Ground-Water Information Center Water Quality Report Site Name: EAST GALLATIN AT GALLATIN RIVER RANCH EGGRR Report Date: 4/28/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 202220 / 257433 Sample Date: 7/24/2012 11:37:00 AM Location (TRS): 02N 03E 27 DC Agency/Sampler: MBMG / SCOTT, JEFF Latitude/Longitude: 45° 53' 31" N 111° 19' 55" W Field Number: 257433 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: 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) 50.660 2.528 Bicarbonate (HCO3) 221.570 3.632 Magnesium (Mg) 17.080 1.406 Carbonate (CO3) 2.030 0.073 Sodium (Na) 9.470 0.412 Chloride (Cl) 7.070 0.199 Potassium (K) 2.940 0.075 Sulfate (SO4) 18.620 0.388 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.440 0.031 Manganese (Mn) 0.006 J 0.000 Fluoride (F) 0.160 0.008 Silica (SiO2) 14.620 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.429 Total Anions 4.331 Trace Element Results (µg/L) Aluminum (Al): 17.870 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.730 Strontium (Sr): 186.680 Antimony (Sb): <0.100 U Chromium (Cr): 0.330 J Nickel (Ni): 1.930 Thallium (Tl): <0.100 U Arsenic (As): 1.220 Cobalt (Co): 0.320 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 95.690 Copper (Cu): 1.030 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): 0.320 J Boron (B): 17.890 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): 1.300 Uranium (U): 1.410 Cadmium (Cd): <0.100 U Lithium (Li): 0.880 J Silver (Ag): <0.100 U Vanadium (V): 2.140 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.350 J Zinc (Zn): 0.830 J Zirconium (Zr): 0.110 J Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 232.12 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 344.76 Hardness as CaCO3: 196.8 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 387 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 384.1 Alkalinity as CaCO3 (mg/L): 185.41 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.74 Ryznar Stability Index: 6.714 Field Nitrate (mg/L): NR Lab pH: 8.34 Sodium Adsorption Ratio: 0.2792 Field Dissolved O2 (mg/L): NR Water Temp (°C): 19.8 Langlier Saturation Index: 0.813 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) 0.480 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.