Ground-Water Information Center Water Quality Report Site Name: SILVER SPRINGS  Report Date: 5/18/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 1979Q0077 / 9027 Sample Date: 7/11/1978 11:00:00 AM Location (TRS): 05S 05W 14 CCCCA Agency/Sampler: PRIV / MWS Latitude/Longitude: 45° 23' 38" N 112° 11' 36" W Field Number: SS-1-78 Datum: NAD83 Lab Date: 7/27/1978 Altitude: 4945.25 Lab/Analyst: MBMG / GAM County/State: MADISON / MT Sample Method/Handling: GRAB / 5340 Site Type: SPRING Procedure Type: DISSOLVED Geology: Total Depth (ft): NR USGS 7.5' Quad: SHERIDAN SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): NR Project: RVCD2003, LRGSPRINGS Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 76.000 3.792 Bicarbonate (HCO3) 304.000 4.983 Magnesium (Mg) 34.000 2.798 Carbonate (CO3) 0.000 0.000 Sodium (Na) 28.400 1.235 Chloride (Cl) 7.700 0.217 Potassium (K) 4.000 0.102 Sulfate (SO4) 136.000 2.833 Iron (Fe) 0.020 0.001 Nitrate (as N) 0.325 0.023 Manganese (Mn) <.01 0.000 Fluoride (F) 0.400 0.021 Silica (SiO2) 19.500 Orthophosphate (as P) NR 0.000 Total Cations 7.931 Total Anions 8.077 Trace Element Results (µg/L) Aluminum (Al): 13.600 Cesium (Cs): NR Molybdenum (Mo): NR Strontium (Sr): NR Antimony (Sb): NR Chromium (Cr): NR Nickel (Ni): <10. Thallium (Tl): NR Arsenic (As): 2.400 Cobalt (Co): NR Niobium (Nb): NR Thorium (Th): NR Barium (Ba): NR Copper (Cu): <10. Neodymium (Nd): NR Tin (Sn): <1. Beryllium (Be): NR Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): NR Boron (B): NR Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): NR Lead (Pb): <50. Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <10. Lithium (Li): 20.000 Silver (Ag): NR Vanadium (V): NR Cerium (Ce): NR Mercury (Hg): <.3 Selenium (Se): NR Zinc (Zn): 20.000 Zirconium (Zr): NR Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 455.79 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 610.03 Hardness as CaCO3: 329.72 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): NR Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 718.9 Alkalinity as CaCO3 (mg/L): 249.33 Phosphorus, TD (mg/L): NR Field pH: NR Ryznar Stability Index: 6.745 Field Nitrate (mg/L): NR Lab pH: 7.7 Sodium Adsorption Ratio: 0.671 Field Dissolved O2 (mg/L): NR Water Temp (°C): 14.4 Langlier Saturation Index: 0.478 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) 0.218 Notes Sample Condition: Field Remarks: STINE MICHAEL PO BOX 414 DILLON MT 59725 * SAMPLE FROM DITCH 1 MI NW OF SPRING 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.