8e. Memo

T91 Submerged Land Area Studies

COMMISSION 
AGENDA MEMORANDUM                        Item No.          8e 
ACTION ITEM                            Date of Meeting        May 9, 2023 

DATE:     March 23, 2023 
TO:        Stephen P. Metruck, Executive Director 
FROM:    Sarah Ogier, Director-Maritime Environment & Sustainability 
Kathy Bahnick, Sr. Manager-Environmental Programs 
Joanna Florer, Senior Environmental Program Manager 
SUBJECT:  Terminal 91 Submerged Land Area – Sediment Feasibility Study and Cleanup Action
Plan 
Amount of this request:                                             $1,900,000 
Total   estimated   Agreed                                       $3,000,000 
Order project cost: 
ACTION REQUESTED 
Request Commission authorization for the Executive Director to (1) sign an Agreed Order 
amendment with the Washington State Department of Ecology to complete Feasibility Study and
draft Cleanup Action Plan for the sediment at the Port’s Terminal 91 submerged land area; and
(2) amend consultant contract to authorize consulting services in the amount of $1,900,000 to
complete the Feasibility Study and draft Cleanup Action Plan. 
No funding is being requested to perform this work because the funding was included in the 2023
– 2027 Environmental Remediation Liability (ERL) Program authorization.
EXECUTIVE SUMMARY
In 2020, the Port and Washington State Department of Ecology (Ecology) negotiated a Model
Toxics Control Act (MTCA) order (2020 Order) to conduct a remedial investigation (RI) of the
sediments in the submerged land area of Terminal 91. The RI will be completed by Q4 2023. 
The next steps in the MTCA cleanup process are to prepare: 1) a feasibility study (FS) that will
identify possible sediment cleanup options, and 2) a draft cleanup action plan (dCAP) that will
identify Ecology’s preferred sediment cleanup approach. An amendment to the 2020 Order is
required to add these tasks, which are anticipated to take 3 years to complete. 


Template revised January 10, 2019.

            COMMISSION AGENDA – Action Item No. 8e                                 Page 2 of 5
Meeting Date: May 9, 2023 
BACKGROUND 
Terminal 91 is in an industrial area in the Interbay neighborhood of Seattle formerly owned and
operated by the US Navy during the World War II era. Since 1991, the Port has been working with
Ecology to address site contamination in the upland portions of the site. The upland cleanup work
was completed in 2015  under an Ecology order issued in 2012. Long-term  groundwater
monitoring and maintenance of the upland cleanup is still ongoing under the 2012 Order. In 2016,
the 2012 Order was amended requiring the Port to conduct two new, separate actions:
1.  A regrade project to regrade the accumulated shoal material along the southeast portion
of Pier 91 in the submerged lands area, which was completed in 2016.
2.  Submerged Lands Preliminary Investigation that was completed in 2018, which indicated
that an RI was warranted for the submerged lands area of Terminal 91 and initiated the
2020 Order.
The sediment cleanup of Terminal 91 submerged lands area is further complicated due to the
existence of discarded military munitions from the Navy’s use of the site.
JUSTIFICATION
The 2020 Order is a binding agreement to perform site environmental investigation work by the
Port. The 2020 Order was approved by Commission; therefore, the amendment also requires
Commission authorization for the Port to continue cleanup activities. By cleaning up the site, the
Port advances the long-term protection of human health and the environment and reduces our
environmental liability.
Diversity in Contracting 
No procurement is needed. The scope to perform this work was included in the consultant scope 
when advertised. The prime consultant is a Women Owned Business and more than 20% of the
future work will be performed by the prime consultant. Additional WMBE firms are also
anticipated to be utilized. 
DETAILS 
The Scope of Work (SOW) detailed in Ecology’s 2020 Order amendment describes the work
required that will require consulting services, sampling and analysis, document preparation,
coordination/meetings with Ecology and the Tribes. The FS will include a summary of key
elements from the RI in compliance with the State sediment cleanup guidance and environmental
policies, collection and chemical analysis of sediment samples for the cleanup evaluation, and a
detailed analysis of each remedial alternative. Upon Ecology approval of the draft FS Report, the 
dCAP will be prepared that will include a general description of the proposed cleanup actions and
will identify Ecology’s preferred sediment cleanup approach.


