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TABLE I
<br /> LABORATORY ANALYTICAL RESULTS ;
<br /> FORMER MARLEY COOLING TONER SITE
<br /> STOCKTON,CALIFORNIA
<br /> Page 18 of 24
<br /> Screened
<br /> Laboratory Analyses
<br /> HexavalentWafer-bearing Nitrate as N Calcium Chromium Chromium Manganese
<br /> Well Zone Sample Date Event/Purpose mg1L* Sulfate mg/L) (rIL Arsenic gIL 1L) (pg/L)** Iron pg1L 1L TDS mg/L) TOC mg1L
<br /> Water Quality 0b ective 10 250 10 50 50 300 50 450
<br /> in action Area Welts Continued
<br /> MW-4493 Intermediate 712512012 3rd Qtr NA 60.7 NA 5 2,680 2,620 390 20 755 O.6J
<br /> 10/25/2012 4th Qtr NA 59.5 NA 5 1,750 1,720 584 7J 819 1.1
<br /> 1/30/2013 1st Qtr, NA 64.3 NA 5 1,770 1,740 547 10 780 0,6J
<br /> 4!1612013 2nd Qtr. NA -74.3 NA <5 1,940 1,930 366 10 762 1.2
<br /> MW-44917 Intermediate 7!2512012 37
<br /> d Qtr NA 39.3 NA 8 5,710 5,700 200 40 411 0.41 .
<br /> 10/29/2012 4th Qtr NA 35.9 NA 7 6,320 6,610 373 <10 449 0.7J
<br /> 10/29/2012 4th Qtr(©up) NA 36.9 NA 7 6,600 6,040 364 <10 470 0.7J
<br /> 1/30/2013 1st Qtr. NA 37.9 NA 8 7,500 7,490 241 <10 403 0.81
<br /> 4112/2013 2nd Qtr. NA 44.3 NA 6 8,600 8,550 190 <10 462 <1.0
<br /> MW-4505 Intermediate 7/19/2012 3rd Qtr NA 36.0 NA 6 4,040 3,870 170 30 453 0,4J
<br /> 7!1912012 3rd Qtr(laup) NA 35.9 NA 6 3,980 3,880 188 30 441 OAJ
<br /> 10/25/2012 4th Qtr NA 35.5 NA 6 4,400 4,360 294 <10 569 0.61
<br /> 1136/2013 1st Qtr. NA 38.0 NA 7 4,800 4,700 262 <10 479 OAJ
<br /> 4/16/2013 2nd Qtr. NA 44,6 NA 5 5,200 5,160 209 <10 497 <1.0
<br /> MW-45017 Intermediate 7/19/2012 3rd Qtr NA 19.8 NA 9 100 87.8 97 10 281 0.4J
<br /> 10/24/2012 4th Qtr NA 18.1 NA 11 85 85.0 138 <10 257 0.61
<br /> 1/2912013 1st Qtr. NA 17.3 NA 9 100 16.6 140 <10 300 0.61
<br /> 4/12/2013 2nd Qtr. NA 22.0 NA 9 164 144.0 162 00 293 0,7J
<br /> Background/Compliance Wells
<br /> 1/9/2008 Back round 8.6 42.0 NA <5 < 10 287 <10 577 <1.0
<br /> MW-7 Shallow g 10 <
<br /> 4/1/2008 2nd Qir.ICompTance 8.6 44.6 NA <513 <10 273 <1O 587 <1.0
<br /> 7/10/2008 3rd Qtr./Compliance 11.8 38.6 'NA <5 10 <10 1,000 10 612 <1.0
<br /> 1012212008 4th Qtr./Compliance 1.9 66.7 ;NA <5 18 <10 <100 10 6861 <i.0 r
<br /> 1/9/2009 1st Qtr. 7.5 26.0 jNA <5 53 <10 <100 10 681 <1.0
<br /> 4/8/2009 2nd Qtr. 6.1 27 J NA <5 14 20 479 <10 519 1.0 J
<br /> 7/15/2009 3rd Qtr, NA 34.4 NA <6 <10 <10 663 20 587 1.4
<br /> 10/12/2009 4th Qtr. NA 41.7 NA 3 14 <10 496 10 616 1.7
<br /> 212!2010 1st Qtr. NA 44.1 NA 2 14 <10 522 10 608 0.5 s
<br /> 4/13/2010 2nd Qtr. NA 45.5 NA 2 7 <10 270 10 $61 0.71-1
<br /> 7/8/2010 31d Qtr. NA 48,1 NA 3J 13 <10 466 20 551 0.7J
<br /> 10/13/2010 4th Qtr. NA 41.9 NA 4J 13 <10 486 91 603 0.7J
<br /> 1/21/2011 1st Qtr. NA 43.0 NA 4J 91 3.03 436 10 642 <1.0
<br /> 4/1412011 2nd Qtr. NA 42.7 NA 31 13 3,77 240 <10 648 OAJ
<br /> 7/20/2011 3rd Qtr. NA 44.4 NA 31 8J <10 556 <10 647 16.0
<br /> 10/13/2011 41h Qtr. NA 42.7 ,NA 2J <10 0.88 339 20 696 0.3J .
