Ground-Water Information Center Water Quality Report Site Name: E. GALLATIN RIVER AT SWAMP RD. EGSWRD Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 202226 / 265047 Sample Date: 7/25/2012 11:29:00 AM Location (TRS): 01N 04E 03 DD Agency/Sampler: MBMG / SCOTT, JEFF Latitude/Longitude: 45° 51' 45" N 111° 12' 4" W Field Number: 265047 Datum: NAD83 Lab Date: 10/9/2012 7:18:15 AM Altitude: Lab/Analyst: MBMG / MCGRATH, STEVE County/State: GALLATIN / MT Sample Method/Handling: GRAB / ru:1 ra:0 fu:1 fa:2 Site Type: STREAM Procedure Type: DISSOLVED Geology: Staff Gage Reading: NR USGS 7.5' Quad: Stream Stage: NR PWS Id: Stream Discharge (cfs): NR  -  NR Project: BWIPMN 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) 51.760 2.583 Bicarbonate (HCO3) 231.230 3.790 Magnesium (Mg) 15.880 1.307 Carbonate (CO3) 0.000 0.000 Sodium (Na) 8.710 0.379 Chloride (Cl) 7.720 0.218 Potassium (K) 2.580 0.066 Sulfate (SO4) 17.570 0.366 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.610 0.044 Manganese (Mn) 0.004 J 0.000 Fluoride (F) 0.150 0.008 Silica (SiO2) 14.900 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.342 Total Anions 4.425 Trace Element Results (µg/L) Aluminum (Al): 16.080 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.620 Strontium (Sr): 179.650 Antimony (Sb): <0.100 U Chromium (Cr): 0.380 J Nickel (Ni): 1.200 Thallium (Tl): <0.100 U Arsenic (As): 0.930 Cobalt (Co): 0.290 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 74.780 Copper (Cu): 0.390 J Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): <0.100 U Palladium (Pd): <0.100 U Titanium (Ti): 0.280 J Boron (B): 14.970 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U Bromide (Br): <10.000 U Lead (Pb): <0.040 U Rubidium (Rb): 1.170 Uranium (U): 1.400 Cadmium (Cd): <0.100 U Lithium (Li): <0.400 U Silver (Ag): <0.100 U Vanadium (V): 1.890 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.420 J Zinc (Zn): 0.440 J Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 235.45 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 352.66 Hardness as CaCO3: 194.61 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 401 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 398.9 Alkalinity as CaCO3 (mg/L): 189.46 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.23 Ryznar Stability Index: 6.747 Field Nitrate (mg/L): NR Lab pH: 8.27 Sodium Adsorption Ratio: 0.2807 Field Dissolved O2 (mg/L): NR Water Temp (°C): 23.6 Langlier Saturation Index: 0.762 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): 0.070 Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) 0.660 Hydroxide (mg/L as OH): 0.000 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) <1.000 U 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: 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.