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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> 10,000 Total Chromium f Iron <br /> Hexavalent Chromium 10,000 Manganese —— WQO for Arsenic(10 Ng/L) <br /> WQO for Iron(300 Ng/L) <br /> — WQO for Chromium(50 Ng/L) <br /> —— WQO for Manganese(50 Ng/L) 100 <br /> 1,000 - <br /> a <br /> c <br /> 1,000 -_ <br /> sAh <br /> J <br /> L 100 W ---- - --- -- -- - � <br /> *, - <br /> ------- -------- ----------------- <br /> m z s <br /> 100 a o <br /> � _ <br /> V 10 -._ ° M. ---- -- ----------- L 10 <br /> .. <br /> L a i+ <br /> g 10 c <br /> 1 - V <br /> c <br /> U iu, <br /> iu...._ <br /> 1 I <br /> 0.1 ..._.... <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 /> .................................: g <br /> 1,000 <br /> 100 1,000 <br /> E <br /> rn 100 ° <br /> E <br /> c 10 LU <br /> 10 c 100 <br /> c <br /> o E <br /> v <br /> c <br /> c <br /> o ._ <br /> v 1 <br /> -- <br /> _; 1 <br /> EPAE�W�� 0 €€ �TDS <br /> EC <br /> ——— WQO for Sulfate(250 mg/L)1 WQO for TDS(450 mg/L) - <br /> 0 <br /> 1 p ®- <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 an. 2010 Jan. 2011 Jan. 2012 <br /> 12 PH 600r Notes 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 /> 300 a <br /> p Y <br /> w o a Blue shading represents periods of treatment through vertical injection borings <br /> a <br /> c g 200 Red shading represents periods of treatment through the horizontal wells <br /> 100 N9 <br /> = /L- micrograms per liter <br /> ca c <br /> _ - 9 <br /> >3 - o a NS/cm - <br /> microSiemens per centimeter <br /> p mg/L= milligrams per liter <br /> �- -100 WQO=water quality objective (not established if not shown on individual graphs) <br /> v <br /> ....... .... <br /> 6 v -200 <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-324 (1-10) <br /> GRAPH 35 <br />