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Regulation 5: Open Burning - 2025 Amendment (Conceptual)
Learn about the Air District's development process for amending Regulation 5: Open Burning.
Find out about the status and anticipated timeline of the rule development process. Information on hearings, workshops, and other events is provided below, along with supporting documents and materials.
The Air District held two virtual workshops on amendments to woodsmoke rules. A workshop on amendments to Regulation 5: Open Burning was held on June 2, 2025. A workshop on amendments to Regulation 6: Particulate Matter, Rule 3: Woodburning Devices was held on June 3, 2025. Recordings and materials from the workshops are available in the “Hearings, Workshops and Other Events” table at the bottom of this webpage.
Background
Regulation 5: Open Burning is designed to reduce harmful air pollution from open burning activities, which can release fine particulate matter and toxic air contaminants into the air we breathe. Air District staff consider woodsmoke as an important source to evaluate as it represents over 10 percent of the fine particulate matter (PM2.5) emissions in the region on an annual basis with an even greater impact during the winter. The Air District most recently amended Regulation 5 in 2019 to exempt public agencies from paying Open Burning Fees when conducting prescribed burns for the purpose of wildfire prevention. Planned amendments in 2025 would expand fee exemptions for all prescribed burns for wildfire prevention to support regional and statewide efforts for wildfire mitigation.
Upcoming Activity
Air District staff are currently planning amendments to two woodsmoke rules: Regulation 5: Open Burning and Rule 6-3: Particulate Matter – Woodburning Devices. Planned amendments to Regulation 5 would expand fee exemptions for all prescribed burns for wildfire prevention. Details can be found on the Woodsmoke Rule Amendment webpage.
The Air District held two virtual public workshops to provide the public with an opportunity to learn about, discuss, and comment on the planned amendments to Regulation 5 and Rule 6-3.
- The Regulation 5 (open burning) workshop was held virtually via webcast on June 2, 2025, from 6:00 to 7:30 PM.
- The Rule 6-3 (woodburning devices) workshop was held virtually via webcast on June 3, 2025, from 6:00 to 8:00 PM.
Recordings and materials from the workshop are available in the 'Hearings, Workshops and Other Events' table below.
Staff intend to propose rule amendments to the Air District Board of Directors in time for implementation before the 2025 burn season (late 2025).
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Hearings, Workshops and Other Events
Throughout the rule development process, we provide information on upcoming and past workshops, hearings, and other events.
Documents
Supporting materials, such as staff reports, regulatory language, and other technical documents related to rule development, are posted throughout the development process.
Comments
The Air District provides opportunities for the public to submit comments throughout the development process, and posts comments received during the open public comment periods.
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Last Updated: 6/9/2025