COMMISSION 
AGENDA MEMORANDUM                        Item No.          8b 
ACTION ITEM                            Date of Meeting     November 17, 2020 
DATE:     November 10, 2020 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Kenneth Lyles, Director, Maritime Operations and Security 
Jo Woods, Sr. Manager, Recreational Boating 
Tim Leonard, Capital Project Manager 
SUBJECT:  Harbor Island Marina Dock-E Float and North Pier Improvements Project Design
Funding 
Amount of this request:                 $950,000 
Total estimated project cost:           $4,500,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to authorize $950,000 in design
funding for the proposed Harbor Island Marina Dock-E Floats and North Pier Improvements
project. This design funding will increase the total project authorization to date to $1,045,000,
out of a preliminarily estimated total project cost of $4,500,000. 
EXECUTIVE SUMMARY 
This capital improvements project will replace the southernmost 23 (out of 78 total) existing
floats at Dock-E at Harbor Island Marina with heavier duty floats and piles; upgrade the remaining
dock portion; and replace the dock's North Pier structure to restore vehicle access to it. These
proposed improvements are needed to increase the dock's overall vessel loadingcapacity and
improve its operational ability to provide moorage for large commercial tug tenants. 
JUSTIFICATION 
Dock Structural Integrity 
While originally designed and constructed in 1983 for smaller craft, Dock-E at Harbor Island
Marina has been providing moorage for large commercial tugs for over a decade and is
currently primarily utilized by long-time commercial tenants Global Diving and Western
Towboat, as well as other commercial marine vessel tenants on a more limited basis. As a
result of this heavier loading of vessels up to 94-ton (gross) and 120-feet in length, much of the
dock's piles, walers, cleats, bollards, and pile hoops have been severely worn or damaged and
these elements have been repaired or upgraded over the last five years by Marine Maintenance
in a continual effort to extend the dock's capability to accommodate the tenant vessels'
berthing needs.  Additionally, although many of the original timber guide piles have been

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. 8b                                  Page 2 of 6 
Meeting Date: November 17, 2020 
replaced with steel piles as part of a facility programmatic replacement, some lower load 
capacity timber piles still remain. All of these factors have contributed to Dock-E currently
functioning at a less than ideal level of structural integrity as well as requiring a higher rate of
repairs and maintenance within its remaining limited service life. 
Economic Impact 
This improvements project contributes directly to the jobs engine of the local maritime industry 
cluster. Tugboats and towboats are an essential component of the maritime sector. As just
one measure of this value, the 2015 Ties that Bind report by The McDowell Group found that
Seattle and Tacoma continue to serve as the "lifeline" to Alaska as they capture 97% of cargo,
by weight, moved between Puget Sound and Alaska. This report examined the array of goods
and services that Alaska sources from Puget Sound. It found that in 2013 the total value of
those goods and services was $5.4 billion. Additionally, the more recent 2019 Community
Attributes "Tri-Port" Economic Impact study identified tug and barge operators that utilize Port
of Seattle facilities dockage and moorage leases generated nearly $2.4 million in revenue for
the Port of Seattle in 2017. 
DETAILS 
Design and Permitting 
A potential project to upgrade/repair Dock-E was originally proposed in 2014. This resulted in a
condition assessment study being completed in 2015 in which four increasingly involved levels
of improvements were outlined and cost estimated with the fourth level being complete
replacement of the entire dock. Major work improvements for Dock-E were subsequently
delayed pending a Port decision on the best level to proceed with to continue to meet tenant
business needs within the constraint of limited available capital improvement project funding.
Upon further analysis and recommendation by Port staff, the Maritime Division has now
approved proceeding with a combination of Level 2 and Level 3 improvements for Dock-E.
The proposed Dock-E Float and North Pier Improvements project is a Tier 2 project under the
Sustainable Evaluation Framework Policy Directive. The project team will explore design
alternatives to minimize impacts on the environment while meeting project goals and
objectives. The permitting effort will include performing a SEPA determination; obtaining
required Shoreline Substantial Development and building permits from the City of Seattle; and
acquiring in-water permits from various state and federal regulatory agencies under a JARPA for
the project to be construction bid ready.
Diversity in Contracting 
The project design will be performed by a consultant engineering firm under an existing Port of
Seattle IDIQ contract in which a WMBE participation commitment of 43% has been established.
Relationship to Other Proposed Improvement Projects at Harbor Island Marina 
The proposed Dock-E Float and North Pier Improvements project will supplement the proposed
separate HIM Dock-E Power Improvements and HIM Restroom Replacement small works projects

