Ground-Water Information Center Water Quality Report Site Name: DOUGLAS CHUCK & PAT  Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2000Q0424 / 67425 Sample Date: 10/21/1999 2:25:00 PM Location (TRS): 12N 20W 33 DABA Agency/Sampler: MBMG / CARSTARPHEN, CAMELA Latitude/Longitude: 46° 45' 15" N 114° 6' 39" W Field Number: 67425 Datum: NAD27 Lab Date: 1/24/2000 Altitude: 3295 Lab/Analyst: MBMG / JMC County/State: MISSOULA / MT Sample Method/Handling: PUMPED / 4220 Site Type: WELL Procedure Type: DISSOLVED Geology: 120SNGR Total Depth (ft): 68.2 USGS 7.5' Quad: SOUTHWEST MISSOULA SWL-MP (ft): 56.67 PWS Id: Depth Water Enters (ft): 68.2 Project: GWCP04, BWIPLOLITHX, BWIPLO_CREEK Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 23.700 1.183 Bicarbonate (HCO3) 116.400 1.908 Magnesium (Mg) 7.140 0.588 Carbonate (CO3) 0.000 0.000 Sodium (Na) 2.890 0.126 Chloride (Cl) 0.813 0.023 Potassium (K) 1.690 0.043 Sulfate (SO4) 3.420 0.071 Iron (Fe) <.01 0.000 Nitrate (as N) <.5 P 0.000 Manganese (Mn) <.02 0.000 Fluoride (F) 0.102 0.005 Silica (SiO2) 13.000 Orthophosphate (as P) <.05 0.000 Total Cations 1.942 Total Anions 2.007 Trace Element Results (µg/L) Aluminum (Al): <30 Cesium (Cs): NR Molybdenum (Mo): <10 Strontium (Sr): 60.800 Antimony (Sb): <2 Chromium (Cr): <2 Nickel (Ni): <2 Thallium (Tl): <5 Arsenic (As): <1 Cobalt (Co): <2 Niobium (Nb): NR Thorium (Th): NR Barium (Ba): 53.900 Copper (Cu): <2 Neodymium (Nd): NR Tin (Sn): NR Beryllium (Be): <2 Gallium (Ga): NR Palladium (Pd): NR Titanium (Ti): <20 Boron (B): <30 Lanthanum (La): NR Praseodymium (Pr): NR Tungsten (W): NR Bromide (Br): <50 Lead (Pb): <2 Rubidium (Rb): NR Uranium (U): NR Cadmium (Cd): <2 Lithium (Li): <10 Silver (Ag): <1 Vanadium (V): <5 Cerium (Ce): NR Mercury (Hg): NR Selenium (Se): <1 Zinc (Zn): 37.800 Zirconium (Zr): <10 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 110.02 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 168.88 Hardness as CaCO3: 88.57 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 177 Field Alkalinity as CaCO3 (mg/L): 68 PCP (µg/L): NR Lab Conductivity (µmhos): 178 Alkalinity as CaCO3 (mg/L): 95.14 Phosphorus, TD (mg/L): <.2 Field pH: 6.9 Ryznar Stability Index: 8.914 Field Nitrate (mg/L): 0.000 Lab pH: 7.38 Sodium Adsorption Ratio: 0.1387 Field Dissolved O2 (mg/L): NR Water Temp (°C): 9.3 Langlier Saturation Index: -0.767 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 288 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: Lab Remarks:

Explanation: mg/L = milligrams per Liter; µg/L = micrograms per Liter; ft = feet; NR = No Reading in GWIC Qualifiers: A = Hydride atomic absorption; E = Estimated due to interference; H = Exceeded holding time; J = Estimated quantity above detection limit but below reporting limit; K = Na+K combined; N = Spiked sample recovery not within control limits; 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.