Ground-Water Information Center Water Quality Report Site Name: COWAN CREEK AT DRY CREEK SCHOOL ROAD CCDCSRD Report Date: 4/23/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 205285 / 262901 Sample Date: 10/9/2013 12:40:00 PM Location (TRS): 01N 04E 04 CA Agency/Sampler: MBMG / MICHALEK, TOM Latitude/Longitude: 45° 52' 14" N 111° 13' 41" W Field Number: 262901 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) 64.490 3.218 Bicarbonate (HCO3) 249.780 4.094 Magnesium (Mg) 15.350 1.263 Carbonate (CO3) 0.000 0.000 Sodium (Na) 6.320 0.275 Chloride (Cl) 5.880 0.166 Potassium (K) 3.160 0.081 Sulfate (SO4) 29.760 0.620 Iron (Fe) <0.015 U 0.000 Nitrate (as N) 1.050 0.075 Manganese (Mn) <0.002 U 0.000 Fluoride (F) 0.180 0.009 Silica (SiO2) 18.760 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.845 Total Anions 4.964 Trace Element Results (µg/L) Aluminum (Al): <2.000 U Cesium (Cs): <0.100 U Molybdenum (Mo): 0.560 Strontium (Sr): 297.340 Antimony (Sb): <0.100 U Chromium (Cr): <0.100 U Nickel (Ni): 1.410 Thallium (Tl): <0.100 U Arsenic (As): 0.880 Cobalt (Co): <0.100 U Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 123.250 Copper (Cu): 0.700 J 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): 0.320 J Boron (B): 8.470 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): 1.510 Uranium (U): 2.410 Cadmium (Cd): <0.100 U Lithium (Li): <2.000 U Silver (Ag): <0.100 U Vanadium (V): 1.540 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): <0.100 U Zinc (Zn): 0.910 J Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 267.99 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 394.84 Hardness as CaCO3: 224.21 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 543 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 425.94 Alkalinity as CaCO3 (mg/L): 205.04 Phosphorus, TD (mg/L): <0.030 U Field pH: 8.55 Ryznar Stability Index: 6.717 Field Nitrate (mg/L): NR Lab pH: 8.04 Sodium Adsorption Ratio: 0.1744 Field Dissolved O2 (mg/L): NR Water Temp (°C): 8.4 Langlier Saturation Index: 0.661 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) 1.000 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) 1.100 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.