Ground-Water Information Center Water Quality Report Site Name: MICHEL SAM  Report Date: 4/24/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2008Q0125 / 77462 Sample Date: 8/16/2007 4:04:00 PM Location (TRS): 23N 06W 18 CDBA Agency/Sampler: MBMG / MASON, DONALD C. Latitude/Longitude: 47° 44' 35" N 112° 25' 36" W Field Number: 77462 Datum: NAD83 Lab Date: 9/17/2007 Altitude: 4270 Lab/Analyst: MBMG / WO County/State: TETON / MT Sample Method/Handling: PUMPED / Site Type: WELL Procedure Type: DISSOLVED Geology: 211TMDC Total Depth (ft): 87 USGS 7.5' Quad: PISHKUN RESERVOIR SWL-MP (ft): 22.37 PWS Id: Depth Water Enters (ft): 30 Project: GWCP07 Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 37.600 1.876 Bicarbonate (HCO3) 343.300 5.627 Magnesium (Mg) 23.500 1.934 Carbonate (CO3) 0.000 0.000 Sodium (Na) 83.500 3.632 Chloride (Cl) 17.600 0.496 Potassium (K) 1.790 0.046 Sulfate (SO4) 85.800 1.787 Iron (Fe) <0.005 0.000 Nitrate (as N) 1.08 P 0.077 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.670 0.035 Silica (SiO2) 8.500 Orthophosphate (as P) <0.05 0.000 Total Cations 7.516 Total Anions 8.023 Trace Element Results (µg/L) Aluminum (Al): <2.0 Cesium (Cs): NR Molybdenum (Mo): 13.500 Strontium (Sr): 936.000 Antimony (Sb): <0.1 Chromium (Cr): <0.1 Nickel (Ni): <0.1 Thallium (Tl): <0.1 Arsenic (As): 0.352 Cobalt (Co): <0.1 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 28.500 Copper (Cu): 1.170 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <0.1 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1.0 Boron (B): 69.500 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <0.2 Rubidium (Rb): NR Uranium (U): 5.120 Cadmium (Cd): <0.1 Lithium (Li): 32.500 Silver (Ag): <0.5 Vanadium (V): 0.270 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): 2.280 Zinc (Zn): 0.678 Zirconium (Zr): <0.1 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 430.07 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 604.1 Hardness as CaCO3: 190.61 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 730 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 699 Alkalinity as CaCO3 (mg/L): 281.32 Phosphorus, TD (mg/L): <0.05 Field pH: 7.91 Ryznar Stability Index: 6.841 Field Nitrate (mg/L): 0.000 Lab pH: 8.11 Sodium Adsorption Ratio: 2.6474 Field Dissolved O2 (mg/L): 5.960 Water Temp (°C): 10.9 Langlier Saturation Index: 0.634 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 187 Nitrate + Nitrite (mg/L as N) NR Hydroxide (mg/L as OH): NR 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: Field Remarks: 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.