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® Surface Water Monitoring Site run-on and run-off control facilities are designed to effectively channel surface water to site stormwater/sedimentation ponds. According to the Operations Manager, there were no discharges to surface water during the reporting quarter. Samples were collected from surface water monitoring stations FSW-1 (downstream)and FSW-2 (upstream) on May 23, 2013 for the second quarter monitoring period. Table 2-7 summarizes the current analytical results of surface water samples collected at the Forward Unit. As shown on Table 2-7, with the exception of an estimated-trace concentration of acetone at upstream surface water monitoring stations FSW-2, no VOCs were detected in either sample. Analytical results for the surface water samples are generally similar, suggesting that landfill operations are not impacting surface water quality. 2.2 SUMMARY Groundwater quality conditions beneath the Forward Unit during the second quarter 2013 monitoring period are generally similar to those observed in previous monitoring periods. During the second quarter 2013 monitoring period,non-statistical exceedances for VOCs were identified at wells MW-2A and MW-10. Trend analyses indicate a statistically significant increasing temporal trend for DIPE at well MW-2A, though no other statistically significant increasing temporal trends were identified for VOCs. For the ® inorganic monitoring parameters, CLs were exceeded for constituent concentrations in wells MW-2A, MW-13,MW-14, MW-15, and background well MW-24. Statistically significant increasing temporal trends were identified for nitrate-N concentrations in well MW-14, for sulfate concentrations in well M -15, and for sodium concentrations in background well MW-24. Previously submitted NRDs for these common inorganic constituents at the Forward Unit have concluded that the CL exceedances are not the result of a release from the Forward Unit. The increasing trend at background well MW-24 suggests increasing sodium concentrations upgradient of the site. Surface water samples collected from the upstream and downstream surface water monitoring stations during the second quarter 2013 monitoring period are generally consistent with each other. One VOC (acetone)was detected at a trace concentration in the sample from upstream surface water monitoring station FSW-2. No other VOCs were detected in second quarter 2013 surface water samples. 3.0 AUSTIN UNIT 3.1 WATER QUALITY MONITORING Sampling and Laboratory Analyses During the second quarter 2013, depth-to-water measurements were recorded in the groundwater monitoring wells and samples were collected from all groundwater C:�1013-0021\FA_2Q13.doc 7 Geo-Logic Associates