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100,000Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 -- Arsenic <br /> 10,000 Total Chromium <br /> 10,000 ——— WQO for Arsenic(10 Ng/L) <br /> Hexavalent Chromium <br /> J ——— WQO for Chromium(50 Ng/L) 100 <br /> z 1,000 mw <br /> _ g <br /> s <br /> c6 S J <br /> y <br /> 100 �I -- ———— ---------------- — <br /> ——————— ——————————————— . - <br /> - <br /> 100 <br /> = o <br /> V10 ° ------------------------ -- L 10 <br /> L it <br /> C f Iron d <br /> v <br /> d <br /> C <br /> v 10 Manganese <br /> 1 O --- WQO for Iron(300 Ng/L) U <br /> O O <br /> U ——— O for Manganese(50 ug/L) <br /> WQ <br /> Jill <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 <br /> 1,000 Sulfate 10 000 Total Or Organic Carbon 10,000 Total Dissolved Solids and Electrical Conductivit <br /> g y <br /> -- ------- -- 1,000 <br /> -- -- <br /> 100 E 1,000 <br /> rn al 00 <br /> Eai CO) -------- -- —— <br /> c <br /> 0 <br /> ;I <br /> R <br /> 0 <br /> 10 w <br /> w J <br /> 10 <br /> d <br /> a��d�a�d� _ a� 100 <br /> 0 <br /> v <br /> U <br /> O - <br /> - — <br /> U - <br /> s <br /> G TDS <br /> rn <br /> -- WQO for Sulfate(250 mg/L) <br /> EC <br /> -- WQO for TDS(450 mg/L) <br /> 10 <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 <br /> 12 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 <br /> y _ Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> 300 e <br /> r o Blue shading represents periods of treatment through vertical injection borings <br /> = g m 200 <br /> Red shading represents periods of treatment through the horizontal wells <br /> ° 100 pg/L= micrograms per liter <br /> 8 0 ®_ pS/cm = microsiemens per centimeter <br /> N 0 mg/L= milligrams per liter <br /> -7 A Ak <br /> 100 WQO=water quality objective (not established if not shown on individual graphs) <br /> v = <br /> 6 m v -200 © 1 d - L <br /> o _ T <br /> -300 <br /> A <br /> ` 4 1 <br /> FORMER MARLEY COOLING TOWER COMPANY <br /> 5 <br /> -400 m <br /> n <br /> STOCKTON,CALIFORNIA <br /> m <br /> n <br /> m <br /> 4 _ - 500 n ! CHEMICAL CONCENTRATIONS OVER TIME IN <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 SHALLOW WELL TW-14 <br /> GRAPH 54 <br />