Ground-Water Information Center Water Quality Report Site Name: US GEOLOGICAL SURVEY - JOHN LEWTON  Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 238902 / 133174 Sample Date: 5/23/2019 12:55:00 PM Location (TRS): 01S 04E 09 BAAA Agency/Sampler: MBMG / MASON, DONALD Latitude/Longitude: 45° 46' 20" N 111° 14' 16" W Field Number: 133174 Datum: NAD83 Lab Date: 7/17/2019 9:03:26 AM Altitude: 4436.58 Lab/Analyst: MBMG / TIMMER, JACKIE County/State: GALLATIN / MT Sample Method/Handling: GRAB / ru:1 ra:0 fu:2 fa:2 Site Type: WELL Procedure Type: DISSOLVED Geology: 110SNGR, 111SNGR Total Depth (ft): 97.5 USGS 7.5' Quad: BELGRADE SWL-MP (ft): 23.4 PWS Id: Depth Water Enters (ft): NR Project: GWAAMON, GWCP08, NGWMN-MONTANA,  GWCP08MON, BWIP4C, BWIP4CCHEM, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 37.480 1.870 Bicarbonate (HCO3) 143.690 2.355 Magnesium (Mg) 11.660 0.960 Carbonate (CO3) 0.000 0.000 Sodium (Na) 4.740 0.206 Chloride (Cl) 2.420 0.068 Potassium (K) 1.400 0.036 Sulfate (SO4) 42.550 0.886 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.190 0.014 Manganese (Mn) 0.004 J 0.000 Fluoride (F) 0.250 0.013 Silica (SiO2) 13.920 Orthophosphate (as P) 0.030 J 0.000 Total Cations 3.077 Total Anions 3.336 Trace Element Results (µg/L) Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 1.460 Strontium (Sr): 188.090 Antimony (Sb): <0.100 U Chromium (Cr): <0.100 U Nickel (Ni): <0.100 U Thallium (Tl): <0.100 U Arsenic (As): 0.420 Cobalt (Co): <0.100 U Niobium (Nb): 0.220 J Thorium (Th): <0.100 U Barium (Ba): 43.740 Copper (Cu): <0.500 U Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): 2.610 Palladium (Pd): <0.100 U Titanium (Ti): 0.630 Boron (B): 6.810 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U Bromide (Br): <10.000 U Lead (Pb): <0.060 U Rubidium (Rb): 0.870 Uranium (U): 1.120 Cadmium (Cd): <0.100 U Lithium (Li): 2.940 J Silver (Ag): <0.100 U Vanadium (V): 0.730 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): <0.500 U Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 185.08 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 258.14 Hardness as CaCO3: 141.58 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 291 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 303.74 Alkalinity as CaCO3 (mg/L): 118.1 Phosphorus, TD (mg/L): <0.030 U Field pH: 7.82 Ryznar Stability Index: 8.378 Field Nitrate (mg/L): 0.000 Lab pH: 7.33 Sodium Adsorption Ratio: 0.1829 Field Dissolved O2 (mg/L): 5.980 Water Temp (°C): 7.2 Langlier Saturation Index: -0.524 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.010 U Field Redox (mV): 80.6 Nitrate + Nitrite (mg/L as N) <0.200 U 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: 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.