D.C. Code § 5-1501.07
Section 5 of D.C. Law 19-260 provided that the act shall apply as of the effective date of the Comprehensive Impaired Driving and Alcohol Breath Testing Program Amendment Act of 2012, signed by the Mayor on October 24, 2012 (D.C. Act 19-489; 59 DCR 12957), which became D.C. Law 19-266, effective April 27, 2013.