Ground-Water Information Center Water Quality Report Site Name: MAXWELL DONALD W III  Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2008Q0357 / 240109 Sample Date: 2/28/2008 Location (TRS): 01S 04E 03 BCC Agency/Sampler: / ARE Latitude/Longitude: 45° 46' 51" N 111° 13' 30" W Field Number: 34 WILDHORSE Datum: NAD83 Lab Date: 3/25/2008 Altitude: Lab/Analyst: MBMG / WO County/State: GALLATIN / MT Sample Method/Handling: / Site Type: WELL Procedure Type: DISSOLVED Geology: 120SNGR Total Depth (ft): 300 USGS 7.5' Quad: SWL-MP (ft): 54 PWS Id: Depth Water Enters (ft): 298 Project: RIVERROCK, GALVAL_GW319 Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 59.200 2.954 Bicarbonate (HCO3) 224.200 3.675 Magnesium (Mg) 15.900 1.308 Carbonate (CO3) 0.000 0.000 Sodium (Na) 6.310 0.274 Chloride (Cl) 3.390 0.096 Potassium (K) 2.380 0.061 Sulfate (SO4) 31.600 0.658 Iron (Fe) 0.014 0.001 Nitrate (as N) 1.10 P 0.079 Manganese (Mn) 0.002 0.000 Fluoride (F) 0.172 0.009 Silica (SiO2) 18.100 Orthophosphate (as P) <0.05 0.000 Total Cations 4.608 Total Anions 4.516 Trace Element Results (µg/L) Aluminum (Al): <1.0 Cesium (Cs): <0.1 Molybdenum (Mo): <1.0 Strontium (Sr): 371.000 Antimony (Sb): <0.1 Chromium (Cr): <0.1 Nickel (Ni): 0.793 Thallium (Tl): <0.1 Arsenic (As): 0.396 Cobalt (Co): 0.114 Niobium (Nb): <0.1 Thorium (Th): <0.05 Barium (Ba): 89.200 Copper (Cu): 0.667 Neodymium (Nd): <0.1 Tin (Sn): <0.1 Beryllium (Be): <0.1 Gallium (Ga): <0.1 Palladium (Pd): 0.980 Titanium (Ti): 1.050 Boron (B): 10.300 Lanthanum (La): <0.1 Praseodymium (Pr): <0.1 Tungsten (W): <1.0 Bromide (Br): <100 Lead (Pb): <0.2 Rubidium (Rb): 1.350 Uranium (U): 1.470 Cadmium (Cd): <0.1 Lithium (Li): 6.050 Silver (Ag): <1.0 Vanadium (V): 0.649 Cerium (Ce): <0.1 Mercury (Hg): NR Selenium (Se): <0.5 Zinc (Zn): 5.720 Zirconium (Zr): <0.1 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 246.45 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 360.11 Hardness as CaCO3: 213.27 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 427 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 420 Alkalinity as CaCO3 (mg/L): 183.72 Phosphorus, TD (mg/L): <0.01 Field pH: 7.26 Ryznar Stability Index: 7.467 Field Nitrate (mg/L): NR Lab pH: 7.46 Sodium Adsorption Ratio: 0.1788 Field Dissolved O2 (mg/L): NR Water Temp (°C): 10.3 Langlier Saturation Index: -0.004 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.