The federal Clean Air Act (CAA) Amendments of 1990 required that each state develop a Title V Operating Permit Program, with a goal of compiling into a single document all of an individual facility's air pollution control approvals, permits and requirements. 

In Massachusetts, the Department of Environmental Protection (MassDEP) implemented its Operating Permit & Compliance Program (see 310 CMR 7.00: Appendix C) to meet this mandate and is the issuing authority.

Operating Permit requirements apply to:

  • Existing facilities with the potential to emit:
    • 50 or more tons per year of volatile organic compounds (VOC),
    • 50 or more tons per year of nitrogen oxides (NOx),
    • 10 or more tons per year of a single Hazardous Air Pollutant (HAP), 25 or more tons per year of combined HAPs, or
    • 100 or more tons per year of any other pollutant.
  • Other facilities that do not exceed the above thresholds but are subject to certain federal requirements, as determined by the U.S. Environmental Protection Agency (EPA).

Operating Permits are facility-wide in scope and are valid for up to five years. See Operating Permit & Reporting Forms for additional information.  

Recommended Content

People also viewed...

You recently viewed...

Personalization is OFF. Your personal browsing history at is not visible because your personalization is turned off. To view your history, turn your personalization on.

Learn more on our .

*Recommendations are based on site visitor traffic patterns and are not endorsements of that content.