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100,000 - Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 -- Arsenic <br /> 10,000 t Iron <br /> f Total Chromium 10 000 ——— WQO for Arsenic(10 Ng/L) <br /> Manganese <br /> Hexavalent Chromium --- WQO for Iron(300 Ng/L) <br /> J ——— WQO for Chromium(50 Ng/L) ——— WQO for Manganese(50 Ng/L) 1 pp <br /> Z 1,000 <br /> c 1,000 iAm _ _ <br /> t0 ^ J <br /> L <br /> .. 100 ----+ --------- '1 1 .► <br /> ------------------ 00 _ — ------- aas <br /> o�- <br /> V 10 +■► W. --------. --- - ----------- L 10 ®_ <br /> o .. <br /> _ _ s <br /> 10 ®_ <br /> C O o <br /> d <br /> 1 O v <br /> I�llil �Il"l"l"l o <br /> NAM <br /> 1 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 g <br /> 10 000 Total Or anic Carbon 10,000 Total Dissolved Solids and Electrical Conductivity <br /> 1,000 <br /> 100 <br /> 1,000 Am <br /> - <br /> rn <br /> al 00 n <br /> E ai in <br /> �- £ a ----------- ----pp—pp----------- — <br /> c i III <br /> r " U <br /> L 10 LL! <br /> 10 c <br /> as 100 - <br /> 0 <br /> vE <br /> v 1 <br /> .. •' • f DS <br /> EC _ <br /> WQO for Sulfate(250 mg/L) a <br /> --- WQO forTDS(450 mg/L) <br /> 1 p 10 <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 /> 500111 <br /> " 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 y Metals samples were filtered before analysis; concentrations are on a dissolved basis <br /> w Blue shading represents periods of treatment through vertical injection borings <br /> g ..... = 200 Red shading represents periods of treatment through the horizontal wells <br /> E = <br /> �- 100 pg/L= micrograms per liter <br /> a <br /> 8 NS/cm = microSiemens per centimeter <br /> p <br /> N a mg/L= milligrams per liter <br /> -100 a WQO=water quality objective (not established if not shown on individual graphs) <br /> v - <br /> 6 v -200 <br /> ;, `-V .j <br /> -300 <br /> 5 FORMER MARLEY COOLING TOWER COMPANY <br /> -400 <br /> STOCKTON,CALIFORNIA <br /> .: <br /> IN CHEMICAL CONCENTRATIONS OVER TIME IN 100- <br /> 4 500 <br /> Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 Jan. 2008 Jan. 2009 Jan. 2010 Jan. 2011 Jan. 2012 FOOT SAND WELL MW-310 <br /> GRAPH 30 <br />