D.C. Mun. Regs. tit. 27, r. 27-4009
In determining the type and extent of District contract quality assurance to be required for small purchases, the contracting officer shall consider the criticality of application of the goods or services, the amount of possible losses, and the likelihood of uncontested replacement of defective work.
Except as provided in § 4009.5, when the circumstances set forth in § 4004.6 exist, the District shall inspect shall purchases at destination only for type and kind, quantity, damage, operability, and may inspect for preservation, packaging, packing, and marking, if applicable.
Except as provided in § 4004.6, detailed District inspection may be limited to those characteristics that are special or likely to cause harm to personnel or property.
Except as provided in § 4004.6, when repetitive purchases of the same item are made from the same manufacturer with a history of defect-free work, District inspection may be reduced to a periodic check of purchases.
In special situations such as those specified in § 4007, the contracting officer may require more detailed quality assurance.
D.C. Mun. Regs. tit. 27, r. 27-4009