In addition to regulations otherwise required by this Act, the Auditor General shall adopt regulations governing:
(a) the maintenance, disposal and availability for copying of records, work papers and materials in the Office of Auditor General;(b) procedures to be followed in the conduct of investigations by the Auditor General and standards for the delegation to persons who are not his employees of his authority to make investigations;(c) consultation with heads of agencies concerning findings and recommendations in audit reports and investigation reports before the issuance of such reports; and(d) opportunity for persons who may, individually, be the subject of a post audit report or an investigation report to respond to findings or recommendations in the report which pertain to them. In addition to the authority otherwise provided by this Act, the Auditor General, with the approval of the Commission, or the Commission, upon a record vote of at least 3/5 of all its members, may adopt regulations providing for the mandatory financial audit of any specific State agency to be conducted annually.