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As presented in Table 2.2, there was one VOC detected at a detection monitoring wells during <br /> the third quarter 2009 monitoring event. Chloroform was detected at background well MW-6A at <br /> a concentration(1.6 ug/L)above the laboratory PQL. Chloroform has previously been detected at <br /> MW-6A at concentrations ranging from 0.10 ug/L to 0.81 ug/L. <br /> Piper diagrams of the first and third quarter 2009 results for the groundwater monitoring wells are <br /> included in Appendix F. Hydrographs of the groundwater monitoring wells, illustrating historic <br /> groundwater elevations, well screen elevations, and pump intake elevations, are included in <br /> Appendix G. <br />