relating to the conveyance under paragraph (1), including costs of surveys and administrative costs, shall be paid by the County school district. (4) Reversion If a parcel of Federal land conveyed to the County school district under paragraph (1) ceases to be used for public recreation or other public purposes consistent with the Act of June 14, 1926 (commonly known as the Recreation and Public Purposes Act ) (44 Stat. 741, chapter 578