48 C.F.R. § 216.505-70
216.505-70 Orders under multiple-award contracts.
(a) If only one offer is received in response to an order exceeding the simplified acquisition threshold that is placed on a competitive basis, the contracting officer shall follow the procedures at 215.371.
(b) See PGI 216.505-70 for guidance regarding minimum labor category qualifications for orders issued under multiple-award services contracts.