Ground-Water Information Center Water Quality Report Site Name: THAYER, LARRY  Report Date: 4/16/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2006Q0971 / 191715 Sample Date: 4/12/2006 4:40:00 PM Location (TRS): 01S 06E 17 D Agency/Sampler: GCWQD / ARE Latitude/Longitude: 45° 44' 50" N 111° 0' 16" W Field Number: PAR H Datum: NAD83 Lab Date: 5/3/2006 Altitude: Lab/Analyst: MBMG / WO County/State: GALLATIN / MT Sample Method/Handling: PUMPED / 3120 Site Type: WELL Procedure Type: DISSOLVED Geology: 500GNSC Total Depth (ft): 340 USGS 7.5' Quad: BOZEMAN SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): 300 Project: Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 33.500 1.672 Bicarbonate (HCO3) 263.800 4.324 Magnesium (Mg) 25.500 2.098 Carbonate (CO3) 0.000 0.000 Sodium (Na) 25.300 1.101 Chloride (Cl) 1.470 0.041 Potassium (K) 2.300 0.059 Sulfate (SO4) 23.600 0.492 Iron (Fe) 0.221 0.008 Nitrate (as N) <0.05 0.000 Manganese (Mn) 0.007 0.000 Fluoride (F) 1.330 0.070 Silica (SiO2) 16.600 Orthophosphate (as P) <0.05 0.000 Total Cations 4.956 Total Anions 4.927 Trace Element Results (µg/L) Aluminum (Al): <10 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 490.000 Antimony (Sb): <2 Chromium (Cr): <2 Nickel (Ni): <2 Thallium (Tl): <5 Arsenic (As): <1 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 83.500 Copper (Cu): <2 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1 Boron (B): 83.000 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <2 Rubidium (Rb): NR Uranium (U): <1 Cadmium (Cd): <1 Lithium (Li): 33.800 Silver (Ag): <1 Vanadium (V): <5 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): 1.010 Zinc (Zn): <2 Zirconium (Zr): <2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 259.05 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 393 Hardness as CaCO3: 188.61 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): NR Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 520 Alkalinity as CaCO3 (mg/L): 216.53 Phosphorus, TD (mg/L): <0.05 Field pH: NR Ryznar Stability Index: 7.699 Field Nitrate (mg/L): NR Lab pH: 7.58 Sodium Adsorption Ratio: 0.7921 Field Dissolved O2 (mg/L): NR Water Temp (°C): NR Langlier Saturation Index: -0.059 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.05 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: Field Remarks: WELL FLOWING 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.