The provisions of the Virginia Personnel Act (§ 2.2-2900 et seq.) and the Virginia Public Procurement Act (§ 2.2-4300 et seq.) shall apply to an authority created by a governmental unit exempt from the referendum requirement of § 15.2-5403 in the exercise of any power conferred under this article only to the extent that such provisions would have applied to the sole member of such authority in the exercise of such power directly.