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Air Toxicology and Epidemiology
Hot Spots Guidelines
- Proposed Revisions to the Technical Support Document for Noncancer Risk Assessment
[4/24/08] - Extension of the Public Comment Period for Air Toxics Hot Spots Program Proposed Revisions to the Technical Support Document for Noncancer Risk Assessment
[12/19/07] - Adoption of a Unit Risk Value for Ethylbenzene
[11/14/07] - Notice to interested parties:
Notice of public comment period
on
Air Toxics Hot Spots Program,
Proposed Revisions to the Technical Support Document for Noncancer Risk Assessment - comment period extended
[11/02/07] - Notice to Interested Parties Proposal for the Adoption of a Unit Risk Factor for Ethylbenzene
[08/27/07] - Notice to Interested Parties Notice of Public Comment Period on Toxic Air Contaminants Program – Proposal for the Adoption of a Unit Risk Factor for Ethylbenzene
[04/20/07] - Document Available: Technical Support Document for Describing Available Cancer Potency Factors, May 2005
[05/31/05] - Document Available: Draft Chronic Reference exposure for Silica (Crystalline, respirable), and OEHHA's responses to public comments
[11/03/04] - Adoption of a Unit Risk Value for Naphthalene
[08/03/04] - Adoption
of Air Toxics Hot Spots Program Guidance Manual for Preparation
of Health Risk Assessments
[10/03/03] - Adoption
of the Revised Toxicity Equivalency Factors (TEF WHO-97) for PCDDs, PCDFs, and Dioxin-Like PCBs
[08/29/03] - Notice
of Public Comment Period on Air Toxics Hot Spots Program - Chronic Toxicity Summary Silica
(Crystalline, Respirable)
[04/25/03] - Air
Toxics Hot Spots Updated Program Risk Assessment Guidelines, Part II: Technical Support
Document for Using Cancer Potency Factors
[12/19/02] - Notice
to Interested Parties Air Toxics Hot Spots Program Guidance Manual for Preparation of
Health Risk Assessments: Draft for Public Comment
[06/06/02] - Adoption
of Chronic Reference Exposure Levels (RELs) for Airborne Toxicants
[12/28/01] - Air
Toxics Hot Spots Program Risk Assessment Guidelines Part III. The Determination of Chronic Reference Exposure Levels
- 22 Chemicals
[01/22/01] - Notice
to Interested Parties Air Toxics Hot Spots Program Risk Assessment Guidelines. Part IV.
Exposure Assessment and Stochastic Technical Support Document
[10/27/00] - Notice
of Public Comment Period on Air Toxics "Hot Spots" Program Risk Assessment
Guidelines
[07/21/00] - Air
Toxics Hot Spots Program Risk Assessment Guidelines Part III. The Determination of Chronic Reference Exposure Levels
for Airborne Toxicants - 16 Chemicals
[05/02/00] - Notice
to Interested Parties Draft Air Toxics Hot Spots Program Risk Assessment Guidelines. Part
IV. Exposure Assessment and Stochastic Technical Support Document
- comment period closed
[03/10/00] - Air
Toxics Hot Spots Program Risk Assessment Guidelines Part III. The Determination of Chronic Reference Exposure Levels
for Airborne Toxicants. 22 Chemicals
[02/23/00] - Notice
to Interested Parties Notice of Public Comment Period on Air Toxics "Hot Spots"
Program Risk Assessment Guidelines - 2nd Set of 40 Chronic RELs
- Comment Period Closed (10/27/99)
[09/27/99] - Air
Toxics Hot Spots Program Risk Assessment Guidelines Part III. The Determination of Noncancer Chronic Reference
Exposure Levels for Airborne Toxicants (22 chemicals) and OEHHA's
Responses to Public Comments. - Revised DRAFT
[06/11/99] - Air
Toxics Hot Spots Program Risk Assessment Guidelines Part II. Technical Support Document for Describing Available
Cancer Potency Factors
[04/20/99] - Air
Toxics Hot Spots Program Risk Assessment Guidelines Part I. Technical Support Document for The Determination of
Acute Reference Exposure Levels for Airborne Toxicants.
[04/05/99] - Response
to Comments on the Scientific Review Panel Draft of the Air Toxic Hot Spots
Risk Assessment Guidelines Part 1: Determination of Acute Reference
Exposure Levels for Airborne Toxicants (received by OEHHA Jan. 18,
1999)
[03/01/99] - Response
to Comments on the Scientific Review Panel Draft of the Air Toxic Hot Spots
Risk Assessment Guidelines Part 1: Determination of Acute Reference
Exposure Levels for Airborne Toxicants (November 1998)
[02/04/99] - Notice
to Interested Parties Notice of Public Comment Period on Air Toxic "Hot Spots"
Program Risk Assessment Guidelines, Part II: Technical Support Document
for the Determination of Acute Reference Exposure Levels for Airborne
Toxicants. - Comment Period Closed (11/30/1998)
[10/30/98] - Notice
to Interested Parties Notice of Extension of Public Comment Period for Air Toxics "Hot
Spots" Guidelines Part III: Technical Support Document for Determining
Chronic Reference Exposure Levels - Comment Period Closed (01/29/98)
[12/26/97] - Responses
to Comments by the Staff of the Office of Environmental Health Hazard Assessment
(OEHHA) on the April 1994, Draft Technical Support Document for
Using Cancer Potency Factors.
[12/05/97] - Notice
to Interested Parties October 31, 1997 Notice of Public Comment Period and Notice of Public
Workshops on Air Toxic "Hot Spots" Program Risk Assessment
Guidelines, Part III: Technical Support Document for the Determination
of Noncancer Chronic Reference Exposure Levels - Comment Period
Closed (12/30/97)
[10/01/97] - Notice
to Interested Parties October 31, 1997 Notice of Public Comment Period on Air Toxics "Hot
Spots" Program Risk Assessment Guidelines for Determining Cancer
Potency Factors - Comment Period Closed (12/30/97)
[10/01/97]
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