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r ) Surface Water Monitoring During the third quarter 2012 monitoring period, surface -water monitoring stations ASW -1 and ASW -2 were sampled on August 27, 2012. Table 3-5 summarizes the current analytical results of surface water samples collected at the Austin Unit. As shown on Table 3-5, no CLs were exceeded and no VOCs were detected in the surface water samples collected during the monitoring period. Leachate Monitoring According to the Operations Manager, no leachate was taken off site during the third quarter 2012. 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 2012. Leachate samples were collected on a monthly basis and analyzed in the field for pH, specific conductance, and temperature. The results of monthly field monitoring measurements are presented in Table 3-6. 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, impacted groundwater is extracted from five wells (EW -1, EW -2, EW -3, EW -3R, and EW -4) that pump groundwater through an air stripper treatment system to remove VOCs. Treated groundwater is discharged to an infiltration pond north of the Austin Road Unit of the Forward Landfill. Due to limited recharge in extraction well EW -3, the well was taken offline and replaced with extraction well EW -3R. To increase the volume of groundwater recovered in this area, well EW -3R was installed adjacent to and deeper than well EW -3. During the monitoring period, the Groundwater Treatment Facility (GTF) treated 23,556,510 gallons of groundwater at an average flow rate of 250,202 gallons per day. During the monitoring period, it is calculated that the GTF removed approximately 1.69 pounds of VOCs. For the Austin Unit, no significant changes in the water quality analytical results were noted. During the third quarter 2012 monitoring period, CLs were exceeded in DMP wells AMW-2, AMW-7, AMW-12, AMW-13 and AMW-14. With the exception of the barium and chloride concentrations measured in well AMW-14, none of the CL exceedances exhibited statistically significant increasing trends. It should be noted, however, that the barium and chloride concentrations measured in the sample collected from well AMW-14 are within the historical range of values observed at this well. For 0:12012-0025\FA3Q12.doc 12 Geo -Logic Associates