Laserfiche WebLink
During the third quarter 2007 monitoring period no methane exceeded the regulatory limit of 5 <br /> percent in perimeter soil-pore gas probes at the Forward Unit, suggesting an overall <br /> improvement in landfill gas at the site. Forward continues to install additional landfill gas <br /> extraction wells(as needed), and makes regular adjustments to the landfill gas extraction system <br /> to optimize efficiency of the landfill gas extraction system. <br /> Groundwater quality conditions beneath the Austin Unit during the third quarter 2007 monitoring <br /> period are generally similar to historical results. CLs were exceeded in DMP wells AMW-6, <br /> AMW-7, AMW-13, and AMW-14,however,none of the CL exceedances exhibited statistically <br /> significant increasing trends. In the CAP wells, trend analyses are performed instead of <br /> comparison to CLs. During the current monitoring period, one or more statistically significant <br /> increasing trends were noted for VOC constituents in wells AMW-1,AMW-10, and AMW-19, <br /> while decreasing VOC trends were noted in CAP wells AMW-1,AMW-4,AMW-10,AMW-11, <br /> and AMW-18. The increasing cis-1,2-DCE trends in wells AMW-1 and AMW-10 suggest that <br /> active reductive dechlorination is occurring in the vicinity of these wells. <br /> According to the Forward Landfill Operations Manager,weekly standard observations have been <br /> conducted during the reporting quarter. The Forward Landfill Operations Manager also reported <br /> that no surface water was discharged during the reporting period. <br /> If you have any questions regarding this report,please call me at(858)451-1136. <br /> Sincerely, <br /> 4WiliamB pez, PG, CHg <br /> ProjectG of gist <br /> Attachment <br /> -- C:0007-M3T0RWARDLMD0C <br /> -2- <br /> Geologic Associates <br />