The bill aims to reduce environmental and health disparities in Washington state, particularly within large port districts, by establishing a framework for environmental justice. It introduces a new chapter in Title 53 RCW, which includes definitions relevant to environmental health impacts, overburdened communities, and vulnerable populations. Qualifying port districts are required to develop an environmental justice implementation plan that outlines specific goals, metrics for tracking progress, and strategies for community engagement. Additionally, by January 1, 2026, these districts must adopt a community engagement plan to ensure equitable participation from affected communities in decision-making processes.

Furthermore, the bill mandates that any significant port actions initiated after January 1, 2026, must undergo an assessment of their potential cumulative impacts on overburdened communities and vulnerable populations. This assessment must be conducted in collaboration with the University of Washington's department of environmental and occupational health sciences and the local county health department. The port districts are also empowered to allocate funds for remediation and mitigation of environmental impacts, ensuring that they address the needs of overburdened communities. Overall, the legislation emphasizes the importance of integrating environmental justice principles into port district operations and decision-making processes.