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100,000 100,0000l1,000 <br /> Total and Hexavalent Chromium Iron and Manganese' Arsenic <br /> 10,000 0 Total Chromium <br /> 10,000 e ——— WQO for Arsenic(10 Ng/L) <br /> 0 Hexavalent Chromium a <br /> J ——— WQO for Chromium(50 Ng/L) s <br /> z 1,000 - e 100 <br /> a <br /> c 1,000 <br /> o _ <br /> 100 <br /> J <br /> ----------- p� <br /> e Z <br /> r a ®_ <br /> C ----------------- ———— ----------- Z — s o .......:€ <br /> 100 _ o <br /> 010 ° �— --------=_---- ----------- L 10 <br /> a <br /> L e _ <br /> C 0 Iron d <br /> v <br /> 10 Manganese o <br /> 1 UO --- WQO for Iron(300 Ng/L) <br /> U <br /> ——— WQO for Manganese(50 Ng/L) <br /> i. <br /> 1 ;T rrrrrT 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 Sulfate 10,000 Total Organic Carbon] 10 000 Total Dissolved Solids and Electrical Conductivity <br /> .. -- ------------ 1,000 <br /> J <br /> 100 - E 1,000 -� <br /> rn 100 <br /> v <br /> C1 --—————————— —————————————————— —— <br /> C <br /> o IIII�I <br /> � L 10 LL! ; <br /> � 10 c <br /> 100 ._. . <br /> c <br /> o <br /> U c <br /> O c <br /> v 1 <br /> O TDS <br /> EC <br /> WQO for Sulfate(250 mg/L) <br /> -- WQO for TDS(450 mg/L) a <br /> 1 0 10 ®_: m <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 Oxidation-Reduction Potential Notes <br /> The first sample point on the graphs represents baseline conditions before remedial <br /> 11500 - activities affected groundwater in the vicinity of the well <br /> :.. <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 <br /> r Blue 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 /> 80 0 pS/cm = microSiemens per centimeter <br /> N ili mg/L= milligrams per liter <br /> °° 0 -100 WQO=water quality objective not established if not shown on individual graphs) <br /> v = q Y 1 9 P ) <br /> o -200 <br /> s © 71 a rV" <br /> A <br /> -300 <br /> .:: FORMER MARLEY COOLING TOWER COMPANY <br /> 5 <br /> -400 STOCKTON,CALIFORNIA <br /> 4 -500 r 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 TW-12 <br /> GRAPH 48 <br />