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Boiler Compliance Requirements

The air emissions from many types and sizes of boilers are regulated by the Clean Air Act (CAA). The U.S. Environmental Protection Agency (U.S. EPA) finalized changes to Clean Air Act standards for area source boilers (40 CFR 63, subpart JJJJJJ) in 2016, and for major source boilers (40 CFR 63, subpart DDDDD) in 2015.

A major source is defined as a plant site emitting or having the potential to emit (PTE) any single hazardous air pollutant (HAP) at a rate of 10 tons or more per year or any combination of HAPs at a rate of 25 tons or more per year. An area source of HAP emissions is any source with potential emissions less than the major source thresholds for HAPs.

Additionally, Compliance and Technical Assistance Program (CTAP) staff are available to provide confidential phone and on-site assistance regarding these requirements.

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