Consolidated Table of OEHHA / ARB Approved Risk Assessment Health Values

This page last reviewed May 3, 2012

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, 8-hour, and chronic Reference Exposure Levels (RELs) that are available for use in the AB 2588 Air Toxics "Hot Spots" Program.  The most current acute and chronic health values should be used 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) 322-1617 or send email in care of YanPing Zuo.

All tables are in Adobe Acrobat format.
  • On March 23, 2012, OEHHA adopted revised acute, 8-hour and chronic RELs for nickel and nickel compounds.  The new REL values for nickel and nickel compounds are listed in the table at: http://www.oehha.ca.gov/air/chronic_rels/032312CREL.html.  The complete list of REL values are listed at: http://www.oehha.ca.gov/air/allrels.html.

  • 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,  PDF 170 KB, May 3, 2012.  When printing document, use legal-size paper.)

  • 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, PDF 48KB,  May 3, 2012).

  • 8-Hour Reference Exposure Levels and Target Organs: Lists the 8-Hour Noncancer Reference Exposure Levels that have been adopted by OEHHA and the chemicals target organs. (8-hour.pdf, PDF 26 KB,  May 3, 2012).  The 8-hour RELs are not included in the HARP program.  These health factors will be added after OEHHA approves the Guidelines Manual (Part V).

  • 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, PDF 140 KB,  May 3, 2012).


For more information see: 
preload