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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> .... <br /> 10,000 +Total Chromium 10,000 --- WQOfor Arsenic(10Ng/L) <br /> Hexavalent Chromium s <br /> J ....................... <br /> .............. <br /> --- WQO for Chromium(50 Ng/L) _ <br /> z 1,000 = s 100 <br /> c 1,000 a <br /> o <br /> _J— — <br /> J --- --- ---l--- "� — -- <br /> L 100 � ■r�� _ -- p� <br /> m s <br /> 100 o <br /> 0 10 ° — --------`--- ---- ------ L 10 <br /> L s �+ <br /> Iron v <br /> 10 Manganese p " <br /> O U <br /> ——— WQO for Iron(300 Ng/L) <br /> 1 <br /> U <br /> --- WQO for Manganese(50 Ng/L) <br /> 1 <br /> 1 k161FE <br /> Jan. 2008 Jan. 2009 Jan. 2010 an. 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 /> —————————— ----------------- l000 <br /> 100 <br /> 1,000 <br /> E <br /> rn 31oo <br /> ........ <br /> ECO) <br /> ----------- ---------------------- <br /> ggpp <br /> c w I�INIIIN�tl <br /> .�L., 10 <br /> v 10 <br /> s <br /> c 100 <br /> 0 <br /> U <br /> o _ <br /> U 1 — <br /> € 0 --4—TDS <br /> EC <br /> 1 ——— WQO for Sulfate(250 mg/L) WQO for TDS(450 mg/L) <br /> p 10 ®_ m <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 sooii 17 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 <br /> r Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> 300 _....... <br /> p Y <br /> w o Blue shading represents periods of treatment through vertical injection borings <br /> > <br /> u <br /> c g _ 200 Red shading represents periods of treatment through the horizontal wells <br /> a E <br /> 100pg/L= micrograms per liter <br /> 8 0 _ S/cm - microSiemens per centimeter <br /> N <br /> p a mg/L= milligrams per liter <br /> -100 WQO=water quality objective not established if not shown on individual graphs) <br /> q Y 1 9 P ) <br /> o -200 <br /> s U © 71'A't V L <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 SHALLOW WELL MW-8 <br /> GRAPH 6 <br />