The bill proposes the introduction of a special license plate series featuring Mount St. Helens, which will showcase an image of the volcano. This new plate will be added to the existing special license plates approved by the Washington Department of Licensing, with an initial fee of $40 and a renewal fee of $30. The bill also amends current laws to allocate proceeds from these special plates to support education, stewardship, and scientific research related to Mount St. Helens through the Mount St. Helens Institute. It reenacts and amends several sections of the Revised Code of Washington (RCW), including RCW 46.18.200, 46.17.220, and 46.68.420, to incorporate the new license plate and update existing language regarding fees and funding conditions.

Additionally, the bill establishes eligibility criteria for cities to receive construction funds for public tennis facilities, prioritizing the most populous eligible city without existing facilities that have at least four indoor tennis courts. Maintenance funds will be available to the first city that utilizes construction funds from a specific chapter of Washington law. The bill also mandates that at least 90 percent of funds from the Seattle Seahawks and Seattle Mariners special license plate accounts be allocated to youth and fellowship programs. A new section is introduced to define the "Mount St. Helens license plate," and the act is set to take effect on November 1, 2025.