The Authority shall have the power to perform any act or carry out any function not inconsistent with state law, whether or not included in the provisions of this article, which may be, or may tend to be, useful in carrying out the provisions of this article. The provisions of the Virginia Public Procurement Act (§ 2.2-4300 et seq.) shall not apply to the Authority in the exercise of any of its powers provided that the Board adopt procedures to ensure fairness and competitiveness in the procurement of goods and services and the administration of its capital outlay plan. The provisions of the Virginia Personnel Act (§ 2.2-2900 et seq.) shall not apply to the Authority in the exercise of any of its powers. The Authority shall be exempt from the provisions of §§ 2.2-1124, 2.2-1131.1, 2.2-1136, 2.2-1149, 2.2-1153, 2.2-1154, and 2.2-1156, provided that (i) the Authority adopts and the Board approves regulations governing the acquisition, lease, or sale of surplus and real property consistent with the provisions of the above-referenced sections and (ii) any acquisition, lease, or sale of real property valued in excess of $20 million shall be approved by the Governor.