Md. Code, Environment § 9–334

(a) The Department shall issue a written complaint if the Department has reasonable grounds to believe that the person to whom the complaint is directed has violated:

(1) This subtitle;

(2) Any rule or regulation adopted under this subtitle; or

(3) Any order or permit issued under this subtitle.

(b) A complaint issued under this section shall:

(1) Specify the provision that allegedly has been violated; and

(2) State the alleged facts that constitute the violation.