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Water Quality Monitoring Report Forward Landfill 40 2.1.5 Vadose Zone Monitoring C The current vadose-zone monitoring network at the Forward Unit consists of 10 lysimeters (seven suction lysimeters and three pan lysimeters). These lysimeter locations are shown on Figure 2-1. As shown on Table 2-6, the pan lysimeters were reported dry or there was an insufficient volume of soil -pore liquid (:510 mL) for collection of samples from the suction lysimeters. 2.1.6 Leachate/Surface Impoundment Monitoring Leachate sumps and surface impoundments are inspected 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 first quarter 2016, leachate was observed at holding areas WMU D-93/94, WMU D-01 N/S, and WMU D-02 and a total of 116,400 gallons of leachate was removed from the lined areas at an average rate of 1,279 gallons per day. For surface impoundment WMU-F (North), freeboard ranged from approximately 6.08 to 8.00 feet during the first quarter 2016 monitoring period. Appendix A presents copies of the leachate observation logs, and freeboard observation logs. Due to a change in staff at the Forward Landfill, the weekly surface impoundment monitoring was not performed for the first quarter 2016 monitoring period. Forward is aware of the requirement and has resumed weekly monitoring. Leachate samples are analyzed in the field for pH, specific conductance, temperature, and turbidity on a quarterly basis. In addition to the quarterly leachate monitoring, the compost pond was sampled for the annual list of parameters listed in Table 2-1. Results of quarterly field monitoring measurements for the first quarter 2016 and annual compost pond analytical results are presented in Table 2-7. As shown in Table 2-7, one VOC (acetone) was detected in the compost pond sample. 2.1.7 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 from the Forward Unit to surface water during the reporting period. Surface water monitoring stations FSW-1 (downstream) and FSW-2 (upstream) were sampled on March 15, 2016 for the first quarter 2016 monitoring period. Table 2- 8 summarizes the current analytical results of surface water samples collected at the Forward Unit. As shown on Table 2-8, similar concentrations were measured in both up and downstream samples and no VOCs were detected in either sample. Furthermore, no CLs were exceeded at downstream point FSW-1. M:\ 2016.0007\FA iQ16.docx 8