‘Condemnation’ or ‘condemn’ means the acquisition by the exercise of the power of eminent domain of property for any project, or an interest therein, herein authorized. A county may exercise in the State the power of eminent domain and in the manner provided by law for the condemnation of private property for public use, may take any property necessary to carry out any of the objects or purposes hereof, and may condemn any existing works or facilities in the county now or hereafter used. The power of eminent domain vested in the board shall include the power to condemn, in the name of the county, either the fee simple or any lesser estate or interest in any real property which the board by resolution shall determine is necessary for carrying out the purposes hereof. Such resolution shall be prima facie evidence that the taking of the fee simple or easement, as the case may be, is necessary.