Ground-Water Information Center Water Quality Report Site Name: THOMPSON, ALVIN  Report Date: 4/24/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2009Q0200 / 9771 Sample Date: 8/25/2008 1:01:00 PM Location (TRS): 01N 05E 29 CDBA Agency/Sampler: MBMG / DCM Latitude/Longitude: 45° 48' 19" N 111° 7' 51" W Field Number: 9771 Datum: NAD83 Lab Date: 10/29/2008 Altitude: 4394.21 Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: GRAB / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR, 110SNGR Total Depth (ft): 39 USGS 7.5' Quad: BELGRADE SWL-MP (ft): 7.73 PWS Id: Depth Water Enters (ft): 39 Project: GWAAMON, GWCP08, BRIDGER,  BWIPMN, GWCP08MON, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 53.300 2.660 Bicarbonate (HCO3) 229.800 3.766 Magnesium (Mg) 16.000 1.317 Carbonate (CO3) 0.000 0.000 Sodium (Na) 10.000 0.435 Chloride (Cl) 16.400 0.463 Potassium (K) 1.710 0.044 Sulfate (SO4) 19.200 0.400 Iron (Fe) <0.003 0.000 Nitrate (as N) 1.39 P 0.099 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.144 0.008 Silica (SiO2) 15.200 Orthophosphate (as P) <0.05 0.000 Total Cations 4.462 Total Anions 4.736 Trace Element Results (µg/L) Aluminum (Al): 1.050 Cesium (Cs): <0.04 Molybdenum (Mo): 0.590 Strontium (Sr): 235.000 Antimony (Sb): <0.11 Chromium (Cr): <0.07 Nickel (Ni): 0.305 Thallium (Tl): <0.04 Arsenic (As): 0.575 Cobalt (Co): 0.101 Niobium (Nb): <0.03 Thorium (Th): <0.1 Barium (Ba): 57.100 Copper (Cu): 2.860 Neodymium (Nd): <0.22 Tin (Sn): <0.06 Beryllium (Be): <0.16 Gallium (Ga): <0.07 Palladium (Pd): 0.414 Titanium (Ti): <0.17 Boron (B): 17.900 Lanthanum (La): <0.85 Praseodymium (Pr): <0.16 Tungsten (W): <0.05 Bromide (Br): <50 Lead (Pb): <0.56 Rubidium (Rb): 1.040 Uranium (U): 1.180 Cadmium (Cd): <0.13 Lithium (Li): 3.170 Silver (Ag): <0.07 Vanadium (V): 0.935 Cerium (Ce): <0.54 Mercury (Hg): NR Selenium (Se): 0.439 Zinc (Zn): 1.460 Zirconium (Zr): <0.11 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 244.61 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 361.31 Hardness as CaCO3: 198.95 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 449 Field Alkalinity as CaCO3 (mg/L): 184 PCP (µg/L): NR Lab Conductivity (µmhos): 442 Alkalinity as CaCO3 (mg/L): 188.64 Phosphorus, TD (mg/L): 0.035 Field pH: 7.56 Ryznar Stability Index: 7.775 Field Nitrate (mg/L): 0.000 Lab pH: 7.22 Sodium Adsorption Ratio: 0.3085 Field Dissolved O2 (mg/L): 1.980 Water Temp (°C): 9.8 Langlier Saturation Index: -0.278 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 109 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.