Ground-Water Information Center Water Quality Report Site Name: SPENCE ROBERT  Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 1994Q0068 / 135580 Sample Date: 7/20/1993 10:30:00 AM Location (TRS): 01N 05E 35 ADBB Agency/Sampler: USGS / SES Latitude/Longitude: 45° 47' 51" N 111° 2' 27" W Field Number: SPEN Datum: NAD27 Lab Date: 1/5/1994 Altitude: 4565 Lab/Analyst: MBMG / SFM County/State: GALLATIN / MT Sample Method/Handling: PUMPED / 3120 Site Type: WELL Procedure Type: DISSOLVED Geology: 120SDMS Total Depth (ft): 80 USGS 7.5' Quad: BOZEMAN SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): 80 Project: USGS, RADON Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 56.600 2.824 Bicarbonate (HCO3) 250.000 4.098 Magnesium (Mg) 17.200 1.415 Carbonate (CO3) 0.000 0.000 Sodium (Na) 10.900 0.474 Chloride (Cl) 3.000 0.085 Potassium (K) 3.400 0.087 Sulfate (SO4) 15.600 0.325 Iron (Fe) <.003 0.000 Nitrate (as N) 3.660 0.261 Manganese (Mn) <.002 0.000 Fluoride (F) 0.780 0.041 Silica (SiO2) 19.700 Orthophosphate (as P) <.1 0.000 Total Cations 4.805 Total Anions 4.809 Trace Element Results (µg/L) Aluminum (Al): <30. Cesium (Cs): NR Molybdenum (Mo): <20. Strontium (Sr): 174.000 Antimony (Sb): NR Chromium (Cr): 6.400 Nickel (Ni): <2. Thallium (Tl): NR Arsenic (As): <1. Cobalt (Co): <2. Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 148.000 Copper (Cu): <2. Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2. Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <10. Boron (B): <30. Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <100. Lead (Pb): <2. Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <2. Lithium (Li): <6. Silver (Ag): <1. Vanadium (V): <5. Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <1. Zinc (Zn): 10.300 Zirconium (Zr): <20. Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 254.96 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 381.81 Hardness as CaCO3: 212.13 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 430 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 444 Alkalinity as CaCO3 (mg/L): 205.04 Phosphorus, TD (mg/L): NR Field pH: 7.89 Ryznar Stability Index: 7.041 Field Nitrate (mg/L): NR Lab pH: 7.83 Sodium Adsorption Ratio: 0.3286 Field Dissolved O2 (mg/L): NR Water Temp (°C): 11 Langlier Saturation Index: 0.395 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 Additional Parameters Phosphate T Dis (mg/L - P) L .2 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: A = Hydride atomic absorption; E = Estimated due to interference; H = Exceeded holding time; J = Estimated quantity above detection limit but below reporting limit; K = Na+K combined; N = Spiked sample recovery not within control limits; 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.