Ground-Water Information Center Water Quality Report Site Name: E. GALLATIN RIVER AT SWAMP RD. EGSWRD Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 201745 / 265047 Sample Date: 5/18/2012 7:50:00 AM Location (TRS): 01N 04E 03 DD Agency/Sampler: BLM / SCOTT, JEFF Latitude/Longitude: 45° 51' 45" N 111° 12' 4" W Field Number: 265047 Datum: NAD83 Lab Date: 8/9/2012 7:08:28 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) 43.900 2.191 Bicarbonate (HCO3) 194.680 3.191 Magnesium (Mg) 12.810 1.054 Carbonate (CO3) 0.000 0.000 Sodium (Na) 7.830 0.341 Chloride (Cl) 5.430 0.153 Potassium (K) 1.960 0.050 Sulfate (SO4) 12.050 0.251 Iron (Fe) 0.013 J 0.000 Nitrate (as N) 0.430 0.031 Manganese (Mn) 0.003 J 0.000 Fluoride (F) 0.130 0.007 Silica (SiO2) 12.330 Orthophosphate (as P) <0.020 U 0.000 Total Cations 3.644 Total Anions 3.633 Trace Element Results (µg/L) Aluminum (Al): 30.430 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.500 Strontium (Sr): 141.480 Antimony (Sb): <0.100 U Chromium (Cr): 0.290 J Nickel (Ni): 1.470 Thallium (Tl): <0.100 U Arsenic (As): 0.660 Cobalt (Co): 0.590 Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 53.860 Copper (Cu): 4.590 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): 0.650 Boron (B): 14.360 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): 0.950 Uranium (U): 1.040 Cadmium (Cd): <0.100 U Lithium (Li): 1.980 J Silver (Ag): <0.100 U Vanadium (V): 1.630 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.170 J Zinc (Zn): 0.310 J Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 191.8 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 290.75 Hardness as CaCO3: 162.34 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 333 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 386.1 Alkalinity as CaCO3 (mg/L): 159.93 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.33 Ryznar Stability Index: 7.297 Field Nitrate (mg/L): NR Lab pH: 8.01 Sodium Adsorption Ratio: 0.2732 Field Dissolved O2 (mg/L): NR Water Temp (°C): 10.6 Langlier Saturation Index: 0.356 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.010 U Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) 0.410 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.