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TABLE I <br /> LABORATORY ANALYTICAL RESULTS <br /> FORMER MARLEY COOLING TOWER SITE <br /> STOCKTON,CALIFORNIA <br /> Page 23 of 24 <br /> Laboratory Analyses <br /> Screened Hexavalent <br /> Water-bearing Nitrate as N Calcium Chromium Chromium Manganese <br /> Well Zone Sample Date Event/Purpose mglL* Sulfate mg1L mgjL Arsenic pgIL g!L) (pg/L)** Iron 040 (pg/L) TQ5 mg1L TOC mg/L <br /> Water Quality Objective 10 250 10 50 50 300 50 450 -- <br /> Quality Control Samples Continued <br /> <5 <10 <10 <50 <10 <10 <1.0 <br /> Field Blank1!812008 Baseline <1 <1 NA <1.0 <br /> 111012008 Baseline <1 <1 NA <5 <10 <10 <50 <10 <10. <br /> 1114!2008 Baseline <1 <1 NA <6 <10 <10 <50 <10 12 <1.9 <br /> 1/21/2008 Baseline <1 2.9 NA <5 <10 <10 <50 <10 <10 <1.0 <br /> 2/412008 Background <1 4.5 NA <5 <10 <10 <50 <10 <10 <i.0 <br /> 311912008 Baseline <1 4.8 NA <br /> <5 <10 <10 <50 <10 12 <1.0 <br /> 4/112008 Baseline/2nd Qtr <1 1.0 NA <5 <10 <10 <50 <10 <10 <1.0 <br /> 41212008 Baseline/2nd Qtr <1 1.3 NA <br /> <5 00 <10 <50 <10 <10 <1.0 <br /> 5/20/2008 Supplemental <1 5.3 NA <5 <10 <10 <50 <10 18 <1.0 <br /> 7/10/2008 3rd Qtr. <1 <1 NA <5 <10 <10 <50 <10 25 <1.0 <br /> 7/11/2008 3rd Qtr, 0.9 5.6 NA <5 <10 <10 <50' <10 18 <1.0 <br /> 10/21/2008 4th Qtr. <1 <1 NA <5 <10 <10 <100 <10 24 7.1 <br /> 10122/2008 4th Qtr. <1 5.6 NA <6 <10 <10 <100 <10 <1OUJ <1.0 <br /> 1/8/2009 1st Qtr, <1 6.0 NA <5 <10 <10 <100 <10 25 <1.0 <br /> 1/9/2009 1st Qtr. <1 <1 NA <5 <10 <10 <100 <10 <10 <1.0 <br /> 111212009 1st Qtr. <1 <1 NA <5 <10 <10 <100 <10 <10 <1.0 <br /> ' 4/7/2009 2nd Qtr, <br /> <1 <1 NA <5 <10 <10 <50 <10 28 1.8 <br /> 4/8/2009 2nd Qtr. <1 <1 NA <5 <10 <10 <50 <10 <10 1.5 <br /> 7/14/2009 3rd Qtr. NA <i NA <5 <i0 <10 <50 <10 13 1.7 <br /> 7/15/2009 3rd Qtr, NA 1.1 NA <br /> <5 -i 0 <10 <60 <10 12 3.2 <br /> 10/14/2009 4th Qtr. NA 5.8 NA 2 5 <10 759 20 16 1.6 <br /> 212/2010 1st Qtr. NA <1 NA <5 <10 <10 <50 <10 14 0.3 <br /> 2/3/2010 1st Qtr, NA 3.5 NA <5 <10 <10 <50 <10 8 0.3 <br /> 211/2010 1st Qtr. NA 2.2 NA <5 <10 <10 <50 <10 <10 0.3 <br /> 4/13/2010 2nd Qtr. NA <i NA <5 <10 <10t1J <50 <10 42 0.4 <br /> 4/14/2010 2nd Qtr. NA <1 NA <5 <10 <10 <50 <10 8 0.2 <br /> 4/1512010 2nd Qtr. NA <1 NA <5 <10 <10 <50 <10 27J 0.2 <br /> 7/712010 3rd Qtr. NA <1 NA <5 <10 <10 <50 <10 <10 0.51 <br /> 7/8/2010 3rd Qtr. NA <1 NA <5 <10 <10 <50 <10 <10 0.2J <br /> 8/16/2010 3rd Qtr. NA 5.62 NA <5 <10 <10 <br /> <50 NA <10 <1.0 <br /> 8!2312010 3rd Qtr, NA 1.10 NA <5 <1O <10 <50 NA 29 0.7J <br /> 10/12/2010 4th Qtr. NA 1.3 NA <5 <10 <10 <50 <10 21 0.51 <br /> 1011312010 4th Qtr. NA 6.3 NA <5 <10 <10 <br /> <50 <i0 15 0.81 <br /> 10/14/2010 4th Qir. NA 1.2 NA <br /> <5 <10 <10 <50 <10 <10 0.2J <br /> 1202010 4th Qtr. NA <1 NA <5 <10 <10 <50 <10 <10 0.31 <br /> 1218/2010 4th Qtr. NA <1 NA <5 <10 <10 <br /> <50 <Icr <10 0.4J <br /> 1!2012011 1st Qtr. NA 2.9J NA <5 <10 0.2UJ <50 <10 j 7.OJ 0.081 <br /> 1121!2011 1st Qtr. NA 0.31 NA <5 <10 0,21-1J <50 <10 <10 0.11 <br /> 1125!2011 1st Qtr. NA 1.8 NA <5 <10 <0.2 <50 <10 <10 0.2J <br /> 4/13/2011 2nd Qtr. NA <1 NA <5 <10 <0.2 <50 <10 <10 <1.0 <br /> 4/14/2011 2nd Qtr. NA <1 NA <5 <10 <0.2 <50 <10 <10 <1.0 <br /> 4/18/2011 2nd Qtr. NA 1.6 NA <5 <10 <0.2 <50 <i0 <10 <1.0 <br /> 512312011 Supplemental NA NA NA NA <10 <0.2 <50 <10 NA 1.0 <br /> 6/20/2011 Supplemental NA NA NA NA <br /> <10 <0.2 <50 <10 NA 0.51 <br /> 7/19/2011 3rd Qtr, NA 0.4J NA <5 <10 <10 <50 <10 <5 0.31 <br /> 7/20/2011 3rd Qtr. NA 1.2 NA <5 <10 <10 <50 <10 7.OJ 0.91 <br /> 7/21/2011 3rd Qtr. NA 0,31 NA <5 <10 <10 <50 <10 <10 0.11 <br /> 8/2212011 Supplemental NA NA NA NA - <br /> <10 <0.2 <50 <10 <10 0.9J <br /> 10/12/2011 4th Qtr. NA <1 NA <5 <10 <0.5 <50 <10 <10 0.2J <br /> 10!1312011 4th Qtr. NA <1 NA <6 <10 <0.5 <50 <10 <10 0.71 <br /> 10/17/2011 4th Qtr, NA <1 NA <5 <10 <0.5 <50 <i0 <10 0.2J <br /> 1/24/2012 1st Qtr. NA <1 NA <5 <10 <0.5 <60 <10 <10 0.7J <br /> 1/25/2012 1st Qtr. NA <1 NA <5 <10 <0.5 <50 <10 <10 0131 <br /> 1!2612012 1st Qtr. NA <1 NA <5 <iO <0.5 <br /> <50 <10 <10 0.31 <br /> 4124/2012 2nd Qtr. NA <1 NA <5 <10 <0.5 <50 <10 <10 0.51 <br /> 412512012 2nd Qtr. NA <1 NA <5 <10 <0.5 <50 <10 81 0,81 <br /> 4/26/2012 2nd Qtr. NA 0.81 NA <5 <10 <0.5 <br /> <50 <10 <10 1.1 <br /> 4/3012012 2nd Qtr. NA <1 NA <br /> <5 <10 <0.5 <50 <10 81 0.91 <br /> 5/2/2012 2nd Qtr. NA <1 NA <5 <10 <0.5 <50 <10 7J 0.11 <br />