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Water Quality Monitoring Report Forward Landfill in the vicinity of well MW -17. Surface water stations were reported dry during the fourth quarter 2015 monitoring period. Vadose zone monitoring stations were also reported dry or had an insufficient volume of soil -pore liquid to sample. 3.1 Water Quality Monitoring 3.1.1 Sampling and Laboratory Analyses Del -Tech performed routine monitoring of DMP, CAP, EMP wells at the Austin Unit during the fourth quarter 2015 monitoring period. Depth -to -water measurements were recorded in the groundwater monitoring wells on October 28, 2015. With the exception of wells located within the California Department of Corrections Facility (CDCF) (AMW- 22S, AMW-22, and AMW-28), groundwater and leachate sampling was performed between October 28 and November 4, 2015. Due to security restrictions, wells within CDCF, could not be sampled until December 15, 2015. During the monitoring period both surface water stations were reported dry, and Del -Tech reported that groundwater monitoring wells AMW-5R and AMW-18 were dry. Samples were collected from each sample point with sufficient liquid and submitted to BC for analysis of the routine monitoring parameters stipulated in RWQCB Order No. 115- 2014-0006. Table 2-1 presents the monitoring schedule and summarizes the analytical methods utilized during the current monitoring period. Wells AMW-1, AMW-7, AMW- 10, and AMW-13 were also sampled for total arsenic, nitrogen, iron, and manganese for the CWLAM program. Water quality samples were also analyzed in the field for ORP, turbidity, temperature, specific conductance, and pH and recorded on well data sheets. The groundwater monitoring wells, surface water monitoring locations, and leachate were sampled in accordance with the sampling and analysis plan detailed in Appendix E. The well data sheets, raw laboratory data, certificates of analyses, and chain -of -custody records related to the sampling program are included in Appendix F. Field and laboratory analyses are summarized in Tables 3-1 through 3-7 and cumulative tabulated data for all monitoring points and constituents for groundwater, unsaturated zone, leachate, and surface water are presented in Appendix F. 3.1.2 QA/QC Results The QA/QC program completed for the fourth quarter 2015 water quality monitoring event at the Austin Unit included analyses of four trip blanks, one field blank, laboratory method blanks, and one duplicate sample (well AMW-30). The field and trip blanks were analyzed for VOCs by EPA Method 8260 and method blanks were analyzed for all required analyses. The results of the QA/QC program indicate that no VOCs were detected in the blank samples. Inorganic constituents including calcium, magnesium, M:\ 2015.0014\FA_4Q15.docx 10 1/29/2016, Rev. 0