SEATTLE, Wash. — Businesses in the 5400 block of Ballard Ave NW are evacuating Saturday morning as the Seattle Fire Department sends a hazmat team to investigate alerts of high amounts of carbon dioxide in a building.
Shortly before noon, the Seattle Fire Department (SFD) said crews detected “dangerous levels” of carbon dioxide and are ventilating the building.
Shortly before 12:30 p.m., SFD determined the air was safe and reopened the building.
5400 block of Ballard Ave NW: hazmat crews detected dangerous levels of CO2 and working to secure the leak. Additional firefighters are ventilating the building.
— Seattle Fire Dept. (@SeattleFire) October 17, 2026
5400 block of Ballard Ave NW: hazmat crews are entering the building to investigate.
— Seattle Fire Dept. (@SeattleFire) October 17, 2026
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