If the United States Government shall so determine, it may condemn and use all lands and property which may be needed for the purposes set forth in § 3-5-310 under the authority of the United States Government and according to the provisions existing in the Federal statutes for condemning lands and property for the use of the United States Government. In case the United States Government shall so condemn such lands and property, the Department of Health and Environmental Control may pay all expenses of the condemnation proceedings and any award that may be made thereunder out of any moneys appropriated or which may be appropriated for such purposes.