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100,000 100,000 1,000 <br /> Total and Hexavalent Chromium Iron and Manganese Arsenic <br /> 11119III�I <br /> 10,000 — .21 <br /> Iron <br /> EE WQO for Arsenic(10 Ng/L) <br /> 10,000 Manganese IIIIIIII <br /> ] --- WQO for Iron(300 Ng/L) <br /> ' mg <br /> J ;€ <br /> Z 1,000 ^ \ r — WQO for Manganese(50 Ng/L) 1�� <br /> 6 0 <br /> c 1,000 ®� =_ <br /> 0 <br /> .+ J <br /> i 100 ..... .. ------------- <br /> .. = z <br /> ---- ------ ----------------- �, m a <br /> m a <br /> �. <br /> 100a o <br /> U 10 ° #-------------=---- — — ------- L 10 <br /> a <br /> L s <br /> f Total Chromium = v <br /> 1 Hexavalent Chromium v 10 <br /> C O <br /> WQO for Chromium(50 u9/L) U UM. <br /> L <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 /> .....: g Y <br /> ————————————— ------------ 1,000 <br /> 100 <br /> 1,000 <br /> J -- <br /> rn 3100 <br /> E ai in <br /> �- £ a ---------------------- ---------- <br /> c E <br /> O <br /> OU <br /> r 10 W 1 <br /> c 10 J <br /> a� 100 <br /> o <br /> U <br /> 0 <br /> c <br /> U 1 <br /> ®_ <br /> O — TDS ®_ <br /> EC <br /> ——— WQO for Sulfate(250 mg/L) --- WQO for TDS(450 mg/L) <br /> 1 0 <br /> 10 <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 /> Well MW-4 was added to the sampling program in December 2010 <br /> 11 -_ 500 Non-detect values are plotted as half of the reporting limit <br /> 400 <br /> Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> 10 Blue shading represents periods of treatment through vertical injection borings <br /> �. 300 <br /> w75 <br /> a Red shading represents periods of treatment through the horizontal wells <br /> c g _ 200 = <br /> N9/L- micrograms per liter <br /> E - 9 <br /> 100 a pS/cm = microSiemens per centimeter <br /> 8 I ; o a mg/L= milligrams per liter <br /> cca 0 <br /> WQO-water quality objective (not established if not shown on individual graphs) <br /> -100 <br /> a - <br /> 7 <br /> va <br /> 6 v -200 © M W H <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 INTERMEDIATE WELL MW-4 <br /> GRAPH 3 <br />