Discharge of White Liquor; Longview, Washington

Longview, WA, USA | 2026-May-26

Initial Notification: On the morning of May 26, 2026, the Scientific Support Coordinator (SSC) for Northwest District was notified by the U.S. Coast Guard (USCG) of an explosion at a paper mill plant. The "worst case" discharge is 800,000 of White Liquor, a caustic sodium solution used in paper pulp processing. The Environmental Protection Agency (EPA), USCG, and Washington State are all working with the SSC to respond. The EPA and USCG have requested modeling by the Interagency Modeling and Atmospheric Assessment Center (IMAAC) via the NOAA SSC.