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4 <br /> gallons per minute, or 98,619 gallons per day. During the monitoring period, it is <br /> calculated that the GTF removed approximately 0.987 pounds of VOCs. <br /> On October 26, 2010, the GTF was taken offline for repairs to the air stripper tower <br /> (replacement of packing media) and replacement of a calcified discharge pipe from the <br /> air stripper to the infiltration pond. Del-Tech completed repairs to the GTF, and with the <br /> exception of extraction well EW-3R,the system was brought back online on December <br /> 10, 2010. Extraction well EW-3R is currently offline due to a pump failure. <br /> Influent and Effluent Monitoring—During the monitoring period, effluent samples were <br /> collected monthly in December(the system was offline for repair from October 26 and <br /> December 10, 2010) from the GTF and submitted for analysis of VOCs by EPA Method <br /> 8260B. The December 10, 2010 effluent sample was also analyzed for TDS and 24 <br /> dissolved metals. In addition, an influent sample was collected on December 10, 2010 <br /> and submitted for analysis of VOCs by EPA Method 8260B and turbidity. Table 1, <br /> summarizes the field and analytical results for the GTF during the fourth quarter 2010 <br /> monitoring period. As shown on Table 1, four VOCs were detected in the influent <br /> sample, while no VOCs were detected in any of the effluent samples collected during the <br /> monitoring period. <br /> GLA hopes that the information provided herein is sufficient for your records. If you <br /> have any questions regarding this notification, please call me at(858) 451-1136. <br /> Geologic Associates <br /> 6 <br /> William B. Lo , PG, CHg <br /> Senior Geologist <br /> c: Don Litchfield, BFI <br /> Enclosure: Table 1 —GTF Influent/Effluent Sample Results and Flow Rate <br /> Analytical Results—Test America Laboratories <br /> Field Monitoring Reports—Del Tech <br /> 2 <br />