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

Oct 27, 2000: Notice of Adoption of the Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part IV Oct 2000
OEHHA released the final document, "Air Toxics Hot Spots Program Risk Assessment Guidelines Part IV: Exposure Assessment and Stochastic Analysis Technical Support Document."
May 2, 2000: Notice of Adoption of 16 Chronic Reference Exposure Levels (RELs) for Airborne Toxicants, May 2000
Following endorsement by the Scientific Review Panel, OEHHA adopted Chronic Reference Exposure Levels for 16 chemicals.  This was the 2nd wave included with the Air Toxics Hot Spots Program Risk...
Mar 10, 2000: Notice of Public Comment Period on Draft Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part IV Mar 2000
OEHHA released for public comment the Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part IV: Exposure Assessment and Stochastic Analysis Technical Support Document.
Feb 23, 2000: Notice of Adoption of Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part III and 22 Chronic RELs
Following approval by the Scientific Review Panel, OEHHA adopted the Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part III, and 1st set of 22 chronic RELs.
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.

Pages