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ti <br /> monitoring period, it is calculated that the GTF removed approximately 2.92 pounds of <br /> VOCs. <br /> On January 20, 2012, the GTF was offline for maintenance and repairs, Del-Tech <br /> completed piping repairs to the discharge line that was calcified and also acid washed the <br /> tower and packing media; the system was restarted on January 26, 2012. No other <br /> maintenance work was performed on the GTF during the monitoring period. <br /> Influent and Effluent Monitoring—During the monitoring period, effluent samples were <br /> collected monthly from the GTF and submitted for analysis of VOCs by EPA Method <br /> 8260B. An influent sample was also collected on March 28, 2012 and submitted for <br /> analysis of VOCs by EPA Method 8260B. Table 1, summarizes the field and analytical <br /> results for the GTF during the first quarter 2012 monitoring period. As shown on <br /> Table 1, six VOCs were detected in the influent sample with five above the practical <br /> quantitation limit. Three estimated trace-level VOCs were detected in the effluent <br /> samples collected during the monitoring period. However, none of the VOCs exceeded <br /> Federal or State drinking water standards. <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 /> William B. pez, 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—BC Laboratories <br /> Field Monitoring Reports—Del Tech <br /> CA2012-0026CTFmonrpt1Q12.docz 2 Geo-Logic Associates <br />