48 CFR §1209.405-1

1. (a)Notwithstanding the suspension, proposed debarment, or debarment of a contractor, contracting officers may continue contracts or subcontracts in existence at the time the contractor was suspended, proposed for debarment, or debarred, if authorized by the SDO and the SDO makes a written determination, consistent with the procedures described in FAR 9.405-1(a) setting forth the compelling reasons for continuing such contract(s) and placing order(s).
2. (b)The SDO is delegated the authority on behalf of the Secretary of DOT to make the written determination required under FAR 9.405-1(b).