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a concentration of 4.1 µg/L in the sample collected from station SW-3 during the monitoring period. Pursuant to Title 27 of the California Code of Regulations (27CCR) Section 20420 0)(1)and State Water Board Resolution 93-62,the RWQCB was notified in writing of the non-statistical indication of a release from station SW-3 and was resampled in July 2007 to evaluate the significance of the VOC detection. No VOCs were detected in either of the retest samples collected on July 17, 2008, indicating that the detection of carbon disulfide in the primary sample was a false positive result. As has been the case historically, statistically significant increasing trends for turbidity were calculated at surface water stations SW-1, SW-2, and SW-3 (Appendix D). Since turbidity exhibits a statistically significant increasing trend at background surface water stations SW-1 and SW-2, the increasing trend in turbidity at SW-3 is unlikely to be indicative of an impact from the facility. Stream gauging was performed on February 13 and May 12,2008 at monitoring points SG-1 and SG-2 and the data are summarized in Table 5. As shown in Figure 1, monitoring point SG-1 is located upgradient in the Walker Slough and monitoring point SG-2 is located upgradient in the French Camp Slough. 5.0 SOIL-PORE GAS MONITORING During the current monitoring period, soil-pore gas samples were collected from probes SGP-IA, SGP-2A, SGP-3, SGP-4A, SGP-5A, SGP-6A, SGP-7A, and SGP-8A on February 13 and May 12, 2008. Tables 6A and 6B summarizes the results for the soil- pore gas samples collected during first and second quarter 2008 monitoring events at the French Camp Landfill. Methane was not detected in any of soil-pore gas probes during either sampling event. During the first quarter 2008 monitoring period, 10 VOCs were detected in samples from soil-pore gas probes, with the sample from probe SGP-2A containing the highest total concentrations of VOCs. During the second quarter 2008 monitoring period, 15 VOCs were detected in the samples from soil-pore gas monitoring probes during the current monitoring period, with the sample from probe SGP-7A containing the highest total concentration of VOCs. Review of the historical quarterly field screening and laboratory data indicates that with the exception of the first quarter 2007, methane was not detected in any of the soil-pore gas monitoring probes over the evaluation period (March 2007 to February 2008)while intermittent low concentrations of VOCs were measured in all of the soil-pore gas monitoring probes. Of note, the low-level concentrations of methane (<0.16 percent by volume)measured in all of the soil-pore gas probes during the first quarter 2007 monitoring period was believed to be the result of using a gas-sampling pump and Tedlar bags. The subsequent sampling events used summa canisters for sample collection which have resulted in no methane detected in soil-pore gas monitoring wells. Because of the transient behavior of landfill gas in the vadose zone and after having collected five rounds of quarterly soil-pore gas data,pursuant to Monitoring and Reporting (M&RP) Order No. R5-2007-0046, Section D.2 subsequent soil-pore gas sampling will be D:\2003-0012\FC_ISA08mvI.doc 5 Geologic Associates