COMMISSION 
AGENDA MEMORANDUM                        Item No.          10d 
ACTION ITEM                            Date of Meeting       August 8, 2023 

DATE:     July 18, 2023 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Kenneth R. Lyles, Director, Maritime Operations and Security 
Kelli Goodwin, Senior Manager, Maritime Operations 
Mark Longridge, Capital Project Manager, Seaport Project Management 
SUBJECT:  Terminal 91 Berths 6 & 8 Redevelopment and Additional Stormwater Treatment
Construction Funding (CIP#s C102475, C801350) 
Amount of this request:              $71,825,000 
Total estimated project cost:         $76,000,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to 1) advertise, award, and execute
a major works construction contract to complete the redevelopment of the Terminal 91 Berths 6 
& 8, to utilize a Project Labor Agreement, and 2) enter into agreements in support of completion
of this work, including tribal agreements. Total request for this action will be $71,825,000 for a
project total authorization of $76,000,000. 

EXECUTIVE SUMMARY 
This project will redevelop the condemned vessel berths and adjoining apron areas of Berths 6 & 
8 along the northeast side of Pier 90 at Terminal 91 to help ensure the long-term viability of the
Port of Seattle (Port) as the home to the North Pacific fishing fleet.
Planned redevelopment includes demolition of approximately 62,250 square feet of condemned
existing timber apron and 830 linear feet of seawall (northerly portion of Berth 6 and entire Berth
8), removal and relocation of existing gangway, floats and boathouse, removal/replacement of
existing small office structures, and reconstruction of a concrete apron structure at 600 pounds
per square foot along the current alignment.  The project includes the removal of over 2,000
failing creosote piles, installation of approximately 320 concrete and steel piles, with an overall
decrease in overwater coverage. The project work also include s stormwater improvements,
upgraded shore power connections, renewable energy through new solar panel arrays, and a 
direct connection for vessel sanitary sewer. 

Template revised January 10, 2019.

             COMMISSION AGENDA – Action Item No. 10d                                 Page 2 of 7 
Meeting Date: August 8, 2023 
JUSTIFICATION 
The redevelopment of Berths 6 & 8 supports the following Maritime Division goals toward
achieving Century Agenda objectives: 
1.  Continue to grow the economic value of the fishing and maritime cluster including the
number of local jobs and regional business revenue. 
2.  Prioritize uses that support the commercial fishing industry, with a focus on anchoring the
North Pacific fishing fleet in Seattle. 
3.  Supports the Port’s strategy to “be the greenest and most energy-efficient port in North
America” by installing solar array infrastructure, stormwater treatment infrastructure,
direct connection for vessel sanitary sewer, and replacing existing creosote piling with
cement and recycled steel materials.
4.  Supports anticipated growth in cruise ship operations. 
DETAILS 
Berths 6 & 8 are the last remaining original timber pier berths at Terminal 91 and are at the end
of their service life. Approximately 30% of the apron is condemned, and the remaining sections
are posted with severe load limits. Originally built in the 1910s, this section of Pier 90 was most
recently  rehabilitated  in  1985,  and  little  has  been  done  to  the  structure  since  then.
Redevelopment of Berths 6 & 8 is critical to ensuring the long-term viability of the port as the
home to the North Pacific fishing fleet.
The fleet has been modernizing and will continue to do so. New builds are larger than the vessels
they are replacing.  This means vessels that may have previously been able to moor at
Fishermen’s Terminal are now too long or draw too much water to remain and are looking to
moor at Terminal 91. Fishing companies are also growing. As an example, both the Ocean Peace
and O’Hara companies have each added additional vessels to their fleets in the past five years. 
Critical to the fleet’s success while in port is access to laydown areas, heavy lift capability pier
side, and ample apron space to perform offloads, backloads, and repair work. This project will
replace approximately 62,250 square feet of condemned existing timber pier structure and 830
linear feet of seawall, providing pier apron capable of supporting the fleet’s activities and needs. 
Demand for moorage at Terminal 91 continues to grow. Several times during the shoulder
seasons the space at Terminal 91 proves inadequate to accommodate the needs of the North
Pacific fleet. Cruise activity at Terminal 91 is growing in both number and size of vessels, further
increasing the demand on Terminal 91 berth space. This project responds to that demand and
will alleviate some of the shoulder season pressure by providing space for three 250-foot-plus
catcher processors. 
As noted in the 2017 Fishing Vessel Moorage Analysis for the Port by S2 Strategy, “fishing and
seafood processing sector of the maritime industry, as a whole has by far the largest revenue
impact to the state of any maritime sector. And is at least equal in job production to the other
sectors.…” Recommendations included providing an additional three to four 200-400-foot berths
by 2020 and to plan for berths to accommodate another ten to twelve boats of 175-400-feet over

