shall be responsible for all reasonable and necessary costs, including real estate transaction and environmental documentation costs, associated with the conveyance. (4) Liability (A) Hold harmless An entity to which a conveyance is made under this section shall hold the United States harmless from any liability with respect to activities carried out, on or after the date of the conveyance, on the real property conveyed. (B) Federal responsibility The United States shall remain responsible for any liability with respect to activities carried out before the date of conveyance on the real property conveyed. (5) Additional terms and conditions The Secretary may require that any conveyance under this section be subject to such additional terms and conditions as the Secretary considers necessary and appropriate to protect the interests of the United States. (b) Dillard Road, Indiana (1) Conveyance authorized The Secretary shall convey to the State of Indiana all right, title, and interest of the United States, together with any improvements on the land, in and to the property described in paragraph (2). (2) Property The property to be conveyed under this subsection is the approximately 11.85 acres of land and road easements associated with Dillard Road, including improvements on that land, located in Patoka Township, Crawford County, Indiana. (3) Deed The Secretary shall convey the property under this subsection by quitclaim deed under such terms and conditions as the Secretary determines appropriate to protect the interests of the United States. (4) Reversion If the Secretary determines that the property conveyed under this subsection is not used for a public purpose, all right, title, and interest in and to the property shall revert, at the discretion of the Secretary, to the United States. (c) Port of Skamania, Washington (1) Conveyance authorized The Secretary shall convey to the Port of Skamania, Washington, all right, title, and interest of the United States, together with any improvements on the land, in and