Ground-Water Information Center Water Quality Report Site Name: LAWLOR JOSEPH & LAURA MAE  Report Date: 4/24/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2009Q0073 / 159571 Sample Date: 6/19/2008 1:58:00 PM Location (TRS): 01N 04E 33 BBB Agency/Sampler: MBMG / ARE Latitude/Longitude: 45° 48' 3" N 111° 14' 24" W Field Number: Datum: NAD83 Lab Date: 10/8/2008 Altitude: Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: / Site Type: WELL Procedure Type: DISSOLVED Geology: 111SNGR Total Depth (ft): 60 USGS 7.5' Quad: SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): 60 Project: RIVERROCK Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 39.200 1.956 Bicarbonate (HCO3) 147.900 2.424 Magnesium (Mg) 12.500 1.029 Carbonate (CO3) 0.000 0.000 Sodium (Na) 4.400 0.191 Chloride (Cl) 3.240 0.091 Potassium (K) 2.060 0.053 Sulfate (SO4) 37.600 0.783 Iron (Fe) 0.191 0.007 Nitrate (as N) 0.790 P 0.056 Manganese (Mn) 0.003 0.000 Fluoride (F) 0.171 0.009 Silica (SiO2) 16.200 Orthophosphate (as P) <0.05 0.000 Total Cations 3.242 Total Anions 3.364 Trace Element Results (µg/L) Aluminum (Al): <1.0 Cesium (Cs): <0.1 Molybdenum (Mo): 0.772 Strontium (Sr): 227.000 Antimony (Sb): 0.158 Chromium (Cr): 0.231 Nickel (Ni): <0.1 Thallium (Tl): 0.141 Arsenic (As): 0.809 Cobalt (Co): 0.179 Niobium (Nb): <0.1 Thorium (Th): <0.1 Barium (Ba): 52.700 Copper (Cu): 0.750 Neodymium (Nd): <0.2 Tin (Sn): <0.1 Beryllium (Be): <0.1 Gallium (Ga): <0.1 Palladium (Pd): 0.291 Titanium (Ti): 0.462 Boron (B): 7.900 Lanthanum (La): <1.0 Praseodymium (Pr): <0.1 Tungsten (W): <0.1 Bromide (Br): <50 Lead (Pb): <0.5 Rubidium (Rb): 1.060 Uranium (U): 0.927 Cadmium (Cd): 0.136 Lithium (Li): 1.800 Silver (Ag): <0.1 Vanadium (V): 1.190 Cerium (Ce): <0.5 Mercury (Hg): NR Selenium (Se): 0.417 Zinc (Zn): 5.800 Zirconium (Zr): <0.1 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 187.61 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 262.71 Hardness as CaCO3: 149.33 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 241 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 288 Alkalinity as CaCO3 (mg/L): 121.39 Phosphorus, TD (mg/L): 0.055 Field pH: 7.29 Ryznar Stability Index: 8.355 Field Nitrate (mg/L): NR Lab pH: 7.29 Sodium Adsorption Ratio: 0.1424 Field Dissolved O2 (mg/L): 3.600 Water Temp (°C): 9.7 Langlier Saturation Index: -0.533 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 386 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: SAMPLE COLLECTED FROM FROST-FREE TOP-50 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.