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n Water Quality Monitoring Report Forward Landfill Notes: * - Measured at an estimated -trace concentration. 4.4.2 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 2016 monitoring year. With the exception of the first quarter 2016, the surface water stations were reported dry. Comparisons of the water quality data from upgradient (FSW-2) and downgradient (FSW-1) surface water stations during the 2016 monitoring year indicates similar concentrations and no VOCs were detected suggesting that landfill operations are not impacting surface water quality. 4.4.3 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 North) for evaporation. During the 2016 monitoring year, leachate was observed at all of the holding areas except WMU D-87 and WMU D-88 A/B and according to the Operations Manager, no leachate was taken off site during the 2016 monitoring year. Freeboard at WMU-F North ranged from approximately 6.08 to 9.58 feet during the 2016 monitoring year. Value Engineering conducted a continuity test of the leachate collection and removal system (LCRS) on August 27 and 28, 2016 at the Forward Unit (Appendix A). The tracer dye test results indicate that continuity is present across the LCRS units WMU-F North, and no excessive leachate is backed up in the drainage layer or sump of the LCRS units. Additionally, an annual inspection of each sump was performed by Del -Tech on July 30, 2016 and the results of the inspection were submitted to the RWQCB on August 5, 2016. 4.5 Austin Unit 4.5.1 Groundwater Groundwater elevations measured during the 2016 monitoring year generally reflect seasonal precipitation patterns. Hydrographs depicting historical groundwater elevations are presented in Appendix G and indicate generally static trends with some declines over the past four years. Project No. 2016.0007 1 Water Quality Monitoring Report 18 January 2017 2016 WELL CONSTITUENT MONITORING PERIOD MW -2A 1,1 -DCA*, cis-1,2-DCE* 4Q16 MW -16 DIPE MW -17 Carbon Tetrachloride, Chloroform, TCFM* Notes: * - Measured at an estimated -trace concentration. 4.4.2 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 2016 monitoring year. With the exception of the first quarter 2016, the surface water stations were reported dry. Comparisons of the water quality data from upgradient (FSW-2) and downgradient (FSW-1) surface water stations during the 2016 monitoring year indicates similar concentrations and no VOCs were detected suggesting that landfill operations are not impacting surface water quality. 4.4.3 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 North) for evaporation. During the 2016 monitoring year, leachate was observed at all of the holding areas except WMU D-87 and WMU D-88 A/B and according to the Operations Manager, no leachate was taken off site during the 2016 monitoring year. Freeboard at WMU-F North ranged from approximately 6.08 to 9.58 feet during the 2016 monitoring year. Value Engineering conducted a continuity test of the leachate collection and removal system (LCRS) on August 27 and 28, 2016 at the Forward Unit (Appendix A). The tracer dye test results indicate that continuity is present across the LCRS units WMU-F North, and no excessive leachate is backed up in the drainage layer or sump of the LCRS units. Additionally, an annual inspection of each sump was performed by Del -Tech on July 30, 2016 and the results of the inspection were submitted to the RWQCB on August 5, 2016. 4.5 Austin Unit 4.5.1 Groundwater Groundwater elevations measured during the 2016 monitoring year generally reflect seasonal precipitation patterns. Hydrographs depicting historical groundwater elevations are presented in Appendix G and indicate generally static trends with some declines over the past four years. Project No. 2016.0007 1 Water Quality Monitoring Report 18 January 2017