COMMISSION 
AGENDA MEMORANDUM                        Item No.          6d 
ACTION ITEM                            Date of Meeting        July 28, 2020 
DATE:     July 21, 2020 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Kenneth R. Lyles, Director, Maritime Operations and Security 
Mark Longridge, Capital Project Manager, Seaport Project Management 
SUBJECT:  Authorization for construction of fender system improvements at Terminal 91 
Berths K, L & M (CIP # C801097) 
Amount of this request:               $7,650,000 
Total estimated project cost:           $8,500,000 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to advertise and award a major
public works contract for replacement of 1,270 feet of fender system at Terminal 91 in the
amount of $7,650,000 of a total project cost of $8,500,000 (CIP # C801097) 
EXECUTIVE SUMMARY 
This project will remove and replace the current timber fender system of berths K, L & M in the
Northwest corner of Terminal 91. Replacing the fender system with a stronger, more
environmentally friendly steel system will allow the berth to continue to service a variety of
vessel types and sizes, extending utilization of the pier for another 30-plus years and fostering
tenant retention and its related employment. 
The berths at the northwest corner of Terminal 91 are used primarily for fishing vessels, but
also service research vessels, tugs and barges. The current fender system was installed over 20
years ago and has been repaired several times since then. It is now reaching the end of its
service life. Approximately 30% of the timber piles are severely deteriorated or broken and the
loading capacity of the system is becoming significantly compromised. 
JUSTIFICATION 
Replacement of this essential protective system will allow continued operation of fishing vessel,
barge and other moorage activity in this berth area. The project objective is to fully replace the
deteriorating fender system at the northwest corner of Terminal 91, keeping these berths in
service and avoiding damage to the pier structure. This project supports the Port's guiding
principles of: 

Template revised January 10, 2019.

COMMISSION AGENDA  Action Item No. 6d                                  Page 2 of 6 
Meeting Date: July 28, 2020 
Continue to ensure the safe and efficient operation of Port business gateways to
support the viability of our customers, tenants and suppliers. 
Maintain a long-term strategic view of capital improvements with a priority on
investments that provide long-term, sustainable community and economic benefits 
Throughout the last several years, the Port has been replacing aging treated timber systems at
many of our facilities as they reach the end of their life with steel systems that are longer 
lasting, more environmentally friendly and stronger than the timber systems they replace. 
The current fender pile system at these berths consists primarily of ammoniacal copper zinc
arsenate (ACZA) treated piles, chocks and walers in a conventional arrangement typical of
timber fender systems. While environmentally superior to traditional creosote piles used in the
past, these piles have a relatively short service life under harsh conditions. Several of the piles
currently are broken, rotted or have significant section loss around the waterline. 
The designated use of these berths by industrial customers contributes to accelerated wear of
the current timber system due to chafing and abrasion of the pile faces. Providing a more
durable wear face of high density polyethylene (HDPE or similar) will also be a design priority to
ensure a long life for the new system. 
All in-water work for the installation of the new piles must be completed within the permitted
in-water work window between July 15th and February 15th of each year, while above water
work may be completed outside of this window (upper bullrail work etc.). The project team has
been working closely with operations staff to minimize any impacts to both the construction
and operations schedules.  Phasing and work zone limitations are also planned to be
incorporated into the contract documents to minimize any impacts to cruise and industrial
tenant operations. 
Diversity in Contracting 
The project team is coordinating with the Diversity in Contracting Department to determine
appropriate WMBE aspirational goals for this project.
Community & Tribal Engagement 
The permit process requires notification of and coordination with neighboring communities,
agencies of interest and appropriate environmental groups. Comment is expected and
welcome. Community outreach will occur throughout planning and construction. Staff briefed
the Neighbors Advisory Committee (NAC) which represents Magnolia and Queen Anne at the
group's June 2020 meeting. The Muckleshoot and Suquamish Tribes willalso be consulted
during the permitting process as the waters near Terminal 91 are treaty reserved as "usual and
accustomed" fishing areas. 


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

COMMISSION AGENDA  Action Item No. 6d                                  Page 3 of 6 
Meeting Date: July 28, 2020 
DETAILS 
Scope of Work 
Overall project scope includes the replacement of 1,270 linear feet of old and deteriorated
fender pile system, along with the remaining bullrail and brow at the Northwest corner of Pier
91, with a new galvanized steel fender system to facilitate vessel and barge moorage for
existing lease tenants and transitory barge and ship traffic. 
The fender system will consist of approximately 125 steel piles placed by vibratory driving
methods, topped by an upper steel waler and fender rubber sections to tie the fender system
to the pier. 
The contract documents for this work will allow for construction of the project from either the
land or water side of the pier to maximize the number of eligible bidders. 
The construction contract activities include: 
(1)   Removal of the existing timber fender system, including appropriate disposal of all
treated and creosote pile and timbers 
(2)   Installation of the new steel piles 
(3)   Assembly of the upper fender sections to tie the new piles to the pier 
All pile driving work for this project will use vibratory methods and will conform with the
requirements of the Port's existing programmatic permit for pile replacement. 
Schedule 
This work will be performed under the Port's existing programmatic permit for maintenance
and pile replacement, along with a project specific Hydraulic Permit Approval (HPA).  All
permits for the work have been obtained. 
Operational concerns will have a significant impact on this project schedule. While it would be
possible to complete the construction in the 2020-2021 in-water work window this would
place the bulk of construction during the busiest time on the pier for the fishing fleet.  Also,
the expected intermittent maintenance closures of the Hiram Chittenden locks in late 2020 is
expected to place additional demand on these berths for the upcoming season and may
preclude the closure of the berths for construction during this time.
By waiting approximately 8 months for the start of the 2021-2022 in-water work window to
start construction these tenant impacts can be significantly reduced. For these reasons staff is
recommending the later construction window. The work will still be advertised as soon as final
design is completed and ready to bid. 
Activity 
Commission design authorization               Q4 2019 
Design start                                       Q4 2019 

