Air Toxics Hot Spots

The Air Toxics "Hot Spots" Information and Assessment Act (AB 2588, Connelly) was enacted in 1987, and requires stationary sources of pollutants to report the types and quantities of certain substances routinely released into the air. The goals of the Air Toxics "Hot Spots" Act are to collect emission data, to identify facilities having localized impacts, to ascertain health risks, to notify nearby residents of significant risks, and to reduce those significant risks to acceptable levels.

Guideline Values for Health Risk Assessment

Current Hot Spots Guidelines Technical Support Documents

Hot Spots Reports, Notices and Documents

Sep 27, 1999: Notice for Public Comment on Draft Air Toxics Hot Spots Program Risk Assessment Guidelines Part III 22 Chronic RELs (2nd Set) Sept 1999
OEHHA released for public comment the toxicity summaries for the second set of 40 chemicals in the Air Toxics Hot Spots Program Risk Assessment Guidelines Part III: Technical Support Document for the...
Jun 11, 1999: Air Toxics Hot Spots Program Risk Assessment Guidelines Part III 1999
OEHHA solicited public comment for its revised draft of the Air Toxics Hot Spots Program Risk Assessment Guidelines Part III: Technical Support Document for the Determination of Noncancer Chronic...
Apr 20, 1999: Draft Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part II 1999
OEHHA released a draft of the Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part II: Technical Support Document for Describing Available Cancer Potency Factors.   
Mar 1, 1999: Adoption of Air Toxics Hot Spots Risk Assessment Guidelines Part I: Technical Support Document for The Determination of Acute RELs for Airborne Toxicants
OEHHA released to the public Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part I: Technical Support Document for The Determination of Acute Reference Exposure Levels for Airborne...
Oct 31, 1998: Public Comment Period on Draft Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part II 1998
OEHHA solicited public comments for the revised document "Air Toxics Hot Spots Program Risk Assessment Guidelines Part II: Technical Support Document for the Determination of Acute Reference Exposure...
Oct 30, 1998: Notice of Public Comment on Draft Air Toxics Hot Spots Risk Assessment Guidelines Part I: Technical Support Document for The Determination of Acute RELs for Airborne Toxicants
OEHHA released for public comment its draft Air Toxics "Hot Spots" Risk Assessment Guidelines Part I: Technical Support Document for The Determination of Acute RELs for Airborne Toxicants.
Dec 30, 1997: Extension of Public Comment Period for Draft Air Toxics "Hot Spots" Guidelines Part III 1997
OEHHA announced an extension of the comment period for the Draft Air Toxics "Hot Spots" Guidelines Part III: Technical Support Document for Determining Chronic Reference Exposure Levels
Oct 31, 1997: Notice of Public Comment/Workshops for Draft Air Toxics Hot Spots Risk Assessment Guidelines Part III 1997
OEHHA conducted two public workshops to solicit public comment and respond to questions on the draft document, Air Toxics Hot Spots Program Risk Assessment Guidelines Part III: Technical Support...
Oct 31, 1997: Notice of Public Comment for Air Toxics "Hot Spots" Risk Assessment Guidelines Part II
OEHHA solicited public comments on the draft document, Air Toxics Hot Spots Program Risk Assessment Guidelines Part II: Technical Support Document for Determining Cancer Potency Factors.
Dec 31, 1996: Notice of Public Comment/Workshops for Draft Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part IV Dec 1996
OEHHA held workshops and solicited comments on the draft document, "The Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part IV: Technical Support Document for Exposure Assessment and...

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