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100,000 Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> ... ...; <br /> HER <br /> 10,000 Total Chromium MENIron <br /> 10,000 Manganese —— WQO for Arsenic(10 Ng/L) <br /> 0 Hexavalent Chromium EEi°iEipi <br /> HEMMEMEM --- WQO for Iron(300 MEMEMEMENg/L) <br /> JMEMMUMMUffl�BAH MERE <br /> — WQO for Chromium(50 Ng/L) <br /> Z 1 000 ® —— <br /> WQO for Manganese(50 Ng/L) 100HERE! _ MEREhhhhN <br /> .� bhbimm <br /> c 1,000 sE MERE <br /> c Ehbhbi <br /> E MERE <br /> ffifflfflflfflfflflfflfflmm <br /> -_ <br /> .. hbhbi <br /> _J -_ <br /> MERE <br /> 100 _J --- ------- --. -- p� _ <br /> MERE-- <br /> MERE <br /> E MERE <br /> ———-——— —————————————————————————— °1 r_ 4.bhbi2 E MERE <br /> r 100 o = <br /> V10 - — - ° �— -------- --- ----------- L 10 =_ <br /> LW HERE! MERE <br /> �+ <br /> ahbhbi <br /> - <br /> w <br /> n HERE! <br /> 10 m <br /> 1 <br /> o m vRERM <br /> U _ <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 10 000 Total Organic Carbon 10 000 Total Dissolved Solids and Electrical Conductivity <br /> - ------ ----------------- 1,000 <br /> 100 -- 1,000 <br /> rn o 3100 E <br /> E CO) --------- -- <br /> E a- ----------- ----- <br /> c e ... <br /> o10 LU <br /> IIII II <br /> 10100 ...: <br /> c <br /> o c <br /> E <br /> v <br /> G — <br /> U 1 = <br /> O --4—TDS <br /> EPA <br /> ——— WQO for Sulfate(250 mg/L) _ €€ <br /> EC <br /> --- WQO for TDS(450 mg/L) <br /> 1 0 10 a <br /> Jan. 2008 Jan. 2009 an. 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 /> Igia 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 /> 400 Non-detect values are plotted as half of the reporting limit <br /> flfflfll <br /> 10 <br /> r 300 :000....._ 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 /> c g _ 200 Red shading represents periods of treatment through the horizontal wells <br /> — - <br /> HENT <br /> 100 = pg/L= micrograms per liter <br /> 8 <br /> .2 0 pS/cm = microSiemens per centimeter <br /> E - mg/L= milligrams per liter <br /> -100 WQO=water quality objective not established if not shown on individual graphs) <br /> q Y 1 9 P ) <br /> 6 o -200 <br /> U <br /> -300 FORMER MARLEY COOLING TOWER COMPANY <br /> ..... <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-300 <br /> GRAPH 25 <br />