In 1999 Congress approved a land swap in the Cascade Mountains in which Plum Creek Timber gave up 31,000 acres.
In late 1999, Congress approved a land swap involving more than 42,000 acres (17,000 ha) of forest land in the Cascade Mountains. In the deal, Plum Creek gave up 31,000 acres (13,000 ha) of land, much of it along Interstate 90 east of Seattle, in exchange for 11,500 acres (4,700 ha) in Federal lands. 
