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Water: Biosolids

A Guide to the Biosolids Risk Assessments for the EPA Part 503 Rule

Table of Contents (PDF file, 361K)

Chapter 1 (PDF file, 602K) - Overview

Chapter 2 (PDF file, 2313K) - The Risk Assessment Process for the Part 503 Biosolids Rule

Chapter 3 (PDF file, 2911K) - Identification and Resolution of Risk Assessment Issues

Chapter 4 (PDF file, 3183K) - How the Risk Assessments Identified Pollutant Limits For Biosolids

Chapter 5 (PDF file, 1382K) - How the Biosolids Risk Assessment Results Were Used in the Part 503 Rule

Chapter 6 (PDF file, 1143K) - Questions and Answers on the Part 503 Risk Assessments

Chapter 7 (PDF file, 527K) - References

Appendix A (PDF file, 366K) - Parameters Used in the Land Application Risk assessment for Biosolids

Appendix B (PDF file, 492K) - Parameters, Approach, Assumptions, and Degree of Conservatism Used: Land Application Risk Assessment

Appendix C (PDF file, 63K) - Team of Experts Who Assisted EPA in the Part 503 Biosolids Risk Assessment

Appendix D (PDF file, 91K) - Conversions Used to Place Pollutant Limits in the Same Units

Feedback Form (PDF file, 128K)

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