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December 2016 1547675
<br /> Table 2: Summary of Monitoring Results for MW-2
<br /> Date Benchmark Level Benchmark Basis 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 /> Metals
<br /> Arsenic,Dissolved m /L 015 Statistical Limit 0 006 NA NA NA NA NA NA NA NA NA NA
<br /> Barium,Dissolved(mg/L) 20 Regulatory Limit 2.28 2.57 1.71 2.03 2.65 2.04 190 20 1 93 2.23 1 88
<br /> Boron,Dissolved(mg/L) 0.75 Statistical Limit 075 075 074 0.73 072 075 068 0.79 068 073 071
<br /> Chromium, Dissolved m /L 03 Statistical Limit <0 01 U NA NA NA NA NA NA NA NA NA NA
<br /> Copper,Dissolved m /L 03 Statistical Limit <0 05 U NA NA NA NA NA NA NA NA NA NA
<br /> Iron, Dissolved m /L 0.71 Statistical Limit 2.5 1.16 0.82 038 06 07 04 04 B 02 B 1.2 0 28
<br /> Lead, Dissolved m /L 005 Regulatory Limit <0 003 U 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 049 Statistical Limit 0 097 0.105 0 103 0 075 005 B 007 B 008 B 008 B 005 B 010 0 058
<br /> Selenium, Dissolved m /L 002 Statistical Limit 00007 B NA NA NA NA NA NA NA NA NA NA
<br /> Thallium, Dissolved m /L 001 Statistical Limit <0 003 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) 20 Statistical Limit <0 05 U NA NA NA NA NA NA NA NA NA NA
<br /> Other
<br /> Chloride m /L 3,640 Statistical Limit 3,240 2,930 2,980 2,990 3,150 3,100 3,040 3,240 3 120 3,110 3,010
<br /> Fluoride(mg/L) 2A Statistical Limit 148 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 I 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 pHsu 7 4-8 8 Statistical Limit 80 H 80 H 83 H 80 H 80 H 8.3 H 82 H 83 81 H 84 H 84 H
<br /> Total Dissolved Solids,filterable residue m /L 6,971 Regulatory Limit 6,040 H 1 5,730 1 6,180 6,230 6,000 ^ 5,520 A 6,020 6,230 6,080 6,010 6,300
<br /> Sulfate(mg/L) 250 Regulatory Limit <250 U <250 U <250 U <250 U <250 U <250 U <250 U <250 U <125 U <250 U <125 U
<br /> Gross Alpha(pCifl 15 1 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 Historical) analyzed)
<br /> Bicarbonate as CaCO3 m /L none 1,100 1,080 1,100 NA 1,070 1,040 1,050 1,040 1,100 1,000 1,010
<br /> Carbonate as CaCO3 m /L none <20 U <20 U <20 U NA <20 U <20 U <20 U <20 U <20 U 409 407
<br /> Calcium,Dissolved m /L none 182 17.9 174 175 173 1 173 1 172 18 1 169 175 16.6
<br /> Magnesium,Dissolved m /L) none 69 66 74 74 70 1 80 1 70 80 B 70 80 66
<br /> Potassium,Dissolved m /L none 65 61 6 64 7.0 70 1 60 80 60 1
<br /> 60 67
<br /> Sodium,Dissolved m /L 2 none 2,440 2,330 2,260 2,390 2,270 ,370 1 2,260 2,560 2,350 1 2,230 2,430
<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 /> A=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 near the Cement Kiln Dust Disposal Area A2 at the Boettcher Limestone Quarry, La Porte Colorado (January 6)
<br /> Golder
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