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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 8 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 /> 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 24.8J NA 11 980 950 895 8,000 781 140
<br /> 7/11/2008 3rd Qtr.(Dup) 1.2J 23.2J 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 0.8J
<br /> TW-15 100-Ft.Sand 3/19/2008 Baseline/2nd Qtr 14.3 33.3 NA <5 76 70J 318 20 634 <1
<br /> 3/19/2008 Baseline/2nd Qtr(Dup) 14.3 35.2 NA <5 84 40 379 20 617 <1
<br /> 7/11/2008 3rd Qtr. 17.9 35.8 NA <5 63 <10 809 <10 696 <1
<br /> 10/22/2008 4th Qtr. 16.0 34.2 NA 5 94 100 <100 <10 664J 1.4J
<br /> 1/12/2009 1st Qtr. 11.8 26.2 NA 6 104J 80 <100 150 540 4.1
<br /> 4/8/2009 2nd Qtr. 3.1 21.4 NA <5 10 <10 175 170 292 9.1
<br /> 4/8/2009 2nd Qtr.(Dup.) 2.5 21.5 NA <5 <10 <10 179 150 291 8.4
<br /> 7/14/2009 3rd Qtr. NA 30.0 NA <5 29 30 676 280 627 2.7
<br /> 10/14/2009 4th Qtr. NA 21.0 NA 4 5 <10 570 100 235 22.0
<br /> 2/2/2010 1 st Qtr. NA 4.0 NA 2 4 <10 120 180 148 5.5
<br /> 4/14/2010 2nd Qtr. NA 11.4 NA 2 11 <10 105 1,130 190 5.5
<br /> 7/8/2010 3rd Qtr. NA 34.5 NA 2J 17 <10 628 2,790 580 1.8
<br /> 10/13/2010 4th Qtr. NA 49.7 NA 3J 41 20 732 1,780 671 1.3
<br /> 10/13/2010 4th Qtr.(Dup) NA 50.3 NA 3J 33 20 750 1,800 676 1.0
<br /> 12/8/2010 4th Qtr. NA 5.6 NA 2J 6J <10 698 30 177 4.9
<br /> 1/21/2011 1st Qtr. NA 1.51 NA 2J <10 0.38J 14J 30 182 1.5
<br /> 4/14/2011 2nd Qtr. NA 26.6 NA 1J 4J <0.2 217 2,170 369 2.1
<br /> 7/20/2011 3rd Qtr. NA 41.2 NA <5 4J <10 579 6,610 634 4.1J
<br /> 10/13/2011 4th Qtr. NA 45.8 NA 2J 16 15.8 468 3,350 685 0.91
<br /> 5/2/2012 2nd Qtr. NA 41.5 NA 2J 24 20.6 421 2,750 759 2.6
<br /> 7/18/2012 3rd Qtr NA 42.1 NA 3J 43 39.2 334 2,130 651 1.1
<br /> 10/24/2012 4th Qtr NA 41.0 NA 4J 37 36.8 480 1,600 634 1.2
<br /> TW-16 100-Ft.Sand 4/2/2008 Baseline/2nd Qtr 11.0 47.0 NA <5 1,080 1,000 336 <10 716 <1.0
<br /> 7/11/2008 3rd Qtr. 0AJ 79.1 NA 7 19 <10 7,450 70 2,390 1,000
<br /> 10/22/2008 4th Qtr. <1 33.4 NA <5 45 <10 296 260 1,450J 1,000
<br /> 1/9/2009 1st Qtr. <1 17.2 NA <5 69 <10 <100 1,020 1,170 880
<br /> 4/8/2009 2nd Qtr. 5.5 35.1 NA <5 <10 <10 389 230 535 1.6 J
<br /> 7/14/2009 3rd Qtr. NA 178 NA <5 <10 <10 665 1,630 803 14.0
<br /> 10/12/2009 4th Qtr. NA 165 NA 2 4 <10 593 3,090 767 16.0
<br /> 2/2/2010 1 st Qtr. NA 130 NA <5 13 <10 670 3,580 714 0.6
<br /> 4/14/2010 2nd Qtr. NA 266 NA <5 18 <10 472 3,100 893 3.1
<br /> 7/8/2010 3rd Qtr. NA 190 NA 2J 10 <10 633 2,010 732 3.8
<br /> 10/13/2010 4th Qtr. NA 319 NA <5 5J <10 908 1,240 966 0.7J
<br /> 12/8/2010 4th Qtr. NA 352 NA <5 5J <10 1,110 1,210 1,120 0.91
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