D.C. Mun. Regs. tit. 21, § 5328
5328.1 In the case of competitive sealed bid procurements, a Contracting Officer may communicate with bidders to resolve apparent minor mistakes or irregularities for the purposes of clarification and not discussion. If the Contracting Officer concludes that resulting communication prejudices the interest of other bidders, the Contracting Officer shall not make an award without communication with all bidders.
5328.2 The Contracting Officer shall not, after receipt of proposals, make an information contained in proposals or the number or identity of proposers available to the public.
SOURCE: Emergency Rulemaking published at 46 DCR 613 (January 22, 1999) [EXPIRED]; as Final Rulemaking published at 46 DCR 7349 (September 17, 1999).