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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 14 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 (mg/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 /> Injection Area Wells Continued
<br /> MW-447S Intermediate 8/9/2010 Baseline NA 53.1 NA <5 7,090 7,080 313 NA 543 1.0
<br /> 8/16/2010 Baseline NA 33.6 NA 6 3,540 3,330 270 NA 387 1.5
<br /> 8/23/2010 Baseline NA 48.7 NA 4J 7,990 7,780 397 NA 578 1.0
<br /> 10/14/2010 4th Qtr. NA 57.2 NA 6 7,700 7,670 370 10 564 1.3
<br /> 12/6/2010 4th Qtr. NA 44.0 NA 5 6,990 6,510 274 <10 542 0.6J
<br /> 1/25/2011 1st Qtr. NA 40.7 NA 4J 6,650 5,740 234 70 670 1.1
<br /> 4/18/2011 2nd Qtr. NA 42.4 NA 6 6,020 5,980 120 10 733 0AJ
<br /> 5/23/2011 Supplemental NA NA NA NA 5,910 5,880 243 <10 NA <1.0
<br /> 6/20/2011 Supplemental NA NA NA NA 5,130 5,200 247 <10 NA <1.0
<br /> 7/21/2011 3rd Qtr. NA 41.2 NA 5 4,950 3,350 413 <10 520 <1.0
<br /> 8/22/2011 Supplemental NA NA NA NA 815 753 71 6J NA 1.1J
<br /> 8/22/2011 Supplemental(Dup) NA NA NA NA 868 776 83 7J NA 1.3
<br /> 10/17/2011 4th Qtr. NA 49.8 NA 4J 2,630 2,630 350 <10 627 0.6J
<br /> 1/26/2012 1st Qtr. NA 65.4 NA 5 2,240 2,200 359 20 621 0.91
<br /> 5/2/2012 2nd Qtr. NA 88.6 NA 6 2,160 1,990 388 10 813 0.5J
<br /> 7/18/2012 3rd Qtr NA 99.7 NA 5 2,070 1,950 348 10 694 0.6J
<br /> 10/25/2012 4th Qtr NA 122.0 NA 6 716 700 435 30 670 1.1
<br /> 10/25/2012 4th Qtr(Dup) NA 121.0 NA 6 711 698 438 30 662 1.4
<br /> MW-447D Intermediate 8/9/2010 Baseline NA 40.2 NA 6 2,530 2,360 282 NA 393 2.5
<br /> 8/16/2010 Baseline NA 45.3 NA 6 2,540 2,320 296 NA 442 3.3
<br /> 8/23/2010 Baseline NA 39.7 NA 6 2,500 2,440 275 NA 425 3.0
<br /> 10/14/2010 4th Qtr. NA 32.6 NA 7 3,350 3,120 154 20 425 2.4
<br /> 12/6/2010 4th Qtr. NA 32.4 NA 6 2,960 2,730 223 20 436 1.8
<br /> 1/25/2011 1st Qtr. NA 33.9 NA 6 3,460 3,110 180 10 530 1.1
<br /> 1/25/2011 1st Qtr.(Dup) NA 31.9 NA 6 3,610 3,050 195 10 505 1.1
<br /> 4/18/2011 2nd Qtr. NA 29.7 NA 6 1,620 1,600 53 <10 400 0.3J
<br /> 5/23/2011 Supplemental NA NA NA NA 2,130 1,920 158 <10 NA <1.0
<br /> 6/20/2011 Supplemental NA NA NA NA 2,600 2,290 157 <10 NA 1.0J
<br /> 7/21/2011 3rd Qtr. NA 31.0 NA 6 2,370 1,870 300 <10 403 <1.0
