Ground-Water Information Center Water Quality Report Site Name: CAMPBELL MECHANICAL  Report Date: 4/24/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 210085 / 244682 Sample Date: 9/16/2015 4:25:00 PM Location (TRS): 01S 04E 04 DC Agency/Sampler: MBMG / ENGLISH, ALAN Latitude/Longitude: 45° 46' 28" N 111° 14' 2" W Field Number: 244682 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): 100 USGS 7.5' Quad: SWL-MP (ft): 37.59 PWS Id: Depth Water Enters (ft): 98.5 Project: RIVERROCK, BWIPMN Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 38.530 1.923 Bicarbonate (HCO3) 150.040 2.459 Magnesium (Mg) 11.460 0.943 Carbonate (CO3) 0.000 0.000 Sodium (Na) 4.730 0.206 Chloride (Cl) 2.320 0.065 Potassium (K) 1.730 0.044 Sulfate (SO4) 34.740 0.724 Iron (Fe) 0.248 0.009 Nitrate (as N) 0.220 0.016 Manganese (Mn) <0.002 U 0.000 Fluoride (F) 0.190 0.010 Silica (SiO2) 16.120 Orthophosphate (as P) <0.020 U 0.000 Total Cations 3.131 Total Anions 3.274 Trace Element Results (µg/L) Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 0.670 Strontium (Sr): 211.920 Antimony (Sb): <0.100 U Chromium (Cr): 0.680 Nickel (Ni): 0.340 J Thallium (Tl): <0.100 U Arsenic (As): 0.460 Cobalt (Co): <0.100 U Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 51.850 Copper (Cu): 5.980 Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): 2.810 Palladium (Pd): <0.100 U Titanium (Ti): 23.700 Boron (B): 12.580 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U Bromide (Br): <10.000 U Lead (Pb): <0.060 U Rubidium (Rb): 1.190 Uranium (U): 0.620 Cadmium (Cd): <0.100 U Lithium (Li): 4.100 J Silver (Ag): <0.100 U Vanadium (V): 0.950 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): 6.140 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 183.89 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 260 Hardness as CaCO3: 143.38 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 335.3 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 281.89 Alkalinity as CaCO3 (mg/L): 123.03 Phosphorus, TD (mg/L): <0.030 U Field pH: 7.12 Ryznar Stability Index: 8.528 Field Nitrate (mg/L): NR Lab pH: 7.12 Sodium Adsorption Ratio: 0.1817 Field Dissolved O2 (mg/L): 6.310 Water Temp (°C): 10 Langlier Saturation Index: -0.704 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.010 U Field Redox (mV): 187.8 Nitrate + Nitrite (mg/L as N) <0.200 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) <1.000 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: CLEAR Field Remarks: SAMPLE FROM OUTSIDE TAP NORTH SIDE OF OFFICE 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.