The flow charts available on this page are provided as a guide to help determine what permitting action, if any, is necessary for different types of changes that may occur at a facility that is operating under a Title V (Part 70) permit. If there is uncertainty what course to take regarding changes at your facility contact the Air Branch's Stationary Source Permitting Program.
The flow charts are available only as PDF documents. The first flow chart helps determine if a permit modification is necessary. If a permit modification is necessary, the second flow chart aids in deciding the type of permit modification.
Is a permit modification necessary? - Flow Chart 1
A modification is necessary. What type? - Flow Chart 2
Type of Change, Procedures & Example Letters
- Change in Title V Reporting Deadlines
- Off-Permit Change
- 502(b)(10) Change
- Administrative Amendment
- Minor Modification without Construction
- Minor Modification with Construction
- Significant Modification without Construction
- Significant Modification with Construction
- PSD/NSR Modifications