Eastern Technical Associates provides public Method 9 opacity certification programs in Helena. Select our Montana smoke school location below to learn more about our class and field locations, lecture information, fees, and agenda.

For students who are seeking online visible emissions training, we do offer a classroom lecture in an online format. Students can access web-based training and participate in the session from the convenience of their own home.

September 25-26, 2024

Helena, MT Smoke School

Visible Emissions Lecture Information

  • Held once per week on Mondays
  • Start time: 9:00 am EST/ 8:00 am CT/ 7:00 am MT/ 6:00 am PT
  • Held virtually via live webinar using Go To Meeting
  • Lecture will be a separate registration from the field. To register for a lecture, visit our lecture webinar page

Field Opacity Certification

  • Wednesday & Thursday, September 25 & 26, 2024
  • 8:00 am Registration & 8:30 am Start
  • Lewis & Clark Fairgrounds
    98 West Custer Avenue
    Helena, MT 59602

More Details

Learn More About Montana Smoke School Programs

Eastern Technical Associates is a trusted Montana smoke school for EPA Method 9 opacity certification. Give us a call today at (919) 878-3188 to speak with a visible emissions expert.