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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 12 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 /> MW-2 Intermediate 2/4/2008 Baseline 6.4 38.0 NA 6 39 30 123 <10 345 <1.0
<br /> 4/2/2008 2nd Qtr. 7.4 45.9 NA 5 42 40 117 <10 380 <1.0
<br /> 7/11/2008 3rd Qtr. 8.5 53.1 NA 5 37 30 343 <10 386 <1.0
<br /> 10/22/2008 4th Qtr. 2.6 49.6 NA <5 <10 <10 <100 20 298J <1.0
<br /> 1/8/2009 1st Qtr. 6.5 53.8 NA 6 47 40 <100 <10 373 <1.0
<br /> 4/7/2009 2nd Qtr. 5.6 51.4 NA <5 16 20 198 10 415 <1.0
<br /> 7/15/2009 3rd Qtr. NA 47.1 NA 6 35 40 316 <10 371 1.2
<br /> 10/15/2009 4th Qtr. NA 38.3 NA 2 4 <10 461 30 265 2.2
<br /> 2/2/2010 1 st Qtr. NA 26.7 NA 2 4 <10 161 10 217 0.6
<br /> 2/2/2010 1 st Qtr.(Dup) NA 27.3 NA 2 4 <10 134 10 207 0.7
<br /> 4/14/2010 2nd Qtr. NA 40.8 NA 5 35 40 186 <10 353 0.5U
<br /> 7/8/2010 3rd Qtr. NA 42.6 NA 2J 17 <10 414 30 262 0.6J
<br /> 10/13/2010 4th Qtr. NA 210 NA 6 30 30 110 <10 349 0.7J
<br /> 1/21/2011 1st Qtr. NA 35.4 NA 6 25 25.3 143 <10 346 <1.0
<br /> 4/14/2011 2nd Qtr. NA 68.9 NA 6 17 15.1 590 <10 295 0.081
<br /> 7/20/2011 3rd Qtr. NA 27.3 NA 5 16 10 193 <10 307 1.11
<br /> 7/20/2011 3rd Qtr.(Dup) NA 26.9 NA 5 16 10 196 <10 306 1.01
<br /> 10/13/2011 4th Qtr. NA 33.7 NA 5 19 19.4 137 <10 396 0.11
<br /> 10/13/2011 4th Qtr.(Dup) NA 32.9 NA 5 19 19.5 134 <10 348 0.11
<br /> 1/25/2012 1st Qtr. NA 34.2 NA 8 20 19.8 83 <10 316 0.8J
<br /> 4/30/2012 2nd Qtr. NA 29.6 NA 6 16 15.9 91 <10 310 1.1
<br /> 7/24/2012 3rd Qtr NA 35.8 NA 6 20 18.0 150 <10 330 0.51
<br /> 10/24/2012 4th Qtr NA 36.3 NA 6 20 19.0 192 <10 373 0.6J
<br /> 1/29/2013 1st Qtr. NA 40.1 NA 6 22 21.2 183 <10 354 0.51
<br /> MW-213(I-7) Intermediate 1/10/2008 Baseline 7.022J 39.8J NA 5 4,600 4,600 228 <10 476 <1.0
<br /> 4/1/2008 2nd Qtr. 9.3 70.8 NA 5 7,220 7,200 297 <10 683 <1.0
<br /> 5/20/2008 Supplemental 6.0 41.6 61.7 6 3,960 4,140 245 30 493J 16.0
<br /> 7/11/2008 3rd Qtr. 6.7 41.5 NA 6 3,960 3,900 528 30 479 <1.0
<br /> 10/22/2008 4th Qtr. 6.0 40.8 NA 7 3,860 3,640 <100 30 461J 1.7J
<br /> 10/22/2008 4th Qtr.(Dup) 6.2 40.6 NA 7 3,830 3,700 <100 30 469J 1.4J
<br /> 1/12/2009 1st Qtr. 6.2 38.9 NA 7 4,030 4,020 <100 30 458 <1.0
<br /> 4/8/2009 2nd Qtr. 5.7 40.2 NA 7 3,840 3,190 322 20 433 11
<br /> 7/15/2009 3rd Qtr. NA 34.9 NA 6 3,430 3,400 495 30 454 1.0
<br /> 10/15/2009 4th Qtr. NA 34.9 NA 7 3,200 3,410 293 30 470 0.8
<br /> 2/3/2010 1 st Qtr. NA 37.5 NA 5 3,480 2,960 442 30 492 0.4
<br /> 4/15/2010 2nd Qtr. NA 36.1 NA 6 3,040 2,720 452 60 441 0AU
<br /> 7/8/2010 3rd Qtr. NA 39.9 NA 6 2,900 2,740 392 70 469 0.3J
<br /> 10/14/2010 4th Qtr. NA 50.0 NA 5 2,590 1,970 627 1,250 576 24.0
<br /> 1/25/2011 1st Qtr. NA 37.1 NA 4J 5J <0.2 320 3,940 598 6.8
<br /> 4/13/2011 2nd Qtr. NA 39.1 NA 3J 6J <0.2 309 3,000 495 0.91
<br /> 7/20/2011 3rd Qtr. NA 50.0 NA 3J 125 110 345 2,550 555 3.7J
<br /> 8/22/2011 Supplemental NA NA NA NA 1,390 1,320 134 2,200 NA 2.6
<br /> 10/17/2011 4th Qtr. NA 44.2 NA 5 1,290 1,220 338 2,400 606 5.1
<br /> 1/26/2012 1st Qtr. NA 74.2 NA 20 <10 <0.5 1,610 3,600 737 3.7
<br /> 4/24/2012 2nd Qtr. NA 63.6 NA 6 5,410 5,120 253 1,060 577 5.4
<br /> 4/24/2012 2nd Qtr.(Dup) NA 63.6 NA 5 5,170 5,130 238 970 574 5.1
<br /> 7/25/2012 3rd Qtr. NA 136.0 NA 5 670 561 380 1,610 747 1.1
<br /> 10/25/2012 4th Qtr NA 49.5 NA 6 2,880 2,710 356 510 609 1.9
<br /> 1/30/2013 1st Qtr. NA 53.2 NA 5 2,460 2,450 365 510 527 0.91
<br /> 4/16/2013 2nd Qtr. NA 55.5 NA <5 2,600 2,560 234 700 519 1.3
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