D.C. Mun. Regs. tit. 11-F, § 100
100.1 Subtitle F is to be read and applied in addition to the regulations included in:
(a) Subtitle A, Authority and Applicability;
(b) Subtitle B, Definitions, Rules of Measurement, and Use Categories;
(c) Subtitle C, General Rules; and
(d) Subtitle U, Use Permissions.
100.2 Geographically modified zones are indicated by letters following the base zone name, such as RA-2/RC or RA-4/DC.
100.3 For those geographically modified zones, the zone boundaries are described in Subtitle W, Specific Zone Boundaries, and identified on the official Zoning Map.
SOURCE: Final Rulemaking published at 63 DCR 2447, 2915 (March 4, 2016 – Part 2); as amended by Final Rulemaking published at 70 DCR 011297 (August 25, 2023).