Ground-Water Information Center Water Quality Report Site Name: HOLT RANCH WORKSHOP WELL Report Date: 4/24/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 223033 / 287546 Sample Date: 8/10/2017 11:30:00 AM Location (TRS): 12N 20W 32 DAAC Agency/Sampler: MCWQD / ROSS, TRAVIS Latitude/Longitude: 46° 45' 12" N 114° 7' 52" W Field Number: 287546 Datum: NAD83 Lab Date: 9/22/2017 8:06:38 AM Altitude: 3275.693 Lab/Analyst: MBMG / TIMMER, JACKIE County/State: MISSOULA / MT Sample Method/Handling: PUMPED / ru:1 ra:0 fu:2 fa:2 Site Type: WELL Procedure Type: DISSOLVED Geology: 100UDFD Total Depth (ft): 80 USGS 7.5' Quad: BLUE MOUNTAIN SWL-MP (ft): NR PWS Id: Depth Water Enters (ft): NR Project: BWIPLO, BWIPLOMONGW, BWIPLOLITH1,  BWIPLOLITHX, BWIPLO_CREEK Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 39.210 1.957 Bicarbonate (HCO3) 161.380 2.645 Magnesium (Mg) 9.360 0.770 Carbonate (CO3) 0.000 0.000 Sodium (Na) 5.040 0.219 Chloride (Cl) 8.040 0.227 Potassium (K) 1.940 0.050 Sulfate (SO4) 5.710 0.119 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 1.260 0.090 Manganese (Mn) <0.002 U 0.000 Fluoride (F) 0.140 0.007 Silica (SiO2) 14.030 Orthophosphate (as P) 0.030 J 0.000 Total Cations 2.998 Total Anions 3.088 Trace Element Results (µg/L) Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 0.310 J Strontium (Sr): 59.880 Antimony (Sb): <0.100 U Chromium (Cr): <0.100 U Nickel (Ni): <0.100 U Thallium (Tl): <0.100 U Arsenic (As): <0.100 U Cobalt (Co): <0.100 U Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 99.170 Copper (Cu): <0.500 U Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): 5.070 Palladium (Pd): <0.100 U Titanium (Ti): <0.100 U Boron (B): 2.750 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): 0.600 Uranium (U): 1.270 Cadmium (Cd): <0.100 U Lithium (Li): <2.000 U Silver (Ag): <0.100 U Vanadium (V): <0.100 U Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): 6.870 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 163.89 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 245.58 Hardness as CaCO3: 136.43 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 225 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 269.25 Alkalinity as CaCO3 (mg/L): 132.05 Phosphorus, TD (mg/L): <0.030 U Field pH: 7.58 Ryznar Stability Index: 7.582 Field Nitrate (mg/L): NR Lab pH: 7.99 Sodium Adsorption Ratio: 0.1863 Field Dissolved O2 (mg/L): NR Water Temp (°C): 11.4 Langlier Saturation Index: 0.204 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.010 U Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) 1.160 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) 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: Field Remarks: WATER CHEMISTRY MEASURED, WELL ON ALL DAY- PWL 28 FT 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.