A chemical tank failure in May has been investigated, and findings show it was deemed unfit for service 10 months prior. An inspection contractor had determined the tank was not suitable for continued use at that time. The tank was located at a paper mill in Washington state.

The inspection findings were made before the tank's failure, which occurred in May. Details of the failure and its consequences are not specified here, but further information is available from the source. The investigation's results indicate a prior warning about the tank's condition, but the circumstances surrounding the failure are not detailed in this summary.

For more information, readers can consult the original report.