Major Source (Title V)

Major sources of air emissions are regulated under Chapter 140 of the Department's Regulations.

Facilities with the Potential to Emit one or more of the following are major sources:

50 tons per year VOC
10 ton per year of a single Hazardous Air Pollutant
25 ton per year of all Hazardous Air Pollutants combined
100 ton per year of any other regulated pollutant

Application Forms

Chapter 140 License Transfer Application

Complete air emission license application should be mailed to:

Department of Environmental Protection
Air Quality
17 State House Station
Augusta, Maine 04333-0017


Annual Compliance Certification

Major sources that have been issued a Title V Part 70 air emission license are required to submit an annual compliance certification.  Sources are required to submit a certification of compliance with all applicable requirements by a responsible official.  Use the guidance document and template in developing the annual certification. 

Annual compliance certifications must be submitted to US EPA and the Bureau of Air Quality.  Two copies of the compliance certification should be provided to the Department. One copy should be provided to:

Compliance Supervisor
Maine Department of Environmental Protection
Air Quality
17 State House Station
Augusta, Maine 04333-0017

The second copy should be sent directly to your compliance inspector at your local regional office.

US EPA's copy should be sent to the following address:

Compliance Clerk
EPA-New England, Region 1
5 Post Office Sq. Suite 100
Mail Code OES 04-2
Boston, MA 02109-3912

Semiannual and Quarterly Reports

Sources that have been issued a Title V Part 70 air emission license are required to submit semiannual reports to the Bureau of Air Quality.  Semiannual reports contain the same information as Quarterly Reports with the addition of a summary report of deviations and required periodic monitoring (including instrumental monitoring, inspections, and recordkeeping demonstrating compliance with license conditions).   Semiannual reports must indicate all deviations from license requirements and the corrective action taken. 

For sources required to submit both semiannual and quarterly reports, sources may submit one report at each six month interval which meets the requirements of both semiannual and quarterly  reports.  Quarterly reports are still required to be submitted every three months, in-between semiannual reporting. 

The following documents and forms (all presented in Microsoft Word format) have been developed by the Department as guidance: