Title V Air Operating Permits are the Clean Air Act permits that major sources of air pollution must hold to operate. Required by Title V of the 1990 Clean Air Act Amendments and implemented through 40 CFR Part 70 (state programs) and Part 71 (the federal program), a Title V permit gathers every air requirement that applies to a facility into one document, along with the monitoring, recordkeeping and reporting needed to show compliance, including reports at least every six months and an annual compliance certification.
A Title V permit does not usually create new emission limits. Its value is that it puts all of a facility's air obligations in one enforceable place and requires a responsible official to certify compliance. That certification makes Title V a significant legal exposure: a facility that misses a monitoring requirement or fails to report a deviation can face enforcement even if its emissions were within limits.
What Are Title V Air Operating Permits?
Title V operating permits were created so that sources, regulators and the public could see in one document what each major facility must do. Most permits are issued by state and local agencies under EPA-approved programs that meet 40 CFR Part 70. EPA issues permits under Part 71 where there is no approved program, including most of Indian country. EPA's Title V operating permits page describes the program.
A Title V permit is separate from construction permits such as New Source Review and Prevention of Significant Deterioration permits. Construction permits authorize building or modifying a source. The Title V permit then incorporates their conditions along with other applicable requirements.
Who Must Comply?
Under Part 70, the following sources need a Title V permit:
- Major sources as defined in 70.2
- Sources subject to New Source Performance Standards or National Emission Standards for Hazardous Air Pollutants, unless EPA has exempted the source category, which it has done for many smaller area sources
- Affected sources under the Acid Rain Program
- Certain solid waste incineration units
- Any other source category EPA designates
Major source thresholds
- Criteria pollutants: a potential to emit of 100 tons per year or more of any air pollutant subject to regulation
- Hazardous air pollutants: 10 tons per year or more of any single HAP, or 25 tons per year or more of any combination of HAPs
- Nonattainment areas: lower thresholds apply. For example, in ozone nonattainment areas the threshold for volatile organic compounds and nitrogen oxides is 50 tons per year in serious areas, 25 in severe areas and 10 in extreme areas.
Thresholds are based on potential to emit, meaning the maximum capacity to emit under the source's physical and operational design, not actual emissions. Facilities that would otherwise be major often accept enforceable limits on hours, throughput or materials to become "synthetic minor" sources and avoid Title V. Greenhouse gas emissions alone do not make a source major for Title V purposes.
Key Requirements
Permit application (70.5)
A source must submit a complete application within 12 months after it becomes subject to the program, or earlier if the permitting authority requires. The application describes emission units, emissions, applicable requirements, a compliance plan and a compliance certification signed by a responsible official. A source that submits a timely and complete application may generally continue operating until the permit is issued, often called the application shield.
Permit term and renewal
Under 70.6, permits have a fixed term of no more than 5 years. Acid Rain affected sources receive a 5-year term, and certain solid waste incineration units may receive up to 12 years with review at least every 5 years. Renewal applications are due at least 6 months before the permit expires, or earlier, up to 18 months, if the permitting authority requires.
Monitoring and records (70.6(a)(3))
Each permit must contain monitoring sufficient to yield reliable data showing compliance, including any Compliance Assurance Monitoring required by 40 CFR Part 64 for units with control devices. Records of required monitoring, including calibration and maintenance records, original data and copies of reports, must be kept for at least 5 years.
Six-month monitoring reports (70.6(a)(3)(iii)(A))
The permittee must submit reports of required monitoring at least every 6 months. All deviations must be clearly identified, and the reports must be certified by a responsible official.
Prompt deviation reporting (70.6(a)(3)(iii)(B))
Deviations from permit requirements, including those caused by upsets, must be reported promptly with the probable cause and any corrective or preventive actions. The permitting authority defines "prompt" in each permit, often by the type and severity of the deviation.
Annual compliance certification (70.6(c)(5))
At least once a year, or more often if the permit requires, the responsible official must certify compliance with all permit terms and conditions. The certification identifies each term, the method used to determine compliance, whether compliance was continuous or intermittent, and each deviation. It goes to both EPA and the permitting authority.
Permit shield and flexibility
A permit may include a permit shield stating that compliance with the permit is deemed compliance with specifically identified requirements. Permits may also allow alternative operating scenarios and certain emissions trading without a permit revision, if the permit provides for them.
Emergency affirmative defense
EPA removed the emergency affirmative defense provisions from Parts 70 and 71 in 2023. After a federal appeals court found that rule unlawful, EPA restored the provisions in a June 2026 action. State programs that had removed their own provisions may decide whether to reinstate them, so facilities should check their state's current rules and their permit language.
Public and EPA Review
Draft permits and significant modifications go through public notice with at least 30 days for comment. EPA then has 45 days to review a proposed permit and may object. If EPA does not object, any person may petition EPA within 60 days after the review period ends. Changes to permitted sources are handled as administrative amendments, minor modifications or significant modifications depending on their scope.
Penalties and Enforcement
Violating a Title V permit is a violation of the Clean Air Act. EPA and state agencies can bring administrative, civil and criminal enforcement, and Clean Air Act civil penalties are adjusted annually for inflation. Knowingly making false statements in certifications or reports can lead to criminal penalties. Citizen suits are also available under the Clean Air Act. Common enforcement findings include missed monitoring, late or incomplete deviation reports and inaccurate compliance certifications.
Common Compliance Mistakes
- Treating the permit as a filing exercise instead of an operating document
- Missing periodic monitoring, such as visible emissions checks or parameter readings, during busy periods or turnover
- Failing to identify and report deviations in the six-month report and annual certification
- Making physical or operational changes without checking whether a permit modification is required
- Exceeding synthetic minor limits without tracking rolling totals
- Submitting renewal applications late and losing the application shield
How to Comply: Step by Step
- Determine applicability. Calculate potential to emit for criteria pollutants and HAPs and check whether any NSPS or NESHAP applies.
- Build a requirements register. Break the permit into individual conditions with owners, frequencies and evidence needed.
- Schedule monitoring. Put every inspection, reading, test and calibration on a calendar with reminders.
- Track deviations. Record deviations as they happen and report them within the permit's prompt-reporting deadline.
- Prepare reports on time. Compile six-month monitoring reports and the annual certification with supporting records.
- Manage change. Review planned equipment and process changes for permit impacts before they happen.
- Retain records. Keep monitoring data and reports for at least 5 years.
How SMS360 Helps
SMS360's Compliance Management module helps facilities turn permit conditions into a tracked register of obligations with owners, due dates and reminders. Management of Change records reviews of planned changes for permit impacts, and the Document Library stores permits, reports and certifications. Facilities can coordinate related programs such as EPA Risk Management Program and TRI reporting in the same system.
Frequently Asked Questions
What makes a facility a major source under Title V?
Generally, a potential to emit of 100 tons per year of any regulated air pollutant, 10 tons per year of a single hazardous air pollutant or 25 tons per year of combined HAPs. Lower thresholds apply in many nonattainment areas.
How often are Title V reports due?
Monitoring reports are due at least every 6 months, and compliance certifications at least annually. Deviations must be reported promptly as defined in the permit.
How long does a Title V permit last?
No more than 5 years. Renewal applications are due at least 6 months before expiration, or earlier if the permitting authority requires.
Can a facility avoid Title V?
Some can, by accepting federally enforceable limits that keep potential to emit below major source thresholds. These synthetic minor limits must be tracked and followed carefully.
