D.C. Mun. Regs. tit. 30, § 2318
2318.1 The contracting officer shall examine all proposals before award for minor informalities or irregularities and apparent clerical mistakes.
2318.2 Communication with offerors to resolve apparent minor mistakes or irregularities shall be only for clarification, not discussion. However, if the resulting communication prejudices the interest of other offerors, the officer shall not award the contract without discussions with all offerors within the competitive range.
SOURCE: Final Rulemaking published at 36 DCR 6681, 6750 (September 22, 1989).