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TABLE 5
<br /> LABORATORY ANALYTICAL RESULTS
<br /> 2012 ANNUAL GROUNDWATER MONITORING REPORT
<br /> FORMER MARLEY COOLING TOWER SITE
<br /> STOCKTON,CALIFORNIA
<br /> Page 6 of 22
<br /> Laboratory Analyses
<br /> Screened Hexavalent
<br /> Water-bearing Nitrate as N Calcium Chromium Chromium Manganese
<br /> Well Zone Sample Date Event/Purpose m /L* Sulfate (mg/L (mg/L Arsenic N /L) (pg/L) N /L** Iron(gg/L) (Ng/L) TDS(mg/L) TOC(mg/L
<br /> Water Quality Objective 10 250 10 50 50 300 50 450
<br /> In'ection Area Wells Continued
<br /> MW-301 Shallow 4/2/2008 2nd Qtr. 14.8 30.4 NA <5 108 100 335 <10 804 <1.0
<br /> 7/11/2008 3rd Qtr. 20.7 41.2 NA <5 100 90 1,200 <10 876 <1.0
<br /> 10/22/2008 4th Qtr. 16.3 36.0 NA <5 86 80 <100 <10 861J 1.4
<br /> 1/9/2009 1st Qtr. 17.1 29.8 NA <5 97 50 <100 <10 954 <1.0
<br /> 4/8/2009 2nd Qtr. 19.7 31.7 NA <5 90 90 667 <10 898 1.3 J
<br /> 7/15/2009 3rd Qtr. NA 36.1 NA <5 95 100 1,080 <10 816 1.9
<br /> 10/15/2009 4th Qtr. NA 35.6 NA 3 86 100 735 <10 855 1.3
<br /> 10/15/2009 4th Qtr.(Dup) NA 35.7 NA 3 91 120 708 <10 856 1.5
<br /> 2/2/2010 1 st Qtr. NA 42.8 NA 2 88 80 918 <10 873 0.6
<br /> 4/15/2010 2nd Qtr. NA 44.7 NA 3 125 120 682 <10 806 0.7U
<br /> 7/8/2010 3rd Qtr. NA 47.3 NA 3J 130 120 782 <10 832 0.91
<br /> 10/14/2010 4th Qtr. NA 68.6 NA 2J 144 140 1,040 <10 860 1.0
<br /> 4/18/2011 2nd Qtr. NA 56.7 NA 3J 90 89.5 284 <10 872 0AJ
<br /> 7/20/2011 3rd Qtr. NA 44.2 NA 2J 100 100 663 <10 807 1.11
<br /> 10/13/2011 4th Qtr. NA 35.3 NA 2J 135 135.0 563 <10 941 0.5J
<br /> 1/25/2012 1st Qtr. NA 33.7 NA 2J 195 110 133 8J 935 1.6
<br /> 4/30/2012 2nd Qtr. NA 41.1 NA 2J 63 59.6 399 130 989 2.8
<br /> 4/30/2012 2nd Qtr.(Dup) NA 40.5 NA 2J 62 59.0 400 130 966 2.9
<br /> 7/18/2012 3rd Qtr NA 73.3 NA 2J 49 42.7 596 150 1,150 2.3
<br /> 10/24/2012 4th Qtr NA 105.0 NA 2J 24 23.2 745 110 961 2.2
<br /> MW-303 Shallow 4/2/2008 Baseline/2nd Qtr 18.4 34.9 NA <5 94 90 452 <10 852 <1.0
<br /> 5/20/2008 Supplemental 17.8 44.6 NA <5 88 70 538 <10 848J 2.0
<br /> 7/11/2008 3rd Qtr. 7.2 35.0 NA 6 <10 <10 1,280 4,200 863 42.0
<br /> 10/21/2008 4th Qtr. 14.3 38.1 NA <5 62 30 <100 1,300 532 3.1
<br /> 1/9/2009 1st Qtr. 15.4 39.6 NA <5 89 40 <100 480 838 1.7
<br /> 4/8/2009 2nd Qtr. 10.3 34.6 NA <5 47 30 648 J 170 807 1.4 J
<br /> 7/15/2009 3rd Qtr. NA 16.7 NA 9 14 10 1,120 5,020 856 23.0
<br /> 7/15/2009 3rd Qtr.(Dup) NA 16.4 NA 8 <10 <10 1,140 5,000 878 23.0
