Ecological Risk Assessment Guidance
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EPA Region 10 Supplemental Ecological Risk Assessment Guidance for Superfund (PDF) (86 pages, 612 Kb)
This document summarizes and highlights important concepts and steps of the Remedial Investigation/ Feasibility Study relevant to risk assessment. This is intended for use by RPMs and risk assessors preparing ecological risk assessments for Superfund sites in Region 10. Final Version: EPA 910-R-97-005 Date: June 1997.