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
- Hot Spots Unit Risk and Cancer Potency Values
- Acute, 8-hour, and Chronic Reference Exposure Level (RELs)
Current Hot Spots Guidelines Technical Support Documents
Hot Spots Reports, Notices and Documents
Jun 6, 2002: Notice of Public Comment/Workshop for Draft Air Toxics Hot Spots Guidance Manual for Preparation of Health Risk Assessments 2002
OEHHA released for public comment its Draft Air Toxics Hot Spots Program Guidance Manual for the Preparation of Risk Assessments, and held accompanying workshops.
Dec 28, 2001: Notice of Adoption of 12 Chronic Reference Exposure Levels (RELs) for Airborne Toxicants, Dec 2001
Following their endorsement by the Scientific Review Panel, OEHHA adopted 12 Chronic Reference Exposure Levels, the fourth such wave accompanying the Air Toxics Hot Spots Program Risk Assessment...
Jan 22, 2001: Notice of Adoption of 2nd Set of 22 Chronic Reference Exposure Levels (RELs) for Airborne Toxicants, Jan 2001
After endorsement by the Scientific Review Panel, OEHHA adopted chronic Reference Exposure Levels for 22 chemicals. This was the third such wave to accompany the Air Toxics Hot Spots Program Risk...
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.