Ground-Water Information Center Water Quality Report Site Name: THOMPSON CARL  Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2000Q0502 / 67257 Sample Date: 11/9/1999 7:45:00 AM Location (TRS): 12N 20W 12 BBAD Agency/Sampler: MBMG / CARSTARPHEN, CAMELA Latitude/Longitude: 46° 49' 5" N 114° 3' 34" W Field Number: 67257 Datum: NAD27 Lab Date: 1/31/2000 Altitude: 3135 Lab/Analyst: MBMG / JMC County/State: MISSOULA / MT Sample Method/Handling: PUMPED / 4220 Site Type: WELL Procedure Type: DISSOLVED Geology: 111ALVM Total Depth (ft): 44.5 USGS 7.5' Quad: SW MISSOULA SWL-MP (ft): 18.85 PWS Id: Depth Water Enters (ft): 44.5 Project: GWCP04 Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 101.000 5.040 Bicarbonate (HCO3) 368.200 6.035 Magnesium (Mg) 30.900 2.543 Carbonate (CO3) 0.000 0.000 Sodium (Na) 50.300 2.188 Chloride (Cl) 91.360 2.577 Potassium (K) 2.750 0.070 Sulfate (SO4) 40.800 0.850 Iron (Fe) <.025 0.000 Nitrate (as N) 11.4 P 0.814 Manganese (Mn) <.005 0.000 Fluoride (F) <.5 0.000 Silica (SiO2) 34.300 Orthophosphate (as P) <.5 0.000 Total Cations 9.860 Total Anions 10.276 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 499.000 Antimony (Sb): <2 Chromium (Cr): 2.120 Nickel (Ni): 6.480 Thallium (Tl): <5 Arsenic (As): 2.240 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 497.000 Copper (Cu): 4.190 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <50 Boron (B): 69.800 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): 500.000 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): 1.090 Zinc (Zn): 30.800 Zirconium (Zr): <25 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 532.22 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 718.94 Hardness as CaCO3: 379.38 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 850 Field Alkalinity as CaCO3 (mg/L): 313 PCP (µg/L): NR Lab Conductivity (µmhos): 900 Alkalinity as CaCO3 (mg/L): 301.82 Phosphorus, TD (mg/L): <.5 Field pH: 6.9 Ryznar Stability Index: 6.672 Field Nitrate (mg/L): 5.000 Lab pH: 7.36 Sodium Adsorption Ratio: 1.117 Field Dissolved O2 (mg/L): NR Water Temp (°C): 10.9 Langlier Saturation Index: 0.344 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 182 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.