(a) A show-cause order issued under this subtitle shall:
(1) Specify the provision that allegedly has been violated;
(2) Describe the nature and extent of the alleged violation;
(3) Require the person charged to appear at a hearing and show cause why an order requiring corrective action should not be issued; and
(4) State the date, time, and place of the hearing.
(b) Each show-cause order issued under this subtitle shall be in writing and shall be served:
(1) Not less than 20 days before the time set for the hearing; and
(2) As a summons is served under the Maryland Rules or by certified mail.