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Leachate samples were collected on a monthly basis and analyzed in the field for pH and specific conductance. Results of monthly field monitoring measurements are presented in Table 2-8. Value Engineering conducted a gas test of the leachate collection and removal system (LCRS)on August 14, 2008 at the Forward Unit. The test results indicate that an open- air conduit is present across the LCRS units, and no excessive leachate is backed up in the drainage layer or sump of the LCRS units. A summary of the test results is provided in Appendix A. 2.1.8 Constituents of Concern During the second quarter 2008 monitoring event, samples were analyzed for the full suite of COCs stipulated in RWQCB Order No. R5-2003-0049. The results of the COC round indicated that 2,4,5-T(a chlorinated herbicide) was detected above the PQL in the sample collected from well MW-2A; sulfide was detected above the PQL in the sample collected from well MW-24; and cyanide was detected above the PQL in the sample from downgradient surface water station FSW-1. With the exception of FSW-1, confirmation samples were collected during the current monitoring period for each of these COCs measured above the PQL. As shown in Table 2-2, none of the COCs were confirmed in the retests samples,indicating these primary COC results were false positives. The cyanide retest at surface water station FSW-1 was not collected due to an error by the field sampling crew, and will be collected in November 2008 during the fourth quarter qW 2008 sampling event. 2.2 SUMMARY Groundwater quality conditions beneath the Forward Unit during the third quarter 2008 monitoring period are generally similar to those observed in previous monitoring periods. During the third quarter 2008 monitoring period, eight new historical intrawell maximum values were measured in samples collected from groundwater monitoring wells. Excluding suspected field/laboratory contaminants, estimated trace-level VOCs were measured in wells MW-10, MW-15 and MW-16; and one VOC (TCFM) was measured above the PQL in well MW-10. CLs were exceeded for one or more monitoring parameters in samples from 13 wells. In accordance with the RPCMP, eight wells with exceedances of CLs that are potential impact constituents will be resampled in November 2008 (during the fourth quarter 2008 sampling event), and a second independent sample will be collected in December 2008. The results of the two retests will be submitted to DTSC and RWQCB under separate cover. Historically, similar exceedances of inorganic CLs have been measured and verified in samples collected from DMP monitoring wells at the Forward Unit, followed by no release demonstrations (NRDs), which have concluded that the inorganic CL exceedances are likely the result of naturally occurring conditions and therefore not indicative of a release from the Forward Landfill. D:\2M_0010\FA_3W8.doc 8 Geologic Associates