Ground-Water Information Center Water Quality Report Site Name: SVEINSON DOUG  Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2008Q0533 / 170443 Sample Date: 5/28/2008 Location (TRS): 01S 04E 03 BC Agency/Sampler: MBMG / TC Latitude/Longitude: 45° 46' 55" N 111° 13' 26" W Field Number: 20 WILDHORSE TRAIL Datum: NAD83 Lab Date: 7/7/2008 Altitude: Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: GRAB / 1111 Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR Total Depth (ft): 83 USGS 7.5' Quad: SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): 78.5 Project: RIVERROCK Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 51.200 2.555 Bicarbonate (HCO3) 206.900 3.391 Magnesium (Mg) 14.800 1.218 Carbonate (CO3) 0.000 0.000 Sodium (Na) 6.010 0.261 Chloride (Cl) 2.790 0.079 Potassium (K) 2.360 0.060 Sulfate (SO4) 33.500 0.698 Iron (Fe) <0.005 0.000 Nitrate (as N) 1.65 P 0.118 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.150 0.008 Silica (SiO2) 17.400 Orthophosphate (as P) <0.05 0.000 Total Cations 4.104 Total Anions 4.293 Trace Element Results (µg/L) Aluminum (Al): <2.0 Cesium (Cs): <0.1 Molybdenum (Mo): <1.0 Strontium (Sr): 347.000 Antimony (Sb): <0.1 Chromium (Cr): <0.2 Nickel (Ni): <0.1 Thallium (Tl): <0.1 Arsenic (As): 0.749 Cobalt (Co): <0.1 Niobium (Nb): <0.1 Thorium (Th): <0.05 Barium (Ba): 78.900 Copper (Cu): 3.090 Neodymium (Nd): <0.1 Tin (Sn): <0.1 Beryllium (Be): <0.1 Gallium (Ga): <0.1 Palladium (Pd): 0.550 Titanium (Ti): 0.417 Boron (B): 10.000 Lanthanum (La): <0.1 Praseodymium (Pr): <0.1 Tungsten (W): <0.5 Bromide (Br): <100 Lead (Pb): 1.670 Rubidium (Rb): 1.390 Uranium (U): 1.240 Cadmium (Cd): <0.1 Lithium (Li): 6.140 Silver (Ag): <0.5 Vanadium (V): 0.910 Cerium (Ce): <0.1 Mercury (Hg): NR Selenium (Se): 0.896 Zinc (Zn): 0.906 Zirconium (Zr): <0.1 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 229.97 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 335 Hardness as CaCO3: 188.76 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): NR Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 367 Alkalinity as CaCO3 (mg/L): 169.78 Phosphorus, TD (mg/L): 0.012 Field pH: NR Ryznar Stability Index: 8.082 Field Nitrate (mg/L): NR Lab pH: 7.04 Sodium Adsorption Ratio: 0.19 Field Dissolved O2 (mg/L): NR Water Temp (°C): NR Langlier Saturation Index: -0.521 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) NR Hydroxide (mg/L as OH): NR 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) 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: 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.