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100,000Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> 10,000 t Iron <br /> 0 Total Chromium 10,00 p WQO for Arsenic(10 Ng/L) <br /> � Manganese <br /> Hexavalent Chromium WQO for Iron(300 Ng/L) <br /> J ——— WQO for Chromium(50 pg/L) for Manganese(50 Ng/L) 100 <br /> Z 1,000 <br /> c <br /> 1,000 s <br /> i <br /> 100 :.. ---- — — ----- _ - <br /> �. - <br /> ——————— -------- ----------------- <br /> z <br /> �. <br /> 100 e o <br /> V 10 ° M.— —— ----------- L 10 <br /> s <br /> e-_ -_ <br /> 1 NC 10 <br /> ` O <br /> 6/--�—.......€ <br /> IAIRIM..e:l. <br /> IAIAIAIAI .. <br /> j <br /> — <br /> 0.1 .s......: <br /> 1 I01. 1 ibli E <br /> Jan. 2008 Jan. 2009 Jan. 2010 an. 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 /> —————————— ------------------ <br /> 1 000 <br /> J 100 - 1000 <br /> � , <br /> rn 100 ......... n, <br /> Eai416. — — —— <br /> £ a <br /> c ,. <br /> o <br /> t. m <br /> G <br /> R r, 1 p w <br /> L <br /> G> <br /> 10 <br /> a� 100 <br /> O C <br /> UAk <br /> O <br /> U 144444 - <br /> a <br /> O TDS <br /> 110 0EC – <br /> WQO for Sulfate(250 mg/L) WQO for TDS(450 mg/L) <br /> W a <br /> - a <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 /> 12 PH soo Oxidation-Reduction 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 A- y Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> 300 <br /> w = Blue shadingrepresents periods of treatment through vertical injection borings <br /> p p 9 1 9 <br /> c g 200 a Red shading represents periods of treatment through the horizontal wells <br /> D — - <br /> E 100 pg/L= micrograms per liter <br /> 8 I t: o a pS/cm = microsiemens per centimeter <br /> 0 <br /> a mg/L= milligrams per liter <br /> N e.: <br /> 7 -100 a <br /> WQO=water quality objective (not established if not shown on individual graphs) <br /> a <br /> 6 v -200 T u <br /> -300 <br /> © l r't rV" <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-302 <br /> GRAPH 27 <br />