Ground-Water Information Center Water Quality Report Site Name: MICHEL SAM  Report Date: 4/25/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2008Q0124 / 122903 Sample Date: 8/16/2007 5:20:00 PM Location (TRS): 23N 06W 18 CDAB Agency/Sampler: MBMG / MASON, DONALD C. Latitude/Longitude: 47° 44' 35" N 112° 25' 32" W Field Number: 122903 Datum: NAD83 Lab Date: 9/17/2007 Altitude: 4265 Lab/Analyst: MBMG / WO County/State: TETON / MT Sample Method/Handling: GRAB / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 211TMDC Total Depth (ft): 220 USGS 7.5' Quad: PISHKUN RESERVOIR SWL-MP (ft): 22.9 PWS Id: Depth Water Enters (ft): 40 Project: GWCP07 Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 32.500 1.622 Bicarbonate (HCO3) 306.500 5.024 Magnesium (Mg) 18.600 1.531 Carbonate (CO3) 0.000 0.000 Sodium (Na) 66.500 2.893 Chloride (Cl) 18.100 0.511 Potassium (K) 1.340 0.034 Sulfate (SO4) 45.700 0.952 Iron (Fe) <0.005 0.000 Nitrate (as N) 1.03 P 0.074 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.703 0.037 Silica (SiO2) 8.730 Orthophosphate (as P) <0.05 0.000 Total Cations 6.104 Total Anions 6.597 Trace Element Results (µg/L) Aluminum (Al): <2.0 Cesium (Cs): NR Molybdenum (Mo): 9.440 Strontium (Sr): 792.000 Antimony (Sb): <0.1 Chromium (Cr): <0.1 Nickel (Ni): <0.1 Thallium (Tl): <0.1 Arsenic (As): 0.541 Cobalt (Co): <0.1 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 55.500 Copper (Cu): 0.403 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <0.1 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1.0 Boron (B): 70.400 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <0.2 Rubidium (Rb): NR Uranium (U): 3.180 Cadmium (Cd): <0.1 Lithium (Li): 26.600 Silver (Ag): <0.5 Vanadium (V): 0.642 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): 1.610 Zinc (Zn): 5.860 Zirconium (Zr): <0.1 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 344.34 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 500.11 Hardness as CaCO3: 157.71 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 606 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 588 Alkalinity as CaCO3 (mg/L): 251.79 Phosphorus, TD (mg/L): <0.05 Field pH: 7.88 Ryznar Stability Index: 7.134 Field Nitrate (mg/L): 0.000 Lab pH: 8.04 Sodium Adsorption Ratio: 2.3215 Field Dissolved O2 (mg/L): 4.840 Water Temp (°C): 9.8 Langlier Saturation Index: 0.453 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 334 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.