EXHIBIT 1.1 VAN KAMPEN UNIT TRUSTS, MUNICIPAL SERIES 713 TRUST AGREEMENT Dated: August 12, 2008 This Trust Agreement among Van Kampen Funds Inc., as Depositor, The Bank of New York Mellon, as Trustee, Standard & Poor's Securities Evaluations, Inc., as...Trust Agreement • August 12th, 2008 • Van Kampen Unit Trusts, Municipal Series 713
