Ground-Water Information Center Water Quality Report Site Name: CITY OF BELGRADE MW-02 Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2009Q0668 / 190102 Sample Date: 5/14/2009 Location (TRS): 01N 04E 36 ACCD Agency/Sampler: MBMG / GITC Latitude/Longitude: 45° 47' 42" N 111° 10' 3" W Field Number: GLWQD-136 Datum: NAD83 Lab Date: 7/7/2009 Altitude: 4407 Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: GRAB / 6000 Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR Total Depth (ft): 50 USGS 7.5' Quad: BELGRADE SWL-MP (ft): 31.55 PWS Id: Depth Water Enters (ft): 25 Project: GLWQDPHARM, GWCP08 Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 64.600 3.224 Bicarbonate (HCO3) 321.500 5.269 Magnesium (Mg) 18.700 1.539 Carbonate (CO3) 0.000 0.000 Sodium (Na) 24.400 1.061 Chloride (Cl) 13.220 0.373 Potassium (K) 4.370 0.112 Sulfate (SO4) <25.0 0.000 Iron (Fe) <0.043 0.000 Nitrate (as N) <2.46 P 0.000 Manganese (Mn) <0.031 0.000 Fluoride (F) <0.5 0.000 Silica (SiO2) 28.100 Orthophosphate (as P) 0.800 0.025 Total Cations 5.947 Total Anions 5.668 Trace Element Results (µg/L) Aluminum (Al): <7.60 Cesium (Cs): <0.04 Molybdenum (Mo): 0.357 Strontium (Sr): 246.000 Antimony (Sb): <0.05 Chromium (Cr): <0.04 Nickel (Ni): 0.340 Thallium (Tl): <0.03 Arsenic (As): 3.200 Cobalt (Co): 0.189 Niobium (Nb): <0.04 Thorium (Th): <0.02 Barium (Ba): 189.000 Copper (Cu): 2.180 Neodymium (Nd): <0.05 Tin (Sn): <0.04 Beryllium (Be): <0.20 Gallium (Ga): <0.05 Palladium (Pd): <0.10 Titanium (Ti): 0.464 Boron (B): 43.100 Lanthanum (La): 0.026 Praseodymium (Pr): <0.02 Tungsten (W): <0.05 Bromide (Br): <500 Lead (Pb): <0.15 Rubidium (Rb): 1.720 Uranium (U): 1.650 Cadmium (Cd): <0.05 Lithium (Li): 4.490 Silver (Ag): <0.04 Vanadium (V): 2.440 Cerium (Ce): 0.034 Mercury (Hg): NR Selenium (Se): 0.214 Zinc (Zn): 46.600 Zirconium (Zr): <0.05 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 311.97 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 475.35 Hardness as CaCO3: 238.28 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 572 Field Alkalinity as CaCO3 (mg/L): 244 PCP (µg/L): NR Lab Conductivity (µmhos): 563 Alkalinity as CaCO3 (mg/L): 264.1 Phosphorus, TD (mg/L): 0.581 Field pH: 7.5 Ryznar Stability Index: 6.936 Field Nitrate (mg/L): NR Lab pH: 7.6 Sodium Adsorption Ratio: 0.6766 Field Dissolved O2 (mg/L): 3.550 Water Temp (°C): 9.58 Langlier Saturation Index: 0.332 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 185.1 Nitrate + Nitrite (mg/L as N) NR Hydroxide (mg/L as OH): NR Lab, Dissolved Organic Carbon (mg/L): 0.950 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) NR 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: WELL WAS SAMPLED WITH A 1L BAILER, 200 BAILER VOLUMES PURGED PRIOR TO SAMPLING 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.