D.C. Mun. Regs. tit. 27, § 2302
2302.1 The contracting officer shall mail or otherwise furnish to the contractor the executed contract, notice of award, or notice of acceptance of proposal not later than the date of the contract, or as soon thereafter as possible.
2302.2 If the delivery or performance schedule is based on the date of the contract, the contracting officer shall mail or otherwise furnish the executed contract or actual notice of contract execution not later than one (1) working day following the date of the contract.
2302.3 If procurement is by competitive sealed bids and a bid offers delivery or performance based on the date the contractor receives the contract or notice of award, the contracting officer shall evaluate the bid by adding five (5) days to account for time for delivery of the notice or executed contract.
2302.4 If the offered delivery or performance date computed with mailing time is later than the delivery or performance date required by the invitation for bids, the bid shall be considered nonresponsive and shall be rejected.
SOURCE: Final Rulemaking published at 35 DCR 1548 (February 26, 1988).