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Permits to Install (PTI) / New Source Review (NSR)

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Environment, Great Lakes, and Energy

Permits to Install (PTI) / New Source Review (NSR)

Rule 201 of the Michigan Air Pollution Control Rules requires a person to obtain an approved Permit to Install for any potential source of air pollution unless the source is exempt from the permitting process. Does your business have paint or other coating application booths, storage tanks, printing presses, boilers, soil remediation projects, plating operations, degreasers, ovens, or any other process that may emit air pollution? If so, your facility may need to complete an air use permit to install application.

Upcoming workshops

Nov 18

PTI workshop

Deborah A. Stabenow Building

Facility Specific Information

  • Viant Medical, Inc.

    Facility specific information

    The Air Quality Division shares information about facilities regulated by state and federal air quality regulations in Michigan. This information includes but is not limited to, Permits to Install (PTI), Renewable Operating Permits (ROP), inspection reports, stack test reports, and enforcement documents. This information can be found in MiEnviro Portal.

     The Air Quality Division provides access to facility-specific pages for locations identified as having significant community interest. These pages offer detailed information on emissions, permitting activity, compliance status, and opportunities for public engagement. They are designed to support transparency and informed participation in environmental oversight. This information can be found at the Facilities of community interest webpage.

    Facility-specific information prior to December 10, 2024

Ozone Non-Attainment New Source Review

Non-attainment New Source Review may be required in the permitting of new or modified sources of air emissions located in the non-attainment areas. To be subject to these regulations, facilities in serious non-attainment areas must have a potential to emit greater than 50 tons per year of volatile organic compounds (VOC) or oxides of nitrogen (NOx), which are precursors for ozone. VOC and NOx are regulated under Prevention of Significant Deterioration (PSD) and Non-Attainment New Source Review (NSR) Regulations. Non-Attainment New Source Review requires that a company demonstrate that the proposed project meets the Lowest Achievable Emission Rate (LAER), provides offsets for each precursor at a ratio of 1 to 1.2, and conducts an alternative site analysis. In addition to those requirements, all sources in the state owned by that entity must be in compliance. The Air Quality Division has provided some resources below for facilities preparing an application for Non-Attainment New Source Review.

If you are preparing a PTI application that includes Non-Attainment New Source Review, it is recommended that you schedule a pre-application meeting. Please contact Cindy Smith to schedule a pre-application meeting or to ask any questions regarding Non-Attainment New Source Review applications.

Contact information

Cindy Smith at SmithC17@Michigan.gov or 517-648-8404.

For general questions, please contact us at EGLE-Assist@Michigan.gov or 800-662-9278.

For small businesses, the Clean Air Assistance Program is also available for assistance.