Ground-Water Information Center Water Quality Report Site Name: WEST GALLATIN AT FRONTAGE RD WGFRRD Report Date: 4/25/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2011Q0374 / 257356 Sample Date: 8/27/2010 11:30:00 AM Location (TRS): 01N 04E 19 AC Agency/Sampler: MBMG / SCHAEFFER, MARK Latitude/Longitude: 45° 49' 29" N 111° 16' 16" W Field Number: WGFFRD Datum: NAD83 Lab Date: 12/9/2010 Altitude: Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: GRAB / 4000 Site Type: STREAM Procedure Type: DISSOLVED Geology: Staff Gage Reading: NR USGS 7.5' Quad: MANHATTAN Stream Stage: NR PWS Id: Stream Discharge (cfs): NR  -  NR Project: BWIPMN, BWIP4C, BWIP4CCHEM Stream Width (ft): NR  -  NR Sample Water Use: Sample Depth (ft): NR  -  NR Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 42.000 2.096 Bicarbonate (HCO3) 134.400 2.203 Magnesium (Mg) 9.300 0.765 Carbonate (CO3) 0.000 0.000 Sodium (Na) 4.060 0.177 Chloride (Cl) 1.640 0.046 Potassium (K) 1.670 0.043 Sulfate (SO4) 34.500 0.719 Iron (Fe) <0.002 0.000 Nitrate (as N) 0.066 0.005 Manganese (Mn) 0.004 0.000 Fluoride (F) 0.188 0.010 Silica (SiO2) 10.500 Orthophosphate (as P) <0.1 0.000 Total Cations 3.086 Total Anions 2.982 Trace Element Results (µg/L) Aluminum (Al): <2.0 Cesium (Cs): <0.5 Molybdenum (Mo): 0.881 Strontium (Sr): 208.000 Antimony (Sb): <0.2 Chromium (Cr): <0.2 Nickel (Ni): 0.370 Thallium (Tl): <0.2 Arsenic (As): 0.732 Cobalt (Co): <0.2 Niobium (Nb): <0.2 Thorium (Th): <0.2 Barium (Ba): 52.100 Copper (Cu): <0.5 Neodymium (Nd): <0.2 Tin (Sn): <0.2 Beryllium (Be): <0.2 Gallium (Ga): <0.2 Palladium (Pd): <0.5 Titanium (Ti): 0.400 Boron (B): 8.610 Lanthanum (La): <0.2 Praseodymium (Pr): <0.2 Tungsten (W): <0.2 Bromide (Br): <50 Lead (Pb): <0.2 Rubidium (Rb): 1.190 Uranium (U): 0.690 Cadmium (Cd): <0.2 Lithium (Li): 2.780 Silver (Ag): <0.2 Vanadium (V): 0.983 Cerium (Ce): <0.2 Mercury (Hg): NR Selenium (Se): <0.2 Zinc (Zn): <1.0 Zirconium (Zr): <0.2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 171.31 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 239.3 Hardness as CaCO3: 143.15 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 306 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 287 Alkalinity as CaCO3 (mg/L): 109.9 Phosphorus, TD (mg/L): <0.070 Field pH: 8.42 Ryznar Stability Index: 7.482 Field Nitrate (mg/L): NR Lab pH: 8.19 Sodium Adsorption Ratio: 0.1455 Field Dissolved O2 (mg/L): NR Water Temp (°C): 16.3 Langlier Saturation Index: 0.354 Field Chloride (mg/L): NR Air Temp (°C): 25.9 Nitrite (mg/L as N): <0.05 Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) <0.2 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) <1.0 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: CONTINUOUS GAUGING STATION Q MEASURED. WATER CLEAR AND FLOWING. 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.