Well Profile ×
B-4R
Designation
Background
Contaminant Status
0
exceedances foundTotal Exceedances / Total Samples
0 / 188 0%
Pollutant Details
NH3
Ammonia
Sb
Antimony
As
Arsenic
Ba
Barium
Be
Beryllium
B
Boron
Cd
Cadmium
Cr
Chromium
Co
Cobalt
Cu
Copper
CN
Cyanide
F
Fluoride
GAP
Gross Alpha
GBP
Gross Beta
Pb
Lead
Mn
Manganese
Hg
Mercury
Mo
Molybdenum
Ni
Nickel
NO3
Nitrate
NO2
Nitrite
Ra
Radium
Se
Selenium
Ag
Silver
Sr
Strontium
SO4
Sulfate
Tl
Thallium
T
Tritium
U
Uranium
Contaminant View ×
Chemical Symbol
Sb
Chemical Name
Antimony
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
0.006 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.00068 mg/L
0.113
5/5/2010
0.003 mg/L
0.500
8/19/2010
0.0006 mg/L
0.100
11/11/2010
8e-05 mg/L
0.013
2/16/2011
0.0006 mg/L
0.100
5/12/2011
0.0006 mg/L
0.100
8/17/2011
0.0006 mg/L
0.100
11/16/11
0.0006 mg/L
0.100
2/6/2012
0.0006 mg/L
0.100
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
As
Chemical Name
Arsenic
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
0.01 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.0052 mg/L
0.520
5/5/2010
0.00962 mg/L
0.962
8/19/2010
0.00427 mg/L
0.427
11/11/2010
0.00381 mg/L
0.381
2/16/2011
0.00216 mg/L
0.216
5/12/2011
0.00308 mg/L
0.308
8/17/2011
0.00293 mg/L
0.293
11/16/11
0.00214 mg/L
0.214
2/6/2012
0.00113 mg/L
0.113
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Ba
Chemical Name
Barium
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
2 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.0034 mg/L
0.002
5/5/2010
0.00261 mg/L
0.001
8/19/2010
0.00398 mg/L
0.002
11/11/2010
0.0023 mg/L
0.001
2/16/2011
0.00191 mg/L
0.001
5/12/2011
0.00263 mg/L
0.001
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Be
Chemical Name
Beryllium
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.004 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
9e-05 mg/L
0.023
5/5/2010
0.00011 mg/L
0.028
8/19/2010
4e-05 mg/L
0.010
11/11/2010
4e-05 mg/L
0.010
2/16/2011
4e-05 mg/L
0.010
5/12/2011
0.000144 mg/L
0.036
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
B
Chemical Name
Boron
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
3 mg/L (CHA)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.124 mg/L
0.041
5/5/2010
0.086 mg/L
0.029
8/19/2010
0.33 mg/L
0.110
11/11/2010
0.141 mg/L
0.047
2/16/2011
0.107 mg/L
0.036
5/12/2011
0.13 mg/L
0.043
8/17/2011
0.0674 mg/L
0.022
11/16/11
0.0886 mg/L
0.030
2/6/2012
0.101 mg/L
0.034
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Cd
Chemical Name
Cadmium
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.005 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.00071 mg/L
0.142
5/5/2010
0.000591 mg/L
0.118
8/19/2010
0.000702 mg/L
0.140
11/11/2010
0.00075 mg/L
0.150
2/16/2011
0.000378 mg/L
0.076
5/12/2011
0.000776 mg/L
0.155
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Cr
Chemical Name
Chromium
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.1 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.0068 mg/L
0.068
5/5/2010
0.00572 mg/L
0.057
8/19/2010
0.00556 mg/L
0.056
11/11/2010
0.00422 mg/L
0.042
2/16/2011
0.00378 mg/L
0.038
5/12/2011
0.00394 mg/L
0.039
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Cu
Chemical Name
Copper
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
1.3 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.272 mg/L
0.209
5/5/2010
0.238 mg/L
0.183
8/19/2010
0.173 mg/L
0.133
11/11/2010
0.02911 mg/L
