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Water Quality Monitoring Report Forward Landfill 0 3.1.6 Cannery Waste Land Application Monitoring Field and laboratory results for CWLAM wells for the fourth quarter 2015 monitoring period are summarized in Table 3-4 and were compared to Water Quality Protection Standards (WQPS) calculated for CWLAM constituents (total nitrogen, arsenic, iron, and manganese). As shown on 3-4, no WQPS were exceeded during the fourth quarter 2015 monitoring period. 3.1.7 Domestic Well Monitoring Two domestic wells (7898-A and 8106-A) were sampled on October 29, 2015. Table 3-5 summarizes the current analytical results for the domestic well samples collected. Tetrachloroethane was measured above the PQL in both domestic well samples and DCDFM and TICE were also measured above their PQLs in the sample collected from well 8106-A. Estimated trace concentrations of two VOCs were also measured in the samples from each domestic well. 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 2-5, with the exception of FU -04W, all of the lysimeters were reported dry. However, there 40 was insufficient soil -pore liquid (7 milliliters) collected from FU -04W for analysis. 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 fourth quarter 2015, 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 1,723,300 gallons of leachate was removed from the lined areas at an average rate of 1,873 gallons per day. For surface impoundment WMU-F (West) Freeboard ranged from approximately 6.33 to 7.25 feet during the fourth quarter 2015 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. In addition to quarterly monitoring, leachate is sampled annually during the fourth quarter monitoring period for the parameters listed in Table 2-1. The results of quarterly field monitoring measurements and analytical results for the fourth quarter 2015 are presented in Table 3-7. As shown on Table 3-7, seven VOCs were detected in the Austin Unit leachate sample. M:\ 2015.0014\FA_4Q15.docx 13 1/29/2016, Rev. 0