Ground-Water Information Center Water Quality Report Site Name: PC DEVELOPMENT - COBBLESTONE 
Report Date: 3/28/2024 Compare to Water Quality Standards

Location Information
Sample Id/Site Id: 2009Q0188 / 214910 Sample Date: 8/19/2008 9:07:00 AM
Location (TRS): 01S 04E 04 ADAA Agency/Sampler: MBMG / DCM
Latitude/Longitude: 45° 47' 1" N 111° 13' 36" W Field Number: 214910
Datum: NAD83 Lab Date: 10/29/2008
Altitude: 4419.66 Lab/Analyst: MBMG / SM
County/State: GALLATIN / MT Sample Method/Handling: GRAB / 4230
Site Type: WELL Procedure Type: DISSOLVED
Geology: 111SNGR Total Depth (ft): 58
USGS 7.5' Quad: BELGRADE SWL-MP (ft): 39.79
PWS Id: Depth Water Enters (ft): 58
Project: GWCP08, BWIP4CSWL1, GWAAMON, 
BWIPMN, BWIP4C, BWIP4CCHEM, GALVAL, 
STATHYDROGRAPH, STATYTDLINE
Major Ion Results
mg/L meq/L mg/L meq/L
Calcium (Ca) 49.000 2.445 Bicarbonate (HCO3) 183.700 3.011
Magnesium (Mg) 15.500 1.275 Carbonate (CO3) 0.000 0.000
Sodium (Na) 6.360 0.277 Chloride (Cl) 10.500 0.296
Potassium (K) 2.200 0.056 Sulfate (SO4) 31.200 0.650
Iron (Fe) 0.010 0.000 Nitrate (as N) 2.84 P 0.203
Manganese (Mn) <0.001 0.000 Fluoride (F) 0.153 0.008
Silica (SiO2) 18.800 Orthophosphate (as P) <0.05 0.000
Total Cations 4.063 Total Anions 4.168
Trace Element Results (µg/L)
Aluminum (Al): <0.94 Cesium (Cs): <0.04 Molybdenum (Mo): <1.0 Strontium (Sr): 301.000
Antimony (Sb): <0.11 Chromium (Cr): <0.07 Nickel (Ni): 0.280 Thallium (Tl): <0.1
Arsenic (As): 0.357 Cobalt (Co): <0.07 Niobium (Nb): <0.03 Thorium (Th): <0.005
Barium (Ba): 77.900 Copper (Cu): 0.507 Neodymium (Nd): <0.22 Tin (Sn): <0.06
Beryllium (Be): <0.15 Gallium (Ga): <0.07 Palladium (Pd): 0.548 Titanium (Ti): 0.236
Boron (B): 28.400 Lanthanum (La): <0.84 Praseodymium (Pr): <0.16 Tungsten (W): <0.05
Bromide (Br): <500 Lead (Pb): <0.56 Rubidium (Rb): <1.0 Uranium (U): 1.200
Cadmium (Cd): <0.13 Lithium (Li): 3.590 Silver (Ag): <0.07 Vanadium (V): 0.344
Cerium (Ce): <0.53 Mercury (Hg): NR Selenium (Se): <0.38 Zinc (Zn): <0.27
Zirconium (Zr): <0.11
Field Chemistry and Other Analytical Results
**Total Dissolved Solids (mg/L): 224.14 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR
**Sum of Diss. Constituents (mg/L): 317.5 Hardness as CaCO3: 186.15 T.P. Hydrocarbons (µg/L): NR
Field Conductivity (µmhos): 415 Field Alkalinity as CaCO3 (mg/L): 136 PCP (µg/L): NR
Lab Conductivity (µmhos): 414 Alkalinity as CaCO3 (mg/L): 150.91 Phosphorus, TD (mg/L): <0.03
Field pH: 6.97 Ryznar Stability Index: 8.052 Field Nitrate (mg/L): 2.000
Lab pH: 7.21 Sodium Adsorption Ratio: 0.1914 Field Dissolved O2 (mg/L): 7.200
Water Temp (°C): 11.2 Langlier Saturation Index: -0.421 Field Chloride (mg/L): NR
Air Temp (°C): NR Nitrite (mg/L as N): NR Field Redox (mV): 40
Nitrate + Nitrite (mg/L as N) NR Hydroxide (mg/L as OH): NR 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) NR 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.