Minor Sources of air emissions are regulated under Chapter 115 of the Department's Regulations.
Minor sources include facilities with Potential to Emit less than the following:
50 ton per year VOC
10 ton per year of single Hazardous Air Pollutant
25 ton per year of all Hazardous Air Pollutants combined
100 ton per year of any other regulated pollutant
Chapter 115 (Minor Source) Standard Application Materials
- General Information
- Chapter 115 License Application (Adobe fill-in form, preferred)
- Chapter 115 License Application (MSWord)
- Application Instructions
- Public Notice of Intent to File (for all renewal, new source, or modification applications)
- Air Emission License Revised fee schedule
- Public Notice of Draft License Availability (for major modifications and major new sources only)
Mineral Processing Application Materials
The following application materials are specific to the mineral processing industry and may be used by any facility wishing to obtain a standard Chapter 115 license for rock crushers, asphalt plants, and concrete batch plants. For information on obtaining a Rock Crusher General Permit or a Concrete Batch Plant General Permit please see our web pages devoted to these application types.
- Mineral Processing Chapter 115 Application
- Mineral Processing Instructions
- Public Notice of Intent to File
Chapter 115 Minor Revision Application
For a Minor Revision, the application submission shall consist of a letter requesting the Minor Revision with the reason for the request, and any relevant information such as description of the revision and any emission calculations. the signatory sheet signed by a responsible official shall be included in the submittal.
Chapter 115 License Transfer Application
Sources with the potential to emit air pollutants greater than major source thresholds are required to take federally enforceable emission limitations and/or operation caps in order to be exempt from major source (Title V) licensing requirements.
Applications for new sources and minor and major modifications to existing sources require a Best Available Control Technology (BACT) analysis. A BACT analysis is a topdown analysis reviewed on a case-bycase basis taking into account energy, envirionmental, and economic impacts. Download NESCAUM's BACT Guideline for a detailed explanation.
Complete air emission license applications should be mailed to:
DEPARTMENT OF ENVIRONMENTAL PROTECTION
Bureau of Air Quality
17 State House Station
Augusta, Maine 04333-0017
If you have any questions regarding the application or information, please contact air emission licensing staff at the above address or telephone (207)287-2437. The Bureau of Air Quality's fax number is (207)287-7641.