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100,000 Ikili Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> IIIIIIIIII <br /> 3 € <br /> 10,000 t Iron <br /> f Total Chromium 10 000 ——— WQO for Arsenic(10 Ng/L) <br /> Manganese <br /> Hexavalent Chromium --- WQO for Iron(300 Ng/L) <br /> = 1 ppp ——— WQO for Chromium(50 Ng/L) ——— WQO for Manganese(50 Ng/L) 100 <br /> .� e <br /> c 1,000 a <br /> :+L .... aE 100 z <br /> ---- ------------ ----------------- �, s <br /> m s <br /> 100 a o <br /> V10 ` ° - -------- --- - ----------- L 10 <br /> a V <br /> 10 c <br /> 1c o <br /> o U a <br /> U <br /> 1 <br /> 0.1 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 /> Www ------------------------------- <br /> 1,000 <br /> .........0a 2 <br /> 100 <br /> 1,000 <br /> rn ...M444444444. <br /> 100 <br /> Eai in <br /> £ a - --- --- - ------- <br /> ® -- <br /> R <br /> ._ tltltl91 <br /> ® ° w <br /> c <br /> a <br /> L <br /> 10 ®_ c <br /> v o� 100 <br /> C <br /> O <br /> C <br /> U <br /> v 1 cc_ <br /> f <br /> O — TDS <br /> EC <br /> ——— WQO for Sulfate(250 mg/L) _ _ <br /> I <br /> --- WQO for TDS(450 mg/L) 9 <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 soo Oxidation-Reduction Potential Notes <br /> 500 I�EItl The first sample point on the graphs represents baseline conditions before remedial <br /> 11 - activities affected groundwater in the vicinity of the well <br /> 400A Non-detect values are plotted as half of the reporting limit <br /> 10 p Y y Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> 300 <br /> w o 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 /> - - <br /> 100 - v pg/L= micrograms per liter <br /> 8 0 S/cm - microSiemens per centimeter <br /> p <br /> 0mg/L= milligrams per liter <br /> rn -100 WQO=water quality objective not established if not shown on individual graphs) <br /> a q Y 1 9 P ) <br /> 6 <br /> o -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 MWA <br /> GRAPH 1 <br />