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: 2001Q1611 / 133167 Sample Date: 5/30/2001 2:05:00 PM Location (TRS): 02N 03E 33 DADD Agency/Sampler: MBMG / LAR Latitude/Longitude: 45° 52' 43" N 111° 20' 54" W Field Number: 133167 Datum: NAD83 Lab Date: 7/25/2001 Altitude: 4205.99 Lab/Analyst: MBMG / JMC County/State: GALLATIN / MT Sample Method/Handling: PUMPED / 4220 Site Type: WELL Procedure Type: DISSOLVED Geology: 110SNGR, 111SNGR Total Depth (ft): 61 USGS 7.5' Quad: NIXON GULCH SWL-MP (ft): 39.52 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) 65.500 3.268 Bicarbonate (HCO3) 313.800 5.143 Magnesium (Mg) 18.100 1.489 Carbonate (CO3) 0.000 0.000 Sodium (Na) 23.300 1.014 Chloride (Cl) 6.750 0.190 Potassium (K) 7.530 0.193 Sulfate (SO4) 42.900 0.894 Iron (Fe) 0.007 0.000 Nitrate (as N) 1.06 P 0.076 Manganese (Mn) 0.040 0.001 Fluoride (F) 0.162 0.009 Silica (SiO2) 40.400 Orthophosphate (as P) <.05 0.000 Total Cations 5.980 Total Anions 6.311 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 411.000 Antimony (Sb): <2 Chromium (Cr): <2 Nickel (Ni): <2 Thallium (Tl): <5 Arsenic (As): 2.970 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 75.500 Copper (Cu): <2 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1 Boron (B): 53.300 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <2 Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <2 Lithium (Li): 13.000 Silver (Ag): <1 Vanadium (V): 6.160 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <1 Zinc (Zn): <2 Zirconium (Zr): <2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 359.28 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 518.6 Hardness as CaCO3: 238.05 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 558 Field Alkalinity as CaCO3 (mg/L): 212 PCP (µg/L): NR Lab Conductivity (µmhos): 511 Alkalinity as CaCO3 (mg/L): 257.53 Phosphorus, TD (mg/L): <.05 Field pH: 7.52 Ryznar Stability Index: 7.156 Field Nitrate (mg/L): 0.000 Lab pH: 7.39 Sodium Adsorption Ratio: 0.6487 Field Dissolved O2 (mg/L): NR Water Temp (°C): 14.5 Langlier Saturation Index: 0.117 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 Notes Sample Condition: SILTY TAN/ BROWN Field Remarks: SAND & SILT IN FLOW CELL/ INITIALLY TAN CHANGING TO RED/ BROWN IN COLOR 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.