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100,000 100,000 1,000 <br /> MUT <br /> Total and Hexavalent Chromium Iron and Manganese Arsenic <br /> 11119O.21I <br /> 10,000 —Iron <br /> Total Chromium 10,000 --- Manganese -- WQO for Arsenic(10 Ng/L) <br /> Hexavalent Chromium WQO for Iron(300 Ng/L) 191@III9I <br /> J ——— WQO for Chromium(50 Ng/L) —— WQO for Manganese(50 Ng/L) <br /> Z 1,000 100 <br /> c o 1,000 a ®� <br /> - <br /> L <br /> 100 ---- ------ a� <br /> .. e 1 <br /> --------------- ------------------ s e <br /> I <br /> ., 100 e= ao <br /> o --------V10 --- ------ L <br /> 10 <br /> — w s - <br /> ..:: <br /> ...Em „"10 <br /> = <br /> . — <br /> 1 o U <br /> iBlnado ilililili <br /> i <br /> 0.1 <br /> Jan. 2008 Jan. 2009 Jan. 2010 an. 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 <br /> 100 <br /> 1'000 <br /> rn 100 _ <br /> — <br /> �INI �I <br /> O <br /> C <br /> L 10 <br /> LU <br /> 10 - c <br /> a� 100 <br /> o ° E <br /> V c <br /> v 1 - =_ <br /> --cc <br /> TDS <br /> ——— WQO for Sulfate(250 mg/L) EC <br /> --- WQO for TDS(450 mg/L) <br /> E <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 soo rOxidation-Reduction Potential Notes <br /> The first sample point on the graphs represents baseline conditions before remedial <br /> 500 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 /> p Y <br /> w75 <br /> 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 /> � = a <br /> lag <br /> 100 /L- micrograms per liter <br /> - 9 <br /> 8 0 0 pS/cm = microsiemens per centimeter <br /> a mg/L= milligrams per liter <br /> -100 a WQO=water quality objective not established if not shown on individual graphs) <br /> - q Y 1 9 P ) <br /> va <br /> o -200 T ru <br /> s © l a �L <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-325 <br /> GRAPH 36 <br />