Air Resources and Publications

Opportunity for public comments.

Guidance Documents

Guidance Specific to Engines

  • Inclusion in Applications - When to include portable engines in Air Emission License applications.
  • Modeling Guidance - When to exempt stationary internal combustion engines from a modeling analysis if used for maintenance, stand-by, or emergency use.
  • Very Small Engines - Guidance on requirements for stationary engines smaller than licensing thresholds

Additional Compliance Resources are available on our Air Compliance webpage.