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50 _------- 6 <br /> 45 - - -_ <br /> Stockpile removed 4 <br /> 40 - October 2007 <br /> 35 -- - -- --- 2 = <br /> o <br /> 3 ;, m <br /> 0 30 --- - - - 0 > m <br /> a � w � <br /> U) 25 <br /> ai <br /> C <br /> +- _ <br /> C13 m <br /> 00 20 - -- 2 vE <br /> v d <br /> E 15 - - - - 4 P2 <br /> - C7 <br /> 10 - - - - <br /> -6 <br /> 5 - — <br /> 0 -8 <br /> Dec-01 Dec-02 Dec-03 Dec-04 Dec-05 Dec-06 Dec-07 Dec-08 Dec-09 Dec-10 Dec-11 <br /> Date <br /> Exolanation: <br /> 0 Total Chromium <br /> * Dissolved Chromium <br /> * Dissolved Hexavalent Chromium <br /> * Groundwater Elevation Cr and Cr VI CONCENTRATION VS. TIME <br /> Well LPW-2 <br /> Notes: MonierLifetile LLC Lathrop Facility <br /> 1.Concentrations reported as non-detect were assigned the Lathrop, California <br /> value of one-half the laboratory reporting limit. <br /> 2.Cr=chromium;Cr VI=hexavalent chromium. By:TP Date: 11/17/10 Project No. 10626 <br /> AMEC Geomatrix Figure 9 <br />