Scientific Review Committee

BACT Scientific Review Committee


November 3, 2021 | 2:00 p.m. - 4:00 p.m.

Remote Meeting has been scheduled to present proposed Lowest Achievable Emissions Rate for Stationary, Emergency IC Engines ≥ 1000 BHP.


Pursuant to Assembly Bill 361

BACT Scientific Review Committee Meeting will only be conducted via video conferencing and by telephone. 

Please follow the instructions below to join the webinar meeting remotely. Teleconference locations do not need to be disclosed nor open to the public.


Join Zoom Webinar Meeting - from PC or Laptop

Zoom Webinar ID: 943 1740 5856 (applies to all)

Teleconference Dial In +1 669 900 6833

One tap mobile +16699006833,,94317405856#

Audience will be allowed to participate during public comment periods.

Phone controls for participants:

 The following commands can be used on your phone's dial pad while in Zoom Webinar meeting:

*6 - Toggle mute/unmute

*9 - Raise hand

The Agenda and Presentation will be available at

The Scientific Review Committee (SRC) was established as a standing committee by an action of the South Coast AQMD Governing Board in 9/8/95. The SRC was intended to enhance the public participation process with technical review and comments by a focused committee at periodic intervals, prior to the updates of the South Coast AQMD BACT Guidelines.  CARB and U.S. EPA Region IX were each asked to designate representatives to the committee, and neighboring San Diego APCD was invited to participate.  The balance of the committee was created by invitation of recognized experts from industry, consultants to industry, public utilities, suppliers of air pollution control equipment and environmental advocacy groups.  Whenever committee members are no longer able to participate or resign, South Coast AQMD seeks out an appropriate replacement to join the committee.  Committee members participate voluntarily and there is no specific number of members to make up the committee.

Overall Purpose of Scientific Review Committee (SRC)

  1. Comment on proposed new & more stringent BACT determinations in permit applications under 30-day public review.

  2. Comment on proposed BACT listings for BACT Guidelines updates (All Parts).

  3. Except for above, purpose is not to comment on past permitting decisions or change them.

SRC Membership

Current SRC members are affiliated with the following organizations:

  • U.S. EPA Region 9
  • CARB

  • San Diego APCD

  • California Energy Commission

  • Southern California Edison

  • Southern California Gas

  • Los Angeles County Sanitation District

  • Los Angeles Department of Water & Power

  • Orange County Sanitation District

  • Western States Petroleum Association

  • California Small Business Alliance

  • Manufacturers of Emission Controls Association

  • Five (5) Environmental consultants

  View or Download Current SRC Membership List

Specific SRC Role

  1. New & More Stringent BACT determinations under 30-day public review:

    1. Review and comment on the appropriateness of the proposed BACT determination within the 30-day comment period by e-mail/mail/fax.

    2. Permit issuance subject to AQMD rules/State law timelines.

  2. Review of other Part B BACT listings:
    Staff commits to send new BACT listings to the SRC at least one week prior to the SRC meeting. There may be general discussion of the BACT listing at the first meeting, and the SRC and the public may send preliminary written comments on the BACT listing prior to the first meeting, as well as follow-up written comments within two weeks of the first meeting for staff to address. However, in order to allow staff time to research any issues raised about new BACT listings, staff will address any comments raised by the SRC or the public at the meeting following the one where the new BACT listing is introduced.

  3. Review and comment on revisions to Part A –Policies and Procedures.

BACT SRC Charter

The BACT SRC Charter (PDF) details the goals and objective, composition and selection of the BACT SRC membership, desired qualifications of its membership and the operational guidelines for the BACT SRC.

South Coast AQMD Staff Role

  1. BACT Team staff will present BACT forms and respond to questions received at the next SRC meeting.

  2. Engineering & Compliance staff will respond to specific issues raised, if appropriate, at the next SRC meeting.

BACT Scientific Review Committee Meetings

  • The BACT SRC meets periodically to introduce new BACT Guideline updates and to gather comments and feedback from committee members and the public.  Information on past meetings can be found below.

June 24, 2021, 2:00 p.m., Remote Meeting

October 27, 2020, 2:00 p.m., Remote Meeting

July 22, 2020, 2:00 p.m., Remote Meeting

February 25, 2020, 10:00 a.m., Room GB

April 24, 2018, 2:00 p.m., Room GB

December 12, 2017, 9:00 a.m., Room GB

October 26, 2017, 10:00 a.m., Room GB

May 24, 2017, 2:00 p.m., Room GB

April 4, 2017, 10:00 a.m., Room GB

November 9, 2016, 10:00 a.m., Room GB

Ask the South Coast AQMD BACT Team
(909) 396-2516
Newsletter Sign Up
Periodic newsletter updates via Email on a variety of air quality-related topics

South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765



© 2021 South Coast Air Quality Management District