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100,000 Total and Hexavalent Chromium 1 1 100,000 Iron and Manganese 1,000 Arsenic <br /> 10,000 f Iron - <br /> 10,000 Manganese <br /> W(00 for Arsenic(10 Ng/L) <br /> _ - <br /> J - <br /> WQO for Iron(300 Ng/L) <br /> 1,000 - - - WQO for Manganese(50 Ng/L) 100 - <br /> c 1,000 <br /> 0 <br /> 100 - - - - - - - - - - - - - - - - - - - <br /> _ 100 0 <br /> v10 ° - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ? 10 <br /> Rr <br /> Total Chromium = V <br /> 1 Hexavalent Chromium C 10 C <br /> — — <br /> WQO for Chromium(50 Ng/L) 0 U <br /> 0.1 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 Conductivity <br /> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1,000 <br /> J 100 -- 1,000 <br /> a� �100 s f <br /> Eas N - - - - - - - - - - - - - - - - - - - - � - - -`� - - - <br /> E <br /> c c <br /> o c .- <br /> O U <br /> ;a 10 w <br /> 10 100 <br /> _ E <br /> U C c <br /> U 1 CO) <br /> 0 --4--TDS <br /> - ~ EC <br /> - <br /> WQO for Sulfate(250 mg/L) <br /> - WQO for TDS(450 mg/L) <br /> 1 .. 0 10 <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 /> 12 pH 600 Oxidation-Reduction Potential Notes <br /> 500 Well MW-447S was installed in July 2010 and developed in August 2010 <br /> 11 Non-detect values are plotted as half of the reporting limit <br /> 400 Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> 10 r 300 Blue shading represents periods of treatment through vertical injection borings <br /> r 0 Red shading represents periods of treatment through the horizontal wells <br /> c g = 200 <br /> � _ Ng/L= micrograms per liter <br /> -E 100 pS/cm = microSiemens per centimeter <br /> 8 2 0 mg/L = milligrams per liter <br /> WQO=water quality objective (not established if not shown on individual graphs) <br /> 7 a=i -100 <br /> 6 U -200 /ft M W H <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <br /> -400STOCKTON,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-447S <br /> GRAPH 39 <br />