Md. Code, General Provisions § 4–1A–05

(a) Any applicant, the applicant’s designated representative, or a custodian may file a written complaint with the Board seeking a written decision and order from the Board under § 4–1A–04 of this subtitle if:

(1) the complainant has attempted to resolve the dispute through the Office of the Public Access Ombudsman under § 4–1B–04 of this title; and

(2) the Public Access Ombudsman has issued a final determination stating that the dispute was not resolved.

(b) The complaint shall:

(1) identify the custodian or applicant that is the subject of the complaint;

(2) describe the action of the custodian or applicant, the date of the action, and the circumstances of the action;

(3) be signed by the complainant;

(4) if available, include a copy of the original request for public records and the custodian’s response, if any; and

(5) be filed within 30 calendar days after the complainant receives the final determination of the Public Access Ombudsman under § 4–1B–04 of this title.