Ground-Water Information Center Water Quality Report Site Name: BUCK BRIDGE WELL ASS. * 4MI N CARTER MT.  Report Date: 5/1/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 1976Q1602 / 2980 Sample Date: 1/14/1977 10:30:00 AM Location (TRS): 24N 06E 10 BCBA Agency/Sampler: MBMG / FAS Latitude/Longitude: 47° 51' 12" N 110° 57' 30" W Field Number: 77SS155 Datum: NAD27 Lab Date: 7/21/1977 Altitude: 2970 Lab/Analyst: MBMG / LAW County/State: CHOUTEAU / MT Sample Method/Handling: GRAB / 4130 Site Type: WELL Procedure Type: DISSOLVED Geology: 110ALVM Total Depth (ft): 27 USGS 7.5' Quad: CARTER 7 1/2' SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): NR Project: Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 97.500 4.865 Bicarbonate (HCO3) 374.000 6.130 Magnesium (Mg) 84.000 6.912 Carbonate (CO3) 0.000 0.000 Sodium (Na) 149.000 6.482 Chloride (Cl) 32.000 0.903 Potassium (K) 3.100 0.079 Sulfate (SO4) 500.000 10.415 Iron (Fe) 0.020 0.001 Nitrate (as N) 0.600 0.043 Manganese (Mn) 0.060 0.002 Fluoride (F) 0.400 0.021 Silica (SiO2) 4.600 Orthophosphate (as P) NR 0.000 Total Cations 18.380 Total Anions 17.511 Trace Element Results (µg/L) Aluminum (Al): <50. Cesium (Cs): NR Molybdenum (Mo): NR Strontium (Sr): 1,050.000 Antimony (Sb): <200. Chromium (Cr): <10. Nickel (Ni): <10. Thallium (Tl): NR Arsenic (As): <2. Cobalt (Co): NR Niobium (Nb): NR Thorium (Th): NR Barium (Ba): NR Copper (Cu): 10.000 Neodymium (Nd): NR Tin (Sn): 50.000 Beryllium (Be): NR Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): NR Boron (B): 120.000 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): NR Lead (Pb): <50. Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): NR Lithium (Li): 50.000 Silver (Ag): NR Vanadium (V): NR Cerium (Ce): NR Mercury (Hg): <.3 Selenium (Se): <2. Zinc (Zn): 120.000 Zirconium (Zr): NR Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 1055.87 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 1245.63 Hardness as CaCO3: 589.2 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 1520 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 1606 Alkalinity as CaCO3 (mg/L): 306.74 Phosphorus, TD (mg/L): NR Field pH: 8 Ryznar Stability Index: 5.928 Field Nitrate (mg/L): NR Lab pH: 8.12 Sodium Adsorption Ratio: 2.6709 Field Dissolved O2 (mg/L): NR Water Temp (°C): 9 Langlier Saturation Index: 1.096 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 Additional Parameters Phosphate T Dis (mg/L - P) L.007 Notes Sample Condition: SALINE SEEP PROJECT * CHLORINATOR IN USE * Field Remarks: Lab Remarks:

Explanation: mg/L = milligrams per Liter; µg/L = micrograms per Liter; ft = feet; NR = No Reading in GWIC Qualifiers: A = Hydride atomic absorption; E = Estimated due to interference; H = Exceeded holding time; J = Estimated quantity above detection limit but below reporting limit; K = Na+K combined; N = Spiked sample recovery not within control limits; 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.