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Water Quality Monitoring Report Forward Landfill calculated for CWLAM constituents (total nitrogen, arsenic, iron, and manganese). As shown on 3- 4, WQPS were exceeded for iron in well AMW-10. In a letter dated April 17, 2017, the RWQCB was notified of the CWLAM CL exceedances and retesting is scheduled for April 2017. 3.1.7 Domestic Well Monitoring Two domestic wells (8106-A and 7898-A) were sampled on March 10, 2017. Table 3-5 summarizes the current analytical results for the domestic well samples collected. Tetrachloroethene was measured above the PQL in both domestic well samples and DCDFM and TCE were also measured above their PQLs in the sample collected from well 8106-A. Estimated trace concentrations of two VOC (each) were also measured in the domestic well samples. 3.1.8 Vadose Zone Monitoring The current vadose-zone monitoring network at the Austin Unit consists of seven lysimeters. The lysimeter locations are shown on Figure 3-1. As shown on Table 2-6, with the exception of FU-05, all of the lysimeters were reported dry or had insufficient soil-pore liquid (10 milliliters) for analysis. As shown in Table 2-613, a quantifiable concentrations of 1,2-dichloroethane, acetone, methyl ethyl ketone, and tert-butyl alcohol were measured in the soil-pore liquid collected from lysimeter FU-05. 3.1.9 Leachate Surface Impoundment Monitoring For the Austin Unit, 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 (West) for evaporation. During the first quarter 2017, leachate was observed at holding areas WMU FU-03, WMU FU-04, WMU FU-05, WMU FU-06, WMU FU-13, and WMU FU-14 and a total of 441,257 gallons of leachate was removed from the lined areas at an average rate of 4,849 gallons per day. For surface impoundment WMU-F (West) Freeboard ranged from approximately 6.33 to 7.33 feet during the first quarter 2017 monitoring period. Appendix A presents copies of the leachate observation logs, freeboard observation logs, and surface impoundment monitoring log. Leachate samples were collected on a quarterly basis and analyzed in the field for pH, specific conductance, temperature, and turbidity. The results of quarterly field monitoring measurements and analytical results for the first quarter 2017 are presented in Table 3-8. 3.1.10 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, stormwater was ® discharged to surface water (North Little Johns Creek) during heavy rain events in January 2017. Project No.S017.1030 I Water Quality Monitoring Report 12 April 2017