To exercise the right of eminent domain in the following manner: If any plans and surveys provided for in this Act have been approved by the Department, and the resolution presented to the county board adopted as in this Act provided, require that private property be taken or damaged, the County Airport Commission in the name of the county shall have the right to purchase the necessary land from the owner thereof, or if compensation therefor cannot be agreed upon, to have such just compensation ascertained and to acquire and pay for such property in the same manner as near as may be, as provided for in the Eminent Domain Act; provided, that the commission shall not be required, in any case, to furnish a bond.