Ground-Water Information Center Water Quality Report Site Name: EAST GALLATIN AT PENWELL BRIDGE EGPWBR Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 203558 / 258311 Sample Date: 4/4/2013 11:01:00 AM Location (TRS): 01N 05E 29 AC Agency/Sampler: MBMG / MCGIVERN, AMBER Latitude/Longitude: 45° 48' 18" N 111° 7' 54" W Field Number: 258311 Datum: NAD83 Lab Date: 5/13/2013 4:19:01 PM Altitude: Lab/Analyst: MBMG / MCGRATH, STEVE County/State: GALLATIN / MT Sample Method/Handling: GRAB / ru:1 ra:0 fu:1 fa:2 Site Type: STREAM Procedure Type: DISSOLVED Geology: Staff Gage Reading: NR USGS 7.5' Quad: BELGRADE Stream Stage: NR PWS Id: Stream Discharge (cfs): NR  -  NR Project: BWIPMN 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) 48.710 2.431 Bicarbonate (HCO3) 191.930 3.146 Magnesium (Mg) 12.860 1.058 Carbonate (CO3) 0.000 0.000 Sodium (Na) 12.820 0.558 Chloride (Cl) 14.130 0.399 Potassium (K) 2.520 0.064 Sulfate (SO4) 21.900 0.456 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.500 0.036 Manganese (Mn) 0.004 J 0.000 Fluoride (F) 0.230 0.012 Silica (SiO2) 11.230 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.118 Total Anions 4.048 Trace Element Results (µg/L) Aluminum (Al): 3.810 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.780 Strontium (Sr): 172.290 Antimony (Sb): <0.100 U Chromium (Cr): 0.290 J Nickel (Ni): 1.160 Thallium (Tl): <0.100 U Arsenic (As): 0.770 Cobalt (Co): 0.410 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 52.610 Copper (Cu): 1.890 J Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): <0.100 U Palladium (Pd): 0.720 Titanium (Ti): 0.600 Boron (B): 23.270 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): 1.490 Uranium (U): 1.430 Cadmium (Cd): <0.100 U Lithium (Li): 2.230 J Silver (Ag): <0.100 U Vanadium (V): 1.510 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.430 J Zinc (Zn): 2.840 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 220.16 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 317.58 Hardness as CaCO3: 174.56 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 411 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 451 Alkalinity as CaCO3 (mg/L): 157.47 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.54 Ryznar Stability Index: 7.430 Field Nitrate (mg/L): NR Lab pH: 7.8 Sodium Adsorption Ratio: 0.4282 Field Dissolved O2 (mg/L): NR Water Temp (°C): 8.2 Langlier Saturation Index: 0.185 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): 0.060 Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) 0.540 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: Field Remarks: 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.