Such units of local government who wish to be approved, shall submit a copy of such ordinance including all amendments to the Department requesting approval for such system of regulation and inspection. If such plan is approved by the Department the ordinance shall prevail in lieu of the state licensure, fee and inspection program, and the Department shall issue written approval. Not less than once each year the Department shall evaluate the program to determine whether such program is being operated in accordance with the approved provisions of existing ordinances. If the Department finds after investigation that such program is not in accordance with the approved program or is not being enforced, the Director shall give written notice of the findings to the chief administrative officer of such unit of local government. If the Department thereafter finds, not less than 30 days after the giving of such notice that the program is not being conducted in a manner consistent with existing ordinances, the Director shall give written notice of such findings to the chief administrative officer of the unit of local government, and after administrative hearing as provided in this Act, all persons then operating under such unit of local government shall be immediately subject to the state licensure, fee and inspection program.
225 ILCS 225/10