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P:\10626.000.0\Docs\Semi-Annua1 Groundwater Monitoring&Sampling\Lathrop Monthty Groundwater Monitoring\Figures\Figure_6-8-10.xls <br /> 50 6 <br /> 45 — <br /> Stockpile removed 4 = <br /> w 40 October 2007 - E <br /> 035 <br /> c <br /> N l0 <br /> 30 - - E <br /> rn 0 <br /> 25 - - - <br /> E c <br /> 0 <br /> -2 <br /> c 20 - M <br /> M m <br /> w <br /> 15 - -- - - - 4 L <br /> 2 <br /> M <br /> � 3 <br /> U010 - - - - - <br /> -6 0 <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 <br /> Explanation: Date <br /> Total Chromium <br /> —3 Dissolved Chromium <br /> 3S Dissolved Hexavalent Chromium Cr and Cr VI CONCENTRATION VS. TIME <br /> —Groundwater Elevation MONITORING WELL LPW-2 <br /> MonierLifetile LLC Lathrop Facility <br /> Notes: <br /> 1. All concentrations reported as non-detect were assigned the value of Lathrop, California <br /> one-half the laboratory reporting limit. <br /> 2. Cr=chromium;Cr VI=hexavalent chromium. B :TP Date:4/27/10 Pro ect No. 10626.000 <br /> AMEC Geomatrix Figure 8 <br />