Maryland Environment Section 4-211
§ 4-211.
  (a)   The Department shall give notice and hold any hearing under this subtitle in accordance with the Administrative Procedure Act.
  (b)   Within 10 days after being served with an order under § 4-209(a)(1) or a notice under § 4-209 (a)(2) of this subtitle, the person served may request in writing a hearing before the Department.
  (c)   The Department may make a verbatim record of the proceedings of any hearing held under this subtitle.
  (d)   (1)   In connection with any hearing under this subtitle, the Department may:
      (i)   Subpoena any person or evidence; and
      (ii)   Order a witness to give evidence.
    (2)   A subpoenaed witness shall receive the same fees and mileage reimbursement as if the hearing were part of a civil action.
    (3)   If a person fails to comply with a subpoena or order issued under this subsection, on petition of the Department, a circuit court, by order, may:
      (i)   Compel obedience to the Department's order or subpoena; or
      (ii)   Compel testimony or the production of evidence.
    (4)   The court may punish as a contempt any failure to obey its order issued under this section.