Md. Code, Environment § 9–1017

(a) Before the Secretary takes any action under § 9-1016 of this subtitle, the Secretary shall give the water quality laboratory against which the action is contemplated:

(1) Written notice of the charges filed against it; and

(2) An opportunity for a hearing before the Secretary.

(b) The Secretary shall give notice and hold the hearing in accordance with the Administrative Procedure Act.