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100,000 100,000 1,000 <br /> Total and Hexavalent Chromium Iron and Manganese Arsenic <br /> 10,000 -Total Chromium <br /> 10,000 -- WQO for Arsenic(10 Ng/L) <br /> Hexavalent Chromium <br /> J --- WQO for Chromium 50 pg/L) <br /> z 1,000 = 100 <br /> -- = <br /> 1,000Hill <br /> 100 s _ <br /> m <br /> �- 100 0 <br /> c <br /> V10 ° - -- ------- °-- L 10 <br /> Aft <br /> L i+ <br /> "� C f Iron d <br /> v <br /> v <br /> 1 <br /> m10 Manganese <br /> O --- WQO for Iron(300 Ng/L) UMH <br /> U <br /> '• <br /> --- WQO for Manganese(50 ug/L) <br /> A <br /> 0.1 1 . 1 II[@f@@11[ . <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 10,000 Total Organic Carbon 10,000 Total Dissolved Solids and Electrical Conductivity <br /> --- -1--------: 1,000 <br /> -- --- - - - <br /> 100 E 1,000 <br /> rn a 100 <br /> • <br /> Eai -------- -------------------------- <br /> c <br /> c <br /> c 11911 <br /> R O U <br /> 10 - w <br /> c 10 <br /> c <br /> a� 100 <br /> d <br /> 0 <br /> U <br /> o <br /> v E <br /> ..e...... .. <br /> � t TDS <br /> U 1 <br /> --- WQO for Sulfate(250 mg/L) <br /> EC <br /> s --- WQO for TDS(450 mg/L) <br /> _ <br /> _ <br /> 1 T p ®_ .... 10 e <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 soo Oxidation-Reduction Potential Notes <br /> The first sample point on the graphs represents baseline conditions before remedial <br /> 500 activities affected groundwater in the vicinity of the well <br /> m 400 - ec values are plotted a reporting limit <br /> Non det t val ed ash If o f the <br /> 10 y Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> w o - Blue shading represents periods of treatment through vertical injection borings <br /> 9'c > 200 <br /> m _ Red shading represents periods of treatment through the horizontal wells <br /> 100 Ng/L= micrograms per liter <br /> 8 <br /> o NS/cm = microSiemens per centimeter <br /> c 0 <br /> mg/L= milligrams per liter <br /> rn 100 _ WQO=water quality objective (not established if not shown on individual graphs) <br /> v <br /> 0 200 <br /> -300 <br /> FORMER MARLEY COOLING TOWER COMPANY <br /> 5 <br /> m -400 STOCKTON,CALIFORNIA <br /> n - CHEMICAL CONCENTRATIONS OVER TIME IN 100- <br /> 4 ......:.®..... m 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 FOOT SAND WELL TW-16 <br /> GRAPH 56 <br />