Ground-Water Information Center Water Quality Report Site Name: EAST GALLATIN AT GALLATIN RIVER RANCH EGGRR Report Date: 4/29/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2011Q0710 / 257433 Sample Date: 10/22/2010 9:40:00 AM Location (TRS): 02N 03E 27 DC Agency/Sampler: MBMG / HENNE, WILLIAM Latitude/Longitude: 45° 53' 31" N 111° 19' 55" W Field Number: EGGRR Datum: NAD83 Lab Date: 2/25/2011 Altitude: Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: / 4000 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) 58.500 2.919 Bicarbonate (HCO3) 239.000 3.917 Magnesium (Mg) 16.600 1.366 Carbonate (CO3) 0.000 0.000 Sodium (Na) 9.160 0.398 Chloride (Cl) 7.550 0.213 Potassium (K) 2.850 0.073 Sulfate (SO4) 23.040 0.480 Iron (Fe) <0.002 0.000 Nitrate (as N) 0.617 0.044 Manganese (Mn) 0.004 0.000 Fluoride (F) 0.171 0.009 Silica (SiO2) 12.300 Orthophosphate (as P) <0.1 0.000 Total Cations 4.763 Total Anions 4.663 Trace Element Results (µg/L) Aluminum (Al): <2.0 Cesium (Cs): <0.5 Molybdenum (Mo): 0.693 Strontium (Sr): 201.000 Antimony (Sb): <0.2 Chromium (Cr): 0.329 Nickel (Ni): 0.480 Thallium (Tl): <0.2 Arsenic (As): 0.775 Cobalt (Co): 0.783 Niobium (Nb): <0.5 Thorium (Th): <0.2 Barium (Ba): 73.800 Copper (Cu): <0.5 Neodymium (Nd): <0.2 Tin (Sn): <0.5 Beryllium (Be): <0.2 Gallium (Ga): <0.2 Palladium (Pd): <0.5 Titanium (Ti): 0.213 Boron (B): 16.600 Lanthanum (La): <0.2 Praseodymium (Pr): <0.2 Tungsten (W): <0.2 Bromide (Br): <50 Lead (Pb): <0.2 Rubidium (Rb): 1.290 Uranium (U): 1.830 Cadmium (Cd): <0.2 Lithium (Li): 2.340 Silver (Ag): <0.2 Vanadium (V): 1.760 Cerium (Ce): <0.2 Mercury (Hg): NR Selenium (Se): 0.241 Zinc (Zn): 1.720 Zirconium (Zr): <0.2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 248.84 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 370.1 Hardness as CaCO3: 214.4 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): NR Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 401 Alkalinity as CaCO3 (mg/L): 196.02 Phosphorus, TD (mg/L): <0.025 Field pH: NR Ryznar Stability Index: 6.671 Field Nitrate (mg/L): NR Lab pH: 8.21 Sodium Adsorption Ratio: 0.2675 Field Dissolved O2 (mg/L): NR Water Temp (°C): NR Langlier Saturation Index: 0.769 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.05 Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) 0.631 P 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) 1.34 P 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.