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exceeded in all wells except background well MW-7A. Furthermore, statistically significant increasing trends were consistently noted for chloride in well MW-10A, sulfate in well MW-9B, and for bicarbonate in well MW-7A. Decreasing trends were consistently noted for pH in well MW-6A, sulfate and TDS in well MW-7A, and nitrate as nitrogen in wells MW-8A and MW-10A. Excluding false positive results, a trace level concentration of TCFM was detected above the PQL in well MW-9A during the second semiannual 2008 monitoring period. No VOCs were detected in samples from leachate monitoring well MW-2 during the 2008 monitoring year. 6.3 SURFACE WATER Surface water elevations at the stream gauging stations have remained relatively static over the past year, reflecting tidal patterns. Surface water generally flows west toward the San Francisco Bay. Water quality conditions for surface water at the French Camp Landfill during the 2008 monitoring year are generally similar to those observed in the previous monitoring years. CLs were exceeded for carbon disulfide at surface water station SW-3 during the first semiannual 2008 monitoring period. However, retest results indicate that the primary results were a false positive,most likely the result of laboratory and/or field contamination. During the 2008 monitoring year, only turbidity concentrations in all three surface water stations have exhibited an increasing trend. However, given the fact that increasing trends for turbidity were calculated for upgradient surface water stations SW-1 and SW-2, the increasing trend in turbidity at surface water station SW-3 is considered reflective of regional conditions and/or are non-facility related. 6.4 SOIL-PORE GAS Pursuant to M&RP Order No. R5-2007-0046, soil-pore gas sampling was performed quarterly during the first and second quarter 2008 monitoring periods to complete the five rounds of soil-pore gas data. The results of the quarterly soil-pore gas samples are similar to the historical results indicating intermittent low-level concentrations of VOCs, and with the exception of suspected field contamination, no methane has been measured in any of the soil-pore gas samples collected. Beginning the second semiannual 2008 monitoring period, soil-pore gas probes are monitored semiannually using a field screening protocol. During the 2008 monitoring year no methane was detected in any of the soil-pore gas probes. 6.5 COMPLIANCE RECORD Historically, low-level VOCs have been sporadically detected in downgradient groundwater monitoring wells at the French Camp Landfill. In a letter dated January 16, 2007, the RWQCB was notified of the non-statistical indication of a release at well D:\2008-0012\FC2SA08.doe — 7 Geologic Associates