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TABLE 1 <br /> LABORATORY ANALYTICAL RESULTS <br /> FORMER MARLEY COOLING TOWER SITE <br /> STOCKTON,CALIFORNIA <br /> i <br /> Page 7 of 24 <br /> 4 <br /> k <br /> Laboratory Analyses <br /> Screened Hexavalent <br /> Water-bearing Nitrate as N Calcium Chromium Chromium Manganese <br /> Well Zone Sample pate Event/Purpose (mg/Lr Sulfate mg/L) (mg/L) Arsenic Pq/L) g/L (pg/Ly' Iron pg/L) (gg/L) TD5 mg/L) TOC m2/L <br /> Water Quality Objective 10 250 10 50 50 300 50 450 <br /> Inlection Area Wells Continued <br /> 4/2/2008 2nd Qtr. 14.6 30.4 NA <5 108 100 335 <10 8114 <1.0 <br /> MW-301 Shallow 7/11/2008 3rd Qtr. 20.7 41.2 NA <5 100 90 1,200 <10 876 <1.0 <br /> 10122!2008 4th Qtr. 16.3 36.0 N-A-<5 86 80 <100 <10 861J 1.4 <br /> 1/9/20099 1st Qtr. 17.1 29.8 NA <5 97 50 <100 <10 954 <1.0 <br /> 4/8/2009 2nd Qtr. 19.7 31.7 HA <5 96 90 667 <10 898 1.3 J <br /> 7/15/2009 3rd Qtr. NA 36.1 NA <5 95 106 1,080 <10 816 1.9 <br /> 10/15/2009 4th Qtr. NA 35.6 NA 3 SS 100 735 <10 855 1.3 <br /> 10/1512009 41h Qtr.(Dup) NA 35.7 NA 3 91 120 708 <10 856 1.5 <br /> 2/2/2010 1st Qtr. NA 42.8 NA 2 88 80 918 <10 873 0.6 <br /> 411512010 2nd Qtr. NA 44.7 NA 3 125 120 682 <10 806 0.711 <br /> 7/8/2010 3rd Qtr. NA 47.3 NA 31 130 120 782 <10 832 0.91 <br /> 10/14/2010 4th Qtr. NA 68.6 NA 2J 144 140 1,040 <10 860 1.0 <br /> 4/18/2011 2nd Qtr. NA 56.7 NA 3J 90 89.5 284 <10 872 0.4J <br /> 7/20/2011 3rdQtr. NA 44.2 NA 2J 100 100 663 <10 807 1.1J <br /> 10113!2011 4th Qtr. NA 35.3 NA 2J 135 135.0 563 <10 941 0.51 <br /> 1!2512012 1st Qtr. NA 33.7 NA 2J 195 110 133 81 935 1.6 <br /> 4/30/2012 2nd Qtr. NA 41.1 NA 2J 63 59.6 399 130 989 2.8 <br /> 4l30f2012 2nd Qtr.(Dup) NA 40.5 NA 2J 62 59.0 400 130 966 2.9 <br /> 7/18/2012 3rd Qtr NA 73.3 NA 2J 49 42.7 596 150 1,150 2.3 <br /> 10/2412012 4th Qtr NA 105.0 NA 21 24 23.2 745 110 961 2.2 <br /> 1129!2013 1st Qtr. NA 65.6 NA 2J 10 7.1 638 150 _ 906 1.6 <br /> 4/11/2013 2nd Qtr. NA 42,5 NA 2J 12 9.29 418 130 681 1.6 <br /> 4/1112613 2nd Qtr.(Dup) NA 42.6 NA 2J 12 9.13 432 130 907 1.7 <br /> 4/2/2008 Baseline/2nd Qtr 18.4 34.9 NA <5 94 9D 452 <10 852 <1.0 <br /> MW-303 Shallow 5/20/2008 Supplemental 17.8 44.6 NA <5 88 70 53B <10 848J 2.0 <br /> 7/11/2006 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 1st Qtr. 15.4 39.6 NA <5 89 40 <100 480 838 1.7 <br /> 418/2009 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 W 1,120 5,020 856 23.0 <br /> 7/15/2069 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 1J 18 <10 1,870 3,680 880 2.2 <br /> 1/25/2011 1st Qtr. NA 92.6 NA 43 23 <0.2 1,710 3,630 888 1.31 <br /> 4/14/2011 2nd Qtr, NA 11D NA B 12 <02 2,220 3,650 893 1.3 <br /> 7/21/2011 3rd Qtr. NA 69 NA 7 3J <10 1,570 4,460 896 1.2 <br /> 10/13/2011 41h Qtr. NA 80.1 NA 8 51 <0.5 716 3,570 940 0.9J <br /> 1/25/2012 1st Qtr. NA 32.7 NA 7 3J <0.5 1,250 3,430 826 1.5 <br /> 4/25/2012 2nd Qtr. NA 26.1 NA 9 5J <0.5 885 4,490 ! 785 1.6 <br /> 4/25/2012 2nd Qtr.(Dup) NA 26.5 NA 9 4J <0.5 883 4,620 774 1.6 <br /> 712412012 3rd Qtr NA 29.6 NA 8 51 <0.5 582 3,960 770 1.0 <br /> 10123/2012 4th Qtr NA 32.1 NA 9 31 <0.5 468 3,430 883 2.3 <br /> 10123/2012 4th Qtr(Dup) NA 31.3 NA 9 31 <0.5 480 3, 60 883 0.81 <br /> 1125!2013 1st Qtr. NA 31.3 NA 9 4J <0.5 520 3,2260 773 0.81 <br /> 4/10/2013 2nd Qtr. NA 38.9 NA 8 <10 <0.5 356 3,060 776 1.0 <br />