RIVERDALE ENVIRON. ACTION COMM v. METROPOLITAN

William Hoppen, New York City, for plaintiffs-appellants. Robert M. Lustberg, New York City (Walter E. Zullig, Jr., New York City, of counsel), for defendants-appellees Metropolitan Transp. Authority and Metro North Commuter R. Co. Randy M. Mastro, Asst. U.S. Atty. (Mary Ellen Kris and Jane E. Booth, Asst. U.S. Attys., Rudolph W. Giuliani, U.S. Atty., S.D.N.Y., New York City, of counsel), for defendant-appellee Urban Mass Transp. Admin.