0.022
2/16/2011
0.0587 mg/L
0.045
5/12/2011
0.0719 mg/L
0.055
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
CN
Chemical Name
Cyanide
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.2 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.005 mg/L
0.025
5/5/2010
0.006 mg/L
0.030
8/19/2010
0.007 mg/L
0.035
11/11/2010
0.008 mg/L
0.040
2/16/2011
0.006 mg/L
0.030
5/12/2011
0.006 mg/L
0.030
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
F
Chemical Name
Fluoride
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
4 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
1.16 mg/L
0.290
5/5/2010
1.03 mg/L
0.258
8/19/2010
1.27 mg/L
0.318
11/11/2010
1.05 mg/L
0.263
2/16/2011
0.98 mg/L
0.245
5/12/2011
1.3 mg/L
0.325
8/17/2011
0.902 mg/L
0.226
11/16/11
0.774 mg/L
0.194
2/6/2012
0.658 mg/L
0.165
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
GAP
Chemical Name
Gross Alpha Particle Activity
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
15 pCi/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
2.6 pCi/L
0.173
5/5/2010
1.6 pCi/L
0.107
8/19/2010
3.1 pCi/L
0.207
11/11/2010
2.3 pCi/L
0.153
2/16/2011
1.7 pCi/L
0.113
5/12/2011
1.6 pCi/L
0.107
8/17/2011
1.9 pCi/L
0.127
11/16/11
1 pCi/L
0.067
2/6/2012
1.9 pCi/L
0.127
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Pb
Chemical Name
Lead
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
0.015 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.00099 mg/L
0.066
5/5/2010
0.00077 mg/L
0.051
8/19/2010
0.00119 mg/L
0.079
11/11/2010
0.00071 mg/L
0.047
2/16/2011
0.00036 mg/L
0.024
5/12/2011
0.000851 mg/L
0.057
8/17/2011
0.00098 mg/L
0.065
11/16/11
0.000383 mg/L
0.026
2/6/2012
0.000369 mg/L
0.025
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Mn
Chemical Name
Manganese
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
0.3 mg/L (LHA)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.244 mg/L
0.813
5/5/2010
0.0475 mg/L
0.158
8/19/2010
0.08311 mg/L
0.277
11/11/2010
0.256 mg/L
0.853
2/16/2011
0.2505 mg/L
0.835
5/12/2011
0.127 mg/L
0.423
8/17/2011
0.259 mg/L
0.863
11/16/11
0.228 mg/L
0.760
2/6/2012
0.288 mg/L
0.960
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Hg
Chemical Name
Mercury
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.002 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
5.2e-05 mg/L
0.026
5/5/2010
6e-05 mg/L
0.030
8/19/2010
5.6e-05 mg/L
0.028
11/11/2010
5e-05 mg/L
0.025
2/16/2011
5e-05 mg/L
0.025
5/12/2011
5.23e-05 mg/L
0.026
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Mo
Chemical Name
Molybdenum
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
0.04 mg/L (LHA)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.0046 mg/L
0.115
5/5/2010
0.00506 mg/L
0.127
8/19/2010
0.0029 mg/L
0.072
11/11/2010
0.00192 mg/L
0.048
2/16/2011
0.0022 mg/L
0.055
5/12/2011
0.00231 mg/L
0.058
8/17/2011
0.00234 mg/L
0.059
11/16/11
0.00101 mg/L
0.025
2/6/2012
0.0006 mg/L
0.015
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Ni
Chemical Name
Nickel
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.1 mg/L (LHA)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.00946 mg/L
0.095
5/5/2010
0.0114 mg/L
0.114
8/19/2010
0.01085 mg/L
0.108
11/11/2010
0.0143 mg/L
0.143
2/16/2011
0.01223 mg/L
0.122
5/12/2011
0.00582 mg/L
0.058
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Formula
NO3
Chemical Name
Nitrate
No. Exceedances /
Monitoring Measurements
0 / 12 0%
Health-Based Standard
