Ground-Water Information Center Water Quality Report Site Name: USGS OBSERVATION WELL NELSON RD  Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2004Q0549 / 133176 Sample Date: 6/10/2004 3:50:00 PM Location (TRS): 01S 05E 09 DCCC Agency/Sampler: MBMG / LAR Latitude/Longitude: 45° 45' 30" N 111° 6' 47" W Field Number: M:133176 Datum: NAD83 Lab Date: 7/19/2004 Altitude: 4495.26 Lab/Analyst: MBMG / WO County/State: GALLATIN / MT Sample Method/Handling: PUMPED / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR Total Depth (ft): 141 USGS 7.5' Quad: MISER CREEK SWL-MP (ft): 40.18 PWS Id: Depth Water Enters (ft): 15 Project: GWAAMON, GWCP08, NGWMN-MONTANA,  GWCP08MON, BWIP4C, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 71.000 3.543 Bicarbonate (HCO3) 296.800 4.865 Magnesium (Mg) 20.800 1.712 Carbonate (CO3) 0.000 0.000 Sodium (Na) 15.500 0.674 Chloride (Cl) 15.300 0.432 Potassium (K) 3.020 0.077 Sulfate (SO4) 19.000 0.396 Iron (Fe) 0.010 0.000 Nitrate (as N) 1.85 P 0.132 Manganese (Mn) <0.001 0.000 Fluoride (F) 0.083 0.004 Silica (SiO2) 24.100 Orthophosphate (as P) <0.05 0.000 Total Cations 6.020 Total Anions 5.828 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 363.000 Antimony (Sb): <2 Chromium (Cr): 6.220 Nickel (Ni): <2 Thallium (Tl): <5 Arsenic (As): <1 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 106.000 Copper (Cu): <2 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <1 Boron (B): 31.700 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <2 Rubidium (Rb): NR Uranium (U): 2.850 Cadmium (Cd): <1 Lithium (Li): 7.020 Silver (Ag): <1 Vanadium (V): <5 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <1 Zinc (Zn): 61.800 Zirconium (Zr): <2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 315.17 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 465.86 Hardness as CaCO3: 262.9 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): NR Field Alkalinity as CaCO3 (mg/L): 625 PCP (µg/L): NR Lab Conductivity (µmhos): 557 Alkalinity as CaCO3 (mg/L): 243.59 Phosphorus, TD (mg/L): <0.05 Field pH: 7.51 Ryznar Stability Index: 6.434 Field Nitrate (mg/L): 1.000 Lab pH: 8.09 Sodium Adsorption Ratio: 0.4294 Field Dissolved O2 (mg/L): NR Water Temp (°C): 8.9 Langlier Saturation Index: 0.828 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: CLEAR. Field Remarks: NO SC - METER NOT WORKING. 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.