Notwithstanding any other provisions of the Charter or ordinance, jurisdiction over that portion of Elysian Park described in Council File 70-5114 and supplements, containing approximately 21.464 acres which was used as of July 1, 1972, primarily as a police training facility, is transferred to the Department of Public Works for use as public buildings and grounds, including use as police training facilities and related purposes. Such portion shall, upon abandonment of the site as a police training facility, be transferred to the Department of Recreation and Parks and shall be dedicated as a public park.