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

             COMMISSION AGENDA – Action Item No. 10d                                 Page 3 of 7 
Meeting Date: August 8, 2023 
the next decade. Restoring existing load limited and partially condemned moorage facilities to
their full capacity is the first step to meeting these future capacity needs. 
Scope of Work 
This project provides material waterside and landside improvements, including the following: 
 Dock demolition and replacement, relocation of boat house and removal of existing small
boat floats. Demolition of the existing pier deck and structure, including removal or cutoff
of approximately 2,200 creosote piles. Removal and regrading of the existing under pier
slope and replacement of the upland sheet pile wall.
 Placement of approximately 240 prestressed concrete structural piles and approximately
80 steel fender and guide piles, placement of 4 feet of riprap rock and habitat fish mix,
placement of the new concrete precast deck panels, bullrail, utilities, bollards, upgraded 
shore power connection points and appurtenances. 
 Removal of the existing buildings A-310 building (currently leased by American Seafoods),
A-300, A-400, A-301, A-500, A-501 (occupied by Port Operations and police), removal of
existing pavement and installation of deep soil mixing soil amendments, stormwater
treatment system, and surface regrading.
 Installation of two new modular buildings for tenant and Port use, paving and striping,
installation of electric vehicle charging infrastructure, and installation of modernized 
electrical substation to service the buildings and vessels at the pier. 
Berth dredging is not expected to be required to accommodate the current vessel demand;
however, future dredging could be achieved if necessary or desired under a separate project,
covered by C800431 -- Dredge P90 East. 
Diversity in Contracting 
The project team has coordinated with the Diversity in Contracting Department to determine
appropriate Women and Minority Business Enterprise aspirational goals for this project and
identified a 5% contracting goal for the major works contract advertisement. 
Sustainability/Community Outreach 
This project will replace the existing creosote timber pier with a more environmentally
responsible concrete apron.  It is expected that all the existing creosote timber piles will be
removed from the water column, resulting in a significant reduction in the number of piles 
overall. The plans also include a vessel sanitary sewer connection point to eliminate the use of
on-dock collection tanks and resulting truck transport of waste with its associated fuel use and
greenhouse gas emissions. 


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

             COMMISSION AGENDA – Action Item No. 10d                                 Page 4 of 7 
Meeting Date: August 8, 2023 
The design collects and treats all stormwater collected on the new construction areas using a
cartridge filter vault, plus includes additional stormwater treatment elements to treat another
approximately 100,000 square feet of additional pier area outside the project limits. This
additional scope will be funded by the Marine Stormwater Utility as a separate work project
included in this authorization.  Completing this work concurrently provides efficiency in both
design and construction and allows us to treat twice the impervious surface area before
discharging to the Sound. 
The new office structures are planned to be modular construction to reduce site construction
time and construction waste, with energy efficient heating, ventilation, and air conditioning
(HVAC) systems. Solar photovoltaic panels will be installed on the larger of the two buildings and 
sized to produce sufficient power for all that building’s energy use. Both buildings will include EV
charging parking, which is being coordinated with the Port’s fleet management, and covered bike
racks to encourage alternate commuting methods. 
Port staff have been working with terminal users throughout the design to mitigate operational
impacts and have kept the Neighbors Advisory Committee (NAC) informed about the project and 
potential neighborhood impacts.  Outreach included regular updates at the NAC monthly
meetings  which  includes  community  leaders  from  Magnolia  and  Queen  Anne.  During
construction, staff will implement a communication plan to provide specific details to Queen
Anne and Magnolia neighbors, adjacent businesses and T91 tenants with a focus on noise from
the pile driving work. 
Schedule 
All in-water work associated with the work must be completed within the fish window from
August 1 to January 15 of each construction season, with pile driving for steel pile from
September 1 to January 15, a two-month reduction from previous typical fish window permit
work. This presents another constraint to the project that will need to be closely monitored and 
will likely require more than one full fish window construction period to complete the work. Both
federal and local permits are in process and expected to be issued in Q3 of 2023, but if delayed 
this may affect the advertising and construction schedule. 
The construction scope includes several long lead items, including precast concrete elements and
electrical equipment.  As such, while contract execution is expected in 2023, the main site
construction activity is expected to begin just before the start of in water activity in mid-2024.
Minor project elements and some demolition may be accomplished before this if possible. 
Activity 
Commission design authorization               2020 Q1 
Design start                                       2020 Q3 
Commission construction authorization          2023 Q3 
Construction start                                2024 Q2 
In-use date                                       2025 Q4 

