system <br /> was initiated and continuously operated at the site as ground water interim remediation The ground <br /> water treatment operation and maintenance procedures for the site were outlined in AGE's Interim <br /> Remediation Work Plan -May 2003, dated 21 May 2003 <br /> I <br /> Advanced GeoEnvironmental,Inc <br /> I <br />