On and after July 30, 1948, direct allotments from appropriations for the maintenance and improvement of existing river and harbor works, or from other available appropriations, may be made by the Secretary of the Army for the collection and removal of drift in Baltimore Harbor and its tributary waters, and this work shall be carried out as a separate and distinct project.
(June 30, 1948, ch. 771, title I, § 102, 62 Stat. 1173.)