Concerning local government permits for replacing existing culverts.

SB 6154 amends Washington state law to streamline permitting for replacing existing culverts, primarily affecting local governments, contractors, and agricultural landowners. The bill requires applicants to submit detailed plans protecting fish habitat (the sole reason for permit denial), sets a 45-day review timeline for complete applications, and allows for multi-site permits. It includes special provisions for agricultural irrigation and stream bank stabilization projects, permitting them to operate without annual renewal if seasonal conditions persist. The changes aim to clarify permit requirements while maintaining fish habitat protections during culvert replacement projects.