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100,000 100,0001,000 <br /> Total and Hexavalent Chromium Iron and Manganese' Arsenic <br /> 10,000 --- WQO for Arsenic(10pg/ <br /> L) <br /> 10,000 <br /> J - <br /> z 1,000 - e 100 <br /> .. e <br /> o _ 1,000 ............ <br /> _ _ <br /> .+ ....................... <br /> _ J <br /> 1C J <br /> L .......... <br /> 100 --- -------� --- -- ....................... <br /> ----------------- ————————————————— e Z <br /> CID <br /> �• a <br /> 100 a <br /> �- c <br /> V 10 ° — �— ------- --- ------------ L 10 <br /> _ a _ - <br /> t Total Chromium 10 Iron _ v <br /> 1 — Hexavalent Chromium C Manganese o <br /> WQO for Chromium(50 Ng/L) U <br /> --- WQO for Iron(300 Ng/L) U <br /> WQO for Manganese(50 Ng/L) <br /> qrr€;, <br /> 0.1 IGlillll, <br /> := 1 1 IGI@ <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 /> 100 <br /> 1,000 — <br /> J <br /> rn 100 <br /> _ ......... <br /> E --------------- -- <br /> WJ. <br /> IIII�I <br /> 10 100 <br /> o <br /> c <br /> U 8 0 <br /> c <br /> v 1 _ <br /> ga <br /> TDS <br /> ——— WQO for Sulfate(250 mg/L) <br /> —0---ECMilli 9 <br /> a <br /> --- WQO for TDS(450 mg/L) a <br /> 1 0 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 rOxidation-Reduction Potential Notes <br /> MINI 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 <br /> r 300 Metals samplesY were filtered before analysis; concentrations are on a dissolved basis <br /> wBlue 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 2 pS/cm = microSiemens per centimeter <br /> p <br /> N E mg/L= milligrams per liter <br /> -100 WQO=water quality objective (not established if not shown on individual graphs) <br /> v <br /> o -200s <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <br /> -400 STOCKTON,CALIFORNIA <br /> 4 e -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-204 (S-8) <br /> GRAPH 15 <br />