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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 fourth quarter 2012. Leachate samples were collected on a monthly basis and analyzed in the field for pH, specific conductance, and temperature. In addition to monthly monitoring, leachate is sampled annually during the fourth quarter monitoring period for the parameters listed in Table 2-1. The results of monthly field monitoring measurements and analytical results for the fourth quarter 2012 are presented in Table 3-6. As shown on Table 3-6, 12 dissolved metal constituents were detected; six VOC constituents were detected(four above respective PQLs); and five SVOCs were detected(four above respective PQLs). No pesticides or herbicides were detected in the leachate sample collected during the fourth quarter 2012 monitoring period. Review of the annual 2012 leachate sample data indicates that a quantifiable concentration of 2- ethylphenol (o-cresol)was measured for the first time. Accordingly, verification retesting for this SVOC will be completed during the second quarter 2013. No other new constituents were detected above PQLs in the annual leachate sample. Groundwater Treatment Facility Operations The Groundwater Treatment Facility (GTF) at the Austin Unit has been operational since 1994 to mitigate impacts from landfill releases. Impacted groundwater is extracted from five wells (EW-1, EW-2, EW-3, EW-3R, and E -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 15,833,590 gallons of groundwater at an average flow rate of 178,537 gallons per day. During the monitoring period, it is calculated that the GTF removed approximately 1.57 pounds of VOCs. 3.2 SUMMARY For the Austin Unit, no significant changes in the water quality analytical results were noted. During the fourth quarter 2012 monitoring period, CLs were exceeded in DMP wells AMW-6, AMW-7, AMW-12, AMW-13 and AMW-14. With the exception of the barium concentration measured in well AMW-14, none of the CL exceedances exhibited statistically significant increasing trends. It should be noted, however, that the barium concentration measured in the sample collected from well AMW-14 is within the historical range of values observed at this well. For the CAP wells, trend analyses are performed instead of comparison to CLs. During the current monitoring period, statistically significant increasing trends were noted for three VOC constituents in CAP well AMW-1, while one or more VOC constituents were noted as having decreasing trends in CAP wells AMW-1, AMW-10, and AMW-1913R. The increasing cis-1,2-DCE c:\zoez-002MAaQtz.aoc 13 Geo-Logic Associates