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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> 10,000 f Iron <br /> 10,000 —� Manganese --- WQOfor Arsenic(10Ng/L) <br /> J <br /> -- WQO for Iron(300 Ng/L) <br /> 1,000 - 004040404.400 <br /> ——— WQO for Manganese(50 Ng/L) 100 <br /> -- III �— <br /> c1,000 - <br /> o <br /> r J <br /> 100 --- ----------------- ------- — Z <br /> r I _ <br /> ----------------------------- Z _/ <br /> 100 <br /> O _ <br /> V 10 :.. .. .: L --- _I------------ -------w. L�+ <br /> 10 <br /> f Total Chromium <br /> 10 <br /> c <br /> 1 Hexavalent Chromium O <br /> ® Up = <br /> --- WQO for Chromium(50ug/L) <br /> 0.1 :..... 1 1 llalllllllli€I <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 aTotal Organic Carbon 10,000 Total Dissolved Solids and Electrical Conductivity <br /> 1,000_—-- — ---3- -------- —�— _ <br /> 100 1'000 <br /> rn 100 <br /> E ai cn <br /> ------------ ----------� <br /> r G <br /> c <br /> LU <br /> s <br /> 10 c \ <br /> a� 100 <br /> v <br /> E <br /> v 1 _ cn <br /> TDS <br /> EC <br /> --- WQO for Sulfate(250 mg/L) <br /> ® ——— WQO for TDS(450 mg/L) <br /> 1 <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 m PH soo Oxidation-Reduction Potential Notes <br /> 500 Well MW-4 was added to the sampling program in December 2010 <br /> 11 m 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 Blue shading represents periods of treatment through vertical injection borings <br /> r m o Red shading represents periods of treatment through the horizontal wells <br /> 9m >_ <br /> c 200 <br /> _ _ = pg/L= micrograms perller <br /> 100 .......mm pS/cm = microSiemensper centimeter <br /> 8 0 mg/L= milligrams per liter <br /> 0 <br /> ``° ........® s WQO=water quality objective (not established if not shown on individual graphs) <br /> 7 s <br /> m � 100 <br /> 0 200 <br /> 6 n v © M W H <br /> -300 <br /> ® FORMER MARLEY COOLING TOWER COMPANY <br /> 5 n <br /> -400 STOCKTON,CALIFORNIA <br /> 4 500 <br /> 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 INTERMEDIATE WELL MW-4 <br /> GRAPH 3 <br />