Air Quality Advisory Committee (AQAC)
Meeting Summary Information - May 23, 2002

This page reviewed January 12, 2010.


The Air Quality Advisory Committee (AQAC), a University of California appointed scientific peer review committee, independently evaluates the scientific basis of proposed recommendations for updating the ambient air quality standards. In the case of the PM standard review, summaries of past as well as upcoming meetings are presented below:

Click here to view the Air Quality Advisory Committee (AQAC) membership list.


Review of the Ambient Air Quality Standards for Particulate Matter and Sulfates

The Air Quality Advisory Committee (AQAC) has completed its peer review of the scientific basis for the review and recommendations for amending the ambient air quality standards for particulate matter and sulfates. The Committee findings are posted below:

AQAC Findings for the Review of the Standards for Particulate Matter and Sulfates


Summary of the AQAC Meeting Held on April 3, 2002, in Oakland, California

The Air Quality Advisory Committee (AQAC) met on April 3, 2002, to peer-review the scientific basis of a proposal by staff of the Air Resources Board (ARB) and Office of Environmental Health Hazard Assessment (OEHHA) to establish a 24-hour ambient air quality standard for particulate matter 2.5 micrometers in diameter or less (PM2.5).

Staff from ARB and OEHHA summarized the draft document entitled "Proposal to Establish a 24-Hour Standard for PM2.5 - Report to the Air Quality Advisory Committee," which was released March 12, 2002. The proposal recommends a 24-hour standard for PM2.5 of 25 micrograms/cubic meter, not to be exceeded. The major conclusion from the meeting was that the scientific basis for the proposed PM 2.5 24-hour standard was acceptable to the committee, with no required changes. The public, environmental organizations, private industry and air districts, as well as other State of California personnel attended the meeting. Five individuals representing a variety of interests addressed the committee during the public comment period.

ARB and OEHHA staff have incorporated this 24-hour PM2.5 standard recommendation into the final staff report , which was released to the public on May 3, 2002. Comments and findings made by AQAC committee members at the meeting have been combined with comments and findings from the January 23-24, 2002, AQAC meeting to create the Committee's complete findings for their review of the proposals to revise California ambient air quality standards for particulate matter and sulfates. The AQAC review findings are posted below as well as the transcripts from the April 3, 2002 meeting.

AQAC Meeting Announcement

April 3, 2002 Meeting Agenda

Transcripts (April 3, 2002 AQAC Meeting, Oakland, California)


Summary of the AQAC Meeting Held on January 23 and 24, 2002

The Air Quality Advisory Committee (AQAC) met on January 23 and 24, 2002, to consider the ARB staff recommendations for PM10, PM2.5 and sulfate standards.

Staff from ARB and OEHHA summarized staff report entitled “Review of the California Ambient Air Quality Standards for Particulate Matter and Sulfates-Report to the Air Quality Advisory Committee,” which was released November 30, 2001. As part of its review, the AQAC provided staff with comments and identified weaknesses in the staff report that need to be revised. The major conclusion from the meeting was that while the PM report was well written and researched, the document must address the lack of a recommendation for a 24-hour PM 2.5 standard. OEHHA and ARB staff are currently addressing this issue along with other revisions based on AQAC and public comments.

The meeting was attended by the public, environmental organizations, private industry, and air district personnel. Approximately 12 individuals representing a variety of interests addressed the committee during the public comment period on the second day of the meeting. Transcripts from the meeting and well as copies of AQAC meeting presentations are available below. The timeline for presenting a revised report to the Board later this year is available back on the main PM Overview Page.

Click here to view the January AQAC meeting agenda.

AQAC Meeting Presentations

Transcripts (January 23, 2002, AQAC Meeting, Berkeley, California)

Transcripts (January 24, 2002, AQAC Meeting, Berkeley, California)


For more information on Ambient Air Quality Standards, please contact Dr. Linda Smith
at (916) 327-8225 or email at lsmith@arb.ca.gov.

Ambient Air Quality Standards Review

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