A corrective order issued under this subtitle shall: Specify the provision that allegedly has been violated; Describe the nature and extent of the alleged violation; Require corrective action within a time specified in the order; and State that the person charged will receive a hearing if the person requests the hearing within 10 days after service. Each corrective order issued under this subtitle shall be in writing and shall be served: As a summons is served under the Maryland Rules; or By certified mail. Unless the person charged with a corrective order requests a hearing within 10 days after service, the corrective order becomes a final order. If the person charged with a corrective order makes a timely request for a hearing under subsection (c) of this section, the Secretary shall: Hold a hearing within 20 days after the request is made; and Give the person written notice of the date, time, and place of the hearing, at least 10 days before the hearing date.