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

             COMMISSION AGENDA – Action Item No. 10d                                 Page 5 of 7 
Meeting Date: August 8, 2023 
This request reflects the Engineer’s most recent estimate of construction cost, escalated to the
construction period, including potential project risks. The project team performed a full  risk
analysis of the project at both 30% and 90% design milestones to evaluate potential cost and
schedule risks and quantify them using a Monte Carlo probabilistic analysis. The project total in
this memo represents the 50th percentile estimate from the latest risk analysis update. 
Cost Breakdown                                      This Request           Total Project 
Design                                                            $0             $4,175,000 
Construction                                            $71,825,000            $71,825,000 
Total                                                         $71,825,000             $76,000,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1 – Maintain the status quo. Continue to enable limited operations of the berths for
workboat moorage and keep the load restrictions and condemnation of dock sections in place. 
Cost Implications: This alternative carries significant uncertainty and risk and accordingly much
variability in cost potential.  Maintenance costs for the berth are not currently high but would
expand greatly if a deck failure occurred, for example. 
Pros: 
(1) Lower initial capital cost. 
Cons: 
(1) Significant risk to the structure if kept in use. Deterioration will continue. 
(2) Current berth space demand from the Pacific fishing fleet not met. 
(3) Revenue for these berths would remain minimal. 
This is not the recommended alternative. 
Alternative 2 – Replace the deteriorated timber apron with a concrete apron structure. 
Cost Implications: Total project cost $76 million 
Pros: 
(1)    Brings the berth back to full operation, replacing the deteriorated facility. 
(2)    Provides much needed berth and staging space for the North Pacific fishing fleet. 
(3)    Replacement  of  existing  creosote  pilings  and  apron,  with  far  fewer  concrete
elements. Significant environmental benefits. 
Cons: 
(1)    Higher initial capital cost. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
The current total project estimate has significantly increased from initial planning level estimates 
due to required additional scope, including upland soil improvements to meet current seismic

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

             COMMISSION AGENDA – Action Item No. 10d                                 Page 6 of 7 
Meeting Date: August 8, 2023 
code and resultant building replacements, increased permitting mitigation costs, and historically
high construction escalation over the last several years. Cost increase s have been further
aggravated due to the pandemic and resultant manufacturing and supply chain issues, especially
for long lead items such as electrical equipment.
The current estimate includes significant allowances for continued market volatility, escalation
and construction contingency, but will be completed on a competitive low bid basis.
Cost Estimate/Authorization                     Berth    Additional   Expense          Total 
Summary                         Redevelopment  Stormwater
(U00554)    Treatment
(U00704) 
COST ESTIMATE 
Original estimate                           $40,000,000             $0         $0   $40,000,000 
Previous changes – net                              $0      $100,000         $0       100,000 
Current change                           $35,600,000      $300,000         $0   $35,900,000 
Revised estimate                          $75,600,000      $400,000         $0   $76,000,000 
AUTHORIZATION 
Previous authorizations                     $4,075,000      $100,000         $0    $4,175,000 
Current request for authorization          $71,525,000      $300,000         $0   $71,825,000 
Total authorizations, including this         $75,600,000      $400,000         $0   $76,000,000 
request 
Remaining amount to be authorized                $0            $0        $0            $0 

Annual Budget Status and Source of Funds 
This project is part of the 2023  Capital Plan  under C102475 Terminal 91 Berth 6 & 8
Redevelopment with a total project cost of $70,126,000 and it is included in the draft 2024 Capital
Plan with an updated total project cost of $76,000,000. 
The redevelopment of the berths is being funded by the Tax Levy.  Additional stormwater
treatment work is being funded by the Stormwater Utility. 




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

             COMMISSION AGENDA – Action Item No. 10d                                 Page 7 of 7 
Meeting Date: August 8, 2023 
Financial Analysis and Summary 
Project cost for analysis              $76,000,000 
Business Unit (BU)                  Elliott Bay Fishing and Commercial Operations 
Effect on business performance    The redeveloped berths are expected to increase annual
(NOI after depreciation)             moorage revenue by approximately $900,000 in the first
full year of operation. 
Annual depreciation expense is estimated to increase by
approximately $2.5 million based on an expected useful
life of 30 years. 
IRR/NPV (if relevant)                NPV: ($50+ million) 
ATTACHMENTS TO THIS REQUEST 
(1)   Sustainable Design Strategy (Dec 27, 2023) 
(2)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
January 7, 2020 – The Commission authorized design and permitting funding of $4,000,000. 











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