EXHIBIT 2 FIRST AMENDMENT TO AGREEMENT AND PLAN OF MERGER First Amendment, dated as of December 22, 1999 (the "Amendment"), to the Agreement and Plan of Merger, dated as of June 1, 1999 (the "Agreement"), between Peoples Heritage Financial Group, Inc....Agreement and Plan of Merger • December 23rd, 1999 • Banknorth Group Inc /New/ /De/ • National commercial banks • Maine
