Maryland Environment Section 6-413
§ 6-413.
  (a)   A license expires on the first anniversary of its effective date, unless the license is renewed for a 1-year term as provided in this section.
  (b)   At least 1 month before the license expires, the Department shall send to the licensee, by first class mail to the last known address of the licensee, a renewal notice that states:
    (1)   The date on which the current license expires;
    (2)   The date by which the renewal application must be received by the Department for the renewal to be issued and mailed before the license expires; and
    (3)   The amount of the renewal fee.
  (c)   Before the license expires, the licensee periodically may renew it for an additional 1-year term, if the business entity or public unit:
    (1)   Otherwise is entitled to be licensed;
    (2)   Pays to the Department the renewal fee that the Department sets; and
    (3)   Submits to the Department a renewal application on the form that the Department requires.