Generic Ecological Assessment Endpoints (GEAEs) for

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Ecological Risk Assessment

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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

2004

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CONTENTS

PREFACE .v

AUTHORS, CONTRIBUTORS, AND REVIEWERS vi

1. INTRODUCTION: PURPOSE OF THIS DOCUMENT 1

1.1. Definitions of Assessment Endpoints .1

1.2. Potential Uses for Generic Assessment Endpoints.3

1.3. Criteria for GEAEs .5

2. EPA’s INITIAL SET OF GEAEs 7

2.1. Definitions of the GEAEs Organisms13

2.2. Assessment Populations and Communities .16

3. HOW TO USE THE GEAEs .19

3.1. Using GEAEs in Assessment Endpoint Selection 19

3.2. Making the Generic Endpoints Specific 20

3.3. Other Ecological Assessment Endpoints .21

3.4. Completing a List of Assessment Endpoints for a Specific Assessment .22

4. RECOMMENDATIONS FOR FURTHER PROGRESS .23

4.1. Develop and Support a Continual, Open Process for Reviewing, Amending, and Creating New

GEAEs 23

4.2. Develop a Database to Document and Keep Track of New Rationales, Precedents, and

Assessment Endpoints 24

4.3. Potential GEAEs for Future Consideration .25

5. CONCLUSION .27

APPENDIX A. SUPPORTING INFORMATION.28

APPENDIX B. TYPES OF VALUES ASSOCIATED WITH ASSESSMENT ENDPOINTS 52

REFERENCES 54