Owners or operators of industrial sources that emit pollutants to the atmosphere need to get an air permit. A permit protects public health and the environment by requiring that owners or operators comply with all applicable state and federal air regulations. The DNR provides assistance to businesses, industry and the public to help better understand air permits, including when a permit is needed, the review process, applicable regulations, air quality modeling requirements and how to apply for a permit.
- Business resources
- Understanding air permits