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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> Total Chromium <br /> 10,000 <br /> 0-- 10,000 = —— WQO for Arsenic(10 Ng/L) <br /> a <br /> _ Hexavalent Chromium <br /> J —— WQO for Chromium(50 ug/L) s <br /> z 1,000 m s 100 <br /> m - <br /> 0 1,000 -- -_ <br /> i <br /> .c. <br /> 100 — -- -------- a ——————— L�• <br /> 100 <br /> °mU 10 -_ ------------- -s- <br /> ------- — ----------------- <br /> 10 10v <br /> _- <br /> Iron <br /> 1 — Manganese U <br /> U <br /> --- WQO for Iron(300 ug/L) <br /> ——— WQO for Manganese(50 Ng/L) <br /> 0.1 i...=.... 1 I : 1 illi is€sloiii <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 10 000 10 000 <br /> Sulfate Total Organic Carbon Total Dissolved Solids and Electrical Conductivity <br /> 1,000 <br /> ..:i <br /> J <br /> 100 E 1,000 e _ <br /> J 1 0D RIMIRIMIRI <br /> C1 U ——— ——— ——— ———————— <br /> C <br /> L 1 <br /> W <br /> 0 <br /> 10 c 100 <br /> c <br /> o ° <br /> d <br /> U c <br /> U 1cn ...-- <br /> .... IIID. o t TDS <br /> 1 EC——— WQO for Sulfate(250 mg/L) WQO for TDS(450 mg/L) <br /> 0 33 10 ®- <br /> Jan. 2008 Jan. 2009 an. 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 - y Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> 300 --.: <br /> p Y <br /> w <br /> 0 .................. <br /> 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 /> 8 JP <br /> 0 S/cm - microSiemens per centimeter <br /> 0 N <br /> N it r a mg/L= milligrams per liter <br /> 0 -100 a WQO=water quality objective (not established if not shown on individual graphs) <br /> W. <br /> 0 -200 - <br /> s U © 71'A`_rV L <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <br /> -400 STOCKTON,CALIFORNIA <br /> 4 -500 CHEMICAL CONCENTRATIONS OVER TIME IN 100- <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 FOOT SAND WELL TW-15 <br /> GRAPH 51 <br />