Ground-Water Information Center Water Quality Report Site Name: MBMG *LEWIS AND CLARK COUNTY * HAMER EAST  Report Date: 4/25/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 1990Q0302 / 88214 Sample Date: 8/14/1990 1:05:00 PM Location (TRS): 10N 03W 02 DDDD Agency/Sampler: USGS / VMD Latitude/Longitude: 46° 38' 46" N 111° 56' 13" W Field Number: LC-1222 Datum: WGS84 Lab Date: 9/28/1990 Altitude: 3722.662 Lab/Analyst: MBMG / SSH County/State: LEWIS AND CLARK / MT Sample Method/Handling: PUMPED / Site Type: WELL Procedure Type: DISSOLVED Geology: 110ALVM Total Depth (ft): 25 USGS 7.5' Quad: HELENA SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): 20 Project: GWAAMON Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 62.480 3.118 Bicarbonate (HCO3) 173.000 2.835 Magnesium (Mg) 13.560 1.116 Carbonate (CO3) 0.000 0.000 Sodium (Na) 13.990 0.609 Chloride (Cl) 9.600 0.271 Potassium (K) 3.480 0.089 Sulfate (SO4) 78.000 1.625 Iron (Fe) <.004 0.000 Nitrate (as N) 3.330 0.238 Manganese (Mn) <.002 0.000 Fluoride (F) 0.250 0.013 Silica (SiO2) 20.900 Orthophosphate (as P) NR 0.000 Total Cations 4.962 Total Anions 4.982 Trace Element Results (µg/L) Aluminum (Al): 151.000 Cesium (Cs): NR Molybdenum (Mo): <40. Strontium (Sr): 419.000 Antimony (Sb): NR Chromium (Cr): <5. Nickel (Ni): <20. Thallium (Tl): NR Arsenic (As): NR Cobalt (Co): NR Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 48.000 Copper (Cu): <4. Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): NR Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): 6.000 Boron (B): 49.000 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <100. Lead (Pb): NR Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <5. Lithium (Li): 12.000 Silver (Ag): <4. Vanadium (V): <4. Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): NR Zinc (Zn): <6. Zirconium (Zr): <6. Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 290.41 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 378.19 Hardness as CaCO3: 211.83 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 480 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 480.3 Alkalinity as CaCO3 (mg/L): 141.89 Phosphorus, TD (mg/L): NR Field pH: 7.11 Ryznar Stability Index: 7.835 Field Nitrate (mg/L): NR Lab pH: 7.27 Sodium Adsorption Ratio: 0.4186 Field Dissolved O2 (mg/L): NR Water Temp (°C): 12 Langlier Saturation Index: -0.282 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 Additional Parameters Phosphate T Dis (mg/L - P) L0.1 Notes Sample Condition: CLEAR * Field Remarks: SAMPLED AND COLLECTED THROUGH SAMPLE CHAMBER * HACH NO3 = 3.7 MG/L * FIELD D.O. = 8.1 MG/L * Lab Remarks: ALL ANALYSES ARE DISSOLVED UNLESS NOTED OTHERWISE *

Explanation: mg/L = milligrams per Liter; µg/L = micrograms per Liter; ft = feet; NR = No Reading in GWIC Qualifiers: A = Hydride atomic absorption; E = Estimated due to interference; H = Exceeded holding time; J = Estimated quantity above detection limit but below reporting limit; K = Na+K combined; N = Spiked sample recovery not within control limits; 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.