<br /> 8/22/2011 Supplemental NA NA NA NA 2,040 1,950 99 <10 NA 1.0J
<br /> 10/17/2011 4th Qtr. NA 31.9 NA 6.0 2,290 2,280 206 <10 461.0 0.7J
<br /> 1/26/2012 1st Qtr. NA 32.1 NA 6.0 2,650 2,580 183 <10 425 0.7J
<br /> 1/26/2012 1st Qtr.(Dup) NA 32.6 NA 6.0 2,620 2,590 207 <10 415 0.81
<br /> 5/2/2012 2nd Qtr. NA 32.0 NA 7.0 2,290 2,150 228 <10 497 0.6J
<br /> 7/18/2012 3rd Qtr NA 32.2 NA 6.0 2,350 2,250 251 <10 519 0.51
<br /> 10/25/2012 4th Qtr NA 35.7 NA 7.0 2,300 2,250 305 <10 497 6.2
<br /> MW-448S Intermediate 8/10/2010 Baseline NA 38.3 NA <5 2,300 2,220 380 20 957 1.0
<br /> 8/16/2010 Baseline NA 35.5 NA <5 2,060 1,820 357 NA 537 1.0
<br /> 8/23/2010 Baseline NA 32.7 NA 4J 1,890 1,870 388 NA 566 0.8J
<br /> 10/14/2010 4th Qtr. NA 36.4 NA 6 2,120 2,110 359 20 550 1.1
<br /> 12/6/2010 4th Qtr. NA 35.6 NA 5 2,170 2,010 374 7J 655 0.6J
<br /> 1/25/2011 1st Qtr. NA 34.6 NA 4J 2,280 2,030 314 7J 587 <1.0
<br /> 4/14/2011 2nd Qtr. NA 23.3 NA 6 1,370 1,210 56 40 373 4.0
<br /> 5/23/2011 Supplemental NA NA NA NA 1,350 1,150 183 <10 NA 1.1
<br /> 6/20/2011 Supplemental NA NA NA NA 1,570 1,570 202 20 NA 3.OJ
<br /> 7/21/2011 3rd Qtr. NA 31.1 NA 5.0 1,820 1,530 417 20 486 2.0
<br /> 8/22/2011 Supplemental NA NA NA NA 2,240 2,150 170 10 NA 1.7J
<br /> 10/17/2011 4th Qtr. NA 34.7 NA 4J 2,230 2,230 326 91 583 0.8J
<br /> 1/26/2012 1st Qtr. NA 35.6 NA 4J 2,400 2,370 260 7J 564 1.2
<br /> 5/2/2012 2nd Qtr. NA 37.5 NA 5.0 2,570 2,540 335 <10 958 0.7J
<br /> 7/18/2012 3rd Qtr NA 38.5 NA 5.0 2,620 2,550 376 5J 864 0.5J
<br /> 10/25/2012 4th Qtr NA 37.6 NA 5.0 2,480 2,470 384 <10 669 0.91
<br /> MW-448D Intermediate 8/16/2010 Baseline NA 48.0 NA 5 4,110 4,040 405 NA 611 2.0
<br /> 8/23/2010 Baseline NA 46.5 NA 5 4,980 4,910 476 NA 649 1.8
<br /> 10/14/2010 4th Qtr. NA 53.7 NA 7 12,800 12,500 380 20 632 1.4
<br /> 12/6/2010 4th Qtr. NA 45.5 NA 6 10,800 10,300 272 10 597 0.91
<br /> 1/25/2011 1st Qtr. NA 40.1 NA 6 9,790 8,410 348 10 514 <1.0
<br /> 4/18/2011 2nd Qtr. NA 38.2 NA 6 7,870 7,500 104 <10 476 0.3J
<br /> 5/23/2011 Supplemental NA NA NA NA 9,240 9,040 260 <10 NA <1.0
<br /> 5/23/2011 Supplemental(Dup) NA NA NA NA 9,350 9,040 249 <10 NA <1.0
<br /> 6/20/2011 Supplemental NA NA NA NA 9,770 9,000 229 6J NA <1.0
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