(a) Any city or county which has adopted a STAR bond project plan in accordance with the provisions of this act may purchase or otherwise acquire real property in connection with such project plan. Upon a 2/3 vote of the members of the governing body thereof, a city or county may acquire by condemnation any interest in real property, including a fee simple title thereto, which it deems necessary for or in connection with any project plan of an area located within the project district; however, eminent domain may be used only as authorized by K.S.A. 26-501b, and amendments thereto. Any such city or county may exercise the power of eminent domain in the manner provided by K.S.A. 26-501 et seq., and amendments thereto. In addition to any compensation or damages allowed under the eminent domain procedure act, such city or county shall also provide for the payment of relocation assistance as provided in K.S.A. 12-17,173, and amendments thereto.