Skip to content
AirPermitHub

AL · EPA Region 4

Alabama Air Permits

ADEM's Air Division issues minor source construction permits, PSD and nonattainment NSR permits, Synthetic Minor Operating Permits (SMOP), and Title V Major Source Operating Permits (MSOP) statewide, except where Jefferson County and the City of Huntsville run local permit programs. ADEM has not established a list of exempt source types or sizes; the need for a permit is decided case by case.
Verified against agency sourceLast reviewed 2026-10-25

Air permits & authorizations

  • No general exemption list

    Exemption

    ADEM states it has not established a list of source types or sizes that are exempt from permitting; permit necessity is determined case by case. Title V trivial and insignificant activity lists apply only at major sources.

    Official page

  • Air Permit (Minor Source)

    Minor NSR

    Construction/operating permit for minor sources. Does not expire.

    ADEM Admin. Code r. 335-3-14-.01Official page

  • Synthetic Minor Operating Permit (SMOP)

    State Operating

    Operating permit with enforceable limits that keep a source below major source thresholds. Does not expire.

    ADEM Admin. Code r. 335-3-15-.03Official page

  • Acid Rain Permit

    Other

    Five-year term.

    ADEM Admin. Code ch. 335-3-18Official page

  • Gasoline Transporter Air Permit

    Other

    Permit does not expire, but the Air Sticker must be renewed annually.

    ADEM Admin. Code r. 335-3-6-.20Official page

Major NSR (PSD & nonattainment)

  • Air Permit (NSR/PSD)

    PSD

    For projects that are major sources by themselves or exceed significance levels at existing major sources in attainment areas. Requires BACT and ambient air quality modeling.

    ADEM Admin. Code r. 335-3-14-.04Official page

  • Nonattainment NSR

    Nonattainment NSR

    For major projects in nonattainment areas. Requires LAER and emission offsets.

    ADEM Admin. Code ch. 335-3-14Official page

Title V operating permits

  • Major Source Operating Permit (MSOP)

    Title V

    Title V permit consolidating applicable requirements for major sources into one document. Five-year renewable term; ADEM states there are no permit fees for MSOP issuance.

    ADEM Admin. Code r. 335-3-16-.03Official page

Oil & Gas

ADEM's air permitting page lists no oil-and-gas-specific air permit. Oil and gas facilities use the standard minor source, SMOP, PSD, or MSOP paths; federal NSPS (40 CFR 60 Subparts OOOO/OOOOa/OOOOb) and NESHAP (40 CFR 63 Subpart HH) apply where applicable.

    Oil & Gas industry hub

    State air regulations

    • ADEM Admin. Code Division 335-3Air Pollution Control Program (full text)
    • 335-3-14Air Permits (minor, PSD, nonattainment)
    • 335-3-15Synthetic Minor Operating Permits
    • 335-3-16Major Source Operating Permits (Title V)
    • 335-3-18Acid Rain Program
    • 335-1, Schedule APermit fees

    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

    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