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Water Quality Monitoring Report
<br />Forward Landfill
<br />0 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. R5-
<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 />is The groundwater monitoring wells, surface water monitoring locations, and leachate
<br />were sampled in accordance with the sampling and analysis plan detailed in Appendix B.
<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 C. 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 C.
<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 />measured at very low concentrations that did not affect the interpretation of primary
<br />sample results. Results from the duplicate groundwater sample collected from well
<br />AMW-11 are presented along with the primary data in Table 3-2. The duplicate sample
<br />analyses yielded good correlation with quantifiable constituents having a RPD of five
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