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TABLE 5
<br /> LABORATORY ANALYTICAL RESULTS
<br /> 2013 SEMIANNUAL GROUNDWATER MONITORING REPORT
<br /> FORMER MARLEY COOLING TOWER SITE
<br /> STOCKTON,CALIFORNIA
<br /> Page 9 of 25
<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(pg/L) (pg/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 /> Shallow/ 4/1/2008 Dudek Qtrly.Event NA NA NA NA 166 NA NA NA NA NA
<br /> EW-1 5/16/2008 Supplemental NA 275 NA 27 NA <0.5 NA <10 NA NA
<br /> Intermediate 7/10/2008 3rd Qtr. 1.5 38.0 NA 13 <10UJ <10 1,1001 6,100 777 240
<br /> 10/21/2008 4th Qtr. <1 10.9 NA <5 12 <10 122 4,500 660 18
<br /> 1/8/2009 1st Qtr. <1 34.2 NA <5 37 <10 225 3,360 688 1.6
<br /> 4/7/2009 2nd Qtr. <1 78.5 NA <5 <10 <10 783 3,720 764 2.7 J
<br /> 7/14/2009 3rd Qtr. NA 25.4 NA <5 <10 <10 458 500 610 1.6
<br /> 10/12/2009 4th Qtr. NA 75.7 NA 1 16 <10 608 2,320 723 1.8
<br /> 2/1/2010 1st Qtr. NA 61.6 NA 1 29 <10 667 2,460 758 1.11
<br /> 4/13/2010 2nd Qtr. NA 96.2 NA 1 24 <10 394 4,380 696 <1
<br /> 7/7/2010 3rd Qtr. NA 81.9 NA 2J 11 <10 534 1,670 646 0.7J
<br /> 10/13/2010 4th Qtr. NA 90.4 NA 2J 14 <10 742 5,510 680 1.3
<br /> 1/21/2011 1st Qtr. NA 81.0 NA 8 11 <0.2 495 4,800 768 <1.0
<br /> 4/13/2011 2nd Qtr. NA 93.8 NA 6 6J <0.2 1,320 5,270 702 0.91
<br /> 7/20/2011 3rd Qtr. NA 69.9 NA 2J 4J <10 505 1,170 629 1.01
<br /> 10/12/2011 4th Qtr. NA 81.7 NA 6 <10 <0.5 523 3,810 724 0.7J
<br /> 1/24/2012 1st Qtr. NA 80.3 NA 5 3J <0.5 355 3,620 684 1.4
<br /> 4/24/2012 2nd Qtr. NA 76.7 NA 6 <10 <0.5 315 3,840 697 1.3
<br /> 7/18/2012 3rd Qtr NA 69.8 NA 3J <10 <0.5 315 1,790 687 0.91
<br /> 10/22/2012 4th Qtr NA 89.0 NA 8 <10 <0.5 1,500 3,100 669 1.6
<br /> 10/22/2012 4th Qtr(Dup) NA 79.1 NA 8 <10 <0.5 389 3,050 676 1.7
<br /> 1/24/2013 1st Qtr. NA 89.2 NA 6 4J <0.5 884 3,070 746 0.6J
<br /> 4/10/2013 2nd Qtr. NA 67.7 NA 5 <10 <0.5 <50 2,550 673 0.81
<br /> TW-13 100-Ft.Sand 1/10/2008 Baseline 8.8 45.9 NA <5 8,500 8,500 249 20 547 <1
<br /> 4/2/2008 2nd Qtr. 2.1 49.7 NA 6 2,420 2,420 176 1,920 563 240
<br /> 7/11/2008 3rd Qtr. 1.3J 24.8.1 NA 11 980 950 895 8,000 781 140
<br /> 7/11/2008 3rd Qtr.(Dup) 1.2J 23.2.1 NA 11 889 820 765 8,880 769 67J
<br /> 10/22/2008 4th Qtr. 4.1 34.7 NA 10 4,360 4,200 <100 2,120 638 5.5
<br /> 11/13/2008 Supplemental 1.6 28.8 NA <5 1,720 1,700 <100 5,690 699J 38.9
<br /> 1/12/2009 1st Qtr. 1.6 61.2 NA 19 2,080 1,960 <100 6,230 696 1.8
<br /> 4/8/2009 2nd Qtr. 2.3 37.4 NA 21 2,460 2,030 513J 4,200 592 3J
<br /> 7/15/2009 3rd Qtr. NA 24.9 NA 20 2,230 2,200 760 4,290 653 1.9
<br /> 7/15/2009 3rd Qtr.(Dup) NA 24.4 NA 20 2,210 2,200 724 4,240 643 1.9
<br /> 10/15/2009 4th Qtr. NA 31.0 NA 22 1,800 1,850 368 3,060 609 1.7
<br /> 2/3/2010 1st Qtr. NA 46.7 NA 23 1,340 1,230 533 4,470 642 1.0
<br /> 4/15/2010 2nd Qtr. NA 29.4 NA 25 1,010 880 407 5,710 608 1.2J
<br /> 4/15/2010 2nd Qtr.(Dup) NA 28.3 NA 25 1,000 890 390 5,580 637 1.11
<br /> 7/8/2010 3rd Qtr. NA 83.8 NA 25 91 <10 640 7,360 780 1.0
<br /> 10/14/2010 4th Qtr. NA 107 NA 20 91 <10 1,070 8,980 839 1.9
<br /> 12/8/2010 4th Qtr. NA 121 NA 20 91 <10 1,120 8,580 858 1.1
<br /> 12/8/2010 4th Qtr.(Dup) NA 121 NA 20 10 <10 1,070 8,980 854 1.2
<br /> 1/21/2011 1st Qtr. NA 68.0 NA 20 10 <0.2 708 9,230 886 <1.0
<br /> 4/13/2011 2nd Qtr. NA 114 NA 21 91 <0.2 663 9,850 847 0.7J
<br /> 4/13/2011 2nd Qtr.(Dup) NA 116 NA 20 4J <0.2 659 10,000 839 0.7J
<br /> 7/20/2011 3rd Qtr. NA 116 NA 16 14 <10 666J 9,110 804 <1.0
<br /> 10/12/2011 4th Qtr. NA 87.8 NA 17 3J <0.5 946 8,120 806 0.91
<br /> 1/25/2012 1st Qtr. NA 82.8 NA 16 3J <0.5 1,010 8,880 827 1.5
<br /> 4/25/2012 2nd Qtr. NA 79.7 NA 19 6J <0.5 639 9,510 827 1.8
<br /> 7/24/2012 3rd Qtr NA 86.9 NA 16 12 <0.5 616 9,010 888 1.2
<br /> 7/24/2012 3rd Qtr(Dup) NA 84.5 NA 15 91 <0.5 611 8,690 895 1.1
<br /> 10/23/2012 4th Qtr NA 65.1 NA 12 262 254 481 6,730 880 0.81
<br /> 1/29/2013 1st Qtr. NA 99.8 NA 20 31 <0.5 1,370 8,010 912 1.51
<br /> 1/29/2013 1st Qtr.(Dup) NA 101.0 NA 19 31 <0.5 1,370 8,040 915 1.4
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