Ground-Water Information Center Water Quality Report Site Name: THOMPSON, ALVIN  Report Date: 4/23/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2004Q0535 / 9771 Sample Date: 6/1/2004 8:52:00 PM Location (TRS): 01N 05E 29 CDBA Agency/Sampler: MBMG / LAR Latitude/Longitude: 45° 48' 19" N 111° 7' 51" W Field Number: M:9771 Datum: NAD83 Lab Date: 6/29/2004 Altitude: 4394.21 Lab/Analyst: MBMG / WO County/State: GALLATIN / MT Sample Method/Handling: PUMPED / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR, 110SNGR Total Depth (ft): 39 USGS 7.5' Quad: BELGRADE SWL-MP (ft): 7.72 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) 63.200 3.154 Bicarbonate (HCO3) 230.900 3.784 Magnesium (Mg) 17.600 1.448 Carbonate (CO3) 0.000 0.000 Sodium (Na) 10.800 0.470 Chloride (Cl) 13.000 0.367 Potassium (K) 1.840 0.047 Sulfate (SO4) 19.700 0.410 Iron (Fe) 0.009 0.000 Nitrate (as N) 1.68 P 0.120 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.067 0.004 Silica (SiO2) 17.900 Orthophosphate (as P) <0.05 0.000 Total Cations 5.125 Total Anions 4.685 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 258.000 Antimony (Sb): <2 Chromium (Cr): 2.780 Nickel (Ni): 2.430 Thallium (Tl): <5 Arsenic (As): <1 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 67.100 Copper (Cu): 2.300 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1 Boron (B): <30 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <2 Rubidium (Rb): NR Uranium (U): 7.240 Cadmium (Cd): <1 Lithium (Li): 5.420 Silver (Ag): <1 Vanadium (V): <5 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <1 Zinc (Zn): 2.110 Zirconium (Zr): <2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 258.6 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 375.8 Hardness as CaCO3: 230.25 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 463 Field Alkalinity as CaCO3 (mg/L): 280 PCP (µg/L): NR Lab Conductivity (µmhos): 453 Alkalinity as CaCO3 (mg/L): 189.46 Phosphorus, TD (mg/L): <0.05 Field pH: 7.66 Ryznar Stability Index: 6.944 Field Nitrate (mg/L): 1.000 Lab pH: 7.9 Sodium Adsorption Ratio: 0.3154 Field Dissolved O2 (mg/L): NR Water Temp (°C): 8.6 Langlier Saturation Index: 0.478 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): NR 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: GREEN ALGAE PRESENT 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.