In this section, “custodian” means the custodian of the records of a zoning map amendment case in the county. Before the Commission sends a zoning map amendment case to the district council, the Commission is the custodian. After the Commission sends a zoning map amendment case to the district council, the district council is the custodian. Correspondence or documents submitted to a custodian shall be received in a record only in accordance with any applicable statute, local law, rule of evidence, or case law. Except as provided in paragraph (2) of this subsection, each application for a zoning map amendment and all official correspondence and records relating to the application, prepared or received in a record by the custodian, shall be made available to the public during the custodian’s regular business hours. Subject to subparagraph (ii) of this paragraph, the custodian may publish rules to prevent any access provided under paragraph (1) of this subsection from unreasonably disrupting the custodian’s official business. Copies of technical staff reports shall be available for the public at the office of the custodian under all circumstances. An individual who personally appears at the office of the custodian may obtain, without charge, a copy of a public document if the document: is of letter or legal size; and pertains to a specific zoning case, including zoning applications and justification statements.