Template revised April 12, 2018.

COMMISSION

AGENDA MEMORANDUM

Item No.

11b

BRIEFING ITEM

Date of Meeting

June 23, 2026

DATE: June 15, 2026

TO: Stephen P. Metruck, Executive Director

FROM: Sandra Kilroy, Senior Director, Environment and Sustainability

Sarah Cox, Director, Aviation Environment and Sustainability

Sarah Ogier, Director, Maritime Environment and Sustainability

SUBJECT: 2025 Environment and Sustainability Annual Report

EXECUTIVE SUMMARY

2025 was a year of decisive progress for the Port of Seattle’s environmental and sustainability

goals, advancing a greener, more resilient port through a comprehensive strategy rooted in five

key pillars:

1. Leadership: Influencing environmental policy and actions locally, nationally, and

internationally.

2. Partnerships: Collaborating with stakeholders to tackle complex challenges.

3. Data-Driven Decisions: Utilizing clear information to guide our actions.

4. Investment: Directing resources toward sustainable practices.

5. Community Engagement and Equity: Working closely with our neighbors to ensure a just

and sustainable future.

The Port maintains a comprehensive portfolio of environmental initiatives spanning, air, water,

land, and community. We influence change locally and globally, establishing ourselves as a leader

in both the aviation and maritime sectors. Our work supports progress toward the United Nations

Sustainable Development Goals.

As an organization focused on opportunity, sustainability, and equity, we achieve results by

collaborating with partners who share our vision and by sharing our progress transparently.

This annual report presentation serves a dual purpose:

1. Celebrating Achievements: We highlight major 2025 achievements, including record

shore power connections at the waterfront, record pre-conditioned air connections at the

airport, restoration of 450 feet of salmon habitat at Miller Creek, completion of two

significant environmental permits, and launch of the Duwamish Valley Career Navigation

Program.

COMMISSION AGENDA – Briefing Item No. 11b Page 2 of 6

Meeting Date: June 23, 2026

Template revised September 22, 2016.

2. Tracking Long-Term Goals: We document progress toward long-term goals through

performance metrics tracked annually, including a 44% reduction in Port-controlled GHG

emissions (from 2005 baseline), 73% stormwater system rehabilitation, 99% construction

waste diversion at SEA, and continued advancement of Superfund cleanups in the East

Waterway and Lower Duwamish Waterway. Reporting publicly on our progress toward

long-term goals creates transparency for ourselves, our tenants and the community.

A complete formal annual report detailing our full progress will be available on the Port’s website.

This report highlights key accomplishments, but it is not exhaustive. Sustainability is a

collaborative effort, and we are grateful for the contributions of Port leadership, staff, tenants,

tribal governments, community partners, and the residents who help shape a healthier, more

equitable future for the region.

Background

The Port of Seattle’s employees are a powerhouse of expertise. Teams work together to develop

and maintain programs tackling critical issues like decarbonization, habitat restoration,

contaminated site cleanup, water quality, waste reduction, aircraft noise mitigation, and

sustainable infrastructure.

This commitment is reflected in the Port’s ambitious goals outlined in the Century Agenda and

many Port Commission orders and directives since then. The Century Agenda serves as a

compass, guiding decision making and setting a clear course for a greener future. Notably, Goal

4 focuses on environmental leadership, with the Port aiming to become the greenest and most

energy efficient port in North America.

Century Agenda Goal 4: Be the greenest and most energy-efficient port in North America

• Objective 9: Meet all increased energy needs through conservation and renewable

sources

• Objective 10: Meet or exceed agency requirements for stormwater leaving Port-owned

or operated facilities

• Objective 11: Reduce air pollutants and carbon emissions

• Objective 12: Restore, create, and enhance 40 additional acres of habitat in the

Green/Duwamish habitat

Accomplishment Highlights

Outlined in the 2025 Annual Environment and Sustainability Report are eleven key areas with

quantitative and qualitative data points demonstrating our progress toward environment and

sustainability goals.

COMMISSION AGENDA – Briefing Item No. 11b Page 3 of 6

Meeting Date: June 23, 2026

Template revised September 22, 2016.

Category

Summary

2025 Highlights

Charting the Course

to Zero (Climate)

The Port of Seattle takes a multi-pronged

approach to tackling climate change and

improving air quality. Decarbonization is a core

focus, with initiatives like switching to

renewable natural gas for buildings and

partnering on clean fuel research for maritime

and aviation industries.

The Port actively

explores alternatives to traditional fossil fuels,

aiming to reduce reliance on them across its

operations. Additionally, electrification is a key

strategy. The Port is constantly seeking

innovative solutions to minimize air pollution

and contribute to a cleaner future.

Achieved a 44%

reduction in Port-

controlled GHG

emissions from 2005

baseline.

68% of cruise calls

connected to shore

power, a new record.

Highest pre-conditioned

air connection rate

(63%) at SEA.

Stewarding Healthy

Lands and Habitat

The Port is voluntarily taking action to restore

critical habitat and increase public access for

our communities. We are creating a lasting

legacy of stewardship that fosters the health of

our communities and region for generations to

come. Our work supports the survival and

recovery of critical species like salmon and

orcas, while also enhancing the health of our

communities through improved environmental

quality

and enriching recreational

opportunities like waterfront parks, inland

creeks, and marinas.

