1. Executive Summary	5
2. Workshop Report	13

2.1 Introduction	14
2.2 Regulatory Background	16
2.3 Guidance Principles for Higher-Tier Aquatic Risk Assessment	19
2.4 Summary and Conclusions	42

3. Case Studies	47

3.1 Summary of Case Study Syndicate Reports	48
3.2 Case Study Data and Syndicate Reports	54

Appendix I: Workshop Sponsors	161
Appendix II: Workshop Participants	162
Appendix III: Introductory Plenary Presentations (Abstracts)	163
Appendix IV: Results of Pre-Workshop Questionnaire	171
Appendix V: Glossary of Terms	174