GROUND WATER QUALITY MONITORING 



Storet 

 Code 



Parameter 



Analytical 

 Method 



Sampling Frequency Station No. 



Electrometric Titration 

 Emission Plasma, ICP 

 Emission Plasma 

 Electrometric Titration 

 Ion Chromatography 

 Wheatstone Bridge 

 Emission Plasma, ICP 

 Ion Chromatography 

 Emission Plasma, ICP 

 Emission Plasma, ICP 

 Emission Plasma, ICP 

 Emission Plasma, ICP 

 Emission Plasma, ICP 

 Emission Plasma, ICP 

 Ion Chromatography 

 Eletrometric 

 Emission Plasma, ICP 

 AA 



Emission Plasma, ICP 

 Emission Plasma, ICP 

 Emission Plasma, ICP 

 Ion Chromatography 

 Emission Plasma, ICP 

 Calculated 



Sample collection is annually for all active 

 stations. 



The analytical method descriptions are those of 

 the Montana Bureau of Mines and Geology 

 Laboratory where the samples are analyzed. 



* - Inactive as of 1989 



** - Computer storate and retrieval system — USGS 



SYMBOLS 



AA - Atomic Absorption; ICP - Inductively Coupled Plasma Unit 



