Ground-Water Information Center Water Quality Report Site Name: CLARENCE VAN DYKE  Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2009Q0365 / 135734 Sample Date: 10/21/2008 12:12:00 PM Location (TRS): 01S 04E 29 BCDC Agency/Sampler: MBMG / DCM Latitude/Longitude: 45° 43' 19" N 111° 15' 53" W Field Number: 135734 Datum: NAD83 Lab Date: 12/19/2008 Altitude: 4670.98 Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: GRAB / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 120SDMS Total Depth (ft): 120 USGS 7.5' Quad: ANCENEY SWL-MP (ft): 76.17 PWS Id: Depth Water Enters (ft): NR Project: GWAAMON, GWCP08, GWCP08MON,  BWIP4C, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 30.200 1.507 Bicarbonate (HCO3) 277.200 4.543 Magnesium (Mg) 18.700 1.539 Carbonate (CO3) 0.000 0.000 Sodium (Na) 60.600 2.636 Chloride (Cl) 6.560 0.185 Potassium (K) 7.070 0.181 Sulfate (SO4) 33.300 0.694 Iron (Fe) <0.004 0.000 Nitrate (as N) 1.82 P 0.130 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.544 0.029 Silica (SiO2) 45.800 Orthophosphate (as P) <0.5 0.000 Total Cations 5.878 Total Anions 5.581 Trace Element Results (µg/L) Aluminum (Al): <5.25 Cesium (Cs): <0.07 Molybdenum (Mo): 8.000 Strontium (Sr): 189.000 Antimony (Sb): <0.10 Chromium (Cr): <0.12 Nickel (Ni): <0.20 Thallium (Tl): <0.02 Arsenic (As): 21.300 Cobalt (Co): <0.08 Niobium (Nb): <0.07 Thorium (Th): <0.09 Barium (Ba): 41.600 Copper (Cu): <1.98 Neodymium (Nd): <0.15 Tin (Sn): <0.16 Beryllium (Be): <0.30 Gallium (Ga): <0.12 Palladium (Pd): 0.430 Titanium (Ti): <0.40 Boron (B): 123.000 Lanthanum (La): 0.100 Praseodymium (Pr): 0.065 Tungsten (W): 0.253 Bromide (Br): <500 Lead (Pb): <0.11 Rubidium (Rb): 13.800 Uranium (U): 16.400 Cadmium (Cd): <0.25 Lithium (Li): 2.700 Silver (Ag): <0.11 Vanadium (V): 23.500 Cerium (Ce): 0.100 Mercury (Hg): NR Selenium (Se): 1.640 Zinc (Zn): <0.99 Zirconium (Zr): <0.08 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 340.35 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 480.9 Hardness as CaCO3: 152.38 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 551 Field Alkalinity as CaCO3 (mg/L): 248 PCP (µg/L): NR Lab Conductivity (µmhos): 545 Alkalinity as CaCO3 (mg/L): 227.19 Phosphorus, TD (mg/L): <0.05 Field pH: 7.78 Ryznar Stability Index: 7.637 Field Nitrate (mg/L): 3.000 Lab pH: 7.69 Sodium Adsorption Ratio: 2.1502 Field Dissolved O2 (mg/L): 6.130 Water Temp (°C): 10.8 Langlier Saturation Index: 0.026 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 232 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.