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AirPermitHub

MI · EPA Region 5

Michigan Air Permits

Michigan requires a Permit to Install (PTI) before installing, relocating, modifying, or reconstructing equipment that emits air contaminants (R 336.1201), unless an exemption in Part 2 applies. PTIs are free and do not expire. General PTIs exist for a few categories. Major sources need a Renewable Operating Permit (ROP), Michigan's Title V program (R 336.1210-1218). Part 18 (PSD) mirrors 40 CFR 52.21 and Part 19 covers nonattainment NSR.
Verified against agency sourceLast reviewed 2026-10-25

Air permits & authorizations

  • PTI exemptions

    Exemption

    Part 2 rules exempt insignificant sources (e.g., welding, natural gas-fired furnaces of 50 million Btu/hr or less). See EGLE's Permit to Install Exemption Handbook.

    Mich. Admin. Code R 336.1280-336.1291 (Part 2)Official page

  • General Permits to Install

    General Permit

    Available categories: anhydrous ammonia storage/handling, natural gas-fired burn-off ovens, nonmetallic mineral crushing plants, propane or natural gas-fired boilers, and gasoline/petroleum remediation processes. Coating line, diesel generator, and EtO sterilizer general PTIs are suspended or unavailable.

    Official page

  • Permit to Install (PTI)

    Minor NSR

    Required before installing, relocating, modifying, or reconstructing emitting equipment. Free and does not expire; may limit potential to emit to create synthetic minor status.

    Mich. Admin. Code R 336.1201Official page

Major NSR (PSD & nonattainment)

  • PSD (Part 18)

    PSD

    Mirrors 40 CFR 52.21, including PAL options and actual-to-projected-actual tests.

    Thresholds (summarized from source, not a quotation)

    Per EGLE guide: major stationary source is 100 tpy or more of an NSR pollutant for listed categories, or 250 tpy or more otherwise.

    Mich. Admin. Code Part 18Official page

  • Nonattainment NSR (Part 19)

    Nonattainment NSR

    Major sources affecting nonattainment areas.

    Thresholds (summarized from source, not a quotation)

    Per EGLE guide (tpy): VOC and NOx 100 marginal/moderate, 50 serious, 25 severe, 10 extreme; PM10 100 moderate, 70 serious; CO 100 moderate, 50 serious.

    Mich. Admin. Code Part 19Official page

Title V operating permits

  • Renewable Operating Permit (ROP)

    Title V

    Michigan's Title V permit; also required for acid rain and waste incineration facilities. Does not replace PTIs.

    Thresholds (summarized from source, not a quotation)

    Per EGLE guide: 100 tpy of any regulated air contaminant; 10 tpy single HAP; 25 tpy combined HAPs.

    Mich. Admin. Code R 336.1210-336.1218Official page

Oil & Gas

EGLE's general PTI list has no oil-and-gas category, and the EGLE regulatory guide has no dedicated oil and gas section. Oil and gas facilities follow PTI/ROP rules; EGLE provides a NESHAP initial notification form for oil and natural gas production facilities (40 CFR 63 Subpart HH).

  • NESHAP initial notification: Oil and Natural Gas Production Facilities

    Other

    EGLE form EQP3570 for 40 CFR 63 Subpart HH notifications.

    40 CFR 63 Subpart HHOfficial page
Oil & Gas industry hub

State air regulations

  • Mich. Admin. Code R 336.1101 et seq.Michigan Air Pollution Control Rules (Parts 1-19)
  • R 336.1201Permits to Install
  • R 336.1210-1218Renewable Operating Permits

Forms

Guidance

Compliance

State compliance obligations (reporting, emissions inventory, testing) are being indexed. Use the Compliance dashboard preview to see how they will be tracked.

Sources

Editorial note: Exemption rule range (R 336.1280-1291) is the commonly cited Part 2 exemption range and was not confirmed in the guide; see the Exemption Handbook. Michigan has oil and gas production, but no state-specific oil and gas air permit was found on the pages reviewed.

AirPermitHub provides educational, engineering, research, and compliance-support information. Information provided by the platform does not constitute legal advice and should not replace review of applicable regulations, permits, agency guidance, or consultation with qualified professionals. Full disclaimer