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100,000 - Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> IiBiBiBiBi <br /> �Iron <br /> 10,000 0 Total Chromium <br /> Hexavalent Chromium 10,000 —0 Manganese —— WQO for Arsenic(10 Ng/L) <br /> —— WQO for Iron(300 Ng/L) <br /> J —-- WQO for Chromium(50 Ng/L) ——— WQO for Manganese(50 Ng/L) m <br /> ®— o <br /> z 1,000 _ s 100 <br /> c 1,000 <br /> J e <br /> 100m - <br /> L <br /> *+ <br /> ————————————————— ————————————————— Z s <br /> d s <br /> 100 e p <br /> V 10 -- -------- --- - ----------- ;° 10 <br /> o .. a <br /> L e �+ <br /> d s <br /> 10 <br /> 1 V V <br /> I <br /> �Iwl�l�l <br /> 0.1 <br /> 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 10 000 10 000 <br /> Sulfate Total Organic Carbon Total Dissolved Solids and Electrical Conductivity <br /> ---------- ------------------ 1,000 <br /> 100 1 1,000 <br /> rn <br /> al 00 <br /> Ee ai (0) ----------------------------------- <br /> =_ <br /> £ c <br /> L) <br /> ® 2 <br /> :r <br /> c <br /> 10 c <br /> c 100 <br /> E <br /> o _ <br /> v 1OA <br /> ®- <br /> €... �TDS <br /> WQO for Sulfate(250 mg/L) <br /> EC <br /> --- WQO for TDS(450 mg/L) <br /> 0 i <br /> 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 /> 12pH 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 - p Y <br /> wBlue shading represents periods of treatment through vertical injection borings <br /> c g _ 200 <br /> Red shading represents periods of treatment through the horizontal wells <br /> 100 - pg/L= micrograms per liter <br /> 8 o aS/cm - microsiemens per centimeter <br /> c 0 N - <br /> N r a mg/L= milligrams per liter <br /> .. = <br /> -100v WQO-water quality objective (not established if not shown on individual graphs) <br /> o -200 <br /> 6 <br /> -300 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 SHALLOW WELL MWA02 <br /> GRAPH 9 <br />