COMMISSION 
AGENDA MEMORANDUM                        Item No.          6c 
ACTION ITEM                            Date of Meeting      October 13, 2020 
DATE:     October 5, 2020 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Stephanie Jones Stebbins, Managing Director, Maritime Division 
Arthur Kim, Project Manager, Marine Maintenance 
Catherine Chu, Capital Project Manager, Seaport Project Management 
SUBJECT:  Authorization for Construction of Bulkhead Stabilization Project at Terminal 30 
(CIP # 801155) 
Amount of this request:                 $802,000 
Total estimated project cost:           $1,100,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to advertise and execute
construction contracts for the Terminal 30 (T-30) Bulkhead Stabilization Project for an estimated
amount of $802,000 additional funding with the total project authorization of $1,100,000. 
EXECUTIVE SUMMARY 
The existing bulkhead, or seawall, at the north end of T-30 is estimated to be over 70 years old
and a section of it is failing. If left alone, the entire wall is at risk of failure, causing erosion of
upland soil into the East Waterway. In order to preserve the asset and protect the environment,
the recommended remedy is to: a) patch up the bulkhead to prevent trapping fish in the affected
area and prevent further erosion, and b) excavate behind the bulkhead and replace it with riprap
to stabilize the remaining bulkhead and preserve land. This will stabilize the area for the
foreseeable future, while leaving options open in the long- term for the Port to either replace the
entire wall or remove the wall and regrade the land behind the wall.
Total estimated project cost is $1,100,000, including approximately $80,000 costs to date for
design. If authorized by the Commission, construction is planned to start in late 2020, and to be
completed by summer of 2021. 
JUSTIFICATION 
The purpose of the project is to preserve the asset and protect the environment. With no action,
the damage to the bulkhead and erosion will continue in the immediate future. In the medium
to long-term future, the entire bulkhead is expected to fail without intervention. 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. 6c                                   Page 2 of 4 
Meeting Date: October 13, 2020 
Diversity in Contracting 
The project team is coordinating with the Diversity in Contracting Department to determine
appropriate WMBE aspirational goals for this project. 
DETAILS 
The project is located at the north end of Terminal 30 that is just outside the SSA Terminals LLC
(SSAT) lease boundary and is owned by the Port of Seattle. See attached PowerPoint slides. 
Scope of Work 
Overall project scope includes: 
(1)   Patch the bulkhead to avoid trapping fish and erosion. 
(2)   Excavate the existing soil behind the failed bulkhead to relieve pressure from the
bulkhead. 
(3)   Install riprap system to stabilize the slope. 
All work completed to date was done by in-house staff to 100% design level. The Port of Seattle
has approval from federal, state, city, and tribal governments to complete the proposed work. 
The work will be performed under the Port's Pile SystemsRepair and Maintenance Program 
which gives advanced approval for qualified, repair and maintenance actions. The proposed work
meets the criteria for the Pile Systems Repair and Maintenance Program. We will coordinate with
Terminal 30 tenant SSAT to minimize impact to operations. 
Schedule 
If approved by the Commission, Marine Maintenance will patch the bulkhead immediately
following permit notification requirements, to be completed by the February 15th in-water work
window. The remaining work behind the bulkhead will be advertised as a Major Construction
contract to be completed by Summer 2021. 
Activity 
Commission design authorization               N/A 
Design start                                       2020 Quarter 2 
Commission construction authorization          2020 Quarter 4 
Construction start                                2020 Quarter 4 
In-use date                                       2021 Quarter 2 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Do Nothing: As part of the feasibility study, Port of Seattle engineers evaluated a
"do nothing" alternative. 
Cost Implications: No additional capital spending for design and construction. 
Pros: 
1.  No capital investments. 

Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. 6c                                   Page 3 of 4 
Meeting Date: October 13, 2020 
Cons: 
1.  Erosion of uplands soils into East Waterway will continue causing potential environmental
concerns . 
2.  High likelihood of the failure of the entire bulkhead causing a much higher capital cost for
repairs in medium to long-term future. 
This is not the recommended alternative. 
Alternative 2  Replace wall in failed area only. 
Cost Implications: $2,314,000.00 
Pros: 
1.  Preserves the asset and stops erosion. 
2.  Replacing the entire wall phases to ease cashflow. 
Cons: 
1.  Cost. 
2.  Not addressing remaining areas of the aging wall. 
This is not the recommended alternative. 
Alternative 3  Patch the wall and stabilize behind failed area only. 
Cost Implications: $1,100,000 
Pros: 
1.  Minimal work. 
2.  Minimal impact. 
3.  Preserves the asset and stops erosion while leaving future options open. 
Cons: 
1.  Not addressing the remaining areas of the aging wall. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE                            $1,100,000            $0     $1,100,000 
AUTHORIZATION 
Previous authorizations                            $298,000                0        $298,000 
Current request for authorization                  $782,000         $20,000        $802,000 
Total authorizations, including this request       $1,080,000         $20,000      $1,100,000 
Remaining amount to be authorized                    $0             $0             $0 


Template revised June 27, 2019 (Diversity in Contracting).

COMMISSION AGENDA  Action Item No. 6c                                   Page 4 of 4 
Meeting Date: October 13, 2020 
Annual Budget Status and Source of Funds 
This project CIP C801155 T-30 Bulkhead Stabilization has been included in the draft 2021 Capital
Plan with a total project cost of $1,145,000. 
This project will be funded by the General Fund. 
Financial Analysis and Summary 
Project cost for analysis              $1,100,000 
Business Unit (BU)                  Joint Venture (Port of Seattle funded) 
Effect on business performance    This project is not expected to generate or preserve any
(NOI after depreciation)             revenue. This project indirectly supports adjacent port
and tenant operations. 
IRR/NPV (if relevant)                N/A 
CPE Impact                       N/a 
Future Revenues and Expenses (Total cost of ownership) 
This project preserves existing asset and protects the environment.  Riprap generally requires
very minimal maintenance. It leaves options open for  the remaining bulkhead. The remaining
bulkhead will require ongoing monitoring for potential repairs and/or replacement, which is not
in the scope of this project.
ATTACHMENTS TO THIS REQUEST 
(1)   PowerPoint slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
None 







Template revised June 27, 2019 (Diversity in Contracting).