Each facility that is a major source of air pollution, has the potential to emit specific pollutants above a certain threshold, or falls into a specific category is required by the federal Clean Air Act (CAA) to obtain a Title V Operating Permit, which consolidates all air pollution control approvals, permits and requirements into a single enforceable document.  Most Operating Permits are issued by state permitting authorities. More...

About the Massachusetts Operating Permit Program

The Department of Environmental Protection (MassDEP) is the authority that issues Title V Operatiing Permits in Massachusetts.
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Massachusetts Facilities with Operating Permits

More than 140 facilities in the state are subject to Title V Operating Permit requirements. 
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MassDEP Operating Permit Application & Modification Forms

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MassDEP Regional Contacts for Operating Permit Information

If you have questions about a specific facility, contact the appropriate MassDEP regional office.
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U.S. Environmental Protection Agency (EPA)

Clean Air Act
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Title V Operating Permits
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