<br /> 10/14/2009 4th Qtr. NA 13.9 NA 3 6 <10 1,400 5,380 938 24.0
<br /> 2/2/2010 1st Qtr. NA 9.9 NA 3 37 <10 1,560 4,910 937 6.9
<br /> 4/14/2010 2nd Qtr. NA 14.3 NA 2 27J <10 1,060 4,160 891 3.0
<br /> 7/8/2010 3rd Qtr. NA 66.5 NA 3J 22 <10 1,270 3,650 887 2.3
<br /> 10/14/2010 4th Qtr. NA 129 NA 11 18 <10 1,870 3,680 880 2.2
<br /> 1/25/2011 1st Qtr. NA 92.6 NA 4J 23 <0.2 1,710 3,630 888 1.3J
<br /> 4/14/2011 2nd Qtr. NA 110 NA 8 12 <0.2 2,220 3,650 893 1.3
<br /> 7/21/2011 3rd Qtr. NA 89 NA 7 3J <10 1,570 4,460 896 1.2
<br /> 10/13/2011 4th Qtr. NA 80.1 NA 8 5J <0.5 716 3,570 940 0.91
<br /> 1/25/2012 1st Qtr. NA 32.7 NA 7 3J <0.5 1,250 3,430 826 1.5
<br /> 4/25/2012 2nd Qtr. NA 26.1 NA 9 5J <0.5 885 4,490 785 1.6
<br /> 4/25/2012 2nd Qtr.(Dup) NA 26.5 NA 9 4J <0.5 883 4,620 774 1.6
<br /> 7/24/2012 3rd Qtr NA 29.6 NA 8 5J <0.5 582 3,960 770 1.0
<br /> 10/23/2012 4th Qtr NA 32.1 NA 9 3J <0.5 468 3,430 883 2.3
<br /> 10/23/2012 4th Qtr(Dup) NA 31.3 NA 9 3J <0.5 480 3,460 883 0.81
<br /> TW-12 Shallow 1/9/2008 Baseline 6.8 49.4 NA <5 <10 <10 305 250 591 4.2
<br /> 4/1/2008 2nd Qtr. 8.4 51.9 NA <5 12 <10 258 910 700 2.9
<br /> 7/10/2008 3rd Qtr. 8.4 37.3 NA <5 13 10 750 120 624 2.4
<br /> 10/22/2008 4th Qtr. 9.2 33.9 NA <5 12 <10 <100 230 576J 14.0
<br /> 1/8/2009 1st Qtr. <1 13.7 J NA 5 13 <10 <100 2,180 707 1.9
<br /> 1/8/2009 1st Qtr.(Dup) <1 13.6 J NA 6 13 <10 <100 2,190 708 1.5
<br /> 4/7/2009 2nd Qtr. <1 14.7 NA 6 <10 <10 725 3,560 767 4.3 J
<br /> 7/14/2009 3rd Qtr. NA 8.8 NA <5 <10 <10 511 2,260 500 7.2
<br /> 10/12/2009 4th Qtr. NA 19.5 NA 4 19 <10 822 3,500 780 2.1
<br /> 2/1/2010 1st Qtr. NA 21.0 NA 8 34 <10 866 3,760 690 0.9U
<br /> 4/13/2010 2nd Qtr. NA 15.5 NA 4 14 <10 354 2,830 561 2.2
<br /> 7/7/2010 3rd Qtr. NA 34.5 NA 10 17 <10 639 3,860 688 2.1
<br /> 10/12/2010 4th Qtr. NA 27.8 NA 7 16 <10 537 2,740 584 3.6
<br /> 1/20/2011 1 st Qtr. NA 37.3 NA 9 12 <0.2 674 4,300 761 1.3
<br /> 4/13/2011 2nd Qtr. NA 62.5 NA 9 14 <0.2 663 4,910 802 2.3
<br /> 7/19/2011 3rd Qtr. NA 107.0 NA 11 91 <10 420 4,990 858 1.5
<br /> 10/12/2011 4th Qtr. NA 163.0 NA 15 3J <0.5 750 6,070 1,030 1.1
<br /> 1/25/2012 1st Qtr. NA 149 NA 11 <10 <0.5 1,460 5,020 776 2.4
<br /> 4/25/2012 2nd Qtr. NA 279 NA 25 6J <0.5 4,720 9,610 1,140 1.7
<br /> 7/24/2012 3rd Qtr. NA 191 NA 13 3J <0.5 1,250 6,160 889 2.3
<br /> 10/23/2012 4th Qtr NA 277 NA 9 4J <0.5 753 7,420 1,080 3.1
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