Ground-Water Information Center Water Quality Report Site Name: PERRY GARY  Report Date: 4/23/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 210078 / 176444 Sample Date: 9/10/2015 2:50:00 PM Location (TRS): 01S 04E 02 CBD Agency/Sampler: / ENGLISH, ALAN Latitude/Longitude: 45° 46' 38" N 111° 12' 5" W Field Number: 176444 Datum: NAD83 Lab Date: 10/13/2015 8:46:48 AM Altitude: Lab/Analyst: MBMG / TIMMER, JACKIE County/State: GALLATIN / MT Sample Method/Handling: GRAB / ru:1 ra:0 fu:2 fa:2 Site Type: WELL Procedure Type: DISSOLVED Geology: 110ALVM Total Depth (ft): 123 USGS 7.5' Quad: SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): 118.5 Project: RIVERROCK, BWIPMN Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 62.230 3.105 Bicarbonate (HCO3) 252.870 4.145 Magnesium (Mg) 16.630 1.368 Carbonate (CO3) 0.000 0.000 Sodium (Na) 7.000 0.305 Chloride (Cl) 4.410 0.124 Potassium (K) 3.180 0.081 Sulfate (SO4) 29.490 0.614 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 2.000 0.143 Manganese (Mn) <0.002 U 0.000 Fluoride (F) 0.260 0.014 Silica (SiO2) 26.500 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.867 Total Anions 5.040 Trace Element Results (µg/L) Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 0.580 Strontium (Sr): 252.250 Antimony (Sb): <0.100 U Chromium (Cr): <0.100 U Nickel (Ni): <0.100 U Thallium (Tl): <0.100 U Arsenic (As): 1.040 Cobalt (Co): <0.100 U Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 105.660 Copper (Cu): <0.500 U Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): 5.670 Palladium (Pd): 0.210 J Titanium (Ti): 46.440 Boron (B): 15.740 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U Bromide (Br): <10.000 U Lead (Pb): 0.300 Rubidium (Rb): 1.820 Uranium (U): 2.650 Cadmium (Cd): <0.100 U Lithium (Li): 3.760 J Silver (Ag): <0.100 U Vanadium (V): 1.680 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): 5.420 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 275.5 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 403.87 Hardness as CaCO3: 223.84 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 503.5 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 424.17 Alkalinity as CaCO3 (mg/L): 207.5 Phosphorus, TD (mg/L): <0.030 U Field pH: 7.73 Ryznar Stability Index: 7.128 Field Nitrate (mg/L): NR Lab pH: 7.65 Sodium Adsorption Ratio: 0.2036 Field Dissolved O2 (mg/L): 7.250 Water Temp (°C): 11.3 Langlier Saturation Index: 0.261 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.010 U Field Redox (mV): 118 Nitrate + Nitrite (mg/L as N) 1.670 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) 2.110 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 FROM FROST-FREE HYDRANT AT WELLHEAD 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.