Ground-Water Information Center Water Quality Report Site Name: EAST GALLATIN AT DRY CREEK SCHOOL ROAD EGDCSRD Report Date: 4/23/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 200760 / 262900 Sample Date: 9/15/2011 2:05:00 PM Location (TRS): 01N 04E 04 DA Agency/Sampler: MBMG / HENNE, BILL Latitude/Longitude: 45° 52' 14" N 111° 13' 22" W Field Number: EGDCSRD Datum: NAD83 Lab Date: 12/20/2011 7:36:09 AM 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) 55.060 2.747 Bicarbonate (HCO3) 213.450 3.498 Magnesium (Mg) 15.630 1.286 Carbonate (CO3) 9.880 0.354 Sodium (Na) 7.640 0.332 Chloride (Cl) 7.210 0.203 Potassium (K) 2.660 0.068 Sulfate (SO4) 17.970 0.374 Iron (Fe) 0.004 J 0.000 Nitrate (as N) 0.620 0.044 Manganese (Mn) 0.002 J 0.000 Fluoride (F) 0.160 0.008 Silica (SiO2) 14.270 Orthophosphate (as P) <0.020 U 0.000 Total Cations 4.439 Total Anions 4.483 Trace Element Results (µg/L) Aluminum (Al): 1.560 J Cesium (Cs): <0.100 U Molybdenum (Mo): 0.580 Strontium (Sr): 173.380 Antimony (Sb): <0.100 U Chromium (Cr): 0.330 J Nickel (Ni): 2.100 Thallium (Tl): <0.100 U Arsenic (As): 0.840 Cobalt (Co): 0.290 J Niobium (Nb): <0.100 U Thorium (Th): <0.100 U Barium (Ba): 65.230 Copper (Cu): 0.420 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): 0.150 J Boron (B): 12.700 Lanthanum (La): <0.100 U Praseodymium (Pr): <0.100 U Tungsten (W): <0.100 U Bromide (Br): <10.000 U Lead (Pb): <0.040 U Rubidium (Rb): 1.120 Uranium (U): 1.640 Cadmium (Cd): <0.100 U Lithium (Li): 1.880 J Silver (Ag): <0.100 U Vanadium (V): 1.730 Cerium (Ce): <0.100 U Mercury (Hg): NR Selenium (Se): 0.380 J Zinc (Zn): 7.640 Zirconium (Zr): <0.100 U Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 236.62 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 344.7 Hardness as CaCO3: 201.82 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): 399 Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 413.3 Alkalinity as CaCO3 (mg/L): 191.38 Phosphorus, TD (mg/L): <0.010 U Field pH: 8.62 Ryznar Stability Index: 6.505 Field Nitrate (mg/L): NR Lab pH: 8.45 Sodium Adsorption Ratio: 0.245 Field Dissolved O2 (mg/L): NR Water Temp (°C): 13.7 Langlier Saturation Index: 0.973 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) 0.600 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.