Before the adoption, amendment, or repeal of any rule or regulation, the suspension, revocation, or cancellation of any license pursuant to section 9-620, or the levying of an administrative fine pursuant to such section, the department shall set the matter for hearing. Such suspension, revocation, or cancellation proceedings or proceedings to levy an administrative fine shall be contested cases pursuant to the Administrative Procedure Act.

At least ten days before the hearing, the department shall (1) in the case of suspension, revocation, or cancellation proceedings or proceedings to levy an administrative fine, serve notice upon the licensee or violator by personal service or mail of the time, date, and place of any hearing or (2) in the case of adoption, amendment, or repeal of any rule or regulation, issue a public notice of the time, date, and place of such hearing.