ARCHIVED REPORTS_2011_16 - Laserfiche WebLink

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Groundwater quality conditions beneath the Austin Unit during the third quarter 2011 monitoring period are generally similar to historical results. CLs were exceeded in detection monitoring program (DMP) wells AMW-6, AM -12, AMW-13, and AMW-14, however, with the exception of the barium concentration measured in well AMW-14, no CLs were exceeded for constituents that exhibited statistically significant increasing trends. In the corrective action program (CAP) wells, trend analyses are performed instead of comparison to CLs. During the current monitoring period, statistically significant increasing trends were noted for one or more volatile organic compound (VOC) constituents in CAP wells AMW- 1, AMW- 10, AMW-I 9, and AMW-I 9BR, while one or more decreasing VOC trends were noted in CAP wells AMID -1, AMW-4, AMW-5/5R, AMW-10, and AMW-11. The increasing cis- 1,2-DCE trends in wells AMW-1 and AMW- 10, suggest that active reductive dechlorination is occurring in the vicinity of these wells. Weekly standard observations have been conducted by the Forward Landfill Operations Manager during the reporting quarter. The Operations Manager also reported that there were no discharges to surface water during the reporting period. In addition, no notices of violation were issued by the San Joaquin County Environmental Health Department. 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,/� Zion Litchf€ed Environmental Manager Attachment 11 -2-