The displacing agency may adopt regulations that it deems necessary or appropriate to implement the provisions of the Relocation Assistance Act, including but not limited to regulations necessary to assure that:

A. the payments and assistance authorized shall be administered in as fair, reasonable and uniform a manner as practicable;

B. a displaced person who makes proper application for a payment authorized shall be paid promptly after a move or, in hardship cases, be paid in advance; and

C. any person aggrieved by a determination as to eligibility for relocation payments or the amount of payment under that act may have his application reviewed at a formal hearing before the head of the displacing agency or a hearing officer designated by the head of the displacing agency.