Eastern Technical Associates provides public Method 9 opacity certification programs in Des Moines. Select our Iowa smoke school location below to learn more about the 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.

April 15-16, 2025

Des Moines, IA Smoke School

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

  • Tuesday & Wednesday, April 15 & 16, 2025
  • 8:00 a.m. Registration & 8:30 a.m. Start
  • Hidden Valley Soccer Complex
    1875 Walnut Woods Drive
    West Des Moines, IA 50265
More Details

Learn More About Iowa Smoke School Programs

Eastern Technical Associates is the smoke school that people in Iowa trust for EPA Method 9 opacity certification. Give us a call today at (919) 878-3188  to speak with a visible emissions expert.