Item No: 10d_Supp
Meeting date:  September 12, 2023

West Waterway Deepening

Arthur Kim – Capital Project Manager

                    Action Request
Request Commission authorization for the Executive Director to:
1.  Execute a Design Agreement and all associated documents with
the US Army Corps of Engineers for the Preconstruction
Engineering and Design phase of the West Waterway Deepening
Project, and
2.  Authorize the Preconstruction Engineering and Design Phase of
the West Waterway Channel Deepening Project, including
execution of outside services contracts and service agreements,
for an estimated Port cost of $4,000,000, with the total authorized
amount for the project to be at $5,650,000.
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                                                                                               Item No.: _Supp
Meeting Date: July 14, 2020








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               West Waterway Deepening Site Location
WEST WATERWAY
Local Service Facility
Overall Width = 190 Feet
WEST WATERWAY               -57 Feet MLLW
Overlap Width = 65 Feet                        Terminal 5

500 Feet Wide




700 Feet Wide
Terminal 10      5,400 Feet Long


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                  Background
• 2014: Managing Members approved joint feasibility study with
US Army Corps of Engineers (USACE) to deepen federal
navigation channels in East & West Waterways.
• 2017: Feasibility Report completed
• 2018: Congress authorized deepening channel to -57’ MLLW.
• 2020: USACE received funding for Preconstruction Engineering
and Design (PED) for West Waterway.
• USACE estimates 700K cubic yards will be dredged.

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                USACE Partnership
• Design Agreement commits the Port of Seattle as non-federal
sponsor to share 50% of design with cash and/or work-in-kind
(WIK)
• USACE will manage PED phase including environmental
permitting, engineering, and lead overall design.
• Port will be responsible for sediment characterization,
geotechnical engineering, and participation in ship simulations.
– Payment will be made to make up the difference between WIK &
50/50 split.
– Some Port costs will not be eligible for WIK credit.
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        Why Deepen the West Waterway?
• Seattle Harbor is a major gateway for regional & national
exports/imports.
– Will lose container market share to other ports.
• Container ships are increasing in size needing deeper
navigation channels or risk causing operational delays.
– Without deepening largest ships need to wait until high tide.
• Terminal 5 Berth Modernization is deepening berth for the
largest ships.

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           Ability to Berth the Largest Ships



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                    Schedule

POS Commission Design Authorization        September 2023
Design Agreement Execution                Q3 2023
Design Kickoff                                 Q4 2023
Procure WIK Consultant                     Q2 2024
Design Completion                         Q3 2026


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             Budget and Authorization
AUTHORIZATION                 Capital      Expense       Total
(POS)        (NWSA)
Previous Authorizations                 $150,000    $1,500,000    $1,650,000
Current Request for Authorization     $4,000,000             $0    $4,000,000
Total Authorizations                   $4,150,000    $1,500,000    $5,650,000
*Remaining Amount to Be           $23,850,000           $0   $23,850,000
Authorized

*Remaining Amount to Be Authorized is based on a 2017 estimate & will be revised during design.

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                  Cone of Certainty

We are here




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         Authorization Request/Next Steps
Total amount of this request: $4,000,000
Next Steps:
• Execute Design Agreement and associated documents.
• Begin design with USACE.
• Advertise and award project specific service agreement.

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                         Questions?
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