2021-03-16_HYDROLOGY - M1977348

• Permit No: M1977348
• IBM Index Class Name: HYDROLOGY
• Doc Date: 3/16/2021
• Doc Name Note: Event
• Doc Name: Water Monitoring - Groundwater
• From: Golder Associares, Inc.
• To: DRMS
• Email Name: AME
• Media Type: D
• Archive: No

' March 2021 20144265
Table 8: Summary of Monitoring Results for MW-8
' Date Interim Narrative Standard 12/14/2020
Metals
Arsenic, Dissolved (m /L) 0.01 0.00546
Barium, Dissolved m /L) 2 0.299
Boron, Dissolved (m /L) 0.75 0.900
' Chromium, Dissolved (m /L) 0.1 <0.002 U
Copper, Dissolved (m /L) 0.2 0.00306
Iron, Dissolved (m /L) 0.3 <0.75 U
Lead, Dissolved (m /L) 0.05 <0.0005 U
' Lithium, Dissolved(m /L) 2.5 1.55
Manganese, Dissolved (m /L) 0.05 0.0161
Selenium, Dissolved m /L 0.02 0.00179 B
Thallium, Dissolved (m /L) 0.002 <0.0025 U
Uranium, Dissolved (m /L) 0.03 0.0167
Zinc, Dissolved (m /L) 2 0.0091 B
Other
Chloride(mg/L) 250 5,910
' Fluoride m /L 2 1.66
Nitrate as N (m /L) 10 <0.1 U
Nitrite as N (m /L) 1 <0.05 U
Nitrate+Nitrite as N (m /L) 10 <0.1 U
' Lab pH s.u) 6.5-8.5 8.3 H
Total Dissolved Solids,filterable residue m /L 1.25 x Background* 10,100
Sulfate(m /L) 250 529
Gross Alpha Ci/L) 15 45 ±45)
' Gross Beta Ci/L) ** 9.1 ±44)
Field Parameters Not Available re-2010
Field pH (s.u) 6.5-8.5 8.15
Field Conductivity(µS/cm) none 14,360
' Temperature(Degrees Celsius) none 12.5
Supplementary Anal es Not Historical) anal ed
Aluminum, Dissolved(m /L) 5 0.0057 B
' Antimony, Dissolved (m /L) 0.006 0.0125 B
Beryllium, Dissolved (m /L) 0.004 <0.00025 U
Bicarbonate as CaCO3 (m /L) none 664
Carbonate as CaCO3(m /L) none <20 U
' Cadmium, Dissolved(m /L) 0.005 <0.00025 U
Calcium, Dissolved (m /L) none 23.4
Cobalt, Dissolved m /L) 0.05 0.000745
Cyanide, Free m /L) 0.2 <0.01 U
' Magnesium, Dissolved (m /L) none 18.8
Mercury, Dissolved (m /L) 0.002 <0.001 U
Molybdenum, Dissolved (m /L) 0.21 0.0225
Nickel, Dissolved(mg/L) 0.1 0.00469
' Potassium, Dissolved m /L none 16.6
Silver, Dissolved m /L 0.05 <0.005 U
Sodium, Dissolved (m /L) none 3,380
Vanadium, Dissolved m /L) 0.1 0.00440
' H =Analysis exceeded method hold time. pH is a field test with an immediate hold time.
NA=Analyte not analyzed
^=Second and third quarter 2015 reports presented calculated total dissolved solids results
Per Section 41.5(C)(6)the of Regulation 41,the"Interim Narrative Standard" , is the minimum of Table 1-
Table 4 of The Basic Standards for Groundwater(BSGW)
*TDS standard is 1.25*Background,where background is the average of the 1999-2000 sampling (when
available)
Values in bold indicate a value greater than the BSGW
' **The regulatory standard for Gross Beta is provided in units of exposure, millirems per year(mrems/yr),
which would require the measurement of specific nuclides(Tritium and Strontium)with known energy levels.
' GOLDER 1of1