Statutory Text
(b) If service is made by certified mail, return receipt requested, bearing a postmark from the United States Postal Service, the person who mails the document shall file with the Department verified proof of mailing.
(c) Any notice that requires filing of a report, attendance at a hearing, or both shall be served at least 10 days before the earlier of:
(1) The time set for the hearing, if any; or
(2) The time set for the filing of the report, if any.