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

COMMISSION AGENDA  Action Item No. 8b                                  Page 3 of 6 
Meeting Date: November 17, 2020 
currently planned to be completed by Marine Maintenance in 2020 and 2021, respectively. These
two smaller projects have been accelerated in the Maritime Capital Plan under separate CIPs due
to facility safety concerns and the Port's ability to provide required amenities to Marina users.
Consideration has been given to the planning of all three proposed HIM projects' schedules and
it has been determined that advance execution of both the HIM Dock-E Power Improvements
and HIM Restroom Replacement projects will best serve marina users and complement the work
to be performed under the proposed HIM Dock-E Float & North Pier Improvements project to be
completed later in 2022-2023. 
Scope of Work 
The project design/permitting effort to be completed with the proposed funding includes the
development of bid documents and procurement of permits for construction of the following
improvement elements: 
Complete replacement of 23 (out of 78 total) of Dock-E's existing float sections with new
heavier duty floats, piles, and appurtenances designed for larger vessel berthing and
higher load mooring capability. Float design and materials will be explored during
design phase. These existing floats to be replaced comprise the southernmost portion of
Dock-E. 
Refurbishment of 55 (out of 78 total) of Dock-E's existing float sections consisting of
replacing all remaining timber guide piles with higher load capacity steel piles;
replacement of damaged walers and cleats; nominal leveling; and concrete surface crack
repairs and sealing. These existing floats, to remain in place and be refurbished,
comprise the portion of Dock-E north of the floats to be replaced. 
Demolition and replacement of Dock-E's existing North Pier to restore vehicle access to
it. This proposed North Pier replacement element was previously to be funded as a
separate Marine Maintenance small works CIP before being incorporated into this
proposed HIM Dock-E improvements project scope and CIP as part of the 2021 Maritime
Capital Plan. Pier design and materials will be explored during design phase. 
Schedule 
In-water construction work will be restricted to occur within an August 1st  February 15th "fish
window". 
Activity 
Commission design authorization               2020 Quarter 4 
Design start                                       2021 Quarter 1 
Commission construction authorization          2023 Quarter 1 
Construction start                                2023 Quarter 3 
In-use date                                       2024 Quarter 2 


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

COMMISSION AGENDA  Action Item No. 8b                                  Page 4 of 6 
Meeting Date: November 17, 2020 
Cost Breakdown                                     This Request           Total Project 
Design and Permitting                                      $950,000             $1,045,000 
Construction                                                     $0             $3,455,000 
Total                                                         $1,000,000              $4,500,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1: Do nothing  continue to repair Dock-E as necessary to maintain current tenant
vessels moorage 
Pros 
Retains Port capital for other priority projects and financial initiatives 
Avoids temporary construction impacts to existing tenant moorage 
Cons 
Dock-E will continue to incur damage due to high impact loading from existing large
tenant vessels 
High ongoing repair and maintenance costs will continue to be incurred in order to keep
the dock operational 
Dock-E will continue to have safety/structural failure risk due to ongoing heavy vessel
berthing loads 
This is not the recommended alternative 
Alternative 2: Perform a full replacement (Level 4) of all Dock-E floats and the north access
pier. 
Pros 
All-new Dock-E with full- service life for north as well as south floats 
Reduced maintenance cost for required tenant vessel moorage 
Eliminates current safety/failure risk for entire dock due to existing tenant large vessel
moorage loading impacts 
Cons 
High initial cost for full dock replacement 
High level of temporary construction disruption to tenant moorage 
This is not the recommended alternative 
Alternative 3: Perform proposed combination (Levels 2 and 3) of Dock-E float
replacements/repairs as well as replacement of north access pier
Pros 
Extends overall service life of Dock-E while addressing most urgent tenant vessel loading
impacts at south end of dock 

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

COMMISSION AGENDA  Action Item No. 8b                                  Page 5 of 6 
Meeting Date: November 17, 2020 
Restores vehicle access capability to north pier in order to better meet tenant business
needs 
Limits temporary construction impacts to existing tenant moorage 
Maintains ability to extend tenant vessel berthing, with continued maintenance, while
limiting overall cost of capital improvements and future maintenance 
Cons 
Tenant vessel moorage will need to be phased during construction 
Higher than typical maintenance costs will continue to be incurred with north dock
floats in order to keep the dock operational for large vessel moorage 
Combination of old and new floats will require more complicated maintenance schedule 
This is the recommended alternative 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                 $4,100,000               $0      $4,100,000 
Current change                                   $400,000               0        $400,000 
Revised estimate                                $4,500,000                0      $4,500,000 
AUTHORIZATION 
Previous authorizations                             $95,000                0         $95,000 
Current request for authorization                  $950,000                0        $950,000 
Total authorizations, including this request       $1,045,000                0      $1,045,000 
Remaining amount to be authorized            $3,455,000             $0     $3,455,000 
Annual Budget Status and Source of Funds 
This project has been included in the 2020 Capital Plan under CIP C800678 T102 HIM E Dock
Rehabilitation for a total project cost of $3,965,000 and has been included in the draft 2021
Capital Plan with a total project cost of $4,100,000. The increased estimated cost will be covered
by the Maritime CIP Reserve. 
This project is funded by the General Fund. 
Financial Analysis and Summary 
Project cost for analysis              $4,500,000 
Business Unit (BU)                  Maritime Operations & Security 


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

COMMISSION AGENDA  Action Item No. 8b                                  Page 6 of 6 
Meeting Date: November 17, 2020 
Effect on business performance     This project is not expected to directly generate
(NOI after depreciation)             incremental revenue increases. It is estimated this
project will increase annual depreciation expense by
approximately $113,500. 
IRR/NPV (if relevant)                N/A 
CPE Impact                       N/A 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides (PowerPoint) 
(2)   Sustainable Design Approach memo 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
No previous authorizations by Commission. 













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