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measured above a PQL in August 2008 including, dicamba at well AMW-4 and sulfide in well AMW-10. Of note, no COCs exceeded Federal or State MCLs. 3.1.9 Leachate Monitoring According to the Operations Manager, no leachate was taken off site during the second quarter 2008. 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 second quarter 2008. Leachate samples were collected from the holding pond on a monthly basis and analyzed in the field for pH and specific conductance. Results of monthly field monitoring measurements for the second quarter 2008 are presented in Table 3-6. 3.1.10 Groundwater Treatment Facility Operations The Groundwater Treatment Facility (GTF) at the Austin Unit has been operational since 1994 to mitigate impacts from landfill releases. At the GTF, contaminated groundwater is extracted by two wells (EW -1 and EW -2), treated, and discharged to an infiltration pond. Between April 1, 2008, and June 30, 2008, the GTF operated for 2,161 hours at 99.0 percent uptime, and treated 25.793 million gallons of groundwater at an average flow rate of 195 gallons per minute, or 0.281 million gallon per day. During this period, the GTF removed approximately 2.3 pounds of VOCs. (CH2M Hill, 2008). 3.2 SUMMARY Groundwater quality conditions beneath the Austin Unit during the second quarter 2008 monitoring period are generally similar to historical results. CLs were exceeded in DMP wells AMW-2, AMW-6, AMW-7, AMW-13, and AMW-14. However, none of the CL exceedances exhibited statistically significant increasing trends. In the CAP wells, trend analyses are performed instead of comparison to CLs. During the current monitoring period, one or more statistically significant increasing trends were noted for VOC constituents in CAP wells AMW-1, AMW-10, and AMW-19, while decreasing VOC trends were noted in CAP wells AMW-1, AMW-4, AMW-10, and AMW-11. The increasing cis-1,2-DCE trends in wells AMW-1 and AMW-10 suggest that active reductive dechlorination is occurring in the vicinity of this well. The results of COC sampling during the second quarter 2008 monitoring period indicates that excluding metals which may be naturally occurring, only a few COCs were detected in groundwater samples and no organic COCs were detected in the surface water samples at the Austin Landfill Unit. Trace level concentrations of bis(2-ethylhexyl)phthalate were measured in the samples collected from wells AMW-6, AMW-7, AMW-5R, and AMW- 19BR. However, this compound is a common field/laboratory contaminant associated with plastics. Dicamba was detected above the PQL in the sample collected from D:12008_0010\FA_2Q08.doc 14 Geologic Associates