The EPA developed this assessment to better understand the Bristol Bay watershed and its resources. The assessment reviews, analyzes, and synthesizes information relevant to potential impacts of large-scale mine development on Bristol Bay fisheries and consequent effects on wildlife and Alaska Native cultures in the region. As a scientific assessment, it does not discuss or recommend policy, legal, or regulatory decisions, nor does it outline or analyze options for future decisions. EPA will use the assessment to inform future decision making.

For more information about the assessment, see About EPA's Bristol Bay Assessment

• Executive Summary of the Final Report, An Assessment of Potential Mining Impacts on Salmon Ecosystems of Bristol Bay, Alaska (PDF)(36 pp, 4 MB, 01/14/14, 910-R-14-001ES)
  This is the final version of the Executive Summary of the US EPA's Bristol Bay Assessment report.
• Volume 1: An Assessment of Potential Mining Impacts on Salmon Ecosystems of Bristol Bay, Alaska (PDF)(630 pp, 29 MB, 01/31/14, 910-R-14-001A)
  This is the final report of the Bristol Bay assessment of potential mining impacts on the salmon ecosystems. This follows 2 released public drafts, several public meetings and the collection of over 300 thousand public comments.This is a 3 volume report.
• Volume 2: An Assessment of Potential Mining Impacts on Salmon Ecosystems of Bristol Bay, Alaska, Appendices: A - D (PDF)(315 pp, 9 MB, 02/04/14, 910-R-14-001B)
  This is the final report (Volume 2) of the Bristol Bay assessment of potential mining impacts on the salmon ecosystems. This follows 2 released public drafts, several public meetings and the collection of over 300 thousand public comments. This is a 2nd volume set made up of Appendices A-D.
• Volume 3: An Assessment of Potential Mining Impacts on Salmon Ecosystems of Bristol Bay, Alaska, Appendices E - J (PDF)(457 pp, 9 MB, 01/15/14, 910-R-14-001C)
  This is the final report (Volume 3) of the Bristol Bay assessment of potential mining impacts on the salmon ecosystems. This follows 2 released public drafts, several public meetings and the collection of over 300 thousand public comments. This is a 3rd volume set made up of Appendices E-J.