Ground-Water Information Center Water Quality Report Site Name: GALLATIN RIVER AT NIXON GULCH RD GRNGRD Report Date: 4/28/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 200766 / 257431 Sample Date: 9/16/2011 4:01:00 PM Location (TRS): 02N 03E 27 CC Agency/Sampler: MBMG / HENNE, BILL Latitude/Longitude: 45° 53' 29" N 111° 20' 13" W Field Number: W.G. UPSTREAM OF CONFLUENCE Datum: NAD83 Lab Date: 12/20/2011 7:36:09 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: NIXON GULCH 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) 42.380 2.115 Bicarbonate (HCO3) 139.860 2.292 Magnesium (Mg) 11.990 0.987 Carbonate (CO3) 9.760 0.350 Sodium (Na) 5.910 0.257 Chloride (Cl) 2.580 0.073 Potassium (K) 2.490 0.064 Sulfate (SO4) 33.690 0.702 Iron (Fe) 0.008 J 0.000 Nitrate (as N) <0.010 U 0.000 Manganese (Mn) 0.003 J 0.000 Fluoride (F) 0.190 0.010 Silica (SiO2) 12.860 Orthophosphate (as P) <0.020 U 0.000 Total Cations 3.428 Total Anions 3.426 Trace Element Results (µg/L) Aluminum (Al): 2.030 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.820 Strontium (Sr): 215.850 Antimony (Sb): <0.100 U Chromium (Cr): 0.210 J Nickel (Ni): 1.760 Thallium (Tl): <0.100 U Arsenic (As): 0.840 Cobalt (Co): 0.290 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 56.440 Copper (Cu): 0.380 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): 0.480 J Boron (B): 8.960 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): 1.230 Uranium (U): 1.190 Cadmium (Cd): <0.100 U Lithium (Li): 3.480 Silver (Ag): <0.100 U Vanadium (V): 1.080 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.250 J Zinc (Zn): 3.850 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 191.34 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 262.38 Hardness as CaCO3: 155.17 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 313 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 330.1 Alkalinity as CaCO3 (mg/L): 131.5 Phosphorus, TD (mg/L): 0.015 J Field pH: 8.82 Ryznar Stability Index: 6.848 Field Nitrate (mg/L): NR Lab pH: 8.66 Sodium Adsorption Ratio: 0.2096 Field Dissolved O2 (mg/L): NR Water Temp (°C): 15.7 Langlier Saturation Index: 0.906 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) 0.560 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.