D.C. Mun. Regs. tit. 27, § 4021
4021.1 A certificate of conformance may be used instead of source inspection, whether the contract calls for acceptance at the source or at destination, at the discretion of the contracting officer, if the following conditions apply:
4021.2 Even if a certificate of conformance is used pursuant to §4021.1, the District's right to inspect goods, services, and construction under the inspection provisions of the contract shall not be prejudiced.
SOURCE: Final Rulemaking published at 35 DCR 1724 (February 26, 1988).