Section 23-4-5 - Notice of hearing(a) Upon determination by the department to proceed with a hearing, the department shall give written notice to all parties of the hearing by registered or certified mail with return receipt at least fifteen days prior to the hearing date to include:(1) The date, time, and place of the hearing;(2) The legal authority under which the hearing is held;(3) The statutory provisions, rules, or order in question;(4) The issues involved and the facts alleged by the department in support of the allegations; and(5) Notification to all parties of their rights to retain counsel or substitutes pursuant to section 91-9, Hawaii Revised Statutes.(b) If the process to serve mail is refused by a party, or the department is unable to ascertain the address, or locate the party, a public notice shall be issued in a newspaper of general circulation announcing the new hearing date. Unless otherwise notified prior to the new hearing date, the petition shall be nullified.[Eff APR 15 2000] (Auth: HRS § 353C-2) (Imp: HRS § 91-9.5)