Ground-Water Information Center Water Quality Report Site Name: COOK RANCH  Report Date: 4/25/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2002Q1255 / 135689 Sample Date: 5/14/2002 9:32:00 AM Location (TRS): 01N 05E 04 DDAA Agency/Sampler: MBMG / MGR Latitude/Longitude: 45° 51' 48" N 111° 5' 51" W Field Number: 135689 Datum: NAD83 Lab Date: 7/8/2002 Altitude: 4507.132 Lab/Analyst: MBMG / JMC County/State: GALLATIN / MT Sample Method/Handling: PUMPED / 6230 Site Type: WELL Procedure Type: DISSOLVED Geology: 110SNGR, 111ALVM Total Depth (ft): 13.5 USGS 7.5' Quad: MISER CREEK SWL-MP (ft): 10.42 PWS Id: Depth Water Enters (ft): NR Project: GWAAMON, GWCP08, NGWMN-MONTANA,  BRIDGER, GWCP08MON, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 77.000 3.842 Bicarbonate (HCO3) 256.400 4.202 Magnesium (Mg) 11.000 0.905 Carbonate (CO3) 0.000 0.000 Sodium (Na) 7.440 0.324 Chloride (Cl) 25.100 0.708 Potassium (K) 1.630 0.042 Sulfate (SO4) 17.800 0.371 Iron (Fe) 0.026 0.001 Nitrate (as N) 1.35 P 0.096 Manganese (Mn) 0.003 0.000 Fluoride (F) 0.077 0.004 Silica (SiO2) 12.100 Orthophosphate (as P) <.05 0.000 Total Cations 5.117 Total Anions 5.382 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 128.000 Antimony (Sb): <2 Chromium (Cr): 2.660 Nickel (Ni): <2 Thallium (Tl): <5 Arsenic (As): <1 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 60.800 Copper (Cu): 1.380 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1 Boron (B): <30 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): 112.000 Lead (Pb): <2 Rubidium (Rb): NR Uranium (U): 0.627 Cadmium (Cd): <2 Lithium (Li): 3.350 Silver (Ag): <1 Vanadium (V): <5 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): 1.390 Zinc (Zn): <2 Zirconium (Zr): <2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 278.11 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 408 Hardness as CaCO3: 237.55 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 467 Field Alkalinity as CaCO3 (mg/L): 168 PCP (µg/L): NR Lab Conductivity (µmhos): 404 Alkalinity as CaCO3 (mg/L): 209.96 Phosphorus, TD (mg/L): <.05 Field pH: 7.43 Ryznar Stability Index: 7.583 Field Nitrate (mg/L): 1.000 Lab pH: 6.9 Sodium Adsorption Ratio: 0.1976 Field Dissolved O2 (mg/L): NR Water Temp (°C): 6.4 Langlier Saturation Index: -0.341 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 133.5 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.