Ecological Risk Assessment Guidance
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Environmental Assessment Regional Information
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.