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The results of waterualit analyses - <br /> q y y s completed for surface water monitoring stations are <br /> generally consistent with previous results. Toluene was detected at a trace concentration in the <br /> sample collected from background station SW-1. Trend analyses indicate that turbidity at <br /> surface water stations SW-1, SW-2, and SW-3 depict statistically significant increasing trends. <br /> Since turbidity exhibits a statistically significant increasing trend at background surface water <br /> stations SW-1 and SW-2, the increasing trend in turbidity at SW-3 is unlikely to be indicative of <br /> an impact from the facility. <br /> A total of 17 VOCs were detected in the samples from soil-pore gas monitoring probes during <br /> the current monitoring period, with the sample from probe SGP-2A containing the highest total <br /> concentration of VOCs. No methane was detected in soil-pore gas monitoring probes during the <br /> current monitoring period. <br /> If you have any questions regarding this report, please call me at(858)451-1136. <br /> Sincerely, <br /> i <br /> e <br /> illiam o ez, PG, CHg <br /> Project Geol st <br /> Attachment <br /> C:UO07-OOd4Vf samrtr_wm07.doc - <br /> -2- <br /> Geologic Associates <br />