D.C. Code § 2-214.02: Rules.

Within 90 days of March 26, 2008, the Mayor, pursuant to subchapter I of Chapter 5 of this title, shall issue rules to implement the provisions of this subchapter. The proposed rules shall be submitted by the Mayor to the Council for a 45-day period of review, excluding weekends, holidays, and days of Council recess. If the Council does not approve or disapprove the rules within the 45-day review period, in whole or in part, by resolution, the rules shall be deemed approved.