A Board of Trustees aggrieved by a decision of the Commission under this chapter may request a hearing before the Commission within 15 days of the date the decision is mailed. A hearing shall be set as soon as practicable but no sooner than 20 days after the request is received by the Commission. The Board of Trustees may: Submit a written statement, 15 copies of which shall be served on the Commission at least 5 days before the hearing; and Appear and present oral argument and evidence on the issues contained in the hearing notice. The Board of Trustees bears the burden of persuasion in a hearing held under §A(1) of this regulation. The Commission shall issue a decision, which shall be served on the Board of Trustees by certified mail, return receipt requested.