Pier 53-55 Sediment Cap and Enhanced Natural Recovery Area Remediation project vicinity map

The project site is an east-west-trending, roughly triangular area located offshore of Piers 53, 54, and 55. The site is west and slightly north of the intersection of Madison Street and Alaskan Way in downtown Seattle. The project consists of a 3-foot-thick sediment cap covering the 2.9 acres farthest offshore and to the south and an experimental 1-foot-thick enhanced natural recovery area covering the 1.6 acres nearshore and to the north.

View final report.