SPOKANE, Wash. (AP) — The state of Washington and the U.S. Department of Energy on Friday each rejected the other’s proposal to amend a federal court agreement governing cleanup of the Hanford Nuclear Reservation, the nation’s most polluted nuclear weapons production site.

The state sent a letter to federal lawyers saying the Energy Department’s March 31 proposal that would have eliminated many deadlines for Hanford cleanup “is not acceptable to Washington.”