Ground-Water Information Center Water Quality Report Site Name: GREEN MEADOW COUNTRY CLUB UNUSED DEEP WELL Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 200066 / 261223 Sample Date: 5/10/2011 11:23:00 AM Location (TRS): 10N 04W 23 BAAA Agency/Sampler: MBMG / RICHTER, MIKE Latitude/Longitude: 46° 36' 55" N 112° 4' 26" W Field Number: 261223 Datum: NAD83 Lab Date: 7/21/2011 8:55:11 AM Altitude: 3900 Lab/Analyst: MBMG / MCGRATH, STEVE County/State: LEWIS AND CLARK / MT Sample Method/Handling: PUMPED / ru:1 ra:0 fu:1 fa:2 Site Type: WELL Procedure Type: DISSOLVED Geology: 211SCGR Total Depth (ft): 358 USGS 7.5' Quad: HELENA SWL-MP (ft): 3.79 PWS Id: Depth Water Enters (ft): NR Project: GWAAMON Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 22.560 1.126 Bicarbonate (HCO3) 205.180 3.363 Magnesium (Mg) 14.430 1.187 Carbonate (CO3) 0.000 0.000 Sodium (Na) 55.940 2.433 Chloride (Cl) 7.800 0.220 Potassium (K) 4.310 0.110 Sulfate (SO4) 44.100 0.919 Iron (Fe) 0.305 0.011 Nitrate (as N) <0.05 U 0.000 Manganese (Mn) 0.004 0.000 Fluoride (F) 1.130 0.059 Silica (SiO2) 8.770 Orthophosphate (as P) <0.10 U 0.000 Total Cations 4.879 Total Anions 4.561 Trace Element Results (µg/L) Aluminum (Al): <2.00 U Cesium (Cs): 0.3400 J Molybdenum (Mo): 3.310 Strontium (Sr): 315.740 Antimony (Sb): <0.50 U Chromium (Cr): <0.50 U Nickel (Ni): <0.50 U Thallium (Tl): <0.50 U Arsenic (As): 0.800 Cobalt (Co): <0.50 U Niobium (Nb): <0.50 U Thorium (Th): <0.50 U Barium (Ba): 35.050 Copper (Cu): <0.50 U Neodymium (Nd): <0.50 U Tin (Sn): <0.50 U Beryllium (Be): <0.50 U Gallium (Ga): <0.50 U Palladium (Pd): 0.1200 J Titanium (Ti): 0.2000 J Boron (B): 37.890 Lanthanum (La): <0.50 U Praseodymium (Pr): <0.50 U Tungsten (W): 0.1400 J Bromide (Br): 82.000 Lead (Pb): <0.20 U Rubidium (Rb): 8.090 Uranium (U): 0.2900 J Cadmium (Cd): <0.50 U Lithium (Li): 20.180 Silver (Ag): <0.50 U Vanadium (V): <0.50 U Cerium (Ce): <0.50 U Mercury (Hg): NR Selenium (Se): <0.50 U Zinc (Zn): <1.00 U Zirconium (Zr): <0.50 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 259.98 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 363.99 Hardness as CaCO3: 115.73 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 461 Field Alkalinity as CaCO3 (mg/L): 190 PCP (µg/L): NR Lab Conductivity (µmhos): 427.8 Alkalinity as CaCO3 (mg/L): 168.14 Phosphorus, TD (mg/L): <0.06 U Field pH: 8 Ryznar Stability Index: 7.942 Field Nitrate (mg/L): 0.000 Lab pH: 7.9 Sodium Adsorption Ratio: 2.2651 Field Dissolved O2 (mg/L): 0.240 Water Temp (°C): 14.1 Langlier Saturation Index: -0.021 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.05 U Field Redox (mV): 404 Nitrate + Nitrite (mg/L as N) <0.20 U Hydroxide (mg/L as OH): 0.000 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) <1.00 U 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.