Notices for New BACT Determinations

The public participation process in BACT determinations was enhanced to include technical review and comments by a focused Scientific Review Committee (SRC) at periodic intervals, prior to the updates of the South Coast AQMD BACT Guidelines. At the same time, a 30-day notice period has been established for the SRC and interested persons to review and comment on South Coast AQMD BACT determinations that result in BACT requirements that are more stringent than previously imposed BACT, the following are notices of new BACT determinations that are more stringent than prior BACT requirements by South Coast AQMD.

Recent BACT Notices:

BACT SCIENTIFIC REVIEW COMMITTEE MEETING

June 4, 2025 | 10:00 a.m. - 12:00 p.m.
(More Information)

The Agenda and Presentation are available:
www.aqmd.gov/home/permits/bact/public-notices-docket

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The latest round of BACT Guideline updates were approved by the Board
on February 2, 2024.
The Presentation is available here. 

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To obtain a permit from South Coast AQMD, owners and/or operators of equipment that emits air contaminants may be required to comply with the new source review (NSR) requirements of South Coast AQMD's Regulation XIII or Rule 2005 (PDF). One possible requirement is the application of Best Available Control Technology (BACT).

What's New! To receive notices of BACT Scientific Review Committee meetings and new BACT determinations, please sign up for South Coast AQMD's News reports.

If you have any questions or comments, please contact: BACT Team

The BACT Guidelines are in the process of periodic updates as new BACT determinations and Guidelines are established.