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December 2016 1547675
<br /> Table 3: Summary of Monitoring Results for MW-3
<br /> Date Benchmark Benchmark 5/21/2014 8/27/2014 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
<br /> Level Basis
<br /> Metals
<br /> Arsenic,Dissolved m /L 0 062 Statistical Limit 00005 B NA NA NA NA NA NA NA NA NA NA
<br /> Barium,Dissolved(mg/L) 2.0 Regulatory Limit 2.02 2.23 2.62 1 2.25 2.83 2.47 2.81 2.58 3.16 3.16 1 2.57
<br /> Boron, Dissolved(mg/L) 075 Statistical Limit 0.76 0.76 0.78 0.81 074 0.79 074 076 074 0.79 0.77
<br /> Chromium, Dissolved m /L 0 1 Regulatory Limit <0 004 U NA NA NA NA NA NA NA NA NA NA
<br /> Copper,Dissolved m /L 02 Statistical Limit <0 05 U NA NA NA NA NA NA NA NA NA NA
<br /> Iron,Dissolved m /L 0 3 Regulatory Limit 030 029 029 0.79 019 026 0.21 02 B 02 B 0 17 029
<br /> Lead, Dissolved m /L 005 Reaulatory Limit 00002 B NA NA NA NA NA NA NA NA NA NA
<br /> Lithium,Dissolved m /L 2.5 Statistical Limit NA NA NA NA NA NA NA NA NA NA NA
<br /> Manganese, Dissolved m /L 008 Statistical Limit 005 005 0.061 0 054 002 B 003 B 003 B <0 1 U <0 1 U 0.02 B 0 033
<br /> Selenium, Dissolved (mg/L. 002 Statistical Limit 00002 B NA NA NA NA NA NA NA NA NA NA
<br /> Thallium,Dissolved m /L 001 Statistical Limit <0 001 U NA NA NA NA NA NA NA NA NA NA
<br /> Uranium,Dissolved m /L 003 Statistical Limit NA NA NA NA NA NA NA NA NA NA NA
<br /> Zinc,Dissolved(mg/L) 2.0 Statistical Limit I <0 05 U NA NA NA NA NA NA NA NA NA NA
<br /> Other
<br /> Chloride m /L 1,620 Statistical Limit 1,580 1,520 1,540 1,530 1,620 1,570 1,560 1 640 1,690 1,550 1,550
<br /> Fluoride(mg/L) 36 Statistical Limit 24 NA NA NA NA NA NA NA NA NA NA
<br /> Nitrate as N m /L 10 Statistical Limit NA NA NA NA NA NA NA NA NA NA NA
<br /> Nitrite as N m /L 1.0 Statistical Limit NA NA NA NA NA NA NA NA NA NA NA
<br /> Nitrate+Nitrite as N(mg/L) 10 Statistical Limit NA NA NA NA NA NA NA NA NA NA NA
<br /> Lab pH s u 7 6-9.3 Statistical Limit 83 H 83 H 84 H 82 H 83 H 84 H 83 H 8.4 8.3 H 8.5 H 8 4 H
<br /> Total Dissolved Solids,filterable residue (mg/L. 4,546 Re ulatory Limit 3,910 H 3,920 3,890 1 3,920 3,930 ^ 3,910 ^ 3,970 3,970 4,040 3,790 4,000
<br /> Sulfate(mg/L) 250 Regulatory Limit <125 U <125 U <125 U <125 U <125 U <125 U <125 U <50 U <50 U <50 U <50 U
<br /> Gross Alpha Ci/L 15 Regulatory Limit NA NA NA NA NA NA NA NA NA NA NA
<br /> Gross Beta Ci/L none NA NA NA NA NA NA NA NA NA NA NA
<br /> Supplementary Anal tes Not Historicaliv anal zed
<br /> Bicarbonate as CaCO3 m /L none 982 1,270 1,260 NA 1,200 1,170 1,230 1,210 1,300 1,170 1,200
<br /> Carbonate as CaCO3 m /L none 57 <20 U 41 6 NA 1 565 1 985 306 374 21.4 71 5 449
<br /> Calcium,Dissolved m /L none 72 67 77 87 7 76 69 6.7 74 7.8 73
<br /> Magnesium, Dissolved m /L none 31 34 32 33 28 3 1 29 28 30 B 32 26
<br /> Potassium, Dissolved m /L none 3.8 40 41 40 53 40 40 4.1 40 4 44
<br /> Sodium,Dissolved m /L none 1,610 1,500 1,490 1,430 1,480 1,450 1,480 1,540 1,510 1,470 1,600
<br /> Notes
<br /> B=Estimated value,less than the practical quantitation limit for that analyte,but greater 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 test with an immediate hold time
<br /> NA=Analyte not analyzed
<br /> ^=Second and third quarter 2015 reports presented calculated total dissolved solids results
<br /> Values in Bold exceeded benchmark levels
<br /> Determination of benchmark levels presented in Golder 2011, Results of the September 2010 Groundwater Monitoring Event
<br /> near the Cement Kiln Dust Disposal Area A2 at the Boettcher Limestone Quarry La Porte Colorado (January 6)
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