D.C. Mun. Regs. tit. 15, § 1503
1503.1 Substantial modification of a Certificate application requires withdrawal of the original application and submission of a new application reflecting the modifications.
1503.2 For the purposes of this section, a change of ten percent (10%) or more from the applicant's original operating budget or a change in ownership shall be deemed to be a substantial modification. The Commission may deem other examples as substantial modifications of the application.
1503.3 The new application shall constitute a wholly separate application and shall be subject to all elements of the review process, including written notification proceedings, unless waived by the Commission.
SOURCE: Final Rulemaking published at 38 DCR 16, 20 (January 4, 1991).