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TABLE I <br /> LABORATORY ANALYTICAL RESULTS <br /> FORMER MARLEY COOLING TOWER SITE <br /> STOCKTON,CALIFORNIA <br /> Page 13 of 24 <br /> Laboratory Analyses <br /> Screened Hexavalent <br /> Water-bearing Nitrate as N Calcium Chromium Chromium Manganese <br /> Well Zone Sample Date Event/Purpose (mg/Lr Sulfate mg1L) (mg/L) Arsenic /L) (Vg1L) (Vg/L.. Iron g/L) (p91L TD5 mg/L) TOC mg/L <br /> Water QualitV Objective 10 250 10 50 50 300 50 450 <br /> Injection Area Wells Continued <br /> 7!1012008 3rd Qtr. 5.6 26.3 NA 6 680 680 350 <10 370 <1.0 <br /> MW-214(1-8) Intermediate 10/22/2008 4th Qtr. 5.5 30.3 NA 6 665 700 <100 <10 370J 1.2J <br /> 1!1212009 1st Qtr. 5.3 26.4 NA 7 758 720 <1o0 <10 367 <1.0 <br /> 4/8/2009 2nd Qtr. 5.5 26.4 NA 6 734 350 248 <10 312 10.0 <br /> 7/15/2009 3rd Qtr. NA 25.8 NA 6 751 750 328 <10 367 1.0 <br /> 10/15/2009 4th Qtr, NA 25.2 NA 6 700 770 206 <10 378 1.0 <br /> 10/15/2009 4th Qtr.(Dup) NA 24.9 NA 6 720 750 227 <10 378 1.1 <br /> 213/2010 1st Qtr. NA 28.0 NA 5 718 690 299 <10 422 0.5 <br /> 4/15/2010 2nd Qtr. NA 26.0 NA 6 716 670 212 <10 373 0.4U <br /> 7/8/2010 3rd Qtr. NA 27.4 NA 5 662 610 272 <10 363 0. <br /> 1011412010 4th Qtr. NA 10.3 NA 31 11 <10 634 4,970 423 288 <br /> 10/14/2010 4th Qtr.(Dup) NA 10.8 NA 4J 91 <10 426 4,600 360 29 <br /> 1/21/2011 1st Qtr. NA 38.9 NA 5 31 <0.2 204 2,450 478 1.OJ <br /> 4/1312011 2nd Qtr. NA 40.1 NA 3J 3J <0.2 230 2,880 421 4.1 <br /> 7/1912011 3rd Qtr. NA 70.9 NA iJ <10 <to 167 2,490 383 <1.0 <br /> 10/1212011 4th Qtr. NA 69.4 NA 41 <10 <0,5 213 1,780 371 0.81 <br /> 1/24/2012 1st Qtr. NA 53.8 NA 4J 4J 40.5 155 1,360 408 1.0 <br /> 4/24/2012 2nd Qtr. NA 55.7 NA 31 <10 <0.5 177 1,260 418 1.3 <br /> 7/23/2012 3rd Qtr NA 72.0 NA 5 4J <0.5 207 1,790 535 0.51 <br /> 7/23/2012 3r€1 Qtr(Dup) NA 71.2 NA 5 31 <0.5 200 1,690 490 0.6.1 <br /> 10/23/20124th Qtr NA 69.0 NA 6 <10 <0.5 236 1,760 518 1.9 <br /> 1/24/2013 1st Qtr. NA 69.4 NA 6 <10 <0.5 639 2,020 508 0.51 <br /> MW-320 Intermediate 5/20/2008 Supplemental 4.3 26.7 NA 6 33 40 144 <10 371J 1.2 <br /> 4114120112nd Qtr. NA 13.1 NA i0 7J 3.96 65 <10 230 0.1J <br /> 7120/2011 3rd Qtr, NA 12.2 NA 8 51 <10 129 <10 220 <1.0 <br /> 10/12/2011 4th Qtr. NA 12.9 NA 8 3J 2.60 75 5J 287 2.9 <br /> 10/12/2011 4th Qtr.(Dup) NA 12,9 NA 7 31 2.59 76 61 248 2.9 <br /> 1/25/2012 1st Qtr. NA 13.2 NA 3J 5J 4.08 376 2,880 203 0.91 <br /> 4124!2012 2nd Qtr. NA 13.3 NA 10 11 10.90 92 <10 233 0.7J <br /> 4/24/2012 2nd Qtr.