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Water Quality Monitoring Report Forward Landfill AMW-5R Bicarbonate,Calcium 4Q17 AMW-12 Nitrate As has been the case historically, several CL exceedances were noted for well AMW-6, during the 2017 monitoring year. In addition, PCE was consistently detected at quantifiable concentrations in wells AMW-6 and AMW-12. As discussed previously, well AMW-6 was identified as a DMP well in the new WDR and Forward has requested that well AMW-6 be reclassified as a CAP well. In the CAP/EMP wells, 18 of 30 CAP/EMP wells reported one or more VOCs exceeding a PQL during the 2016 monitoring year, with CAP wells AMW-1 and AMW-22S having the greatest number and highest concentration of VOCs. An annual report discussing the CAP and EMP monitoring results including a comprehensive discussion of corrective actions taken or planned was prepared by Geo-Logic Associates (GLA, 2016) and is included in Appendix H. In response to continued detection of VOCs in groundwater downgradient of the Austin Road Unit, the RWQCB issued CAO R5-2017-0703 on April 10, 2017. Forward is in the process of installing 12 additional groundwater monitoring wells and one additional groundwater extraction well downgradient of the Austin Unit as part of an on-going EMP investigation. 4.5.2 Surface Water Site run-on and run-off control facilities are designed to effectively channel surface water to lined holding and evaporation ponds on site. According to the Operations Manager, no surface water was discharged from the facility during the 2017 monitoring year. Comparisons of the water quality data from upgradient (ASW-1) to downgradient (ASW-2) surface water stations during the 2017 monitoring year indicates similar concentrations and no VOCs were detected suggesting that landfill operations are not impacting surface water quality. 4.5.3 leachate Monitoring Leachate sumps are inspected for the presence of leachate and observations are recorded at least weekly by Forward Landfill personnel. If leachate is detected in a sump it is pumped into the surface impoundment (WMU-F West) for evaporation. During the 2017 monitoring year, leachate was observed at all of the holding areas. According to the Operations Manager, no leachate was taken off site during the 2017 monitoring year. Freeboard at WMU-F West ranged from approximately 3.4 to 12.8 feet during the 2017 monitoring year. Value Engineering conducted a continuity test of the leachate collection and removal system (LCRS) on August 11 and 12, 2017 at the Austin Unit (Appendix A). The tracer dye test results indicate that continuity is present across the LCRS unit WMU-F West, and no excessive leachate is backed up in the drainage layer or sump of the LCRS unit. Additionally, an annual inspection Project No.5017.1030 I Water Quality Monitoring Report 18 January 2018