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2.0 FORWARD UNIT 2.1 WATER QUALITY MONITORING 2.1.1 Sampling and Laboratory Analyses During the first quarter 2009, depth-to-water measurements were recorded in the groundwater monitoring wells on February 11, 2009, and all of the groundwater monitoring wells were sampled by ATC Associates (ATC) between February 11 and 13, 2009. Surface water stations were inspected on February 13, 2009 and reported dry. All lysimeters were inspected and a vacuum was set on February 11, 2009. The lysimeters were checked for soil-pore liquid on March 11,2009, and sufficient soil-pore liquid was present to collect samples from lysimeters E-2, -2, LY-A, and LY-BG1. Of note, lysimeter D-01 has been buried and lysimeters E-1, LY-EIA, LY-EIB, LY-E2A, LY-E213, FU-03, and WMU D-02 appear to be damaged since they no longer hold a vacuum. A single sample set was collected from each sample point containing sufficient liquid and submitted to BC Laboratories, Inc. (BC) of Bakersfield, California, a state certified laboratory under contract to Forward. During the first quarter 2009 monitoring period, samples were analyzed for the routine monitoring parameters stipulated in RWQCB Order No. R5-2003-0049. In addition, upgradient well MW-24 was sampled for the fourth time for the full list of constituents of concern (COCs). Table 2-1 summarizes site monitoring parameters, analytical methods, and monitoring frequency. Water quality samples were also analyzed in the field for dissolved oxygen, turbidity, temperature, specific conductance, and pH and recorded on well data sheets. The groundwater monitoring wells and leachate monitoring points were sampled in accordance with the sampling and analysis procedures detailed in Appendix B. The well data sheets, laboratory data, certificates of analyses, and chain-of-custody records for the sampling program are included in Appendix C. The laboratory analyses and field results for groundwater monitoring wells, surface water stations, lysimeter and leachate sampling stations are summarized in Tables 2-2 through 2-7. 2.1.2 QA/QC Results The quality assurance/quality control (QA/QC)program completed for the first quarter 2009 water quality monitoring event included analyses of four trip blanks, four field blanks, four laboratory method blanks, and one duplicate sample. The trip, field, and laboratory method blanks were analyzed for volatile organic compounds (VOCs) by EPA Method 8260 and method blanks were analyzed for all of the analytes included in the monitoring program. The results of the QA/QC program indicate that bis(2-ethylhexyl) phthalate, chloroform, chloromethane, and methylene chloride were detected in one or more of the QA/QC blanks during the monitoring period. Review of the primary sample results indicates that a similar concentration of bis(2-ethylhexyl)phthalate was detected in the primary sample collected from well MW-24; and chloromethane was detected in the M0009 0017TFA_1Q09.doc 4 Geologic Associates