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monitoring parameters in samples from 12 wells. In accordance with the RPCMP,wells with exceedances of CLs will be resampled in May 2007 (during the second quarter 2007 sampling event), and a second independent sample will be collected in June 2007. The results of the two retests will be submitted to DTSC and RWQCB under separate cover. Historically, similar exceedances of CLs have been measured and verified in samples collected from DMP monitoring wells at the Forward Unit, followed by no release demonstrations(NRD),which have concluded that the CL exceedances are likely the result of naturally occurring conditions and therefore not indicative of a release from the Forward Landfill. During the January and February 2007 inspections,the CEHD measured methane at concentrations exceeding the regulatory limit of 5 percent in perimeter soil-pore gas probes GP-11 and GP-12. However, during the March inspection only soil-pore gas probe GP-11 exceeded the regulatory limit, suggesting an improvement in landfill gas in the vicinity of probe GP-12. Forward continues to install additional landfill gas extraction wells (as needed), and makes regular adjustments to the landfill gas extraction system to optimize efficiency of the landfill gas extraction system. The retest results from the annual leachate sample confirm the presence of sulfide and 3-&-4-Methylphenol and both constituents have been added to the CDCs list for the Forward Landfill. 3.0 AUSTIN UNIT 3.1. WATER QUALITY MONITORING 3.1.1 Sampling and Laboratory Analyses During the first quarter 2007,the Austin Unit's DMP and CAP groundwater monitoring wells and surface water monitoring stations were sampled by ATC between February 5 and 7, 2007, and depth-to-water measurements were recorded in the groundwater monitoring wells on February 5, 2007. A single sample set was collected from each sample point with sufficient liquid and submitted to BC for analysis of the parameters stipulated in RWQCB Order No. R5- 2003-0049. Table 2-1 presents the monitoring schedule and summarizes the analytical methods utilized during the current monitoring period. 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, surface water monitoring points, and leachate were sampled in accordance with the sampling and analysis procedures detailed in Appendix B. The well data sheets,raw laboratory data, certificates of analyses, and chain-of-custody records related to the sampling program are included in Appendix C. The results of both field and laboratory analyses are summarized in Tables 3-1 through 3-5. D:\2007_0043\ForwardAustln_w07.doe 8 Geologic Associates