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FORWARD LANDFILL 9999 S. Austin Road <br /> Manteca, CA 95336 <br /> (209) 982-4298, Fax(209) 982-1009 <br /> RWQCB was notified of the non-statistical indication of a release at well MW-9A, which <br /> has been attributed to the recent placement of a final cover system on the landfill and <br /> associated landfill gas migration. The results of the retest samples collected from <br /> background well MW-6A indicate that no VOCs were detected and the concentration of <br /> chloroform in the primary sample was a false positive. <br /> The results of water quality analyses completed for surface-water monitoring stations are <br /> generally consistent with previous results. During the current monitoring period, no CL <br /> were exceeded, and with the exception of turbidity in all three surface-water samples, no <br /> statistically significant increasing trends were noted. Since turbidity exhibits a <br /> statistically significant increasing trend at background surface water stations SW-1 and <br /> SW-2, the increasing trend in turbidity at S -3 is unlikely to be indicative of an impact <br /> from the facility. <br /> The results of the 5-year constituents of cone (COC) sampling conducted during the <br /> monitoring period indicates that excluding the metals,the only COC detected was bis(2- <br /> ethylhexyl)phthalate, a confirmed laboratory contaminant, in all groundwater, leachate, <br /> and surface water samples. In addition, only one maximum contaminant level (MCL) <br /> exceedance, for arsenic, was identified in groundwater monitoring well MW-6A. <br /> However, considering the fact that well MW-6A is a background well and is located <br /> several hundred feet from the site, the MCL exceedance does not appear to be related to a <br /> release from the landfill. <br /> The field screening results from soil-pore gas monitoring probes indicates that no <br /> methane was measured in soil-pore gas monitoring probes during the monitoring period. <br /> I certify under penalty of law, that I have personally examined and am familiar with the <br /> information submitted in this document and all attachments, and that based on my inquiry <br /> of those individuals immediately responsible for obtaining this information, I believe that <br /> the information is true, accurate, and complete. I am aware that there are significant <br /> penalties for submitting false information,including the possibility of fine and <br /> imprisonment. <br /> If you have any questions regarding this report, please call me at(209) 982-4298. <br /> Sincerely, <br /> *7 <br /> Don Litchfiel <br /> Environmental Manager <br /> Attachment <br />