Ground-Water Information Center Water Quality Report Site Name: USGS OBSERVATION WELL FDD RANCH FDD RANCH Report Date: 4/28/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2009Q0367 / 133167 Sample Date: 10/20/2008 4:06:00 PM Location (TRS): 02N 03E 33 DADD Agency/Sampler: MBMG / DCM Latitude/Longitude: 45° 52' 43" N 111° 20' 54" W Field Number: 133167 Datum: NAD83 Lab Date: 12/19/2008 Altitude: 4205.99 Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: GRAB / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 110SNGR, 111SNGR Total Depth (ft): 61 USGS 7.5' Quad: NIXON GULCH SWL-MP (ft): 40.85 PWS Id: Depth Water Enters (ft): 42 Project: GWAAMON, GWCP08, NGWMN-MONTANA,  GWCP08MON, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 61.900 3.089 Bicarbonate (HCO3) 258.900 4.243 Magnesium (Mg) 17.700 1.457 Carbonate (CO3) 0.000 0.000 Sodium (Na) 24.300 1.057 Chloride (Cl) 7.960 0.225 Potassium (K) 7.550 0.193 Sulfate (SO4) 33.500 0.698 Iron (Fe) <0.004 0.000 Nitrate (as N) 1.02 P 0.073 Manganese (Mn) 0.018 0.001 Fluoride (F) <0.5 0.000 Silica (SiO2) 40.700 Orthophosphate (as P) <0.5 0.000 Total Cations 5.809 Total Anions 5.239 Trace Element Results (µg/L) Aluminum (Al): <5.25 Cesium (Cs): <0.07 Molybdenum (Mo): 2.200 Strontium (Sr): 386.000 Antimony (Sb): <0.10 Chromium (Cr): <0.12 Nickel (Ni): <0.20 Thallium (Tl): <0.02 Arsenic (As): 2.990 Cobalt (Co): 0.081 Niobium (Nb): <0.07 Thorium (Th): <0.09 Barium (Ba): 74.400 Copper (Cu): <1.98 Neodymium (Nd): <0.15 Tin (Sn): <0.16 Beryllium (Be): <0.30 Gallium (Ga): <0.12 Palladium (Pd): 0.800 Titanium (Ti): <0.40 Boron (B): 40.200 Lanthanum (La): <0.05 Praseodymium (Pr): <0.04 Tungsten (W): 0.125 Bromide (Br): <500 Lead (Pb): <0.11 Rubidium (Rb): 8.840 Uranium (U): 7.740 Cadmium (Cd): <0.25 Lithium (Li): 5.400 Silver (Ag): <0.11 Vanadium (V): 4.430 Cerium (Ce): <0.06 Mercury (Hg): NR Selenium (Se): <0.91 Zinc (Zn): <0.99 Zirconium (Zr): <0.08 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 322.19 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 453.6 Hardness as CaCO3: 227.42 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 504 Field Alkalinity as CaCO3 (mg/L): 226 PCP (µg/L): NR Lab Conductivity (µmhos): 496 Alkalinity as CaCO3 (mg/L): 212.42 Phosphorus, TD (mg/L): <0.05 Field pH: 7.66 Ryznar Stability Index: 7.252 Field Nitrate (mg/L): 0.000 Lab pH: 7.51 Sodium Adsorption Ratio: 0.6925 Field Dissolved O2 (mg/L): 5.280 Water Temp (°C): 11.1 Langlier Saturation Index: 0.129 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): -52 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.