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100,000 - Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 -- Arsenic <br /> IIBIpIBIpI <br /> 10,000 <br /> f Total Chromium 10,000 <br /> 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) <br /> 1,000 ——— WQO for Manganese(50 Ng/L) <br /> 100 <br /> Z _ <br /> c 1,000 -- <br /> J ®_ <br /> 100 - <br /> L <br /> —— <br /> '� <br /> y+ <br /> ——————— —————————————————————————— S _ <br /> 100 - s o <br /> V 10 ° - ------- <br /> - --- - ----------- L 10 <br /> s Y a <br /> e ®_ <br /> 10 s <br /> MIr <br /> O <br /> 1 0 v <br /> 0.1 ..._.... e 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 /> ---------- ------------------ 1,000 <br /> ........3E.',..iei <br /> 100 - — <br /> E1,000 <br /> rn <br /> al 00 -Ar <br /> E ai in <br /> .2 w <br /> a� 1 p <br /> v d a� 100 <br /> c E <br /> 0 <br /> v <br /> 0 <br /> c <br /> v 1 <br /> O — TDS <br /> ——— WQO for Sulfate(250 mg/L) <br /> f EC <br /> -- WQO for TDS(450 mg/L) <br /> a <br /> 1 p <br /> 10 <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 an. 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 gni 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 <br /> p Y <br /> w Blue shading represents periods of treatment through vertical injection borings <br /> g _ 200 Red shading represents periods of treatment through the horizontal wells <br /> 100 pg/L= micrograms per liter <br /> co c <br /> 8 o E S/cm - microSiemens per centimeter <br /> c - <br /> 0 <br /> N 47ik <br /> E mg/L= milligrams per liter <br /> -100 WQO=water quality objective (not established if not shown on individual graphs) <br /> v v <br /> 6 v -200 © 7" -V j <br /> A <br /> ME <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <br /> STOCKTON,CALIFORNIA <br /> IN= CHEMICAL CONCENTRATIONS OVER TIME IN <br /> 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -500 <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 SHALLOW WELL II <br /> GRAPH 5 <br />