Ground-Water Information Center Water Quality Report Site Name: CRAWFORD CLAY  Report Date: 4/25/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2008Q0272 / 240531 Sample Date: 10/23/2007 3:36:00 PM Location (TRS): 25N 06W 33 ACBB Agency/Sampler: MBMG / DCM Latitude/Longitude: 47° 52' 50" N 112° 23' 2" W Field Number: 001 Datum: NAD83 Lab Date: 12/17/2007 Altitude: 4230 Lab/Analyst: MBMG / WO County/State: TETON / MT Sample Method/Handling: PUMPED / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR Total Depth (ft): 40 USGS 7.5' Quad: BYNUM RESERVOIR SWL-MP (ft): 7.03 PWS Id: Depth Water Enters (ft): NR Project: GWCP07 Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 77.500 3.867 Bicarbonate (HCO3) 289.400 4.743 Magnesium (Mg) 21.400 1.761 Carbonate (CO3) 0.000 0.000 Sodium (Na) 3.180 0.138 Chloride (Cl) 0.717 0.020 Potassium (K) 0.794 0.020 Sulfate (SO4) 45.500 0.948 Iron (Fe) 0.006 0.000 Nitrate (as N) 0.108 P 0.008 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.301 0.016 Silica (SiO2) 5.070 Orthophosphate (as P) <0.05 0.000 Total Cations 5.799 Total Anions 5.735 Trace Element Results (µg/L) Aluminum (Al): <2.0 Cesium (Cs): NR Molybdenum (Mo): 1.260 Strontium (Sr): 417.000 Antimony (Sb): <0.1 Chromium (Cr): <0.1 Nickel (Ni): 2.330 Thallium (Tl): <0.1 Arsenic (As): 0.282 Cobalt (Co): 0.274 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 157.000 Copper (Cu): 9.990 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <0.1 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): 1.360 Boron (B): 13.800 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <100 Lead (Pb): 0.936 Rubidium (Rb): NR Uranium (U): 0.780 Cadmium (Cd): <0.1 Lithium (Li): 5.370 Silver (Ag): <0.5 Vanadium (V): 0.114 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <0.5 Zinc (Zn): 39.400 Zirconium (Zr): <0.1 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 297.31 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 443.95 Hardness as CaCO3: 281.6 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 517 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 521 Alkalinity as CaCO3 (mg/L): 237.03 Phosphorus, TD (mg/L): <0.005 Field pH: 7.13 Ryznar Stability Index: 6.792 Field Nitrate (mg/L): 0.000 Lab pH: 7.68 Sodium Adsorption Ratio: 0.0778 Field Dissolved O2 (mg/L): 0.670 Water Temp (°C): 11.1 Langlier Saturation Index: 0.444 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 98 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.