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1 March 2019 <br /> 18107649 <br /> 1 Table 7:Summary of Monitoring Results for MW-6 <br /> Date Interim Narrative 5131/2017 11/15/2017 616/2018 11/15/2018 <br /> Standard <br /> Aletale <br /> 1 Arsenic,Dissolved(mg/L) 0.01 NA NA NA 0.007 B <br /> Barium,Dissolved m L 2 7.85 7.77 7.65 7.25 <br /> Boron,Dissolved(mg/1-1 0.75 0.7 0.8 0.6 0.6 <br /> Chromium,Dissolved m/L 0.1 NA NA NA <0.02 U <br /> Copper,Dissolved m/L 0.2 NA NA NA <0.02 U <br /> Iron,Dissolved m/L 0.3 1.7 3.4 3.0 2.9 <br /> 1 Lead,Dissolved m/L 0.05 NA NA NA <0.005 U <br /> Lithium,Dissolved m/L 2.5 NA NA NA 1.74 <br /> Manganese,Dissolved m/L 0.05 0.14 B 0.07 B 0.06 B 0.09 <br /> Selenium,Dissolved m/L 0.02 1 NA NA NA <0.003 U <br /> Thallium,Dissolved m IL 0.002 NA NA NA <0.005 U <br /> Uranium,Dissolved m/L 0.03 NA NA NA 0.004 <br /> Zinc,Dissolved m/L 2 NA NA NA <0.5 U <br /> 1OlhW <br /> Chloride m L 250 6,130 5,900 5,880 6,490 <br /> Fluoride m L 2 NA NA NA 1.09 <br /> Lab H s.0 6.5-8.5 8.1 H 7.7 H 7.8 H 8 H <br /> Total Dissolved Solids,filterable residue m/L 1.25 x Background* 10,500 10,400 10,500 10,700 <br /> Sulfate m/L 250 <250 U <200 U 51 B <200 U <br /> 1 Gross Alpha Ci/L 15 NA NA NA 47 t36 <br /> Gross Beta Ci/L NA NA NA 43 t35 <br /> Supplementary Supplementery AnaWn <br /> Aluminum,Dissolved m/L 5 NA NA NA <2 U <br /> Antimony,Dissolved m/L 0.006 NA NA NA <0.02 U- <br /> Beryllium,Dissolved(mg/L 0.004 NA NA NA <0.003 U <br /> Bicarbonate as CaCO3 m/L none 658 639 652 NA <br /> Carbonate as CaCO3 m/L none <20 U <20 U <20 U NA <br /> Cadmium,Dissolved m/L 0.005 NA NA NA <0.003 U <br /> Calcium,Dissolved m/L none 51 44 41 47 <br /> Cobalt,Dissolved m/L 0.05 NA NA NA <0.003 U <br /> Cyanide,Free m/L 0.2 NA NA NA 0.009 B <br /> Magnesium,Dissolved m/L none 16 16 16 16 <br /> 1 Mercury,Dissolved m/L 0.002 NA NA NA <0.001 U <br /> Molybdenum,Dissolved m/L 0.21 NA NA NA 0.025 B <br /> Nickel,Dissolved m L 0.1 NA NA NA 0.007 B <br /> Potassium,Dissolved m/L none 9 B 9 B 8 B 10 <br /> Silver,Dissolved m/L 0.05 NA NA NA <0.005 U <br /> Sodium,Dissolved m IL none 3,920 4,060 3,870 3,960 <br /> 1 Vanadium Dissolved m/L 0.1 NA NA NA <br /> Notes: <br /> B=Estimated value.less than the practical quantitation limit for that analyte,but qreater than the method detection limit <br /> U=Analyte not detected,reported less than the practical quantitation limit <br /> H=Analysis exceeded method hold time.PH is a field lest with an immediate hold time. <br /> NA=Analyte not analyzed <br /> "=Second and third quarter 2015 reports presented calculated total dissolved solids results <br /> 1 Per Section 41.5(C)(6)the of Regulation 41,the"Interim Narrative Standard",is the minimum of Table 1-Table 4 of The Basic Standards for Groundwater <br /> "TDS standard is 1.25'Background,where background is the average of the 1999-2000 sampling <br /> Values in bold indicate a value greater than the BSGW <br /> "The regulatory standard for Gross Beta is provided in units of exposure,millirems per year(mrems/yr),which would require the measurement of specific nuclides <br /> (Tritium and Strontium)with known energy levels. Specific nuclides were not part of the approved constituent list. <br /> i <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 J GOLDER 2 <br />