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Permits to Install (PTI) / New Source Review (NSR)
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.
Getting started in MiEnviro Portal
User guides
- Michigan Permit to Install Guidebook
- PTI guidance for crushing plants
- Crushing plant relocation
- Correction requests
- Equipment inventory forms
Webinar recordings
- Introduction to MiEnviro for Air: Air Permitting and Compliance
- MiEnviro for Air - Permit to Install (PTI) Part 1: Introduction to the PTI Submission Package
- MiEnviro for Air - Permit to Install (PTI) Part 2: Submission Package Forms
- MiEnviro for Air - Permit to Install (PTI) Part 3: General PTI Submission Packages
- MiEnviro for Air - Permit to Install (PTI) Part 4: Nonmetallic Mineral Crusher Permits and Relocation Notices
Facilities of public interest
The Air Quality Division shares information about facilities regulated by state and federal air quality regulations in Michigan through MiEnviro Portal Site Explorer.
This information includes but is not limited to, Permits to Install (PTI), Renewable Operating Permits (ROP), inspection reports, stack test reports, and enforcement documents. Lists of historical information, pre-December 10, 2024 is still available.
Application / PTI Information
Forms, Instructions, and Procedures
Forms, Instructions, and Procedures
Other Guidance and Information
Other Guidance and Information
- Ozone Nonattainment (Workgroups, Planning, etc.)
- Environmental Consultant Assistance
- Modeling and Meteorology
- PTI Application Workshop Series
- PTI Technical Assistance Resources
- Boiler NESHAP Navigation Tool
- USEPA RICE MACT Navigation Tool
- Air Permitting - Potential to Emit
- Air Quality Division Delegations
Laws and Rules
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.