Air Permits, Licenses, Certifications
Maine DEP can now accept online credit card payments through a Credit Card Payment Portal. Please note: not all license types are available for electronic payment, the portal can only accept payments of $5,000 or less, and the servicer of the portal charges a $2 transaction fee. See the Payment Portal for more details.
The Maine Department of Environmental Protection licenses air emission sources throughout the state. Licensing staff are available to answer licensing questions. Below is information on obtaining an air emission license and resources such as lists of currently licensed sources. For more information, contact Jane Gilbert 207-530-0554.
Minor Sources Applications & Guidance - Download license applications and guidance documents.
- List of Minor Source Licenses - View a list of minor source licenses; download finalized minor source licenses.
Download applications and guidance documents.
- NonMetallic Mineral Processing Plants (Rock Crushers) Chapter 149
- Concrete Batch Plants Chapter 164
- Class IV-A Incinerators Chapter 165
Boat Building and Repair Facilities
DEP has developed a self-assessment tool for facilities that perform boat building and repair activities. This tool helps facilities track production activities and determine if a license may be required.
There are two parts to the tool:
If you have any questions, please contact Air Licensing Staff at (207) 287-7688 or DEP-Air-Licensing-Help@maine.gov. You may also contact the Office of Assistance at (800) 789-9802 or (207) 287-7881.