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

COMMISSION AGENDA  Action Item No. 6d                                  Page 4 of 6 
Meeting Date: July 28, 2020 
Commission construction authorization          Q3 2020 
Construction start                                Q3 2021 
In-use date                                       Q2 2022 
Cost Breakdown                                     This Request           Total Project 
Design (previously authorized)                                     $0               $850,000 
Construction                                             $7,650,000             $7,650,000 
Total                                                         $7,650,000              $8,500,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1  Defer replacement of fender system and continue patching and maintaining
current timber system. 
Cost Implications: Expected costs would be approximately $300-400K per year to spot replace
the currently failed piles and keep the dock in service.  This would not include any potential
damage to the berth structure which would be considerably more expensive to repair and 
would also take the affected berths out of service for a minimum of 6-9 months. 
Pros: 
(1)   Lower initial capital cost. 
Cons: 
(1)   Significant risk to the structure if kept in use. 
(2)   Spot replacement of piles is significantly less efficient and therefore more costly per
pile than system replacement. 
(3)   System will continue to deteriorate, replacement piles installed under this scenario
would have an estimated life of 10-15 years. 
(4)   Construction costs continue to escalate so replacement would cost more in the future,
and still may require shutdowns of the berth in the meantime. 
This is not the recommended alternative. 
Alternative 2  Full replacement of the current deteriorated system with a similar ACZA
(Ammoniacal Copper Zinc Arsenate) treated timber system similar to the current installation. 
Cost Implications: $5,600,000 
Pros: 
(1)   Lower initial capital cost than a steel replacement system. 
(2)   Would provide better protection of the pier than the existing failing system. 
Cons: 
(1)   ACZA piles would have an expected life of 10-15 years based on current performance
and provide a lower level of impact protection compared to a steel system. 

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

COMMISSION AGENDA  Action Item No. 6d                                  Page 5 of 6 
Meeting Date: July 28, 2020 
(2)   Higher costs over the life of the system and more operational disruptions due to more
frequent construction cycles. 
This is not the recommended alternative. 
Alternative 3  Full replacement of the current deteriorated system with a steel system similar
to those previously installed around the Port, starting construction in July 2021 (start of 
2021-22 in-water work window). 
Cost Implications: $8,500,000 
Pros: 
(1)   Robust, durable proven design currently in use at several sites around the Port with
efficient welded construction and all wear surfaces protected.  High recycled content
in both the steel and plastics used.
(2)   Longer life expectancy than timber pile design (approximately 2-3 times as durable) 
(3)   Lowest tenant impact by avoiding busiest period of terminal use for North Pacific
fishing fleet. 
Cons: 
(1)   Higher initial capital cost. 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
Cost Estimate/Authorization Summary               Capital        Expense           Total 
COST ESTIMATE 
Original estimate                                 $6,600,000               $0      $6,600,000 
Current change                                 $1,900,000               0      $1,900,000 
Revised estimate                                $8,500,000                0      $8,500,000 
AUTHORIZATION 
Previous authorizations                            $850,000                0        $850,000 
Current request for authorization                $7,650,000                0      $7,650,000 
Total authorizations, including this request       $8,500,000                0      $8,500,000 
Remaining amount to be authorized                    $0             $0             $0 
Annual Budget Status and Source of Funds 
This project was included in the 2020 Capital Plan under CIP C801097 with a total project cost
of $6,585,000. This project has been included in the draft 2021 Capital Plan with an updated
project cost of $8,500,000.
This project will be funded by the General Fund.

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

COMMISSION AGENDA  Action Item No. 6d                                  Page 6 of 6 
Meeting Date: July 28, 2020 
Financial Analysis and Summary 
Project cost for analysis              $8,500,000 
Business Unit (BU)                  Elliott Bay Fishing & Commercial Operations 
Effect on business performance     This project will support/maintain current moorage
(NOI after depreciation)             revenue at T-91. Incremental depreciation expense from
this project is estimated at $284,000 per year, based on a
30-year asset life. NOI after Depreciation will decrease
by the associated depreciation from this project. 
IRR/NPV (if relevant)                The NPV is present value of the project cost 
CPE Impact                       NA 
Future Revenues and Expenses (Total cost of ownership) 
While a treated timber system would have a lower initial capital cost, it also has a significantly
shorter service life (10-15 years, vs. 30-50 years for a steel system). Conservatively, this results
in the timber option having a significantly higher life cycle cost as it would need to be replaced
at least twice as often. 
Similarly, the cost savings of keeping the current system operational would likely present no
long-term savings even with discounting the risk of a potential catastrophic failure; the system
will still be in need of replacement in a few years and require capital outlay at that time.
Balancing the deferral of these costs against the likely need for more costly repairs due to
vessel damage is not recommended. 
ATTACHMENTS TO THIS REQUEST 
(1)   Presentation slides 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
December 10, 2019  The Commission authorized design and permitting funding in the
amount of $850,000. 






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