This guidance has been developed by the U.S. Environmental Protection Agency (EPA) Region 4 Superfund Division’s Scientific Support Section (SSS), previously known as the Technical Services Section (TSS),  risk assessment staff to provide regional direction for implementation of the U.S. Environmental Protection Agency (EPA) Ecological Risk Assessment Guidance for Superfund (ERAGS; EPA, 1997). This guidance is appropriate for Superfund sites under the authority of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and regulated by the Office of Solid Waste and Emergency Response (OSWER). The Guidelines for Ecological Risk Assessment (GERA; EPA, 1998) published by the Risk Assessment Forum provides agency-wide guidance. This supplemental guidance clarifies the National ERAGS guidance as appropriate at both Resource Conservation and Recovery Act (RCRA) and Superfund sites specific to Region 4.

This supplemental guidance provides direction and does not constitute rulemaking by the Agency. The intent of this guidance is to aid in the development of high-quality risk assessments consistent with the expectations of the SSS in its oversight role.

• Region 4 Ecological Risk Assessment Supplemental Guidance (Interim Draft) (PDF)(80 pp, 995 K, 2015-08-25)