Ground-Water Information Center Water Quality Report Site Name: E. GALLATIN RIVER AT W. DRY CREEK RD. EGWDCRD Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 202224 / 265053 Sample Date: 7/25/2012 1:40:00 PM Location (TRS): 01N 04E 04 AD Agency/Sampler: MBMG / SCOTT, JEFF Latitude/Longitude: 45° 52' 26" N 111° 13' 56" W Field Number: 265053 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) 50.720 2.531 Bicarbonate (HCO3) 208.700 3.421 Magnesium (Mg) 15.720 1.294 Carbonate (CO3) 1.360 0.049 Sodium (Na) 8.440 0.367 Chloride (Cl) 7.730 0.218 Potassium (K) 2.990 0.076 Sulfate (SO4) 18.130 0.378 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.540 0.039 Manganese (Mn) 0.004 J 0.000 Fluoride (F) 0.150 0.008 Silica (SiO2) 15.080 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.276 Total Anions 4.111 Trace Element Results (µg/L) Aluminum (Al): 13.770 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.630 Strontium (Sr): 183.620 Antimony (Sb): <0.100 U Chromium (Cr): 0.360 J Nickel (Ni): 1.200 Thallium (Tl): <0.100 U Arsenic (As): 0.970 Cobalt (Co): 1.280 Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 76.710 Copper (Cu): 3.490 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): 0.300 J Boron (B): 16.150 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): 1.210 Uranium (U): 1.430 Cadmium (Cd): <0.100 U Lithium (Li): <0.400 U Silver (Ag): <0.100 U Vanadium (V): 1.940 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.360 J Zinc (Zn): 1.530 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 223.41 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 329.46 Hardness as CaCO3: 191.35 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 396 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 398.5 Alkalinity as CaCO3 (mg/L): 173.08 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.23 Ryznar Stability Index: 6.803 Field Nitrate (mg/L): NR Lab pH: 8.31 Sodium Adsorption Ratio: 0.2517 Field Dissolved O2 (mg/L): NR Water Temp (°C): 18.8 Langlier Saturation Index: 0.753 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) 0.890 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.