D.C. Mun. Regs. tit. 19, § 4330
4330.1 The CCO may use a definite quantity contract that provides for delivery of a specified quantity of supplies or services either at specified times or when ordered. Quantities ordered under a definite quantity contract shall be limited to the quantity stated in the contract, unless the contract contains an increased quantity option.
SOURCE: Final Rulemaking published at 55 DCR 493 (January 18, 2008).