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contaminant. Four estimated trace-level VOCs were measured in wells MW-10, in <br /> addition to chloromethane which was measured above its PQL in samples from wells <br /> MW-17, MW-18, and DW-9690. CLs were exceeded for one or more monitoring <br /> parameters in samples from 11 wells. In accordance with the RPCMP, seven wells with <br /> exceedances of CLs that are potential impact constituents will be resampled in August <br /> 2009 (during the third quarter 2009 sampling event), and a second independent sample <br /> will be collected in September 2009. The results of the two retests will be submitted to <br /> DTSC and RWQCB under separate cover. Historically, similar exceedances of inorganic <br /> CLs have been measured and verified in samples collected from DMP monitoring wells <br /> at the Forward Unit, followed by no release demonstrations (NRDs), which have <br /> concluded that the inorganic CL exceedances are likely the result of naturally occurring <br /> conditions and therefore not indicative of a release from the Forward Landfill. In an <br /> effort to reduce the number of false positive results, GLA has submitted a request to the <br /> DISC, on behalf of Forward, to update the CLs for the Forward Unit. <br /> During the second quarter 2009 monitoring period,methane concentrations did not <br /> exceed the regulatory limit of five percent in perimeter soil-pore gas probes at the <br /> Forward Unit. Forward continues to install additional landfill gas extraction wells (as <br /> needed), and makes regular adjustments to the landfill gas extraction system to optimize <br /> efficiency of the landfill gas extraction system. <br /> 3.0 AUSTIN UNIT <br /> 3.1 WATER QUALITY MONITORING <br /> 3.1.1 Sampling and Laboratory Analyses <br /> During the second quarter 2009, depth-to-water measurements were recorded in the <br /> groundwater monitoring wells on May 4, 2009 and the Austin Unit's DMP and CAP <br /> groundwater monitoring wells were sampled by ATC between May 4 and 6, 2009. Both <br /> surface water stations were sampled on May 4, 2009. <br /> A single sample set was collected from each sample point with sufficient liquid and <br /> submitted to BC for analysis of the parameters stipulated in RWQCB Order No. R5- <br /> 2003-0049. Table 2-1 presents the monitoring schedule and summarizes the analytical <br /> methods utilized during the current monitoring period. Water quality samples were also <br /> analyzed in the field for dissolved oxygen,turbidity,temperature, specific conductance, <br /> and pH and recorded on well data sheets. The groundwater monitoring wells and <br /> leachate were sampled in accordance with the sampling and analysis procedures detailed <br /> in Appendix B. The well data sheets, raw laboratory data, certificates of analyses, and <br /> chain-of-custody records related to the sampling program are included in Appendix C. <br /> Field and laboratory analyses are summarized in Tables 3-1 through 3-6. <br /> D:\2009_0017\FA_2Q09.doc <br /> 8 Geologic Associates <br />