COMMISSION AGENDA MEMORANDUM BRIEFING ITEM Item No. Date of Meeting 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 11b June 23, 2026 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. Template revised April 12, 2018. COMMISSION AGENDA - Briefing Item No. 11b Meeting Date: June 23, 2026 Page 2 of 6 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. Template revised September 22, 2016. COMMISSION AGENDA - Briefing Item No. 11b Meeting Date: June 23, 2026 Page 3 of 6 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 Portcontrolled GHG emissions from 2005 baseline. 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. Stewarding Healthy Lands and Habitat Template revised September 22, 2016. 68% of cruise calls connected to shore power, a new record. Highest pre-conditioned air connection rate (63%) at SEA. Planted 6,800 + trees and shrubs. Completed fifth year of kelp monitoring in Elliot Bay. COMMISSION AGENDA - Briefing Item No. 11b Meeting Date: June 23, 2026 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. Page 4 of 6 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 Building Resilient and Sustainable Infrastructure 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. 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 3rd party certification. 99% construction waste diversion from SEA capital projects. 25,000+ meals were donated to local food banks. C Concourse Expansion expected to avoid 90% of expected CO2 emissions. Maritime Innovation Center targeting Living Building Challenge certification. Template revised September 22, 2016. COMMISSION AGENDA - Briefing Item No. 11b Meeting Date: June 23, 2026 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. Page 5 of 6 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 SEA was one of the first airports in the country of Aircraft Noise 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. Engaging Our Community Conducted over 90 community events and learning opportunities. 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 regional 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. Template revised September 22, 2016. Launched Repair and Replace Pilot Program testing 117 homes. Advanced Part 150 Noise and Land Use Compatibility Study with four public workshops. Opened fifth cycle of South King and Port Communities Fund with $500,000 available for environmental improvements. COMMISSION AGENDA - Briefing Item No. 11b Meeting Date: June 23, 2026 Practicing Equity, Diversity, and Inclusion Awards and Recognition Page 6 of 6 The Port actively advances Equity, Diversity, and Inclusion through its environmental programs. This includes prioritizing business inclusion programs that empower diverseowned 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. 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. 15.3% of contract utilization went to Women and Minority Owned Businesses. Applied Port's Equity Index to numerous projects. 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. Template revised September 22, 2016.