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A common misconception is that every air emission source needs an air permit, however this is not always the case. Ohio EPA has over 60 air permit exemptions, 15 permit-by-rule (PBR) exemptions, and a de minimis exemption for air emission sources that are considered minor.

Michigan Rule 278 does not allow a facility to use the permit exemptions if the project meets specific criteria. These criteria are discussed in Chapter 3.4. A common violation, sometimes requiring the payment of fines and penalties, is the installation of an emission unit without a Permit to .

Contact. Rule 201 of the Michigan Air Pollution Control Rules requires a person to obtain an approved Permit to for any potential source of air pollution unless the source is exempt from the permitting process.

The Air Pollution Control Exemption, PA 451 of 1994, Part 59, as amended, affords a 100% property and sales tax exemption to facilities that are designed and operated primarily for the purpose of controlling or disposing of air pollution that, if released, would render the air harmful or inimical to the public health ...

In summary, just about any industrial or manufacturing process and/or process equipment requires a permit to unless it can be specifically exempted or demonstrated that it does not have the potential to emit an air contaminant. The scope of this guide is the Michigan permit to .