D.C. Mun. Regs. tit. 27, § 3218
3218.1 In each contract providing for progress payments, the contracting officer shall include provisions, approved by the Director, giving the District the right to conduct postpayment reviews or audits at the discretion of the contracting officer, including reviews or audits to determine the following:
3218.2 The contracting officer shall conduct progress payment reviews periodically, at intervals of six (6) months or less, and may conduct reviews or audits at any time or upon receipt of any request for a progress payment.
SOURCE: Final Rulemaking published at 35 DCR 1633 (February 26, 1988).