{Washington, D.C.}...In a ruling Friday, U.S. District Judge Amy Berman Jackson in Washington, D.C., ruled in favor of St. Louis-based Arch Coal, declaring a U.S. Army Corps of Engineers water pollution permit for the Spruce No. 1 mine in Logan County is "valid and in full force." The EPA vetoed the corps' permit for the mine in January 2011, saying it would cause irreparable damage to the environment.