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100,000Total and Hexavalent Chromium 100,000 Iron and Manganese 1,000 Arsenic <br /> Ii9ili9iBi <br /> n <br /> W Iron <br /> 10,000 <br /> Manganese —— WQO for Arsenic(10 Ng/L) <br /> 10,00 <br /> 0 <br /> --- WQO for Iron(300 Ng/L) <br /> Z I WQO for Manganese(50 ug/L) <br /> 1,000 100 " <br /> .� <br /> c <br /> 1,000 <br /> o <br /> J <br /> 100 ---�--- - -__ _ <br /> i————————————————— ———— ———————————— Z <br /> :L s <br /> 100 a p <br /> V 10 ° - -- -- - ----------- L 10 <br /> ._..... s <br /> W <br /> Y <br /> E � <br /> t Total Chromium v <br /> 10 p <br /> 1 — Hexavalent Chromium O U <br /> —— WQO for Chromium(50 Ng/L) U 1111 <br /> 0.1 <br /> 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 10 000 10,000 <br /> Sulfate Total Organic Carbon ,. Total Dissolved Solids and Electrical Conductivity <br /> -- -- --------- ---- 1,000 <br /> a <br /> aaa <br /> J <br /> 100 1,000 <br /> rn 1 OO <br /> C1 CO) <br /> O U <br /> ®_ <br /> LU <br /> lYLC <br /> L 10 <br /> 10 c 100 <br /> c <br /> oE <br /> Uc <br /> c _ <br /> v 1 _ <br /> g_ <br /> O --4—TDS <br /> ... EC a <br /> ——— WQO for Sulfate(250 mg/L) ........ <br /> --- WQO for TDS(450 mg/L) a <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 /> 500 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 /> 300 ®: <br /> p Y <br /> w o 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 /> Ak <br /> _ 9 p p 9 <br /> 100 _..:.: pg/L= micrograms per liter <br /> 8 o a pS/cm = microSiemens per centimeter <br /> 0 <br /> mg/L= milligrams per liter <br /> -100 WQO=water quality objective (not established if not shown on individual graphs) <br /> v <br /> o <br /> 6 <br /> -200 © 1°;i`-4 <br /> -300 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-206 <br /> GRAPH 17 <br />