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AirPermitHub

RI · EPA Region 1

Rhode Island Air Permits

RI DEM's Office of Air Resources issues preconstruction permits under Air Pollution Control Regulation No. 9 (250-RICR-120-05-9): minor source permits (with exemptions, general permits, temporary permits, and expedited processing), major source permits in nonattainment areas, and PSD permits in attainment areas. Operating permits for major sources are issued under Regulation No. 29 (250-RICR-120-05-29), with fees under Regulation No. 28. Rhode Island's VOC and NOx major source threshold under Regulation 29 is lower than the federal default (see the Title V entry). There are no local air agencies.
Verified against agency sourceLast reviewed 2026-10-25

Air permits & authorizations

  • Minor source permit exemptions

    Exemption

    Sources below the 9.7.1 applicability thresholds, or listed in the exemptions in 9.7.2, do not need a minor source permit.

    250-RICR-120-05-9, §9.7.2Official page
  • Registration of Air Pollution Control Equipment

    Registration / Notice

    DEM registration form for air pollution control equipment (see Applications & Forms).

  • Minor Source Permit (preconstruction)

    Minor NSR

    Required before constructing, installing, or modifying a source meeting any applicability criterion in 9.7.1(A). Includes expedited processing options (9.7.8, 9.7.9) and temporary permits (9.7.7).

    Quoted verbatim from the agency source
    Residual oil or solid fossil fuels: having a heat input capacity of one million Btu or more per hour; other liquid fuels: having a heat input capacity of five (5) million Btu or more per hour; gaseous fuel: having a heat input capacity of ten (10) million Btu or more per hour; alternative fuels: having a heat input capacity of one (1) million Btu or more per hour; emergency or distributed generators: with a heat input capacity of 350,000 BTUs or more per hour or, in the case of internal combustion engines, is 50 HP or larger; emits or has the potential to emit, in the aggregate, twenty-five (25) tons per year [of HAPs]; other sources: having the potential to emit one hundred (100) pounds or more per day, or ten (10) pounds or more per hour
    250-RICR-120-05-9, §9.7Official page
  • General Permit for an Emergency Generator

    General Permit

    General permits (GPEG series) issued under Regulation No. 9 for stationary emergency generators, with conditions such as a 500-hour per 12-month operating limit for emergency, maintenance, and testing use and ultra-low sulfur diesel (per an example GPEG permit). Regulation 9 provides for general permits at 9.7.5-9.7.6.

    250-RICR-120-05-9, §9.7.5-9.7.6Official page

Major NSR (PSD & nonattainment)

  • Major Source Permits in Nonattainment Areas

    Nonattainment NSR

    Preconstruction permits for new major sources and major modifications in nonattainment areas (LAER, offsets). Rhode Island is in the Ozone Transport Region.

    250-RICR-120-05-9, §9.8Official page
  • Major Source Permits in Attainment or Unclassifiable Areas (PSD)

    PSD

    Preconstruction permits for new major sources and major modifications in attainment/unclassifiable areas (BACT).

    250-RICR-120-05-9, §9.9Official page

Title V operating permits

  • Operating Permit (Title V)

    Title V

    For major sources. New sources apply within 12 months of becoming subject (or within 12 months of commencing operation for sources needing a 112(g) or Part 9 permit); renewals at least 12 months before expiration. Term up to five years (fixed five years for Acid Rain sources). Insignificant activities are listed in §29.20. Fees under Regulation No. 28.

    Quoted verbatim from the agency source
    ten (10) tons per year (tpy) or more of any hazardous air pollutant ... one hundred (100) tpy or more of any air pollutant subject to regulation including any fugitive emissions ... fifty (50) tpy or more of volatile organic compounds or oxides of nitrogen including any fugitive emission
    250-RICR-120-05-29Official page

Oil & Gas

Rhode Island has no oil and gas production. Bulk gasoline terminals and fuel-burning equipment are covered by the general Regulation 9 and Regulation 29 requirements.

    Oil & Gas industry hub

    State air regulations

    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: Applicability thresholds quoted from the Regulation 9 text on the RI Secretary of State site (bracketed text added for context). DEM does not list a Title V application form online; contact the Office of Air Resources. Office of Air Resources: 401-222-2808, DEM.AirPermits@dem.ri.gov.

    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