Ground-Water Information Center Water Quality Report Site Name: DRY CREEK AT FRONTAGE RD. DCFRRD Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 205283 / 265153 Sample Date: 10/8/2013 3:44:00 PM Location (TRS): 01S 05E 17 BB Agency/Sampler: MBMG / MICHALEK, TOM Latitude/Longitude: 45° 45' 28" N 111° 8' 30" W Field Number: 265153 Datum: NAD83 Lab Date: 1/13/2014 2:53:50 PM Altitude: Lab/Analyst: MBMG / TIMMER, JACKIE 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, BWIP4C 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) 51.260 2.558 Bicarbonate (HCO3) 199.550 3.271 Magnesium (Mg) 14.490 1.192 Carbonate (CO3) 7.480 0.268 Sodium (Na) 9.450 0.411 Chloride (Cl) 3.500 0.099 Potassium (K) 2.790 0.071 Sulfate (SO4) 31.460 0.655 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.490 0.035 Manganese (Mn) <0.002 U 0.000 Fluoride (F) 0.270 0.014 Silica (SiO2) 15.550 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.238 Total Anions 4.342 Trace Element Results (µg/L) Aluminum (Al): 4.180 J Cesium (Cs): <0.100 U Molybdenum (Mo): 0.880 Strontium (Sr): 186.350 Antimony (Sb): <0.100 U Chromium (Cr): <0.100 U Nickel (Ni): 2.930 Thallium (Tl): <0.100 U Arsenic (As): 0.470 Cobalt (Co): 0.270 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 67.720 Copper (Cu): <0.040 U 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): 0.490 J Boron (B): 14.640 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U Bromide (Br): <10.000 U Lead (Pb): <0.060 U Rubidium (Rb): 1.390 Uranium (U): 1.680 Cadmium (Cd): <0.100 U Lithium (Li): <2.000 U Silver (Ag): <0.100 U Vanadium (V): 2.200 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.280 J Zinc (Zn): 0.500 J Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 234.27 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 335.75 Hardness as CaCO3: 187.64 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 460 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 367.36 Alkalinity as CaCO3 (mg/L): 175.71 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.98 Ryznar Stability Index: 6.761 Field Nitrate (mg/L): NR Lab pH: 8.33 Sodium Adsorption Ratio: 0.2859 Field Dissolved O2 (mg/L): NR Water Temp (°C): 9.7 Langlier Saturation Index: 0.785 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) 0.530 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.