2020-03-19_HYDROLOGY - M1977348

• Permit No: M1977348
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/19/2020
• Doc Name: Water Monitoring - Groundwater
• From: Golder
• To: DRMS
• Email Name: AME
• Media Type: D
• Archive: No

'March 2020 19121576
1 Table 6:Summary of Monitoring Results for MW-6
I Date Units Interim Narrative
Standard 5/31/2017 11/15/2017 6/6/2018 11/15/2018 6/12/2019 12/12/2019
Metals
I Arsenic,Dissolved mg/L 0.01 NA NA NA 0.007 B 0.0074 0.007 B
Barium,Dissolved mg/L 2 7.85 7.77 7.65 7.25 6.66 6.84
Boron,Dissolved mg/L 0.75 0.7 0.8 0.6 0.6 0.6 B 0.67
Chromium,Dissolved mg/L 0.1 NA NA NA <0.02 U <0.002 U <0.005 U
I
Copper, Dissolved mg/L 0.2 NA NA NA <0.02 U <0.002 U <0.008 U
Iron,Dissolved mg/L 0.3 1.7 3.4 3.0 2.9 2.2 2.87
Lead,Dissolved mg/L 0.05 NA NA NA <0.005 U <0.0005 U <0.001 U
Lithium,Dissolved mg/L 2.5 NA NA NA 1.74 1.87 2.21
Manganese,Dissolved mg/L 0.05 0.14 B 0.07 B 0.06 B 0.09 0.0733 U 0.079
I
Selenium,Dissolved mg/L 0.02 NA NA NA <0.003 U 0.0009 <0.001 U
Thallium,Dissolved mg/L 0.002 NA NA NA <0.005 U <0.0005 U <0.0001 U
Uranium,Dissolved mg/L 0.03 NA NA NA 0.004 0.0023 0.004 B
Zinc,Dissolved mg/L 2 NA NA NA <0.5 U <0.5 U <0.05 U
I Other
Chloride mg/L 250 6,130 5,900 5,880 6,490 6,610 H 6,390
Fluoride mg/L 2 NA NA NA 1.09 1.2 1.2
Nitrate as N mg/L 10 NA NA NA NA NA <0.02 U
I
Nitrite as N mg/L 1 NA NA NA NA NA <0.01 U
Nitrate+Nitrite as N mg/L 10 NA NA NA NA NA <0.02 U
Lab pH s.0 6.5-8.5 8.1 H 7.7 H 7.8 H 8 H 7.9 H 8.1 H
•
Total Dissolved Solids,filterable residue _ mg/L 1.25 x Background* 10,500 _ 10,400 10,500 10,700 10,600 10,300
' Sulfate mg/L 250 <250 U <200 U 51 B <200 U <200 U <40 U
•Gross Alpha pCi/L 15 NA NA NA 47(±36) 33(±24) 0.0(±52)
Gross Beta pCi/L NA NA NA 43(±35) 56(±47) 0.78(±63)
Field Parameters(Not Available pre-2010))
Field pH s.0 6.5-8.5 7.79 7.86 7.76 7.34 7.76 7.72
Field Conductivity NS/cm none 17,850 17,470 18,950 17,560 18,000 11,290
Temperature Degrees Celsius none 16.6 11.3 17.7 11.1 17.9 10
Supplementary Analytes(Not Historically analyzed Not Historically analyzed
Aluminum,Dissolved mg/L 5 NA NA NA <2 U <3 U <0.05 U
I Antimony,Dissolved mg/L 0.006 NA NA NA <0.02 U 0.0014 B <0.004 U
Beryllium,Dissolved mg/L 0.004 NA NA NA <0.003 U <0.0003 U <0.0008 U
Bicarbonate as CaCO3 mg/L none 658 639 652 NA 685 H 702
Carbonate as CaCO3 mg/L none <20 U <20 U <20 U NA <20 UH <2 U
I Cadmium,Dissolved mg/L 0.005 NA NA NA <0.003 U 0.00006 B <0.0005 U
Calcium,Dissolved mg/L none 51 44 41 47 40 45.4
Cobalt,Dissolved mg/L 0.05 NA NA NA <0.003 U 0.00024 B <0.0005 U
Cyanide,Free mg/L 0.2 NA NA NA 0.009 B 0.012 <0.003 U
I
Magnesium,Dissolved mg/L none 16 16 16 16 - 14 15.8
Mercury,Dissolved mg/L 0.002 NA NA NA <0.001 U <0.001 U <0.0002 U
Molybdenum,Dissolved mg/L 0.21 NA NA NA 0.025 B 0.0208 U 0.021
Nickel,Dissolved mg/L 0.1 NA NA NA 0.007 B 0.0063 U 0.01
Potassium,Dissolved mg/L none 9 B 9 B 8 B 10 9 B 11.6
I Silver,Dissolved mg/L 0.05 NA NA NA <0.005 U <0.0005 U <0.001 U
Sodium,Dissolved mg/L none 3,920 4,060 3,870 3,960 3,910 3,960
Vanadium,Dissolved mg/L 0.1 NA NA NA <0.02 U 0.0005 U <0.005 U
H=Analysis exceeded method hold time.pH is a field test with an immediate hold time.
I NA=Analyte not analyzed
A=Second and third quarter 2015 reports presented calculated total dissolved solids results
"Interim Narrative Standard",is the minimum of Table
*TDS standard is 1.25*Background,where background is the average of the 1999-2000 sampling
I Values in bold indicate a value greater than the BSGW
in units of exposure,millirems per year(mrems/yr),
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14 GOLDER
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