This page last reviewed April 8, 2011
Final Staff Report
In December 1999, the Air Resources Board (ARB) completed the final staff report, Update to the Toxic Air Contaminant List. The List represents our priorities for identifying and regulating
substances as directed by State law. The report describes the process followed by the ARB in reviewing and revising the Toxic Air Contaminant List, and presents changes to the List.
Our review included using a ranking system, and consulting with the local
air pollution control districts, Office of Environmental Health Hazard Assessment, Scientific Review Panel, and
Department of Pesticide Regulation. Additional changes were also made in response to two public review and
comment periods.
The Substance by Category
version, the December 1999 Toxic Air Contaminant List, is divided into
six categories and is designed to tell the reader: 1) whether a substance is emitted in California; 2) if a substance
has a health number developed, or that a health number is being developed, under the AB 2588 Air Toxics “Hot Spots”
Information and Assessment Act of 1987; and 3) the status of the substance in the identification process. There is also a quick reference guide
that is similar to the June 1996 list. It can be used to easily determine
if a substance is on the Toxic Air Contaminant List and in what category it can be found on the Substances By Category version
of the list.
If you have any questions, or would like to request a copy of appendices
D, I, or J which are not available on this website, please call the Air Quality Measures Branch at (916) 445-6318.
Report and Appendices |
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Staff Report | ||
Appendix A June 1996 Toxic Air Contaminant List |
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Appendix B December 1999 Toxic Air Contaminant List |
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Appendix C Prioritization Scheme |
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Appendix D Public Comment Letters from the December 15, 1998 and January 20, 1999 Comment Periods |
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Appendix E Responses to Comments Received During December 1998 - February 1999 Comment Period |
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Appendix F Fact Sheets for the Substances Nominated for Review |
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Appendix G Federal Register Notice on Caprolactam |
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Appendix H The U.S. Environmental Protection Agency has issued its Modifications to the Section 112(b)1 Hazardous Air Pollutants. For the most recent link to this document, please see the U.S. EPA website. |
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Appendix I December 30, 1996, Letter from BASF Corporation Regarding Caprolactam |
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Appendix J Memorandum from Office of Environmental Health Hazard Assessment to ARB on Health Effects of Caprolactam |
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