1. Introduction / Michael A. Kamrin -- 2. Harmonization of Approaches to the Assessment of Risk from Exposure to Chemicals / Cynthia Sonich-Mullin -- 3. Approach to Risk Assessment for Priority Substances in Canada: Novel Aspects / Bette Meek and Kathy Hughes -- 4. Communicating Differences in Risk Approaches / Christine F. Chaisson -- 5. Risk Harmonization: A View from the Ground / David A. Bennett -- 6. Risk Assessment: What is the Question? / P. Michael Bolger -- 7. Role of Risk Assessment in Public Health Practice / Christopher T. De Rosa, Yee-Wan Stevens and Barry L. Johnson -- 8. An Example of Cooperative Risk Assessment: Scenario Analysis for the Risk of Pine Shoot Beetle Outbreaks Resulting from the Movement of Pine Logs from Regulated Areas / Robert L. Griffin -- 9. Past and Current Harmonization Efforts at the Federal Level / William H. Farland -- 10. State Approaches to Risk Assessment and Management: A Michigan Perspective / Harold Humphrey, Jeffrey A. Crum and Charles P. Cubbage. Pt. I. Harmonization From a Public Health Perspective / Harold Humphrey. Pt. II. Michigan's Environmental Cleanup Regulations: Influences on Eisk Assessment / Jeffrey A. Crum. Pt. III. A Perspective on Risk Management / Charles P. Cubbage -- 11. A Review of the Consistency, Harmonization, and Scientific Basis of Risk Assessment Activities within the California Environmental Protection Agency / Thomas A. McDonald, Richard A. Becker and David T.-W. Ting [et al.] -- 12. Federal-State Toxicology and Risk Analysis Committee: its Role and Accomplishments in Risk Harmonization / Kirpal S. Sidhu, Nicholas D. Anastas and Maria Gomez-Taylor [et al.] -- 13. Case Study: Sport Fish Consumption Advisories in the Great Lakes Region / John L. Hesse. Case Study Comments: Part 1 / P. Michael Bolger. Case Study Comments: Part 2 / William H. Farland -- 14. Workshop Summaries / Michael A. Kamrin. Exposure Assessment Workshop / Michael A. Kamrin. Toxicity Assessment Workshop / Michael Dourson. Risk Management Workshop / William E. Cooper. Risk Communication Workshop / Carol Y. Swinehart -- 15. Summary and Conclusions / Michael A. Kamrin -- App. A. Environmentally Sound Management of Toxic Chemicals including Prevention of Illegal International Traffic in Toxic and Dangerous Products -- App. B. Risk Assessment and Risk Management in Regulatory Decision Making: Commission on Risk Assessment and Risk Management Draft Report, June 13, 1996 -- App. C. Proposed Guidelines for Carcinogen Risk Assessment -- App. D. Soil Screening Guidance: Fact Sheet -- App. E. Risk in Environmental Decision Making: A State Perspective. Working Paper -- App. F. Water Pollution: Differences among the States in Issuing Permits Limiting the Discharge of Pollutants -- App. G. Superfund: How States Establish and Apply Environmental Standards When Cleaning up Sites.