Ground-Water Information Center Water Quality Report Site Name: LOLO CREEK AT LEWIS AND CLARK RD BELOW HWY 93 Report Date: 5/2/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 223023 / 288113 Sample Date: 8/8/2017 2:02:00 PM Location (TRS): 12N 20W 35 CDDD Agency/Sampler: MBMG / BERZEL, MATT Latitude/Longitude: 46° 44' 52" N 114° 4' 35" W Field Number: 288113 Datum: NAD83 Lab Date: 9/22/2017 8:06:38 AM Altitude: Lab/Analyst: MBMG / TIMMER, JACKIE County/State: MISSOULA / MT Sample Method/Handling: GRAB / ru:1 ra:0 fu:2 fa:2 Site Type: STREAM Procedure Type: DISSOLVED Geology: Staff Gage Reading: NR USGS 7.5' Quad: FLORENCE Stream Stage: NR PWS Id: Stream Discharge (cfs): NR  -  NR Project: BWIPLO, BWIPLOSW, BWIPLOSYN,  BWIPLOMONSW, BWIPLOLITH1, BWIPLOLITHX Stream Width (ft): NR  -  NR Sample Water Use: Sample Depth (ft): NR  -  NR Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 13.030 0.650 Bicarbonate (HCO3) 68.180 1.117 Magnesium (Mg) 4.010 0.330 Carbonate (CO3) 1.700 0.061 Sodium (Na) 3.870 0.168 Chloride (Cl) 2.190 0.062 Potassium (K) 1.020 0.026 Sulfate (SO4) 3.360 0.070 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.040 J 0.003 Manganese (Mn) 0.003 J 0.000 Fluoride (F) 0.140 0.007 Silica (SiO2) 10.260 Orthophosphate (as P) 0.020 J 0.000 Total Cations 1.176 Total Anions 1.320 Trace Element Results (µg/L) Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 0.570 Strontium (Sr): 36.120 Antimony (Sb): <0.100 U Chromium (Cr): <0.100 U Nickel (Ni): <0.100 U Thallium (Tl): <0.100 U Arsenic (As): 0.270 J Cobalt (Co): <0.100 U Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 32.170 Copper (Cu): 6.200 Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): 1.720 Palladium (Pd): <0.100 U Titanium (Ti): <0.100 U Boron (B): 2.150 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): 0.940 Uranium (U): 0.500 J 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): <0.500 U Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 72.54 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 107.05 Hardness as CaCO3: 49.04 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 120.7 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 105.08 Alkalinity as CaCO3 (mg/L): 59.11 Phosphorus, TD (mg/L): <0.030 U Field pH: 7.93 Ryznar Stability Index: 9.037 Field Nitrate (mg/L): NR Lab pH: 8.19 Sodium Adsorption Ratio: 0.2485 Field Dissolved O2 (mg/L): NR Water Temp (°C): 18.5 Langlier Saturation Index: -0.423 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) <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) 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: RADON TO U OF M, DISCHARGED MEASURED BY DEAN SNYDER 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.