A Review of the California Environmental Protection Agency's Risk Assessment Practices, Policies, and Guidelines

Introduction
This report is the product of an external peer review of the policies, methods, and practices that the California Environmental Protection Agency (Cal/EPA) uses to conduct chemical risk assessment. The review was conducted by the Risk Assessment Advisory Committee, a panel of distinguished scientists outside State government. The purpose of the review was twofold: (1) to determine if Cal/EPA risk assessment practices are based on sound science, and (2) to assess the appropriateness of any differences in these practices with those of the US Environmental Protection Agency (US EPA), the National Academy of Sciences (NAS) and other similar bodies.

The Title Page, Preface and Executive summary are currently available for on-screen viewing. Chapters 1-7 will be available in this format on or before October 11th. The Appendices will only be available as zip files.

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• RAAC report (without appendices)

• Appendix B

• Apendices A, C, D, E, F, G

or download the document in three zip files (Self-extracting zip files)

1. Chapters 1 to 7 (189k zip file)

2. Appendices A,C,D,E,F,G (245K zip file)

3. Appendix B (505K zip file)

Appendices (Available as self-extracting zip files only)

• Appendix A: Cal/EPA Risk Assessment Procedures by Mandate (50K zip file)

• Appendix B: Comparison of Cal/EPA and US EPA Toxicity Values (505K zip file - includes 4 Excel files)

• Appendix C: An Overview of Exposure Assessment Methodology and Practice of Cal/EPA and US EPA (55K zip file)

• Appendix D: An Overview of Fate and Transport Models Commonly Used in Analyses Developed or Reviewed by Cal/EPA (61K zip file)

• Appendix E: Risk Assessment Issues Raised by an Inter-Department Work Group of Cal/EPA Staff (29K zip file)

• Appendix F: Meeting Format and Agendas (86K zip file)

• Appendix G: Documents Examined by the Committee (39K zip file)

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Last Updated December 14, 2005