ARCHIVED REPORTS_2012_3 - Laserfiche WebLink

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Groundwater quality conditions beneath the Austin Unit during the second quarter 2012 monitoring period are generally similar to historical results. CLs were exceeded in DMP wells AMW-13 and AMW-14,and at surface water station ASW-2. With the exception of the barium and chloride concentrations measured in well XMW-14,none of the CL exceedances exhibited statistically significant increasing trends. It should be noted,however,that the barium and chloride concentrations measured in the sample collected from well AMW-14 are within the historical range of values observed at this well. In the CAP wells,trend analyses are performed instead of comparison to CLs. During the current monitoring period, statistically significant increasing trends were noted for three VOCs in CAP wells AMW-I, while several decreasing VOC trends were noted in CAP wells AMW-1,AMW-4,AMW-5R,AMW-10,and AMW-11. The increasing cis-1,2-dichloroethene trend in well AMW-I,suggest that active reductive dechlorination is occurring in the vicinity of this well. According to the Forward Landfill Operations Manager, standard observations have been conducted weekly during the reporting quarter. The Forward Landfill Operations Manager also reported that no surface water was discharged from the facility during the reporting period. I certify under penalty of law, that I have personally examined and am familiar with the information submitted in this document and all attachments, and that based on my inquiry of those individuals immediately responsible for obtaining this information, I believe that the information is true,accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment. If you have any questions regarding this report,please call me at(209)982-4298. Sincerely, Erin Fanning Environmental Manager Attachment