Ground-Water Information Center Water Quality Report Site Name: MARTINSDALE COLONY  Report Date: 4/25/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2003Q0343 / 154303 Sample Date: 8/26/2002 2:30:00 PM Location (TRS): 08N 12E 05 AC Agency/Sampler: MBMG / LGO Latitude/Longitude: 46° 29' 4" N 110° 14' 52" W Field Number: 08N12E0 Datum: NAD83 Lab Date: 11/25/2002 Altitude: Lab/Analyst: MBMG / KTH County/State: WHEATLAND / MT Sample Method/Handling: PUMPED / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 211EGLE Total Depth (ft): 155 USGS 7.5' Quad: SWL-MP (ft): NR PWS Id: 00445005 Depth Water Enters (ft): 105 Project: MRWS-SWP Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 2.920 0.146 Bicarbonate (HCO3) 632.000 10.358 Magnesium (Mg) 10.400 0.856 Carbonate (CO3) 20.400 0.731 Sodium (Na) 634.000 27.579 Chloride (Cl) 24.000 0.677 Potassium (K) 0.752 0.019 Sulfate (SO4) 705.000 14.685 Iron (Fe) 0.049 0.002 Nitrate (as N) <0.5 P 0.000 Manganese (Mn) 0.010 0.000 Fluoride (F) <2.0 0.000 Silica (SiO2) 5.940 Orthophosphate (as P) <0.5 0.000 Total Cations 28.722 Total Anions 26.451 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 358.000 Antimony (Sb): <10 Chromium (Cr): <10 Nickel (Ni): <2 Thallium (Tl): <20 Arsenic (As): NR Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 6.310 Copper (Cu): <5 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1 Boron (B): 1,210.000 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <500 Lead (Pb): NR Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <1 Lithium (Li): 97.300 Silver (Ag): NR Vanadium (V): <10 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <156 Zinc (Zn): <2 Zirconium (Zr): <2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 1714.65 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 2035.32 Hardness as CaCO3: 50.1 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 2374 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 2550 Alkalinity as CaCO3 (mg/L): 551.71 Phosphorus, TD (mg/L): <0.05 Field pH: 6.3 Ryznar Stability Index: 8.026 Field Nitrate (mg/L): NR Lab pH: 8.56 Sodium Adsorption Ratio: 38.9729 Field Dissolved O2 (mg/L): NR Water Temp (°C): 10.7 Langlier Saturation Index: 0.267 Field Chloride (mg/L): NR Air Temp (°C): 10.7 Nitrite (mg/L as N): <0.5 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.