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<br />July 2015
<br />Table 3: Summary of Monitoring Results for MW -3
<br />Date
<br />Benchmark
<br />Level
<br />Benchmark Basis
<br />2/18/2014
<br />5/21/2014
<br />8/27/2014
<br />11/11/2014
<br />2/18/2015
<br />5/27/2015
<br />Metals
<br />Arsenic, Dissolved (mg/L
<br />0.062
<br />Statistical Limit
<br />0.0009 B
<br />0.0005 B
<br />NA
<br />NA
<br />NA
<br />NA
<br />Barium, Dissolved (mg/L)
<br />2.0
<br />Regulatory Limit
<br />2.31
<br />2.02
<br />2.23
<br />2.62
<br />2.25
<br />2.83
<br />Boron, Dissolved (mg/L)
<br />0.75
<br />Statistical Limit
<br />0.74
<br />0.76
<br />0.76
<br />0.78
<br />0.81
<br />0.74
<br />Chromium, Dissolved (mg/L
<br />0.1
<br />Regulatory Limit
<br />< 0.004 U
<br />< 0.004 U
<br />NA
<br />NA
<br />NA
<br />NA
<br />Copper, Dissolved (mg/L
<br />0.2
<br />Statistical Limit
<br />< 0.05 U
<br />< 0.05 U
<br />NA
<br />NA
<br />NA
<br />NA
<br />Iron, Dissolved (mg/L
<br />0.3
<br />Regulatory Limit
<br />0.19
<br />0.30
<br />0.29
<br />0.29
<br />0.79
<br />0.19
<br />Lead, Dissolved (mg/L
<br />0.05
<br />Regulatory Limit
<br />< 0.001 U
<br />0.0002 B
<br />NA
<br />NA
<br />NA
<br />NA
<br />Lithium, Dissolved (mg/L
<br />2.5
<br />Statistical Limit
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />Manganese, Dissolved (mg/L
<br />0.08
<br />Statistical Limit
<br />0.043
<br />0.05
<br />0.05
<br />0.061
<br />0.054
<br />0.02 B
<br />Selenium, Dissolved (mg/L
<br />0.02
<br />Statistical Limit
<br />< 0.0005 U
<br />0.0002 B
<br />NA
<br />NA
<br />NA
<br />NA
<br />Thallium, Dissolved (mg/L
<br />0.01
<br />Statistical Limit
<br />< 0.001 U
<br />< 0.001 U
<br />NA
<br />NA
<br />NA
<br />NA
<br />Uranium, Dissolved (mg/L
<br />0.03
<br />Statistical Limit
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />Zinc, Dissolved (mg/L)
<br />2.0
<br />Statistical Limit
<br />0.02 B
<br />< 0.05 U
<br />NA
<br />NA
<br />NA
<br />NA
<br />Other
<br />Chloride (mg/L
<br />1,620
<br />Statistical Limit
<br />1,570
<br />1,580
<br />1,520
<br />1,540
<br />1,530
<br />1,620
<br />Fluoride (mg/L)
<br />3.6
<br />Statistical Limit
<br />2.4
<br />2.4
<br />NA
<br />NA
<br />NA
<br />NA
<br />Nitrate as N (mg/L
<br />10
<br />Statistical Limit
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />Nitrite as N (mg/L
<br />1.0
<br />Statistical Limit
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />Nitrate+Nitrite as N (mg/L)
<br />10
<br />Statistical Limit
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />LabH s.0
<br />7.6-9.3
<br />Statistical Limit
<br />8.4 H
<br />8.3 H
<br />8.3 H
<br />8.4 H
<br />8.2 H
<br />8.3 H
<br />Total Dissolved Solids, filterable residue (mg/L
<br />4,546
<br />-RegulatoryLimit
<br />3,890
<br />3,910 H
<br />3,920 1
<br />3,890
<br />3,920
<br />3,880
<br />Sulfate (mg/L)
<br />250
<br />Regulatory Limit
<br />< 125 U
<br />< 125 U
<br />< 125 U
<br />< 125 U
<br />< 125 U
<br />< 125 U
<br />Gross Alpha Ci/L
<br />15
<br />Regulatory Limit
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />Gross Beta Ci/L
<br />none
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />NA
<br />Supplementary Analytes Not Historical) analyzed)
<br />Bicarbonate as CaCO3 (mg/L
<br />none
<br />1,220
<br />982
<br />1,270
<br />1,260
<br />NA
<br />1,200
<br />Carbonate as CaCO3 (mg/L
<br />none
<br />37
<br />57
<br />< 20 U
<br />41.6
<br />NA
<br />56.5
<br />Calcium, Dissolved (mg/L
<br />none
<br />6.7
<br />7.2
<br />6.7
<br />7.7
<br />8.7
<br />7
<br />Magnesium, Dissolved (mg/L
<br />none
<br />3
<br />3.1
<br />3.4
<br />3.2
<br />3.3
<br />2.8
<br />Potassium, Dissolved (mg/L
<br />none
<br />4.0
<br />3.8
<br />4.0
<br />4.1
<br />4.0
<br />5.3
<br />Sodium, Dissolved (m /L)
<br />none
<br />1,570
<br />1,610
<br />1,500
<br />1,490
<br />1,430
<br />1,480
<br />rvutes.
<br />B = Estimated value, less than the practical quantitation limit for that analyte, but greater
<br />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 />Values in Bold exceeded benchmark levels
<br />Determination of benchmark levels presented in Golder 2011, Results of the September
<br />2010 Groundwater Monitoring Event near the Cement Kiln Dust Disposal Area A2 at the
<br />Boettcher Limestone Quarry, La Porte Colorado (January 6)
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<br />1520788
<br />I# Golder
<br />Associates
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