(iii) Orders exceeding the simplified acquisition threshold.
(A) Each order exceeding the simplified acquisition threshold shall be placed on a competitive basis in accordance with paragraph (b)(1)(iii)(B) of this section, unless supported by a written determination that one of the circumstances described at 16.505(b)(2)(i) applies to the order and the requirement is waived on the basis of a justification that is prepared in accordance with 16.505(b)(2)(ii)(B);
(B) The contracting officer shall—
(1) Provide a fair notice of the intent to make a purchase, including a clear description of the supplies to be delivered or the services to be performed and the basis upon which the selection will be made to all contractors offering the required supplies or services under the multiple-award contract; and
(2) Afford all contractors responding to the notice a fair opportunity to submit an offer and have that offer fairly considered.