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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> 10,000 t Iron <br /> 10,000 for Arsenic(10 Ng/L) <br /> Manganese ——— WQO................. <br /> WQO for Iron(300 N9/L) <br /> z 1,000 <br /> WQO for Manganese(50 Ng/L) 100 ®_ <br /> c 1,000 _ <br /> I a <br /> 100 ---- -- --!_— -- =_ <br /> c BII� ee L _ <br /> yO100 <br /> v 23 ----- L <br /> 10.E. — ----- <br /> -1 HERE = <br /> s V <br /> f Total Chromium a - <br /> 1 Hexavalent Chromium v 10 s <br /> O <br /> o U <br /> WQO for Chromium(50 ug/L) O <br /> Im <br /> �I�INI�II <br /> 0.1 e....... Illill <br /> 1 1 <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 <br /> 1,000 Sulfate 10,000 Total Organic Carbon 10 000 Total Dissolved Solids and Electrical Conductivit <br /> g Y <br /> 1 000 <br /> 100 - 1,000 <br /> E11 <br /> rna 100 <br /> E °' CO) --- --- — --- <br /> g <br /> c L LU <br /> 10 <br /> . J <br /> 10 \ <br /> 100 <br /> C � <br /> O <br /> U <br /> V2=1 1= <br /> .; <br /> C <br /> OZS <br /> _ <br /> U 1 : = <br /> O --4—TDSMEE <br /> = <br /> WQO for Sulfate(250 mg/L) EC <br /> WQO for TDS(450 mg/L) a <br /> 10 .. ®_ <br /> Jan. 2008 Jan. 2009 an. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 <br /> 127 <br /> PH soo Oxidation-Reduction Potential Notes <br /> 500 The first sample point on the graphs represents baseline conditions before remedial <br /> 11 - ......... activities affected groundwater in the vicinity of the well <br /> 400 Non-detect values are plotted as half of the reporting limit <br /> 10 y Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> .r 300 _®: <br /> r o Blue shading represents periods of treatment through vertical injection borings <br /> c g 200 - Red shading represents periods of treatment through the horizontal wells <br /> — 9 p p 9 <br /> ° 100 . _ II= micrograms per liter <br /> 8 <br /> o pS/cm = microSiemens per centimeter <br /> E 0 a mg/L= milligrams per liter <br /> -100 = WQO=water quality objective (not established if not shown on individual graphs) <br /> v <br /> o -200 <br /> s U © 71'A't V L.I <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <br /> -400 STOCKTON,CALIFORNIA <br /> 4 -500 CHEMICAL CONCENTRATIONS OVER TIME IN <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 INTERMEDIATE WELL MW-213 (1-7) <br /> GRAPH 23 <br />