What is an air contaminant source?
For construction permitting purposes, air contaminant sources typically are classified as major or minor sources depending on their potential to emit pollutants. Major sources generally are:

- Sources that are subject to New Source Performance Standards (NSPS) and have potential total facility emissions greater than 100 tons per year (tpy)
- Sources with potential total facility emissions greater than 250 tpy or more of the following criteria pollutants: carbon monoxide, particulate matter, nitrogen dioxide, sulfur dioxide, lead, and ozone

Minor sources are sources of air contaminants that are not major sources and are not exempt from construction permit requirements. Examples include concrete batch plants, medical waste incinerators, and small surface coating and printing operations.

Show All Answers

1. Who needs a construction permit?
2. What is an air contaminant source?
3. Who needs a Title V Operating Permit?
4. What information for Title V Permits must I provide?