Ground-Water Information Center Water Quality Report Site Name: UNIVERSITY OF MONTANA  Report Date: 4/29/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2000Q0798 / 121525 Sample Date: 4/5/2000 9:30:00 AM Location (TRS): 13N 19W 27 ACBC Agency/Sampler: MBMG / CARSTARPHEN, CAMELA Latitude/Longitude: 46° 51' 28" N 113° 59' 6" W Field Number: 121525 Datum: NAD27 Lab Date: 6/15/2000 Altitude: 3215 Lab/Analyst: MBMG / JMC County/State: MISSOULA / MT Sample Method/Handling: PUMPED / 4220 Site Type: WELL Procedure Type: DISSOLVED Geology: 112ALVM Total Depth (ft): 198.2 USGS 7.5' Quad: SOUTHEAST MISSOULA SWL-MP (ft): 82.99 PWS Id: Depth Water Enters (ft): 110 Project: GWCP04 Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 42.500 2.121 Bicarbonate (HCO3) 186.900 3.063 Magnesium (Mg) 11.100 0.913 Carbonate (CO3) 0.000 0.000 Sodium (Na) 5.660 0.246 Chloride (Cl) 3.360 0.095 Potassium (K) 1.800 0.046 Sulfate (SO4) 20.200 0.421 Iron (Fe) <.025 0.000 Nitrate (as N) <.5 P 0.000 Manganese (Mn) <.005 0.000 Fluoride (F) 0.138 0.007 Silica (SiO2) 13.900 Orthophosphate (as P) 0.077 0.002 Total Cations 3.330 Total Anions 3.589 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 140.000 Antimony (Sb): <2 Chromium (Cr): <2 Nickel (Ni): 8.730 Thallium (Tl): <5 Arsenic (As): 1.260 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 187.000 Copper (Cu): <2 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <50 Boron (B): <30 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <2 Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <2 Lithium (Li): <25 Silver (Ag): <1 Vanadium (V): <5 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <1 Zinc (Zn): 11.500 Zirconium (Zr): <25 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 190.73 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 285.61 Hardness as CaCO3: 151.81 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 305 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 339 Alkalinity as CaCO3 (mg/L): 153.37 Phosphorus, TD (mg/L): <.5 Field pH: 7.6 Ryznar Stability Index: 7.692 Field Nitrate (mg/L): NR Lab pH: 7.68 Sodium Adsorption Ratio: 0.2119 Field Dissolved O2 (mg/L): NR Water Temp (°C): 10.2 Langlier Saturation Index: -0.006 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: 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.