§ 219-f. Disposition of emergency projects. Each emergency project shall be removed and disposed of as soon as practicable after the city in which the project is located determines that the emergency declared in this article has ended, but in no event beyond July first, nineteen hundred fifty-four, and provided that an authority or city may contract with the federal government or with an agency or instrumentality thereof for such termination date for occupancy, removal and disposition of an emergency project, and upon such terms, as the federal government or its agency or instrumentality may require.