This bill introduces a new section to chapter 43.21C of the Revised Code of Washington (RCW) that categorically exempts certain decisions related to the development or extension of trails or paths from compliance with the state environmental policy act. Specifically, the exemption applies if the proposed trail or path does not exceed 10 acres, is located on an inactive railroad right-of-way designated for interim trail use, and is not situated in designated fish and wildlife habitats or wetland critical areas. The bill also outlines requirements for applicants to engage in meaningful consultation with potentially affected federally recognized tribes, including notifying them through at least two methods and entering mediation if an agreement cannot be reached.

Additionally, the bill clarifies definitions related to critical areas, trail extensions, and the meaning of "trail" and "path" as per existing law. It specifies that improvements covered by this exemption can include utilities and support infrastructure for trails, such as street crossings and signage, but excludes unrelated infrastructure improvements. This new section is intended to streamline the process for developing trails while ensuring that tribal consultation and environmental considerations are addressed.