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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese] 1,000 Arsenic <br /> 10,000 Total Chromium f Iron <br /> 10,000 _ —— WQO for Arsenic(10 Ng/L) <br /> Hexavalent Chromium Manganese <br /> ——— WQO for Iron(300 Ng/L) <br /> J --- WQO for Chromium(50N9/L) :-- <br /> z 1,000 <br /> ——— WQO for Manganese(50 Ng/L) 100 <br /> c 1,000 <br /> o <br /> _ _ <br /> t6 ^ J <br /> L <br /> 100 J ----------•--- ------- <br /> _ Z <br /> 100 p o <br /> ® _ <br /> O s — <br /> U 10 ° �------------`_--- — -- — L 10 _ <br /> .. s <br /> --- <br /> L <br /> 10 _ = c <br /> 1 = O <br /> U <br /> O _ <br /> U <br /> s......: <br /> 0.1 1 1 II <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 /> 1000----------- ----------------- a <br /> J <br /> 100 - E 1,000 - <br /> a 100 <br /> E C1 — — '— ----- <br /> -- ———— ------------- <br /> O <br /> C <br /> Rp <br /> 1 o J I G�NINI�IG.. <br /> 10 _ c 100 <br /> c . <br /> o E <br /> U <br /> v 1 _ <br /> :€ O TDS <br /> ——— WQO for Sulfate(250 mg/L) EC <br /> ——— WQO for TDS(450 mg/L) <br /> 1 0 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 /> 10y Metals samplesY were filtered before analysis; concentrations are on a dissolved basis <br /> 300 ........................_® _ <br /> r Blue shading represents periods of treatment through vertical injection borings <br /> c g _ 200 - s ding represents periods of treatment through t <br /> Red ha he horizontal wells <br /> ° 100 pg/L= micrograms per liter <br /> 8 0 = S/cm = microSiemens per centimeter <br /> p <br /> `r° E 0v mg/L= milligrams per liter <br /> N -100 v WQO=water quality objective (not established if not shown on individualgraphs) <br /> v <br /> s o -200 © 71'A a -V <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <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 INTERMEDIATE WELL MW-320 <br /> GRAPH 31 <br />