<br /> 1/24/2012 1st Qtr. NA 41.5 NA 31 61 5,24 288 <10 595 0.91
<br /> 4/25/2012 2nd Qtr. NA 43.0 NA 4J BJ 5.35 199 <10 620 1.0
<br /> 7/24/2012 3rd Qtr NA 41.2 NA W 9J 4.96 293 10 582 0.71
<br /> 10/23/2012 4th Qtr NA NA NA NA 61 NA NA NA NA NA
<br /> 1/2512013 1st Qtr. NA NA NA NA 91 NA NA NA NA NA
<br /> MW-201 Shallow
<br /> 2/4/2008 Background 14.3 49.4 NA <5 17 <10 390 <10 786 <1.0 z
<br /> 4/2/2008 2nd Qtr./Compliance 12.5 47.0 NA <5 28 <10 307 <10 807 <1.0
<br /> 512012008 Supplemental 11.4 51,1 NA <5 <10 <10 493J <10 877J 3.8
<br /> 5/20/2008 1 2nd Qtr./Supplemental(Dup) 11.1 49.9 NA <5 <10 <10 503 <10 850J <1 A
<br /> 7/11/2008 3rd Ur./Compliance 12.4 51.5 NA <5 13 <10 1,220 <10 956 <1.0
<br /> 7/11/2008 3rd Qtr. 11.4 50.5 NA <5 13 <10 1,340 <10 893 <1.0
<br /> 1OI2212008 4th Qtr./Compliance 6.3 44.7 NA <5 22 <10 <100 <10 832J 1.01
<br /> 1/9/2009 1st Qtr. 10.8 58.1 NA <5 63 <10 <100 <10 841 1.51
<br /> 4/8/2009 2nd Qtr. 12.0 53,2 NA <5 19 10 637 <10 879 1.3 J
<br /> 7/15/2009 3rd Qtr. NA 50.9 NA <5 21 <10 1,000 <10 851 1.2
<br /> 10/14/2009 4th Qtr. NA 52.0 NA i 7 <10 688 20 907 2.4
<br /> 2/2/2010 1st Qtr. NA 48.5 NA 2 31 <10 814 <10 899 0.6 9
<br /> 4/14/2010 2nd Qtr. NA 49.4 NA 2 11 <10 515 10 956 0.611
<br /> 7/8/2010 3rd Qtr. NA 52.9 NA 3J 32 10 849 <10 871 1.6
<br /> 10/13/2010 41h Qtr. NA 48.7 NA 21 15 <10 926 W-886 1,3 ,
<br /> 1121/2011 1st Qtr. NA 52.2 NA 4J 21 8.98 736 <10 920 <1.0
<br /> 4/14/2011 2nd Qtr. NA 54.1 NA 3J 23 10.0 326 <10 944 0.7J
<br /> 712112011 3rd Qtr. NA 54,1 NA 2J 10 <10 656 <10 1,430 <1.6
<br /> 10113/2011 4th Qtr. NA 53.9 NA 2J 13 9.74 528 <10 940 0.5J
<br /> 1/25/2012 1st Qtr. NA 44.6 NA 5 17 9.40 127 <10 975 1.2
<br /> 4/30/2012 2nd Qtr. NA 48.8 NA 31 14 10.70 357 <10 835 1.3 i
<br /> 7/24/2012 3rd Qtr NA 46.4 NA 3J 18 8,48 445 <10 906 0.81 �!
<br /> 10124/2012 4th Qtr NA NA NA NA 14 NA NA NA NA NA
<br /> 1/29/2013 1st Qtr. NA NA NA NA 31 NA NA NA NA NA
<br /> 4/10/2013 2nd Qtr. NR NA NA 33 Pending NA NA NA NA NA
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