Consolidated Table of OEHHA / ARB Approved
Risk Assessment Health Values

The Consolidated Table of OEHHA / ARB Approved Risk Assessment Health Values is a quick look-up table of all cancer potency values and noncancer acute and chronic Reference Exposure Levels (RELs) that are available for use in the AB 2588 Air Toxics "Hot Spots" Program. This table includes cancer potency values and noncancer reference exposure levels (RELs) that have been approved by the Office of Environmental Health Hazard Assessment (OEHHA) and the Air Resources Board (ARB) for the development of a facility health risk assessment. For more information on the OEHHA Guidelines, see the OEHHA website. Users of this table are advised to monitor the OEHHA website for any updates to the health values. If you have any questions, please call the Emission Assessment Branch of the Stationary Source Division at (916) 323-4327 or send email in care of Linda Keifer.

All tables are in Adobe Acrobat format.

• To view the April 2005 changes to the Consolidated Table of OEHHA / ARB Approved Risk Assessment Health Values, click here (7KB, April, 25 2005).

• Consolidated Table of OEHHA/ARB Approved Risk Assessment Health Values: Lists all of the Health Values that have been approved for use in facility health risk assessments. (contable.pdf, 159KB, April 25, 2005).

• Acute Reference Exposure Levels and Target Organs: Lists the Acute Noncancer Reference Exposure Levels that have been adopted by OEHHA and the chemicals target organs. (acute.pdf, 63KB, April 25, 2005).

• Chronic Reference Exposure Levels and Target Organs: Lists the Chronic Noncancer Reference Exposure Levels that have been adopted by OEHHA and the chemicals target organs. (chronic.pdf, 169KB, April 25, 2005).

For more information see: 

• OEHHA's Development of the "Hot Spots" Guidelines

• ARB's Air Toxics "Hots Spots" Program

• ARB's Air Toxics Program