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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <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) <br /> z 1,000 100 <br /> c <br /> 1,000 s <br /> _ ` <br /> yLr <br /> --- ------- s ,100 ®_ <br /> - <br /> -—————————————————————————————————— C1 e Z = <br /> d <br /> 100 s o <br /> 01p ° — -------- --- ----------- L 10 =_ <br /> _ w a <br /> — V - <br /> 10 _ <br /> 1 = o <br /> — _ <br /> U UWU <br /> IIIIIIIIIIIIII3I3 <br /> IIIYIII -.3 <br /> .. .... 1 <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 <br /> 10,000 Total Organic Carbon 10,000 Total Dissolved Solids and Electrical Conductivity <br /> Y <br /> 1,000 <br /> 100 —— <br /> 1,000 <br /> aloo <br /> E ai —�— <br /> --------- ------ -- ---- -- ---- <br /> oIIIIIIIII <br /> w W 1 <br /> c .�L. 10 <br /> 10 c J <br /> a� 100 <br /> 0 <br /> E <br /> 0 <br /> v � <br /> o <br /> t TDS a <br /> ——— WQO for Sulfate(250 mg/L) <br /> f EC <br /> — <br /> --- WQO for TDS(450 mg/L) <br /> 1 p 10 a <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 /> 12pH soo Oxidation-Reduction Potential Notes <br /> The first sample point on the graphs represents baseline conditions before remedial <br /> 11500 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 /> _ . <br /> c g _ 200 = Red shading represents periods of treatment through the horizontal wells <br /> D — - 9 p p 9 <br /> 100pg/L= micrograms per liter <br /> 8 c <br /> o <br /> p = pS/cm = microSiemens per centimeter <br /> I19 _ <br /> a mg/L= milligrams per liter <br /> rn ; <br /> -100 = WQO=water quality objective (not established if not shown on individual graphs) <br /> v <br /> 6 o -200 <br /> r .a <br /> -300 <br /> .... FORMER MARLEY COOLING TOWER COMPANY <br /> 5 <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 SHALLOW WELL MW-202 <br /> GRAPH 14 <br />