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The U.S. Environmental Protection Agency's (EPA) Integrated Risk Information System (IRIS) program develops human health assessments that focus on hazard identification and dose-response analyses for chemicals in the environment. The ORD Staff Handbook for Developing IRIS Assessments (the handbook) provides guidance to scientists who perform the IRIS assessments in order to foster consistency in the assessments and enhance transparency about the IRIS assessment process. At the request of the EPA, this report reviews the procedures and considerations for operationalizing the principles of systematic reviews and the methods described in the handbook for determining the scope of the IRIS assessments, evidence integration, extrapolation techniques, dose-response analyses, and characterization of uncertainties.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2022. Review of U.S. EPA's ORD Staff Handbook for Developing IRIS Assessments: 2020 Version. Washington, DC: The National Academies Press. https://doi.org/10.17226/26289.

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Publication Info

110 pages | 7 x 10 | 

ISBNs: 
  • Paperback:  978-0-309-09088-9
  • Ebook:  978-0-309-09103-9
DOI: https://doi.org/10.17226/26289
Chapters skim
Front Matter i-xii
Summary 1-12
1 Introduction 13-18
2 Overview of Organization and Content of the Handbook 19-32
3 Planning Assessments 33-51
4 Study Evaluation 52-63
5 Evidence Synthesis 64-69
6 Evidence Integration 70-75
7 Hazard Considerations and Study Selection for Deriving Toxicity Values 76-81
References 82-87
Appendix A: Committee Member Biosketches 88-91
Appendix B: 2020 IRIS Handbook Organization and Contents and EPA Questions to the Committee 92-96
Appendix C: Open Session Agendas 97-98

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