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ameO <br /> TABLE B.4-3 <br /> Major and Minor Ion Composition of Groundwater Samples <br /> (concentrations reported in millgrams per liter) <br /> Nitrate as <br /> Calcium Magnesium Potassium Sodium Sulfate Chloride N Boron <br /> Sample EPA EPA EPA EPA EPA EPA EPA <br /> Well ID Date 601OB 601 OB 60108 60108 300.1 300.1 Alkalinity EPA 300.1 6010B <br /> EU-3 08/03/10 110 38 7.7 110 130 170 NM 8.9 0.24 <br /> EU-4 08/03/10 120 40 7.5 91 120 160 NM 10 0.22 <br /> EW-1 08/03/10 120 32 9.5 61 90 170 NM 9.2 0.17 <br /> M-1OA 04/26/10 120 36 9.9 45 57 110 340 11 0.16 <br /> M-1OA 08/03/10 110 33 9.4 45 71 110 NM 13.00 0.16 <br /> M-1OC1 04/27/10 50 13 6.1 33 17 48 160 6.0 0.12 <br /> M-1OC1 08/03/10 46 12 5.9 35 20 51 NM 7.0 0.12 <br /> M-17A 08/03/10 29 9.1 3.9 33 12 34 NM <0.23 0.17 <br /> M-17B 08/03/10 70 27 4.8 67 53 67 NM 7.2 0.21 <br /> M-17C1 04/27/10 63 15 7.2 72 17 74 290 <0.23 0.14 <br /> M-17C1 08/03/10 58 14 6.8 74 22 77 NM 0.26 0.15 <br /> M-1B 08/03/10 70 32 6.0 150 99 67 NM 30 0.47 <br /> M-2OC1 04/26/10 110 30 10 73 72 190 280 2.1 0.16 <br /> M-2OC1 08/05/10 46 11 5.9 55 11 120 NM <0.23 0.12 <br /> M-2OD 08/05/10 19 4.4 4.3 51 3.7 48 NM 0.33 0.19 <br /> M-25C1 04/26/10 120 36 9.7 45 57 180 280 3.6 0.11 <br /> M-25C1 08/03/10 100 31 8.8 44 62 180 NM 3.7 0.11 <br /> M-25C2 04/26/10 32 7.4 5.3 42 9.8 47 140 1.6 0.15 <br /> M-25C2 08/03/10 29 6.5 5.0 48 11 52 NM 1.9 0.25 <br /> M-26C2 04/27/10 130 36 11 110 170 190 NM 1.1 0.18 <br /> M-26C2 08/05/10 120 30 8.6 120 170 190 350 0.79 0.18 <br /> M-31 C1 04/27/10 26 6.6 5.3 88 19 64 210 0.26 0.20 <br /> M-31 C1 08/03/10 23 5.6 4.6 90 15 59 NM 0.28 0.21 <br /> M-41D 08/05/10 63 15 7.1 130 3.1 320 NM <0.23 0.15 <br /> M-49A 08/02/10 86 32 7.0 120 68 120 NM 21 0.31 <br /> M-54C 08/05/10 68 16 6.5 67 21 88 NM <0.23 0.14 <br /> M-6A 04/26/10 130 35 11 61 75 170 350 4.3 0.16 <br /> M-6A 08/02/10 130 33 9.5 62 87 180 NM 4.9 0.16 <br /> M-613 08/02/10 130 62 7.9 200 150 240 NM 52 0.59 <br /> M-6C1 04/26/10 80 20 7.6 40 25 91 280 5.2 0.11 <br /> M-6C1 08/02/10 76 19 7.2 42 30 96 NM 4.7 0.11 <br /> M-6C2 04/26/10 43 10 6.0 54 13 53 200 1.6 0.15 <br /> M-6C2 08/02/10 40 9.4 5.6 55 14 53 NM 1.5 0.15 <br /> M-61D 08/02/10 16 3.6 4.0 70 15 49 NM 3.3 0.17 <br /> M-8A 08/05/10 89 19 8.5 51 55 110 NM 0.58 0.13 <br /> M-813 08/05/10 110 54 5.9 120 120 130 NM 19 0.40 <br /> M-8C1 08/05/10 120 30 9.0 71 99 180 NM <0.23 0.15 <br /> M-81D 08/05/10 61 14 7.5 120 14 280 NM 1.3 0.18 <br /> TH-10 04/26/10 41 10 6.7 95 11 59 300 <0.23 0.18 <br /> TH-10 08/03/10 38 9.4 5.8 99 11 61 NM 0.25 0.18 <br /> Abbreviations <br /> N=nitrogen <br /> NM=not measured <br /> AMEC Geomatrix, Inc. <br /> \\oad-fs1\doc_safe\9000s\9837.006\4000 REGULATORYTS Assessment_Apx B_012711\Attachment B.4\Table B.4-3.x1s Page 1 of 1 <br />