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WMU D-88 A/B. Freeboard at WMU F ranged from approximately 4.4 to 10.83 feet during the 2012 monitoring year. The results of the annual leachate sample collected during the fourth quarter 2012 indicate that there were no new COCs identified. Value Engineering conducted a gat test of the leachate collection and removal system (LCRS) on September 7, 2012 at the Forward Unit. The test results indicate that an open- air conduit is present across the LCRS units, and no excessive leachate is backed up in the drainage layer or sump of the LCRS units. 4.5 AUSTIN UNIT Groundwater Groundwater elevations measured during the 2012 monitoring year generally reflect seasonal precipitation patterns. Hydrographs depicting historical groundwater elevations are presented in Appendix D and indicate generally static trends. During the 2012 monitoring year groundwater flow was generally directed to the north and northeast. However, in addition to a north and northeast flow direction groundwater flow was also to the northwest during the second quarter and to the northwest and east during the third quarter. Groundwater generally flowed at a gradient between 0.001 ft/ft to 0.004 ft/ft below the Austin Unit in 2012. Groundwater quality conditions beneath the Austin Unit during the 2012 monitoring year are generally similar to those observed in the previous monitoring year. For DMP wells, CLs were consistently exceeded during the 2012 monitoring year at wells AMW-13 and AMW-14; and intermittently in wells AMW-2 (background), AMW-6, AMW-7, and AMW-12. Both wells AMW-13 and AMW-14 consistently contained VOCs at concentrations greater than PQLs. In the CAP wells, VOCs were consistently detected in wells AMW-1,AMW-10, and AMW-19BR at concentrations exceeding the PQL, and during one quarter at wells AMW-4 and AMW-19. Trend analyses indicate increasing trends were noted for several VOC constituents in well AMW-1. The increasing trend exhibited for cis-1,2-DCE at well AMW-1 suggests reductive dechlorination is occurring in the vicinity of this well. Decreasing concentration trends were noted for VOC constituents (for at least two quarters) during the 2012 monitoring year at wells AMW-1, AMW-4, AMW-5R, AMW-10, AMW-11, and AMW-19BR. In response to continued detection of VOCs in groundwater downgradient of the Austin Road Unit, the RWQCB issued a CAO on December 8, 2008. Forward has installed 19 additional groundwater monitoring wells downgradient of the Austin Unit as part of an on-going EMP investigation. Surface Water Surface water samples were collected quarterly(except the first quarter 2012; dry) from surface water stations ASW-1 and ASW-2 during the 2012 monitoring year. No VOCs were detected in surface water samples collected over the year. Although, CLs were c:\zou-0025\FAaQlz.aoc 16 Geo-Logic Associates