At the discretion of the authority and the Baytown City Council, bonds or notes issued under this chapter may be secured additionally by a mortgage or a deed of trust lien or security interest on facilities or assets of the authority and all real property, franchises, easements, leases, contracts, and rights appurtenant to the properties that vest in the trustee the power to:
Tex. Spec. Dist. Loc. Laws § 8104.308