Md. Code, Local Government § 6–111

(a) If a municipality abates an infraction under a District Court order, the

municipality shall present the defendant with a bill for the cost of abatement by:

(1) regular mail to the defendant’s last known address; or

(2) any other means that are reasonably calculated to give notice of

the bill to the defendant.

(b) If the defendant does not pay the bill within 30 days after it is presented

under subsection (a) of this section, on a motion of the municipality, the District Court

shall enter a judgment against the defendant for the cost of the abatement.