Weekend lightning storms sparked several wildfires over the weekend at Hanford, including one that spread over 9,000 acres.
None of the fires came close to any buildings or nuclear facilities.
The one large fire was at Gable Mountain in the center of the Hanford nuclear reservation.
The mountain is considered a tribal cultural and biological sensitive area, with workers not allowed there unless authorized.
The 580-square-mile Hanford site was used to produce plutonium for the nation’s nuclear weapons program during World War II and the Cold War. Environmental cleanup of radioactive and other chemical cleanup left from production years is expected to continue at the nuclear reservation for decades.