Ground-Water Information Center Water Quality Report Site Name: DOWNING, JENNIFER 
Report Date: 3/29/2024 Compare to Water Quality Standards

Location Information
Sample Id/Site Id: 229656 / 157475 Sample Date: 5/31/2018 11:40:00 AM
Location (TRS): 12N 20W 01 DCCB Agency/Sampler: MBMG / CARSTARPHEN, CAMELA
Latitude/Longitude: 46° 49' 16" N 114° 3' 17" W Field Number: 157475
Datum: WGS84 Lab Date: 6/8/2018 8:55:13 PM
Altitude: 3144 Lab/Analyst: MBMG / TIMMER, JACKIE
County/State: MISSOULA / MT Sample Method/Handling: PUMPED / ru:1 ra:0 fu:1 fa:2
Site Type: WELL Procedure Type: DISSOLVED
Geology: 112ALVM Total Depth (ft): 93
USGS 7.5' Quad: SWL-MP (ft): 9.88
PWS Id: Depth Water Enters (ft): 93
Project: GWCP04
Major Ion Results
mg/L meq/L mg/L meq/L
Calcium (Ca) 40.970 2.044 Bicarbonate (HCO3) 198.130 3.247
Magnesium (Mg) 18.540 1.526 Carbonate (CO3) 0.000 0.000
Sodium (Na) 16.310 0.709 Chloride (Cl) 24.060 0.679
Potassium (K) 2.610 0.067 Sulfate (SO4) 26.830 0.559
Iron (Fe) <0.015 U 0.000 Nitrate (as N) 2.590 0.185
Manganese (Mn) <0.002 U 0.000 Fluoride (F) 0.230 0.012
Silica (SiO2) 35.630 Orthophosphate (as P) 0.060 J 0.000
Total Cations 4.352 Total Anions 4.682
Trace Element Results (µg/L)
Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 1.180 Strontium (Sr): 205.580
Antimony (Sb): <0.100 U Chromium (Cr): 0.380 J Nickel (Ni): <0.100 U Thallium (Tl): <0.100 U
Arsenic (As): 1.950 Cobalt (Co): <0.100 U Niobium (Nb): <0.100 U Thorium (Th): <0.100 U
Barium (Ba): 271.690 Copper (Cu): 12.440 Neodymium (Nd): <0.100 U Tin (Sn): 0.410 J
Beryllium (Be): <0.100 U Gallium (Ga): 11.190 Palladium (Pd): <0.100 U Titanium (Ti): 0.240 J
Boron (B): 5.030 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U
Bromide (Br): <10.000 U Lead (Pb): 0.260 J Rubidium (Rb): 0.810 Uranium (U): 5.450
Cadmium (Cd): <0.100 U Lithium (Li): 17.760 Silver (Ag): <0.100 U Vanadium (V): 0.900
Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.950 Zinc (Zn): 8.030
Zirconium (Zr): <0.100 U
Field Chemistry and Other Analytical Results
**Total Dissolved Solids (mg/L): 266.07 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR
**Sum of Diss. Constituents (mg/L): 366.53 Hardness as CaCO3: 178.61 T.P. Hydrocarbons (µg/L): NR
Field Conductivity (µmhos): 431 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR
Lab Conductivity (µmhos): 416.65 Alkalinity as CaCO3 (mg/L): 162.39 Phosphorus, TD (mg/L): 0.070 J
Field pH: 7.1 Ryznar Stability Index: 8.264 Field Nitrate (mg/L): 2.000
Lab pH: 6.99 Sodium Adsorption Ratio: 0.5209 Field Dissolved O2 (mg/L): NR
Water Temp (°C): 11.7 Langlier Saturation Index: -0.637 Field Chloride (mg/L): NR
Air Temp (°C): NR Nitrite (mg/L as N): <0.010 U Field Redox (mV): NR
Nitrate + Nitrite (mg/L as N) 2.270 Hydroxide (mg/L as OH): 0.000 Lab, Dissolved Organic Carbon (mg/L): NR
Total Kjeldahl Nitrogen (mg/L as N) NR Lab, Dissolved Inorganic Carbon (mg/L): NR Lab, Total Organic Carbon (mg/L): NR
Total Nitrogen (mg/L as N) NR Acidity to 4.5 (mg/L CaCO3) NR Acidity to 8.3 (mg/L CaCO3) NR
As(III) (ug/L) NR As(V) (ug/L) NR Total Susp Solids (mg/L) NR
Notes
Sample Condition: CLEAR
Field Remarks: WELL UPGRADIENT FROM YOUNGER ALLUVIAL FLOODPLAIN CURRENTLY FLOODED. WELL CHLORINATED DAY BEFORE SAMPLING.
Lab Remarks:
Explanation: mg/L = milligrams per Liter; µg/L = micrograms per Liter; ft = feet; NR = No Reading in GWIC
Qualifiers: J = Estimated quantity above detection limit but below reporting limit; P = Preserved sample; S = Method of standard additions; U = Undetected quantity below detection limit; * = Duplicate analysis not within control limits; ** = Sum of Dissolved Constituents is the sum of major cations (Na, Ca, K, Mg, Mn, Fe) and anions (HCO3, CO3, SO4, Cl, SiO2, NO3, F) in mg/L. Total Dissolved Solids is reported as equivalent weight of evaporation residue.
Disclaimer
These data represent the contents of the GWIC databases at the Montana Bureau of Mines and Geology at the time and date of the retrieval. The information is considered unpublished and is subject to correction and review on a daily basis. The Bureau warrants the accurate transmission of the data to the original end user. Retransmission of the data to other users is discouraged and the Bureau claims no responsibility if the material is retransmitted.