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TABLE 5
<br /> LABORATORY ANALYTICAL RESULTS
<br /> 2011 ANNUAL GROUNDWATER MONITORING REPORT
<br /> FORMER MARLEY COOLING TOWER SITE
<br /> STOCKTON,CALIFORNIA
<br /> Laboratory Analyses
<br /> Screened Hexavalent
<br /> Water-bearing Nitrate as N Calcium Chromium Chromium Manganese
<br /> Well Zone Sample Date Event/Purpose (mg/L)* Sulfate (mg/L) (mg/L) Arsenic (pg/L) (pg/L) (pg/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 /> Injection Area Wells Continued
<br /> TW-17 Shallow 4/1/2008 Baseline/2nd Qtr 3.7 51.4 NA 5 15 <10 247 <10 539 <1.0
<br /> 7/10/2008 3rd Qtr. <1 154 NA <5 46 <10 5,200 <10 2,060 1,800
<br /> 10/22/2008 4th Qtr. <1 104 NA <5 83 <10 <100 <10 1,9901 2,800
<br /> 1/9/2009 1st Qtr. <1 78.1 NA 8 204 <10 <100 <10 2,230 5,900
<br /> 4/8/2009 2nd Qtr. 3.0 76.2 NA 166 27 <10 1,650 20 1,150 630
<br /> 7/15/2009 3rd Qtr. NA 38.7 NA 216 16 20 2,280 50 1,260 52
<br /> 10/14/2009 4th Qtr. NA 6.8 NA 257 7 <10 2,200 560 1,890 540
<br /> 2/2/2010 1st Qtr. NA 19.1 NA 64 <10 <10 1,380 220 783 75
<br /> 4/14/2010 2nd Qtr. NA 144 NA 51 <10 <10 637 170 807 130
<br /> 7/8/2010 3rd Qtr. NA 131 NA 382 25 <10 2,240 130 1,290 760
<br /> 10/13/2010 4th Qtr. NA 243 NA 39 16 <10 745J 220 1,340 93
<br /> 10/13/2010 4th Qtr. (Dup) NA 230 NA 39 18 <10 758J 300 1,480 120
<br /> 1/21/2011 1st Qtr. NA 243 NA 23 91 0.2UJ 1,100 350 1,070 <1.0
<br /> 1/21/2011 1st Qtr. (Dup) NA 248 NA 24 8J <0.2 1,140 290 997 <1.0
<br /> 4/14/2011 2nd Qtr. NA 625 NA 16 12 <0.2 588 1,080 1,600 5.3
<br /> 7/21/2011 3rd Qtr. NA 823 NA 5 3J <10 1,930 1,030 1,730 2.0
<br /> 10/13/2011 4th Qtr. NA 835 NA 6 <10 <0.5 1,220 1,520 1,740 1.8
<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 /> 2/11/20110 1 st Qtr. NA 61.6 NA 1 29 <10 667 2,460 758 11.11
<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 /> 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 /> (Page 7 of 19)
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