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

            COMMISSION AGENDA – Action Item No. 8e                                 Page 3 of 5
Meeting Date: May 9, 2023 
Scope of Work
The Order’s Scope of Work will be performed by a professional consulting firm hired by the Port.
As detailed in Exhibit B of the Order, the Scope of Work is divided into the following major tasks: 
(1)   Feasibility Study Work Plan 
(2)   Feasibility Study Investigation (field sample collection, lab analysis, data evaluation) 
(3)   Draft Feasibility Study Report 
(4)   Final Feasibility Study Report with State Environmental Policy Act Compliance 
(5)   Draft Cleanup Action Plan 
Schedule
The draft schedule of the required work associated with the Ecology 2020 Order Amendment is
as follows: 
Activity 
Commission authorization to sign Ecology        Q2 – 2023 
2020 Order Amendment 
Amend consultant contract                     Q3 - 2023 
Prepare an FS Work Plan                        Q1 – 2024 
Draft FS Report                                  Q1 - 2025 
Final FS Report                                    Q4 - 2026 
Draft Cleanup Action Plan                        Q2 - 2027 
Additional future work including cleanup design, implementation, and long-term monitoring and
maintenance will be required to complete the MTCA cleanup process, which will require entering 
a new Order and additional contracting approval request for Commission. Additional scope and
budget information will be provided in the Commission Memo when the design and construction
scope are further developed in 2027 after the dCAP is complete.
Estimated Cost Breakdown 
This Request           Total Project 
Remedial Investigation                                            $0             $1,100,000 
Feasibility Study                                              $1,400,000              $1,400,000 
Draft Cleanup Action Plan                                   $500,000               $500,000 
Total                                                         $1,900,000              $3,000,000 
ALTERNATIVES AND IMPLICATIONS CONSIDERED 
Alternative 1 – Do Not Authorize Signature of the Ecology Order 
Cost Implications: Not signing the 2020 Order amendment would likely result in the issuance of
an enforcement order by Ecology, or Ecology could elect to perform this work itself (i.e., contract


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

            COMMISSION AGENDA – Action Item No. 8e                                 Page 4 of 5
Meeting Date: May 9, 2023 
the work to its support consultant) and bill the Port for the costs. This would likely increase the
Port estimated costs by 1.5 to 2 times.
Pros:
(1)   May  delay  the  Port’s  spending  by  a  year  or  more  while  Ecology  prepares  an
enforcement order. 
(2)   May  delay  the  work  and  costs  while  Ecology  contracts  and  performs  the  work
themselves, then compels the Port to reimburse them for the costs. 
Cons:
(1) Increased legal and staff time and efforts to respond to an enforcement order and provide
ancillary support to Ecology to conduct the order (gain access to the site, etc.).
(2) The ultimate costs of the work will be much higher if Ecology performs the work itself.
(3) Not performing this work could tarnish the Port’s reputation, with Ecology and the
community, as an organization committed to public health and being a steward of
community resources and the environment. 
This is not the recommended alternative. 
Alternative 2 – Authorize the Signing of the Ecology Order and perform the work 
Cost Implications: $1.9M, depending on the findings during the work. 
Pros:
(1)   Complies with the order and furthers the Port’s collaborative working relationship with
Ecology. 
(2)   Takes the next step leading to the Terminal 91’s cleanup and long-term protection of
human health and the environment at Terminal 91. 
(3)   Demonstrates the Port’s value of being a responsible steward of community resources
and the environment. 
(4)   Could potentially identify other responsible parties to share in the cleanup costs.
Cons:
(1)   Costs of approximately $1.9M by the Port to complete the Order amendment’s Scope 
of Work 
This is the recommended alternative. 
FINANCIAL IMPLICATIONS 
No funding is requested. Funding for this work was included in the 2023 – 2027 Environmental
Remediation Liability (ERL) Program. Certain costs may also be eligible for the State remedial
action grant or insurance reimbursement. 
Annual Budget Status and Source of Funds 
Environmental cleanup projects have multiple funding sources: (1) Maritime and Economic
Development non-operating projects are funded by the Port’s Tax Levy; (2) Maritime and
Economic Development operating projects are funded by the General Fund. In addition, there
are supplementary outside sources of funding, including the following: 

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

            COMMISSION AGENDA – Action Item No. 8e                                 Page 5 of 5
Meeting Date: May 9, 2023 
• Contributions from third parties (payment from cost-sharing or contribution agreements
with other liable parties, where the Port functions as a funding conduit for the other liable
parties and the Port holds contracts on behalf of these other liable parties). 
• Settlements with other liable parties. 
• Insurance recoveries from both the Port’s insurers and other liable parties’ insurers; and 
• Department of Ecology grants.
ATTACHMENTS TO THIS REQUEST 
(1)   Washington State Department of Ecology Agreed Order Amendment including Exhibit
A –Scope of Work and Schedule 
PREVIOUS COMMISSION ACTIONS OR BRIEFINGS 
December 10, 2019 – The Commission authorized the Executive Director to sign an Agreed
Order with Ecology to complete a sediment RI at the Port’s Terminal 91 property; and
procure and execute a project-specific contract to complete the scope of work required
by the Ecology Agreed Order and future amendments.
November 29, 2022 – The Commission authorized spending environmental remediation
funds for 2023 in the amount of $11,000,000 and (2) approve a five-year spending plan
for $103,000,000 for the environmental remediation liability program for 2023-2027, of
which an estimated not-to-exceed amount of $30,000,000 will be obligated during 2023
to be spent in future years. 
December 8, 2015 - Commission authorized the Chief Executive Officer to execute Agreed the
Amendment to Order No. DE 8938 with the Washington State Department of Ecology to
perform a historical review and preliminary investigation sampling of the T-91 sediment
and to perform the sediment regrading project. 
September 10, 2013 – Commission authorized maintenance dredging at Terminal 5 and
Terminal 91 for the combined total of $4,800,000. 
March 27, 2012 – Commission authorized the Chief Executive Officer to execute Agreed Order
No. DE 8938 with the Washington State Department of Ecology on the implementation of
a Cleanup Action Plan and to address contamination in the Upland area of Terminal 91. 




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



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