AMBIENT AIR QUALITY MONITORING 



Responsible Agency: State of Montana 



Air Quality Bureau 



No. on Map 

 1 



Location 



International 

 Boundary 



Hanrahan 



Parameters 



Sulfur dioxide 

 Suspended particulates 

 Fine particulates 

 Sulfation rate 



Sulfur dioxide 

 Suspended particulates 

 Fine particulates 

 Wind speed 

 Wind direction 

 Temperature 

 Sulfation rate 



Sulfur dioxide 

 Suspended particulates 



Suspended particulates 

 Sulfation rate 



Sulfation rate 



Sulfation rate 



Sulfation rate 



Sulfation rate 



Sulfation rate 



Sampling Frequency 

 and Reporting 



Hourly averages 

 24-hour averages 

 24-hour averages 

 Monthly averages 



Hourly averages 

 24-hour averages 

 24-hour averages 

 Hourly averages 

 Hourly averages 

 Hourly averages 

 Monthly 



Hourly averages 

 24-hour averages 



24-hour averages 

 Monthly averages 



Monthly averages 



Monthly averages 



Monthly averages 



Monthly averages 



Monthly averages 



Sulfur Dioxide EPA Equivalent Method EQSA-0276-009 



Total Suspended EPA Reference Method CFR Title 40 Part 50, Appendix B 

 (State of Montana QA Manual Section 1.1.10 and 1.2.10) 

 24-hour sample once/6 days 



Sulfation Rate Methods of Air Sampling and Analysis, 2nd Edition, 



"Tentative Method of Analysis of the Sulfation Rate of 

 the Atmosphere (Lead Dioxide Plate Method - Turbidimetric 

 Analysis), p. 691. 



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