Federal and Alaska officials said June 1 they’re asking Exxon Mobil Corp. to pay an additional $92.2 million to continue restoring shores around Prince William Sound damaged in 1989’s Exxon Valdez oil spill. Under a 1991 settlement, Exxon agreed to pay $900 million in damages over 10 years. But the agreement also had a “reopener” provision that lets the state and federal agencies seek up to $100 million more from the company. The federal-Alaska plan includes $80 million for cleanup work.

Alaska Attorney General David Marquez says habitat “suffered substantial and unanticipated injuries” attributable to the spill. But ExxonMobil spokesman Mark Boudreaux says, “Nothing we have seen so far...indicates that this request for further funding from Exxon is justified.”