Ground-Water Information Center Water Quality Report Site Name: EAST GALLATIN AT DRY CREEK ROAD EGDCRD Report Date: 4/18/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 202227 / 264841 Sample Date: 7/25/2012 10:11:00 AM Location (TRS): 01N 04E 13 DA Agency/Sampler: MBMG / SCOTT, JEFF Latitude/Longitude: 45° 50' 16" N 111° 9' 34" W Field Number: 264841 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: BELGRADE 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) 52.740 2.632 Bicarbonate (HCO3) 236.360 3.874 Magnesium (Mg) 16.490 1.357 Carbonate (CO3) 0.000 0.000 Sodium (Na) 10.820 0.471 Chloride (Cl) 10.730 0.303 Potassium (K) 2.640 0.068 Sulfate (SO4) 18.520 0.386 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.670 0.048 Manganese (Mn) 0.006 J 0.000 Fluoride (F) 0.180 0.009 Silica (SiO2) 13.850 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.536 Total Anions 4.620 Trace Element Results (µg/L) Aluminum (Al): 22.650 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.820 Strontium (Sr): 190.310 Antimony (Sb): <0.100 U Chromium (Cr): 0.260 J Nickel (Ni): 1.450 Thallium (Tl): <0.100 U Arsenic (As): 0.920 Cobalt (Co): 0.280 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 62.160 Copper (Cu): 0.500 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): 0.340 J Boron (B): 19.270 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): 1.300 Cadmium (Cd): <0.100 U Lithium (Li): 0.850 J Silver (Ag): <0.100 U Vanadium (V): 1.900 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.530 Zinc (Zn): 1.060 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 244.51 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 364.25 Hardness as CaCO3: 199.56 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 431 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 437.5 Alkalinity as CaCO3 (mg/L): 193.56 Phosphorus, TD (mg/L): 0.030 J Field pH: 8.52 Ryznar Stability Index: 6.982 Field Nitrate (mg/L): NR Lab pH: 8 Sodium Adsorption Ratio: 0.3388 Field Dissolved O2 (mg/L): NR Water Temp (°C): 17.3 Langlier Saturation Index: 0.509 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) 0.680 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) 1.110 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.