Ground-Water Information Center Water Quality Report Site Name: GIBSON CREEK AT DRY CREEK SCHOOL ROAD GCDCSRD Report Date: 4/19/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 201642 / 262881 Sample Date: 4/26/2012 3:33:00 PM Location (TRS): 01N 04E 04 CB Agency/Sampler: MBMG / SCOTT, JEFF Latitude/Longitude: 45° 52' 16" N 111° 13' 51" W Field Number: 262881 Datum: NAD83 Lab Date: 7/3/2012 3:04:48 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) 60.780 3.033 Bicarbonate (HCO3) 236.620 3.878 Magnesium (Mg) 14.950 1.230 Carbonate (CO3) 0.000 0.000 Sodium (Na) 6.140 0.267 Chloride (Cl) 5.400 0.152 Potassium (K) 3.260 0.083 Sulfate (SO4) 29.330 0.611 Iron (Fe) 0.011 J 0.000 Nitrate (as N) 0.870 0.062 Manganese (Mn) 0.005 J 0.000 Fluoride (F) 0.170 0.009 Silica (SiO2) 19.200 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.624 Total Anions 4.713 Trace Element Results (µg/L) Aluminum (Al): 24.910 Cesium (Cs): <0.100 U Molybdenum (Mo): 0.670 Strontium (Sr): 282.590 Antimony (Sb): <0.100 U Chromium (Cr): 0.190 J Nickel (Ni): 1.340 Thallium (Tl): <0.100 U Arsenic (As): 1.380 Cobalt (Co): 0.830 Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 114.680 Copper (Cu): 0.530 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): 0.700 Boron (B): 10.740 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U Bromide (Br): <10.000 U Lead (Pb): 0.040 J Rubidium (Rb): 1.660 Uranium (U): 2.430 Cadmium (Cd): <0.100 U Lithium (Li): 2.950 Silver (Ag): <0.100 U Vanadium (V): 2.440 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): <0.200 U Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 255.5 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 375.76 Hardness as CaCO3: 213.3 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 417 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 509.2 Alkalinity as CaCO3 (mg/L): 194.38 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.65 Ryznar Stability Index: 6.565 Field Nitrate (mg/L): NR Lab pH: 8.29 Sodium Adsorption Ratio: 0.1788 Field Dissolved O2 (mg/L): NR Water Temp (°C): 16.4 Langlier Saturation Index: 0.862 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) <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.