Liz Ruskin / Alaska Public Media

The state of Alaska is preparing to file lawsuits against the federal government over hundreds of contaminated sites that the feds conveyed to Alaska Native corporations. Much of the contamination is on former military installations and dates back to the Cold War or World War II. Sites include a chemical weapons dump in Adak as well as old tank farms all over Alaska and abandoned buildings that contain lead and asbestos. Much of the contamination is on former military installations and dates back to the Cold War or World War II. Sites include a chemical weapons dump in Adak as well as old tank farms all over Alaska and abandoned buildings that contain lead and asbestos. There are 548 sites, and the state filed 548 notices of intent to sue in mid-December.