10 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.12 mg/L
0.012
2/10/2010
0.12 mg/L (Nitrate-nitrite)
0.012
5/5/2010
0.1 mg/L
0.010
5/5/2010
0.1 mg/L (Nitrate-nitrite)
0.010
8/19/2010
0.1 mg/L
0.010
8/19/2010
0.1 mg/L (Nitrate-nitrite)
0.010
11/11/2010
0.1 mg/L
0.010
11/11/2010
0.1 mg/L (Nitrate-nitrite)
0.010
2/16/2011
0.1 mg/L
0.010
8/17/2011
0.01 mg/L
0.001
11/16/11
0.017 mg/L
0.002
2/6/2012
0.02 mg/L
0.002
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Formula
NO2
Chemical Name
Nitrite
No. Exceedances /
Monitoring Measurements
0 / 5 0%
Health-Based Standard
1 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.01 mg/L
0.010
5/5/2010
0.01 mg/L
0.010
8/19/2010
0.04 mg/L
0.040
11/11/2010
0.02 mg/L
0.020
2/16/2011
0.02 mg/L
0.020
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Ra
Chemical Name
Radium
No. Exceedances /
Monitoring Measurements
0 / 21 0%
Health-Based Standard
5 pCi/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
1.4 pCi/L (226 & 228)
0.280
2/10/2010
1 pCi/L (226)
0.200
2/10/2010
0.4 pCi/L (228)
0.080
5/5/2010
0.5 pCi/L (226 & 228)
0.100
5/5/2010
0.3 pCi/L (226)
0.060
5/5/2010
0.2 pCi/L (228)
0.040
8/19/2010
2.9 pCi/L (226 & 228)
0.580
8/19/2010
1.6 pCi/L (226)
0.320
8/19/2010
1.3 pCi/L (228)
0.260
11/11/2010
0.6 pCi/L (226 & 228)
0.120
11/11/2010
0.4 pCi/L (226)
0.080
11/11/2010
0.2 pCi/L (228)
0.040
2/16/2011
1 pCi/L (226 & 228)
0.200
2/16/2011
0.8 pCi/L (226)
0.160
2/16/2011
0.2 pCi/L (228)
0.040
5/12/2011
1.5 pCi/L (226 & 228)
0.300
5/12/2011
1.3 pCi/L (226)
0.260
5/12/2011
0.2 pCi/L (228)
0.040
8/17/2011
0.7 pCi/L (226 & 228)
0.140
8/17/2011
0.4 pCi/L (226)
0.080
8/17/2011
0.3 pCi/L (228)
0.060
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Se
Chemical Name
Selenium
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.05 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.00162 mg/L
0.032
5/5/2010
0.0014 mg/L
0.028
8/19/2010
0.00153 mg/L
0.031
11/11/2010
0.00104 mg/L
0.021
2/16/2011
0.00152 mg/L
0.030
5/12/2011
0.0013 mg/L
0.026
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Ag
Chemical Name
Silver
No. Exceedances /
Monitoring Measurements
0 / 6 0%
Health-Based Standard
0.1 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.00085 mg/L
0.008
5/5/2010
0.00032 mg/L
0.003
8/19/2010
0.00046 mg/L
0.005
11/11/2010
0.00011 mg/L
0.001
2/16/2011
0.00021 mg/L
0.002
5/12/2011
0.000228 mg/L
0.002
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Formula
SO4
Chemical Name
Sulfate
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
500 mg/L (DWA)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
108 mg/L
0.216
5/5/2010
36.7 mg/L
0.073
8/19/2010
58 mg/L
0.116
11/11/2010
92.2 mg/L
0.184
2/16/2011
140 mg/L
0.280
5/12/2011
74.9 mg/L
0.150
8/17/2011
11.1 mg/L
0.022
11/16/11
26.1 mg/L
0.052
2/6/2012
49.4 mg/L
0.099
1Calculated by dividing the sample concentration by the health-based standard.
Contaminant View ×
Chemical Symbol
Tl
Chemical Name
Thallium
No. Exceedances /
Monitoring Measurements
0 / 9 0%
Health-Based Standard
0.002 mg/L (MCL)
Monitoring History
Date
Concentration
Magnitude1
2/10/2010
0.00022 mg/L
0.110
5/5/2010
0.00013 mg/L
0.065
8/19/2010
0.00013 mg/L
0.065
11/11/2010
0.0001 mg/L
0.050
2/16/2011
0.0001 mg/L
0.050
5/12/2011
0.000283 mg/L
0.141
8/17/2011
0.0001 mg/L
0.050
11/16/11
0.000143 mg/L
0.072
2/6/2012
0.0001 mg/L
0.050
1Calculated by dividing the sample concentration by the health-based standard.