(210 ILCS 100/12) (from Ch. 111 1/2, par. 549.12)
    Sec. 12. Whenever the Department determines that there are reasonable grounds to believe that there has been violation of any provision of this Act or the rules and regulations issued hereunder, the Department shall give notice of such alleged violation to the person to whom the license was issued, as herein provided. Such notice shall:
        (a) be in writing;
        (b) include a statement of the reasons for the
issuance of the notice;
        (c) allow reasonable time as determined by the
Department for the performance of any act it requires;
        (d) be served upon the owner, operator or licensee as
the case may require; provided that such notice or order shall be deemed to have been properly served upon such owner, operator or licensee when a copy thereof has been sent by registered or certified mail to his last known address as furnished to the Department; or, when he has been served with such notice by any other method authorized by the laws of this State;
        (e) contain an outline of remedial action, which, if
taken, will be required to effect compliance with the provisions of this Act and the rules and regulations issued hereunder.
(Source: P.A. 78-715.)