Ground-Water Information Center Water Quality Report Site Name: USGS OBSERVATION WELL HEEB ROAD  Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2009Q0181 / 133165 Sample Date: 8/20/2008 4:31:00 PM Location (TRS): 01N 04E 19 CBCC Agency/Sampler: MBMG / DCM Latitude/Longitude: 45° 49' 17" N 111° 17' 6" W Field Number: 133165 Datum: NAD83 Lab Date: 10/13/2008 Altitude: 4300.35 Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: GRAB / 4230 Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR Total Depth (ft): 81 USGS 7.5' Quad: MANHATTAN SWL-MP (ft): 6.18 PWS Id: Depth Water Enters (ft): 15 Project: GWAAMON, GWCP08, NGWMN-MONTANA,  GWCP08MON, GALVAL Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 59.300 2.959 Bicarbonate (HCO3) 226.400 3.711 Magnesium (Mg) 18.200 1.498 Carbonate (CO3) 0.000 0.000 Sodium (Na) 5.790 0.252 Chloride (Cl) 5.784 0.163 Potassium (K) 2.520 0.064 Sulfate (SO4) 38.200 0.796 Iron (Fe) <0.003 0.000 Nitrate (as N) 1.28 P 0.091 Manganese (Mn) 0.025 0.001 Fluoride (F) 0.132 0.007 Silica (SiO2) 17.200 Orthophosphate (as P) <0.05 0.000 Total Cations 4.782 Total Anions 4.768 Trace Element Results (µg/L) Aluminum (Al): <1.0 Cesium (Cs): <0.1 Molybdenum (Mo): 0.540 Strontium (Sr): 315.000 Antimony (Sb): <0.1 Chromium (Cr): <0.1 Nickel (Ni): <0.1 Thallium (Tl): <0.1 Arsenic (As): 0.302 Cobalt (Co): <0.1 Niobium (Nb): <0.1 Thorium (Th): <0.1 Barium (Ba): 82.700 Copper (Cu): <0.1 Neodymium (Nd): <0.2 Tin (Sn): <0.1 Beryllium (Be): <0.1 Gallium (Ga): <0.1 Palladium (Pd): 0.430 Titanium (Ti): 0.263 Boron (B): 11.500 Lanthanum (La): <1.0 Praseodymium (Pr): <0.1 Tungsten (W): <0.1 Bromide (Br): <50 Lead (Pb): <0.5 Rubidium (Rb): 1.420 Uranium (U): 1.660 Cadmium (Cd): <0.1 Lithium (Li): 2.240 Silver (Ag): <0.1 Vanadium (V): 0.680 Cerium (Ce): <0.5 Mercury (Hg): NR Selenium (Se): 0.628 Zinc (Zn): 0.519 Zirconium (Zr): <0.1 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 258.83 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 373.5 Hardness as CaCO3: 222.98 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 452 Field Alkalinity as CaCO3 (mg/L): 140 PCP (µg/L): NR Lab Conductivity (µmhos): 446 Alkalinity as CaCO3 (mg/L): 185.36 Phosphorus, TD (mg/L): <0.05 Field pH: 7.2 Ryznar Stability Index: 7.298 Field Nitrate (mg/L): 0.000 Lab pH: 7.62 Sodium Adsorption Ratio: 0.1748 Field Dissolved O2 (mg/L): 4.670 Water Temp (°C): 10.4 Langlier Saturation Index: 0.161 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 144 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.