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Waste and Cleanup Risk Assessment

Risk Assessment Guidance for Superfund (RAGS) Part B

RAGS Part B provides guidance on using EPA toxicity values and exposure information to derive risk-based preliminary remediation goals (PRGs) for a Superfund site. Initially developed at the scoping phase using readily available information, risk-based PRGs generally are modified based on site-specific data gathered during the remedial investigation/feasibility study (RI/FS). This guidance does not discuss the risk management decisions that are necessary at a Superfund site (e.g., selection of final remediation goals). The potential users of Part B are persons involved in the remedy selection and implementation process, including risk assessors, risk assessment reviewers, remedial project managers, and other decision-makers.

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Section Pages Size
Table of Contents/Preface (PDF)

12 pages


Chapter 1: Introduction (PDF)

6 pages


Chapter 2: Identification of Preliminary Remediation Goals (PDF)

12 pages


Chapter 3: Calculation of Risk-Based Preliminary Remediation Goals (PDF)

13 pages


Chapter 4: Risk-Based PRGs for Radioactive Contaminants (PDF)

10 pages


References (PDF)

8 pages


Disclaimer: These electronic files contain the text of a policy issued by the U.S. Environmental Protection Agency (EPA). These files have been reformatted to make them available to you in electronic form. Formatting (margins, page numbering, etc.) may be different than the original hard copy to make the document more easily readable on your computer screen. These electronic files are a courtesy copy of the official policy. If any discrepancies are found, the file copy (hard copy original) which resides at the U.S. EPA provides the official policy.

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