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Driving less helps the environment because cars are the major source of air pollution and greenhouse gas in the Bay Area.

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Airing Ideas

Air Monitoring Panel

The Air District invites you to join us on Thursday, July 11th for a day-long panel discussion on the latest in air monitoring. Experts from around the state and nation will discuss how new approaches to air monitoring can be used to better inform communities that live adjacent to industrial areas.
More Information:
Air Monitoring Panel Notice
(353 kb PDF, 1 pg)
Report on Monitoring Capabilities 
(3.2 Mb PDF, 89 pgs)

BAAQMD Webcasts

Recent Webcasts

6/19/2013 Board of Directors Regular Meeting
More Information:
Board Agenda 
(1 Mb PDF, 164 pgs)

6/5/2013 Board of Directors Regular Meeting
More Information:
Agenda 
(1 Mb PDF, 70 pgs)

Board Archives:

Agendas, Minutes and Media

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Contacts

Individuals

  • Daphne Chong
  • Toxicologist, Engineering
  • 415 749-4687

Groups

Engineering

415 749-4990

Engineering Contacts
Full BAAQMD Directory

Toxic Air Contaminant Trigger Levels

New Source Review of Toxic Air Contaminants:

The following link is an Adobe Acrobat copy of Table 2-5-1 from Regulation 2 Rule 5, New Source Review of Toxic Air Contaminants.

This table lists Toxic Air Contaminants (TAC) and their trigger levels. Regulation 2, Rule 5 specifies that all permit applications for new and modified sources must be screened for emissions of TACs. If any project emits TACs in amounts that exceed the listed trigger levels, a site-specific Health Risk Screening Analysis (HRSA) is completed by District staff. Estimates of public exposure, and cancer and non-cancer health risk, are made for the maximally exposed residential and off-site worker receptor locations and compared to risk standards (Regulation 2-5-301 and 302). If the emissions from a project are less than the listed trigger-levels, it is assumed that the project does not pose a significant risk to the public and a HRSA is not performed.

Permit Exemptions

If TAC emissions are equal or greater than one or more of the trigger-levels, a HRSA may be necessary to determine if a source is exempt from permit requirements (see Regulation 2-1-316).

Last Updated: 7/31/2012