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/March 2020 19121576
<br /> ITable 7:Summary of Monitoring Results for MW-7
<br /> I Date Units Interim Narrative
<br /> Standard 5/31/2017 11/15/2017 6/6/2018 11/15/2018 6/12/2019 12/12/2019
<br /> Metals
<br /> I Arsenic, Dissolved mg/L 0.01 NA NA NA 0.002 B 0.0031 0.002 B
<br /> Barium, Dissolved mg/L 2 3.96 3.8 5.5 3.42 4.42 2.86
<br /> Boron, Dissolved mg/L 0.75 0.7 0.8 0.7 0.7 0.7 B 0.64
<br /> Chromium, Dissolved mg/L 0.1 NA NA NA <0.02 U <0.002 U <0.005 U
<br /> I
<br /> Copper, Dissolved mg/L
<br /> mg/L 0.2 NA NA NA <0.02 U <0.002 U <0.008 U
<br /> Iron, Dissolved 0.3 5.5 6.1 3.2 3.9 2 2.81
<br /> Lead, Dissolved mg/L 0.05 NA NA NA <0.005 U <0.0005 U <0.001 U
<br /> Lithium, Dissolved mg/L 2.5 NA NA NA 1.84 2.02 2.30
<br /> I Manganese, Dissolved mg/L 0.05 0.19 B 0.18 B 0.14 B 0.11 B 0.2 B 0.122
<br /> Selenium, Dissolved mg/L 0.02 NA NA NA <0.003 U 0.001 <0.001 U
<br /> Thallium, Dissolved mg/L 0.002 NA NA NA <0.005 U <0.0005 U <0.0001 U
<br /> Uranium, Dissolved mg/L 0.03 NA NA NA 0.005 0.004 0.005
<br /> I
<br /> Zinc, Dissolved mg/L 2 NA NA NA <0.5 U 0.1 B 0.19 B
<br /> Other
<br /> Chloride mg/L 250 6,480 6,240 6,440 7,310 7,480 H 6,780
<br /> Fluoride mg/L 2 NA NA NA 0.88 1 0.9
<br /> U
<br /> Nitrate as N mg/L 10 NA NA NA NA NA 0.57
<br /> Nitrite as N mg/L 1 NA NA NA NA NA <0.01 U
<br /> Nitrate+Nitrite as N mg/L 10 NA NA NA NA NA 0.57
<br /> Lab pH s.0 6.5-8.5 8 H 7.8 H 7.7 H 7.9 H 7.9 H 7.9 H
<br /> I Total Dissolved Solids,filterable residue mg/L
<br /> mg/L 1.25 x Background* 11,100 11,300 11,500 IFI11,300 11,300 11,200
<br /> Sulfate 250 59 B 58 B 75 B 83.9 B 63.8 B 54.1 B
<br /> Gross Alpha pCi/L 15 NA NA NA 5.8(±29) 23(±41) -50(±26)
<br /> Gross Beta pCi/L '" NA NA NA 34(±42) 42(±252) 35(±59)
<br /> I Field Parameters(Not Available pre-2010))
<br /> Field pH s.0 6.5-8.5 7.65 7.17 7.37 7.19 7.61 7.58
<br /> Field Conductivity pS/cm none 19,350 18,550 20,050 19,200 19,110 11,900
<br /> Temperature Degrees Celsius none 22.5 12.3 16.4 12.9 16.3 8.3
<br /> I Supplementary Analytes(Not Historically analyzed) Not Historically analyzed
<br /> Aluminum, Dissolved mg/L 5 NA NA NA <2 U <3 U <0.05 U
<br /> Antimony, Dissolved mg/L 0.006 NA NA NA <0.02 U 0.0015 B <0.004 U
<br /> Beryllium, Dissolved mg/L 0.004 NA NA NA <0.003 U <0.0003 U <0.0008 U
<br /> I Bicarbonate as CaCO3 mg/L none 745 700 714 NA 681 H 701
<br /> Carbonate as CaCO3 mg/L none <20 U <20 U <20 U NA <20 UH <2 U
<br /> Cadmium, Dissolved mg/L 0.005 NA NA NA <0.003 U 0.00007 B <0.0005 U
<br /> Calcium, Dissolved mg/L none 52 55 52 54 53 54.4
<br /> I
<br /> Cobalt, Dissolved mg/L 0.05 NA NA NA <0.003 U 0.00025 B - <0.0005 U
<br /> Cyanide, Free mg/L 0.2 NA NA NA 0.005 B 0.012 0.003 B
<br /> Magnesium, Dissolved mg/L none 19 20 20 19 18 18.5
<br /> Mercury, Dissolved mg/L 0.002 NA NA NA <0.001 U <0.001 U <0.0002 U
<br /> I Molybdenum, Dissolved mg/L 0.21 NA NA NA 0.022 B 0.0182 U 0.017
<br /> Nickel, Dissolved mg/L 0.1 NA NA NA <0.03 U <0.001 U <0.004 U
<br /> Potassium, Dissolved mg/L none 11 9 B 9 B 11 11 12.7
<br /> Silver, Dissolved mg/L 0.05 NA NA NA <0.005 U <0.0005 U <0.001 U
<br /> I Sodium, Dissolved mg/L none 4,240 4,320 4,170 4,250 4,220 4,250
<br /> Vanadium, Dissolved mg/L 0.1 NA NA NA <0.02 U 0.0008 U <0.005 U
<br /> H=Analysis exceeded method hold time. pH is a field test with an immediate hold time.
<br /> NA=Analyte not analyzed
<br /> I A=Second and third quarter 2015 reports presented calculated total dissolved solids results
<br /> "Interim Narrative Standard", is the minimum of Table
<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 /> I
<br /> units of exposure,millirems per year(mrems/yr),which
<br /> I
<br /> I.> GOLDER 14/14
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