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3.1.7 Surface Water Monitoring Surface-water sampling was conducted at surface-water monitoring station ASW-1 on August 10, 2009, while surface water station ASW-2 was dry during the sampling event. Table 3-4 summarizes the current analytical results for surface water samples collected at the Austin Unit. As shown on Table 3-4, no VOCs were detected at surface water station ASW-1 during the third quarter 2009 monitoring period. 3.1.8 Leachate Monitoring According to the Operations Manager, no leachate was taken off site during the third quarter 2009. The leachate collection system, which collects leachate from the north face of the landfill, has been operational since November 1996. WQPS (concentration limits) are not required for leachate because it is collected and removed for disposal,rather than discharged. According to the Operations Manager, the LCRS operated effectively during the third quarter 2009. Leachate samples were collected from the pond on a monthly basis and analyzed in the field for pH and specific conductance. The results of monthly field monitoring measurements are presented in Table 3-6. 3.1.9 Groundwater Treatment Facility Operations The Groundwater Treatment Facility(GTF) at the Austin Unit has been operational since 1994 to mitigate impacts from landfill releases. Currently, contaminated groundwater is extracted from three wells (EW-1, EW-2, EW-3, and EW-4), treated, and discharged to an infiltration pond. During the monitoring period, the GTF treated 17,100,320 gallons of groundwater at an average flow rate of 139 gallons per minute, or 199,803 gallons per day. During the monitoring period, it is calculated that the GTF removed approximately 2.59 pounds of VOCs. Due to poor recharge and backpressure from the GTF, Forward Landfill Inc. completed construction of extraction well EW-313, in August 2009. Extraction well EW-3 was taken offline and connected to a 1,500 gallon poly tank. Groundwater from the poly tank is transferred manually to the GTF, as needed. Extraction well EW-313 is anticipated to be brought online during the fourth quarter 2009. 3.2 SUMMARY Groundwater quality conditions beneath the Austin Unit during the third quarter 2009 monitoring period were generally similar to historical results. CLs were exceeded in DMP wells AMW-6, AMW-7, AMW-13, and AMW-14, and with the exception of the barium concentration measured in well AMW-14, none of the CL exceedances exhibited statistically significant increasing trends. Of note, the barium concentration measured in well AMW-14 (0.24 mg/L)is similar to the historical results measured in this well and is well below the California primary drinking water standard (1 mg/L). In the CAP wells, trend analyses are performed instead of comparison to CLs. During the current D:\2009_0017\FA_3Q09.doc 12 Geologic Associates