Ground-Water Information Center Water Quality Report Site Name: LOWER BRIDGER CR AT KELLY CANYON RD BRIDGE  Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 1983Q0543 / 6908 Sample Date: 6/28/1983 10:30:00 AM Location (TRS): 01S 06E 36 CDDD Agency/Sampler: MBMG / BKM Latitude/Longitude: 45° 42' 1" N 110° 55' 39" W Field Number: BRIDGE1 Datum: NAD27 Lab Date: 9/2/1983 Altitude: Lab/Analyst: MBMG / FNA County/State: GALLATIN / MT Sample Method/Handling: / Site Type: STREAM Procedure Type: DISSOLVED Geology: Staff Gage Reading: NR USGS 7.5' Quad: BOZEMAN PASS 15' Stream Stage: FALLING PWS Id: Stream Discharge (cfs): 55.6  -  CURRENT METER Project: Stream Width (ft): 37  -  STEEL TAPE Sample Water Use: IRRIGATION Sample Depth (ft): 0  -  CURRENT METER Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 49.100 2.450 Bicarbonate (HCO3) 190.000 3.114 Magnesium (Mg) 9.900 0.815 Carbonate (CO3) 5.300 0.190 Sodium (Na) 7.700 0.335 Chloride (Cl) 0.600 0.017 Potassium (K) 0.800 0.020 Sulfate (SO4) 9.800 0.204 Iron (Fe) 0.210 0.008 Nitrate (as N) 0.030 0.002 Manganese (Mn) 0.015 0.001 Fluoride (F) 0.200 0.011 Silica (SiO2) 8.800 Orthophosphate (as P) NR 0.000 Total Cations 3.649 Total Anions 3.538 Trace Element Results (µg/L) Aluminum (Al): 160.000 Cesium (Cs): NR Molybdenum (Mo): <20. Strontium (Sr): 94.000 Antimony (Sb): NR Chromium (Cr): <2. Nickel (Ni): <10. Thallium (Tl): NR Arsenic (As): NR Cobalt (Co): NR Niobium (Nb): NR Thorium (Th): NR Barium (Ba): NR Copper (Cu): <2. Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): NR Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): 5.000 Boron (B): <20. Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): NR Lead (Pb): <40. Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <2. Lithium (Li): <2. Silver (Ag): <2. Vanadium (V): <1. Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): NR Zinc (Zn): 15.000 Zirconium (Zr): <4. Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 186.77 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 283.18 Hardness as CaCO3: 163.35 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 414 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 311.5 Alkalinity as CaCO3 (mg/L): 164.17 Phosphorus, TD (mg/L): NR Field pH: 7.75 Ryznar Stability Index: 6.847 Field Nitrate (mg/L): NR Lab pH: 8.34 Sodium Adsorption Ratio: 0.2724 Field Dissolved O2 (mg/L): NR Water Temp (°C): 10.5 Langlier Saturation Index: 0.746 Field Chloride (mg/L): NR Air Temp (°C): 14 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.