8a Presentation Terminal 117 Habitat Restoration

Item No.: 8a_Supp
Meeting Date: April 28, 2020
Terminal 117 Habitat Restoration &
Duwamish Public Shoreline Access Project

April 28, 2020

Request
Authorization to execute GC/CM construction contract
Funding previously authorized:
Environmental Remediation Liability (ERL) authorization
Insurance settlement



2

Terminal
117 Site
Sites 23 and 25 from Lower Duwamish
River Restoration Plan (2009)
Approximately 14 acres
Ecologically important location
Portion was early action cleanup area
Increases emergent marsh > 40%
Provides shoreline public access
Achieves 35% of Century Agenda goal
Satisfies TIGER grant and public access
obligation
3

Prior to
Cleanup
(2013)
N

4

After Cleanup
(2015)
N

Site 23
(Terminal 117)

Site 25

5

After Restoration


N
Computer generated rendering

6

Off-
Channel
Marsh


7

On-
Channel
Marsh


8

Public Shoreline Access



9

Viewpoints

John Beal
Overlook

Bridges




Elevated Viewpoint
Viewpoint Pier

10

Schedule
Notice to proceed                      June - July
Intertidal construction                   July - October
Earthwork/grading                    July - February
Plant installation                         November - March
Pier structure                           January - March
Substantial completion                  Fall - Winter 2021

11

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