Restored 450 feet of

salmon habitat and 1.4

acres of floodplain

along Miller Creek.

Planted 6,800 + trees

and shrubs.

Completed fifth year of

kelp monitoring in Elliot

Bay.

COMMISSION AGENDA – Briefing Item No. 11b Page 4 of 6

Meeting Date: June 23, 2026

Template revised September 22, 2016.

Cleaning Up

Contaminated Lands

The Port of Seattle transforms historically

polluted areas into healthy lands near our

airport and waterfront, fostering economic

growth and environmental stewardship.

Advanced East

Waterway cleanup into

final design phase with

EPA.

Removed 11,800 gallons

of PFAS containing

firefighting foam from

SEA.

Secured approximately

$23 million in cost

recovery.

Reducing Waste

Operating a major airport and seaport means

there can be a lot of waste. The airport alone is

a 24/7 operation that serves over 50 million

passengers a year and has over 20,000

employees who work there. It is akin to

managing a city, including the need to manage

all the waste. The Port actively works to

embrace the call to “reduce, reuse and recycle”

in all our facilities.

47% waste diversion

from landfills at SEA.

59.7% diversion for

maritime facilities.

99% construction waste

diversion from SEA

capital projects.

25,000+ meals were

donated to local food

banks.

Building Resilient

and Sustainable

Infrastructure

Building infrastructure that is sustainable and

resilient in the long term is important for

financial stewardship, community affects, and

environmental protection. The Port of Seattle

aims to build and maintain its facilities in a

smart, sustainable way to ensure they function

for our community well into the future.

6 major projects

covering 738,000 sf

pursuing 3

party

certification.

C Concourse Expansion

expected to avoid 90%

of expected CO2

emissions.

Maritime Innovation

Center targeting Living

Building Challenge

certification.

COMMISSION AGENDA – Briefing Item No. 11b Page 5 of 6

Meeting Date: June 23, 2026

Template revised September 22, 2016.

Protecting Water

Quality

Port of Seattle implements programs and

processes, collaborates with our tenants, and

invests in innovative treatment technologies to

ensure we avoid or minimize any effects on the

health of Puget Sound and foster a clean and

vibrant marine environment.

Maritime met all

stormwater permit

requirements.

Achieved 73% progress

toward rehabilitating

maritime stormwater

system) goal of 75% by

2035).

Salmon-Safe

certification maintained

for SEA and maritime

parks.

Lessening the Impact

of Aircraft Noise

SEA was one of the first airports in the country

to establish a Noise Mitigation Program. Since

1985 the Port has been delivering a

comprehensive Airport Noise Program to

minimize noise pollution around the airport.

The program has three main components:

residential sound insulation projects, airline

collaboration and recognition, and community

engagement.

Completed sound

insulation for 200

apartment units.

Launched Repair and

Replace Pilot Program

testing 117 homes.

Advanced Part 150

Noise and Land Use

Compatibility Study

with four public

workshops.

Engaging Our

Community

Recognizing that a healthy environment is vital

for both the port and surrounding

communities, the Port of Seattle prioritizes

collaborative environmental stewardship.

Through education and outreach programs,

the Port empowers near-

port residents and

regio

nal communities to participate in

decision-

making and advocate for

environmental well-being. This commitment to

community engagement fosters trust,

empowers informed decision-

making, and

harnesses the power of collective action for a

more sustainable future.

Conducted over 90

community events and

learning opportunities.

Opened fifth cycle of

South King and Port

Communities Fund with

$500,000 available for

environmental

improvements.

COMMISSION AGENDA – Briefing Item No. 11b Page 6 of 6

Meeting Date: June 23, 2026

Template revised September 22, 2016.

Practicing Equity,

Diversity, and

Inclusion

The Port actively advances Equity, Diversity,

and Inclusion through its environmental

programs. This includes prioritizing business

inclusion programs that empower diverse-

owned businesses, fostering green job

creation, and providing a pathway to economic

opportunity for residents, with a particular

focus on under-

represented communities.

Additionally,

the Port champions

environmental justice initiatives that address

historical disparities in environmental burdens.

Launched Duwamish

Valley Career

Navigation Program

serving 18 residents.

15.3% of contract

utilization went to

Women and Minority

Owned Businesses.

Applied Port’s Equity

Index to numerous

projects.

Awards and

Recognition

Throughout the year, we've strived to

implement innovative solutions and

collaborate with stakeholders to achieve our

sustainability goals. These awards and

acknowledgements represent the dedication

and hard work of our team and partners and

further motivate us to continue on the path of

environmental stewardship and community

engagement.

Achieved top two

ranking in Green Marine

third-party verification

with scores of five in six

categories.

Named global finalist

for IAPH World Ports

Sustainability Awards

for Marine Stormwater

Utility.

ATTACHMENTS TO THIS BRIEFING

(1) Presentation slides

PREVIOUS COMMISSION ACTIONS OR BRIEFINGS

May 13, 2025 – The Commission was briefed on new reporting process and the 2024 annual

report.