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July 2018 Table 7: Summary of Monitoring Results for MW -7 Date Interim Narrative Standard 3/19/2013 5/2912013 8/27/2013 11/14/2013 2/18/2014 5/21/2014 8127/2014 11/11/2014 2/18/2015 5/27/2015 8/27/2015 11/9/2015 2/15/2016 5/31/2016 8/16/2016 11/9/2016 Metals Arsenic, Dissolved (mg/L none 0.010 0.010 B 0 011 0.0088 0.015 0.009 B NA NA NA NA NA NA NA NA NA NA Barium, Dissolved (mg/L none 0.16 B 0 14 B 0.33 208 1.78 3.52 2.35 3.7 5.43 4.74 266 2.65 4.66 3.79 1.24 4.19 Boron, Dissolved (mg/L none 06 0.9 0.79 0.75 0.75 0.7 0.8 0.8 0.7 B 0.6 0.73 0.7 0.8 0.6 0.5 0.63 Chromium, Dissolved (mg/L none <001 U < 0.02 U 0.009 B < 0.02 U < 0.02 U <002 U NA NA NA NA NA NA NA NA NA NA Copper, Dissolved (mg/L none < 0 5 U < 0.5 U < 0.3 U < 0 3 U <0.3 U <0.5 U NA NA NA NA NA NA NA NA NA NA Iron, Dissolved /L none 1.6 3.4 1.5 2.9 2.9 2.8 4.4 3.8 4.6 58 4.7 4.6 6.3 5.9 2.3 3.26 Lead, Dissolved m /L) Manganese, Dissolved (mg/L none none < 0.003 U 0.27 < 0.005 U 0.66 < 0.005 U 0.51 < 0.005 U 0.61 < 0.005 U 0.53 < 0.005 U 0.41 NA 0.66 NA 0.45 NA 0.38 NA 038 NA 037 NA 0.36 NA 0.3 NA 0 3 I NA 0.25 B NA 0.205 Selenium, Dissolved (mg/L none 0.0025 0.006 < 0.003 U 0.002 B 0.001 B 0 001 B NA NA NA NA NA NA L NA NA NA NA Thallium, Dissolved (mg/L none < 0.003 U < 0.005 U < 0.005 U < 0.005 U < 0.005 U < 0.005 U NA NA NA NA NA NA NA NA NA NA Zinc, Dissolved (m /L) none < 0.5 U < 0 5 U < 0.3 U <0.3 U <0.31J < 0.5 U NA NA NA NA NA NA NA NA NA NA Other Chloride (m /L) Fluoride (mg/L none none 3,701 1.3 5,280 1.0 6,040 1 1 6,430 1.1 6,030 1 6,510 1.04 5,330 NA 5,850 NA 6,140 NA 6,330 NA 5,860 NA 5,680 NA 6,230 NA 5,850 NA 5,550 NA 5,990 NA Lab pH (s.u) Total Dissolved Solids, filterable residue (mg/L none none 8.1H 8,640 8 0 H 11,500 79 H 10,200 H 7.9H 10,700 H 8.0H 10,300 7.6H 10,600 H 7.9H 10,100 7 9 H 10,600 7.8H 10,500 7.8H 10,200 ^ 79H 8,800 A 78H 10,400 7.75 10,800 7.6H 10,900 7.6H 10,100 8H 10,700 Sulfate (m /L) none 1,589 1,240 510 130 B 104 B 60.9 B 80.2 B < 250 U < 250 U < 250 U < 250 U < 250 U < 250 U < 250 U 179 B 101 B Supplementary Analytes Bicarbonate as CaCO3 (mg/L none 458 696 715 838 822 785 837 NA 765 853 828 821 828 844 836 Carbonate as CaCO3 m /L none <20 UE14,150 < 20 U <20 U <20 U <20 U < 20 U <20 U NA <20 U < 20 U < 20 U <20 U < 20 U < 20 U <20 U Calcium, Dissolved m /L none 105 103 72 67.8 58 56 51 50 47 52 53 54 50 54 471 Magnesium, Dissolved m /L none 40 30 25 22 21 21 20 23 19 19 18 20 18 19 18 Potassium, Dissolved m /L none 11 B 12 11 10 10 11 9 B 13 B 9 B 9 10 11 10 10 8.8 Sodium, Dissolved (mg/L) none 3,200 4,720 4,280 4,020 4,350 3,910 3,740 3,970 4,010 3,930 3,880 4,240 3,930 3,820 4,330 Notes - B = Estimated value, less than the practical quantitation limit for that analyte, but greater than the method detection limit U = Analyte not detected, reported less than the practical quantitation limit H = Analysis exceeded method hold time. pH is a field test with an immediate hold time NA = Analyte not analyzed ^ = Second and third quarter 2015 reports presented calculated total dissolved solids results Per Section 41 5 (C) (6) the of Regulation 41, the "Interim Narrative Standard" does not apply the waters with TDS grater than 10,000 mg/L 1899205 C\UwmZSkmnenOoldwAsa iales\/899205 HddmBosBchwOuarty2018CO-Reports/Boettcher_SamplRe it_lstHa12018_De-23JullBkTeWesX 1 t> G O L D E R