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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 /> 22222 <br /> Hexavalent Chromium 10,000 Manganese —— WQO for Arsenic(10 Ng/L) <br /> WQO for Iron(300 Ng/L) <br /> WQO for Chromium(50 Ng/L) WQO for Manganese(50 Ng/L) 100 <br /> Z 1,000 <br /> O <br /> w Illllllllllll�l�iiili�i 1,000 <br /> t0*Lmc. <br /> `J <br /> 100 -----------------------"� R <br /> �: z <br /> 100 o <br /> O U 10 o 10 <br /> s <br /> L �+ <br /> 10 <br /> c <br /> m � <br /> 1O <br /> ....... U U <br /> �F...€.... . <br /> 0.1 <br /> 1 , , 1 <br /> ..:: <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 <br /> 1,000 Sulfate <br /> 10,000 Total Or anic Carbon 10,000 Total Dissolved Solids and Electrical Conductivity] <br /> Y <br /> ----- - ---------------------- - -- 1,000 <br /> M. <br /> 100 _ E 1,000 <br /> Rill <br /> rn 100 _ <br /> i� <br /> E ------ <br /> - <br /> gc <br /> c ;, U <br /> 1 g ®_ <br /> 100 = <br /> cv E <br /> o <br /> U <br /> 0 c <br /> o - _ <br /> U 1 = <br /> - G 0 TDS <br /> EC <br /> --- WQO for Sulfate(250 mg/L) ®, --- WQO for TDS(450 mg/L) .! <br /> .. 10 _ <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 <br /> 12 PH 600 Oxidation-Reduction Potential Notes <br /> 500 The first sample point on the graphs represents baseline conditions before remedial <br /> 11activities affected groundwater in the vicinity of the well <br /> _® 400 _ _ Non-detect values are plotted as half of the reporting limit <br /> 10 = Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> m: Q <br /> 300 -m <br /> w ®_ Blue shading represents periods of treatment through vertical injection borings <br /> c g _ 200 Red ha represents periods of treatment through t shading— s he horizontal wells <br /> 100 s pg/L= micrograms per liter <br /> 8 0 <br /> c �, pS/cm = microsiemens per centimeter <br /> _ <br /> N E ®_ mg/L= milligrams per liter <br /> 7 -100 - WQO=water quality objective (not established if not shown on individual graphs) <br /> - o _ <br /> 6 - v 200 71.1`_V"L`j <br /> - <br /> -300 <br /> FORMER MARLEY COOLING TOWER COMPANY <br /> . € <br /> 5 _ <br /> ®® m _ STOCKTON,CALIFORNIA <br /> 400 <br /> CHEMICAL CONCENTRATIONS OVER TIME IN <br /> 4 ®mmm 500 <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2013 DEEP WELL MW-361 <br /> GRAPH 37 <br />