Most evacuations have been lifted for residents in Garden Grove after authorities determined that the threat of a catastrophic toxic chemical tank explosion had been eliminated. About 16,000 people remain under evacuation orders in the Orange County community,

Water samples taken overnight confirmed that chemicals leaked into the river when a 900,000-gallon tank containing caustic "white liquor" ruptured.

At least one person is dead and eight people are being treated for injuries after a chemical vat imploded at Southwest Washington paper mill Tuesday morning.