Decision Documents | Region 10 | US EPA

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Decision Documents

Five Year Review - Five-Year Reviews generally are required by CERCLA or program policy when hazardous substances remain on site above levels which permit unrestricted use and unlimited exposure. Five-year reviews provide an opportunity to evaluate the implementation and performance of a remedy to determine whether it remains protective of human health and the environment. Read more about Five Year Reviews.

Record of Decision (ROD) - The Record of Decision (ROD) is a public document that explains which cleanup alternatives will be used to clean up a Superfund site. The ROD for sites listed on the NPL is created from information generated during the RI/FS.  Read more about Records of Decisions (RODs).  

Proposed Plan - Information gathered in the RI/FS is used to develop a Proposed Plan, which describes the various cleanup options under consideration and identifies the option EPA prefers. EPA invited community members to a public meeting to express their views and to discuss the plan with EPA officials.


Feasibility Study - The Feasibility Study (FS) is the mechanism for the development, screening, and detailed evaluation of alternative remedial actions.

The Final Coeur d’Alene Basin Feasibility Study (FS) was issued by EPA Region 10 on October 19, 2001. The FS report describes the cleanup objectives and presents an evaluation of the alternatives considered to reach the cleanup goals. The FS alternatives incorporated cleanup alternatives identified by other parties including the States of Idaho and Washington and the mining companies. The FS analyses were conducted through the RI/FS process of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), 42 U.S.C 9601 et seq., and the implementing regulations in the National Oil and Hazardous Substances Pollution Contingency Plan (NCP), 40 CFR Part 300. The information evaluated in the RI/FS process was used to identify a proposed cleanup plan that will be released for public review and comment on October 29, 2001.
Remedial Investigation - After a site is listed on the NPL, a remedial investigation/feasibility study (RI/FS) is performed at the site. The remedial investigation serves as the mechanism for collecting data to:
Ecological Risk Assessment - An ecological risk assessment evaluates the potential adverse effects that the site contamination may have on the plants and animals that make up ecosystems.

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