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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> 10,000 "I <br /> f <br /> 10,000 <br /> Total Chromium --- WQOforArsenic(10Ng/L) <br /> a <br /> J _ <br /> Hexavalent Chromium <br /> a <br /> "' 100 <br /> Z 1,Opp ——— WQO for Chromium(50 ug/L) a _ <br /> c 1,000 ....am a -- <br /> o - _ <br /> _ <br /> J <br /> y° 100 it J — ---- --� ---- -- <br /> L <br /> � a <br /> d <br /> s...:.:' c 100 = o <br /> �����r <br /> U 10 ° #�— -- <br /> - <br /> ———— ------ — — L 10 - <br /> rt <br /> Y <br /> Iron d <br /> C <br /> v 10 Manganese o <br /> WQO for Iron(300 Ng/L) <br /> U <br /> m <br /> U ——— WQO for Manganese(50 Ng/L) <br /> i <br /> 0.1 = .s......1 1 1 I91&191II91II <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 an. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 <br /> 1,000 Sulfate 10 000 Total Or anic Carbon 10 000 Total Dissolved Solids and Electrical Conductivity <br /> Y <br /> -- 1,000 <br /> 100 1,000 <br /> E <br /> rn <br /> al ` <br /> E ai <br /> --- ------ — — — ------ -- <br /> c E �--� <br /> is o U <br /> L - •- 10 LU <br /> L <br /> � 10 : � 100 ;.. .... - <br /> a� <br /> c d <br /> o E <br /> U <br /> _? <br /> 0 <br /> U 1 <br /> N ®_. <br /> O �TDS <br /> WQO for Sulfate(250 mg/L) <br /> EC <br /> —— WQO for TDS(450 mg/L) <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 /> ITT <br /> The first sample point on the graphs represents baseline conditions before remedial <br /> 11 __ 500 activities affected groundwater in the vicinity of the well <br /> ® 9 Y <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 /> w o a Blue shading represents periods of treatment through vertical injection borings <br /> '� 9 i � 200 <br /> a _ Red shading represents periods of treatment through the horizontal wells <br /> a E l <br /> 100 pg/L= micrograms per liter <br /> -a 8 - <br /> Illi o v pS/cm = microSiemens per centimeter <br /> 0 mg/L= milligrams per liter <br /> -100 a WQO=water ualit ob'ective not established if not shown on individual ra hs <br /> rn � � <br /> o -200 u, <br /> s U © 71,A) " <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-105 <br /> GRAPH 11 <br />