Ground-Water Information Center Water Quality Report Site Name: WEST GALLATIN AT DRY CREEK RD WGDCRD Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 201749 / 257458 Sample Date: 5/17/2012 9:15:00 AM Location (TRS): 01N 03E 12 AB Agency/Sampler: MBMG / SCOTT, JEFF Latitude/Longitude: 45° 51' 36" N 111° 17' 26" W Field Number: 257458 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: MANHATTAN 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) 21.820 1.089 Bicarbonate (HCO3) 89.730 1.471 Magnesium (Mg) 6.350 0.523 Carbonate (CO3) 0.000 0.000 Sodium (Na) 3.830 0.167 Chloride (Cl) 1.110 0.031 Potassium (K) 1.200 0.031 Sulfate (SO4) 13.750 0.286 Iron (Fe) 0.026 0.001 Nitrate (as N) 0.090 0.006 Manganese (Mn) 0.005 J 0.000 Fluoride (F) 0.110 0.006 Silica (SiO2) 10.680 Orthophosphate (as P) <0.020 U 0.000 Total Cations 1.816 Total Anions 1.801 Trace Element Results (µg/L) Aluminum (Al): 31.870 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.500 J Strontium (Sr): 112.500 Antimony (Sb): <0.100 U Chromium (Cr): 0.120 J Nickel (Ni): 0.900 Thallium (Tl): <0.100 U Arsenic (As): 0.560 Cobalt (Co): 0.420 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 32.130 Copper (Cu): 0.520 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): 0.860 Boron (B): 6.920 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): 0.890 Uranium (U): 0.440 J Cadmium (Cd): <0.100 U Lithium (Li): 2.390 Silver (Ag): <0.100 U Vanadium (V): 0.860 Cerium (Ce): 0.120 J Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): <0.200 U Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 103.54 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 149.2 Hardness as CaCO3: 80.62 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 166 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 195.7 Alkalinity as CaCO3 (mg/L): 73.82 Phosphorus, TD (mg/L): <0.030 U Field pH: 4.26 Ryznar Stability Index: 8.836 Field Nitrate (mg/L): NR Lab pH: 7.75 Sodium Adsorption Ratio: 0.1939 Field Dissolved O2 (mg/L): NR Water Temp (°C): 9.2 Langlier Saturation Index: -0.543 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) <0.200 U 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.