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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 /> 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 1 st 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 /> 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 /> TW-14 Shallow 3/19/2008 Baseline/2nd Qtr 9.1 105 NA <5 16 10 370J 30 824 1.3
<br /> 7/10/2008 3rd Qtr. <1 29.4 NA 81 27 <10 2,030 670 1,160 1,400
<br /> 10/22/2008 4th Qtr. <1 87.5 NA 22 12 <10 <100 250 9111 <100
<br /> 1/9/2009 1st Qtr. <1 120 NA <5 86 <10 <100 1,000 1,100 4.0
<br /> 4/8/2009 2nd Qtr. 1.0 156 NA 25 <10 <10 612 1,370 728 1.6 J
<br /> 7/14/2009 3rd Qtr. NA 160 NA 7 <10 <10 808 3,260 101 2.3
<br /> 10/12/2009 4th Qtr. NA 109 NA 18 10 <10 730 3,970 815 3.0
<br /> 2/2/2010 1st Qtr. NA 189 NA 1 25 <10 1,490 6,610 1,070 1.2
<br /> 4/14/2010 2nd Qtr. NA 391 NA <5 37 <10 1,510 8,110 1,290 1.5
<br /> 7/8/2010 3rd Qtr. NA 287 NA 6 15 <10 1,320 6,920 1,030 1.5
<br /> 10/13/2010 4th Qtr. NA 243 NA 5 11 <10 967 5,400 938 1.2
<br /> 1/21/2011 1st Qtr. NA 346 NA 8 11 <0.2 2,850 5,670 1,220 1.01
<br /> 4/14/2011 2nd Qtr. NA 338 NA 9 14 <0.2 750 7,020 1,190 0.91
<br /> 7/20/2011 3rd Qtr. NA 327 NA 14 91 <10 1,980 8,020 1,200 5.5
<br /> 10/13/2011 4th Qtr. NA 279 NA 6 <10 <0.5 544 5,360 1,140 2.1
<br /> (Page 6 of 19)
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