Ground-Water Information Center Water Quality Report Site Name: GIBSON CREEK AT DRY CREEK SCHOOL ROAD GCDCSRD Report Date: 4/25/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 205286 / 262881 Sample Date: 10/9/2013 12:40:00 PM Location (TRS): 01N 04E 04 CB Agency/Sampler: MBMG / MICHALEK, TOM Latitude/Longitude: 45° 52' 16" N 111° 13' 51" W Field Number: 262881 Datum: NAD83 Lab Date: 1/13/2014 2:53:50 PM Altitude: Lab/Analyst: MBMG / TIMMER, JACKIE 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) 53.920 2.691 Bicarbonate (HCO3) 221.350 3.628 Magnesium (Mg) 16.000 1.317 Carbonate (CO3) 6.460 0.231 Sodium (Na) 8.100 0.352 Chloride (Cl) 4.320 0.122 Potassium (K) 2.860 0.073 Sulfate (SO4) 30.300 0.631 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 0.710 0.051 Manganese (Mn) <0.002 U 0.000 Fluoride (F) 0.240 0.013 Silica (SiO2) 17.510 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.441 Total Anions 4.676 Trace Element Results (µg/L) Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 0.990 Strontium (Sr): 301.460 Antimony (Sb): <0.100 U Chromium (Cr): 0.380 J Nickel (Ni): 1.240 Thallium (Tl): <0.100 U Arsenic (As): 0.740 Cobalt (Co): 0.270 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 87.320 Copper (Cu): <0.040 U Neodymium (Nd): <0.100 U Tin (Sn): <0.100 U Beryllium (Be): <0.100 U Gallium (Ga): <0.100 U Palladium (Pd): <0.100 U Titanium (Ti): 0.300 J Boron (B): 13.150 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): 1.550 Uranium (U): 1.810 Cadmium (Cd): <0.100 U Lithium (Li): <2.000 U Silver (Ag): <0.100 U Vanadium (V): 1.690 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): <0.050 U Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 248.79 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 360.92 Hardness as CaCO3: 200.49 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 483 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 393.87 Alkalinity as CaCO3 (mg/L): 191.27 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.72 Ryznar Stability Index: 6.683 Field Nitrate (mg/L): NR Lab pH: 8.29 Sodium Adsorption Ratio: 0.2459 Field Dissolved O2 (mg/L): NR Water Temp (°C): 11.8 Langlier Saturation Index: 0.803 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) 0.660 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.