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' 3 SOIL VAPOR EXTRACTION SYSTEM MONITORING <br /> On behalf of PSC, ETIC performed weekly air monitoring on the SVE system during <br /> this past quarter starting with the November 9, 2005 weekly event Kleinfelder <br /> performed the weekly events through November 2, 2005 This report summarizes the <br /> data generated during this period The data are presented in the following sections <br /> i Summary tables for contaminant removal results and air emission results are included <br /> in Tables 5 and 6 The most current field data sheet is included in Appendix C The <br /> ! most current laboratory analytical report is included in Appendix D <br /> i <br /> 3.1 Air Monitoring Procedures <br /> During system operation, airflow rates are measured weekly in sparging well <br /> SP-1 and in venting wells VW-1 and MW-2 Flow rates are adjusted as <br /> necessary Volatile organic compound (VOC) vapors are measured from the <br /> 1 sample ports of the influent stream, the first carbon vessel effluent stream <br /> (GAC-1), and from the second carbon vessel effluent stream (GAC-2) with a <br /> Photo-ionization Detector (PID) Air vapors are then collected from the same <br /> Iports in Tedlar bags for laboratory analysis The samples were analyzed by <br /> GD Air Testing for BTEX and TPH-g by EPA Method TO-14 The samples <br /> for the November 16, 2005 event were inadvertently submitted to Calscience <br /> Environmental Laboratories for analysis <br /> 1 i 3.2 BTEX and TPH-g Analytical Results <br /> Benzene, toluene, ethylbenzene, xylenes, and/or TPH-g were detected in the <br /> influent air sample for each event The concentrations decreased significantly <br /> or were non-detect in the final effluent sample "GAC-2" for each event <br /> There were no data for sample "Influent" to report for the weekly event on <br /> August 23, 2005, due to the Tedlar bag popping during shipment There were <br /> no sample data to report for the weekly events from August 31, 2005 through <br /> September 21, 2005, due to system repairs There were no data for sample <br /> I "GAC-2" to report for the weekly event on October 20, 2005, due to the <br /> Tedlar bag popping during shipment Therefore, the value for the October 20, <br /> 2005 effluent air sample "GAC-1" was used in presenting the effluent <br /> concentration data on Table 6 <br /> I <br /> 3.3 Contaminant Removal and Air Emission Results <br /> L' The current total mass of TPH-g removed from the soil is estimated at 190 <br /> pounds, which is approximately 56% of the initial estimated amount released <br /> CThe overall mean influent TPH-g rate was 3 17 lbs/day, while the average <br /> l L1 g <br /> Quarterly Groundwater Momtonng Report <br /> 4th Quarter-November 2005 <br /> Prepared for SARA LEE BAKERY GROUP,INC Prepared by PSC EnvEronmental Services <br /> ' �I Envest%attve and Quarterly[report 14th Quarterly Report 11_2005 doc February 24,2006 <br />