(Dup) NA 13.4 NA 10 11 10.90 88 <10 ' 240 .61 <br /> 7/23/2012 3rd Qtr NA 8.1 NA 6 <10 <0.5 239 260 190 4.4 <br /> 10122!2012 4th Qtr NA 15.0 NA 7 <10 <0.5 120 90 229 3.B <br /> 1124!2013 1st Qtr. NA 21.3 NA 0 41 41.00 140 10 379 0.4J <br /> 4/11/2013 2nd Qtr, NA 21.3 NA 6 49 49.10 142 <10 373 0.51 <br /> 4/2/2008 Baselino/2nd Qtr 9.7 23.7 NA 8 380 380 260 <10 453 <1.0 <br /> MW-321(I-9) Intermediate 5/20/2008 Supplemental 9.0 28.5 54.6 8 372J 380J 240J <10 470J 5.2 <br /> 512 0_12008 Supplemental(Dup) 5.0 26.3 NA 7 482 486 188 <10 302J <1.0 <br /> 7!1112008 3rd Qtr. 11.0 28.7J NA B 730 700 535 <10 470 <1.0 <br /> 7/11/2008 3rd Qtr.(Dup) 9.0 31.1 NA 8 726 700 556 <10 478 <1.0 <br /> 10122!2008 4th Qtr. 8.6 30.2 NA 8 860 900 <100 <10 450 1.2 <br /> 1 111 3120 0B Supplemental 8.7 29.3 NA 8 Big 800 <100 <10 453J 41J <br /> 1/12/2009 1st Qtr. 9.7 27.2 NA 8 789 740 <300 <30 467 <1.0 <br /> 4/8/2009 2nd Qtr. 8.6 26.5 NA 9 604 580 354 <10 436 <1.0 UJ <br /> 7/1512009 3rd Qtr. NA 26.0 NA 8 492 490 518 <10 458 <1.0 <br /> 10/15/2009 4th Qtr. NA 23.7 NA 9 340 390 298 <10 464 1.2 <br /> 2/3/2010 1st Qtr. NA 24.1 NA 7 418 370 440 <i0 460 0.4 <br /> 4/15/2010 2nd Qtr. NA 23.6 NA 8 430 360 343 <10 441 0.4U <br /> 7/8/2010 3rd Qtr. NA 25.6 NA 8 598 520 368 <10 455 0.3J <br /> 10/14/2010 4th Qtr. NA 26.2 NA 8 760 620 457 <10 498. 0.81 <br /> 12/6/2010 4th Qtr. NA 23.8 NA 10 474 441 214 40 495 7.2 <br /> 1/25/2011 1st Qtr. NA 25.4 NA 6 536 517 224 130 520 4.8 <br /> 4/18/2011 2nd Qtr. NA 25.3 NA 8 406 353 112 450 471 11 <br /> 5/2312011 Supplemental NA NA NA NA 140 140 314 570 NA 6.4 <br /> 612012011 Supplemental NA NA NA NA 142 150 155 480 NA . <br /> 6 <br /> 7/21/2011 3rd Qtr. NA 23.9 NA 8 149 150 295 790 448 144. <br /> 7/2112011 3rd Qtr,(Dup) NA 23.2 NA 8 154 150 294 790 430 13.0 <br /> 8/22/2011 Supplemental NA NA NA NA 136 130 125 640 NA 6.6 <br /> 10/1312011 4th Qtr. NA 26.1 NA 6 150 158 239 810 488 5.3 <br /> 1/26/2012 1st Qtr. NA 21.3 NA 7 120 116 182 610 414 5.4 <br /> 4/30/2012 2nd Qtr. NA 23.5 NA 10 43 0.43J 160 920 429 3.9 <br /> 7/19/2012 3rd Qtr i NA 10.5 NA 8 150 149 258 510 ' 646 i.e <br /> 10/25/2012 4th Qtr NA 24.3 NA 9 57 49.5 295 730 476 12.0 <br /> 10/25/2012 4th Qtr(Dup) NA 24.8 NA 9 58 51.6 312 710 469 10.0 <br /> 1/2912013 1st Qtr. NA 213.4 NA 8 <10 <0.5 356 2,190 530 1.9 <br /> 1129/2013 1st Qtr.(Dup) NA 28.5 NA 8 <10 <0.5 305 2,200 543 2.1 <br /> 4!1012013 2nd Qtr. NA 28.7 NA 8 10 7.16 213 1,040 527 0.8J <br /> 4/10/2013 2nd Qtr.(Dup) NA 28.5 NA 8 10 7.15 230 1,050 554 0.7J <br />