Bristol Bay

Proposed Determination Pursuant to Section 404c of the Clean Water Act for Pebble Deposit Area, Southwest Alaska

EPA Region 10's proposed determination to restrict the use of certain waters in the Bristol Bay watershed for disposal of dredged or fill material associated with mining the Pebble deposit, a large ore body in southwest Alaska.

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Executive Summary - Proposed 404c Determination, Pebble Deposit (PDF)(14 pp, 2 MB)
Full Version - Proposed 404c Determination, Pebble Deposit (PDF)(214 pp, 34 MB)