Ground-Water Information Center Water Quality Report Site Name: GLWQD - MDOT VISITOR CENTER  Report Date: 5/10/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2009Q0300 / 241692 Sample Date: 9/11/2008 Location (TRS): 01S 05E 35 AADB Agency/Sampler: GCWQD / LYON, BAKER Latitude/Longitude: 45° 42' 45" N 111° 3' 51" W Field Number: Datum: NAD83 Lab Date: 11/14/2008 Altitude: 4669.15 Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: PUMPED / 0 Site Type: WELL Procedure Type: DISSOLVED Geology: 120SNGR Total Depth (ft): 8.9 USGS 7.5' Quad: BOZEMAN SWL-MP (ft): 9.62 PWS Id: Depth Water Enters (ft): NR Project: GWAAMON, GWCP08, GLWQDPHARM,  BWIP4CSWL1, GWCP08MON, BWIP4C, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 88.200 4.401 Bicarbonate (HCO3) 424.000 6.949 Magnesium (Mg) 27.300 2.247 Carbonate (CO3) 0.000 0.000 Sodium (Na) 31.700 1.379 Chloride (Cl) 37.600 1.061 Potassium (K) 6.760 0.173 Sulfate (SO4) <25.0 0.000 Iron (Fe) 0.012 0.000 Nitrate (as N) 2.38 P 0.170 Manganese (Mn) 0.009 0.000 Fluoride (F) <0.5 0.000 Silica (SiO2) 23.600 Orthophosphate (as P) <0.5 0.000 Total Cations 8.210 Total Anions 8.180 Trace Element Results (µg/L) Aluminum (Al): <0.95 Cesium (Cs): <0.04 Molybdenum (Mo): 1.480 Strontium (Sr): 299.000 Antimony (Sb): <0.11 Chromium (Cr): 0.644 Nickel (Ni): 0.437 Thallium (Tl): <0.04 Arsenic (As): 1.520 Cobalt (Co): 0.167 Niobium (Nb): <0.3 Thorium (Th): <0.005 Barium (Ba): 132.000 Copper (Cu): 1.000 Neodymium (Nd): <0.22 Tin (Sn): <0.06 Beryllium (Be): <0.16 Gallium (Ga): <0.07 Palladium (Pd): 0.586 Titanium (Ti): <0.17 Boron (B): 27.500 Lanthanum (La): <0.85 Praseodymium (Pr): <0.16 Tungsten (W): <0.05 Bromide (Br): <500 Lead (Pb): <0.56 Rubidium (Rb): 3.520 Uranium (U): 9.680 Cadmium (Cd): <0.13 Lithium (Li): 4.310 Silver (Ag): <0.07 Vanadium (V): 5.880 Cerium (Ce): <0.54 Mercury (Hg): NR Selenium (Se): 1.040 Zinc (Zn): 21.400 Zirconium (Zr): 0.152 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 425.39 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 640.52 Hardness as CaCO3: 332.6 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 644 Field Alkalinity as CaCO3 (mg/L): 356 PCP (µg/L): NR Lab Conductivity (µmhos): 729 Alkalinity as CaCO3 (mg/L): 347.75 Phosphorus, TD (mg/L): 0.035 Field pH: 7.03 Ryznar Stability Index: 6.697 Field Nitrate (mg/L): NR Lab pH: 7.33 Sodium Adsorption Ratio: 0.7635 Field Dissolved O2 (mg/L): 4.500 Water Temp (°C): 14.91 Langlier Saturation Index: 0.317 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 7.2 Nitrate + Nitrite (mg/L as N) NR Hydroxide (mg/L as OH): NR Lab, Dissolved Organic Carbon (mg/L): 1.470 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: BAILED WELL UNTIL WATER CLEARED - APPROX 10 GAL. GALLATIN COUNTY PHARMA SAMPLE. 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.