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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 -- Arsenic <br /> IIBIpIBIpI <br /> 10,000 <br /> Total Chromium 10,000 Iron ——— WQO for Arsenic(10 Ng/L) <br /> ...........: Manganese <br /> Hexavalent Chromium --- WQO for Iron(300 Ng/L) <br /> J ——— WQO for Chromium(50 Ng/L) ——— WQO for Manganese(50 Ng/L) 100 <br /> Z 1,000 <br /> c <br /> 1,000 <br /> J <br /> i 100 _J ------------ --- - ----------- ' <br /> s z <br /> m <br /> — -------------------------------- :, e <br /> 100 s o <br /> o <br /> ------- -- -- <br /> U 10 ° — ------ L 10 <br /> = <br /> a ..................................€ <br /> 10 <br /> 1 c o <br /> E <br /> U <br /> ci I <br /> 0.1 ..._.... e 1 IIBIIIBIIIBIIIBIIIBIIIBIII :;Ei 1 li <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 /> 1,000 Sulfate 10 000 Total Organic Carbon 10,000 Total Dissolved Solids and Electrical Conductivity <br /> ------------------------------- 1,000 <br /> ....a:. p: ........3E. <br /> J <br /> 100 <br /> 1,000 _..... <br /> rn <br /> al 00 - 10110111 <br /> E <br /> o - 1 <br /> r c —� <br /> R 10 w <br /> 10 c a� 100 - <br /> c <br /> c <br /> o <br /> U <br /> v 1 - <br /> 0 TDS <br /> ——— WQO for Sulfate(250 mg/L) <br /> EC <br /> a <br /> --- WQO for TDS(450 mg/L) <br /> a <br /> 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 /> N�BII The first sample point on the graphs represents baseline conditions before remedial <br /> 11 500 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 300 Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> .: <br /> p Y <br /> w > 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 /> � _ = 9 p p 9 <br /> 100 ........ ..: pg/L= micrograms per liter <br /> g <br /> o S/cm - microSiemens per centimeter <br /> p - <br /> 0 a mg/L= milligrams per liter <br /> -100 WQO=water quality objective not established if not shown on individual graphs) <br /> o -200 a <br /> q Y 1 9 P ) <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <br /> -400 I„ — 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 SHALLOW WELL MW-401 <br /> GRAPH 38 <br />