VAN KAMPEN UNIT TRUSTS, SERIES 813 TRUST AGREEMENT Dated: November 21, 2008 This Trust Agreement among Van Kampen Funds Inc., as Depositor, The Bank of New York Mellon, as Trustee, Ibbotson Associates, Inc., as Supervisor, sets forth certain...Trust Agreement • November 21st, 2008 • Van Kampen Unit Trusts Series 813
