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Water Quality Monitoring Report
<br /> Forward Landfill
<br /> 23R is attributed to background conditions. Surface water sampling locations were dry
<br /> and no VOCs were detected in soil-pore liquid samples during the monitoring period.
<br /> 3.0 AUSTIN UNIT
<br /> 3.1 Water Quality Monitoring
<br /> 3.1.1 Sampling and Laboratory Analyses
<br /> Del-Tech performed routine monitoring of DMP, CAP, EMP wells at the Austin Unit
<br /> during the second quarter 2014 monitoring period. Depth-to-water measurements
<br /> were recorded in the groundwater monitoring wells on April 17, 2014. Groundwater,
<br /> surface water, and leachate sampling was performed on April 17 and 18, 2014. Due to
<br /> access restrictions,wells AMW-14,AMW-19BR, AMW-225,AMW-22, AMW-24SR,AMW-
<br /> 24R, AMW-25,AMW-26R, and AMW-28 were sampled later, on lune 3 and 4, 2014. Due
<br /> to pump failure, a sample could not be collected from well AMW-6 during the
<br /> monitoring period.
<br /> Samples were collected from each sample point with sufficient liquid and submitted to
<br /> BC for analysis of the routine monitoring parameters stipulated in RWQCB Order No. 115-
<br /> 2014-0006. Table 2-1 presents the monitoring schedule and summarizes the analytical
<br /> methods utilized during the current monitoring period. Wells AMW-1, AMW-7, AMW-
<br /> 10, and AMW-13 were also sampled for total arsenic, nitrogen, iron, and manganese for
<br /> the CWLAM program. Water quality samples were also analyzed in the field for ORP,
<br /> turbidity, temperature, specific conductance, and pH and recorded on well data sheets.
<br /> The groundwater monitoring wells, surface water monitoring locations, and leachate
<br /> were sampled in accordance with the sampling and analysis plan detailed in Appendix E.
<br /> The well data sheets, raw laboratory data, certificates of analyses, and chain-of-custody
<br /> records related to the sampling program are included in Appendix F. Field and
<br /> laboratory analyses are summarized in Tables 3-1 through 3-7 and cumulative tabulated
<br /> data for all monitoring points and constituents for groundwater, unsaturated zone,
<br /> leachate, and surface water are presented in Appendix F.
<br /> 3.1.2 QA/QC Results
<br /> The QA/QC program completed for the second quarter 2014 water quality monitoring
<br /> event at the Austin Unit included analyses of three trip blanks, one field blank, one
<br /> equipment blank, laboratory method blanks, and one duplicate sample (well AMW-11).
<br /> The field, equipment, and trip blanks were analyzed for VOCs by EPA Method 8260 and
<br /> method blanks were analyzed for all required analyses. The results of the QA/QC
<br /> program indicate that no VOCs were detected in the blank samples. Inorganic
<br /> constituents including chloride, calcium, potassium, magnesium, sodium, and sulfate
<br /> were measured at trace concentrations in method blanks. These constituents were
<br /> 40 measured at very low concentrations that did not affect the interpretation of primary
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