Section 2408.405-6 - Limiting sources(c)(2) Justifications for limiting sources, under the Federal Supply Schedules when exceeding the simplified acquisition threshold, must be prepared and approved using the latest version of HUD Form 24013.(d)(3) HUD's Chief Procurement Officer, as the Head of Contracting Activity, has delegated the authority to the Deputy Chief Procurement Officer to approve, in writing, justifications for limited source considerations for a proposed Federal Supply Schedule order or Blanket Purchase Agreement (BPA) with an estimated value exceeding $13.5 million, but not exceeding $68 million.