9900.1 The definitions in this chapter apply throughout this subtitle.

9900.2 Definitions applicable to separate chapters appear in those chapters.

9900.3 A word used in this subtitle but not specifically defined in this section, or specifically defined for the purposes of a chapter, has the meaning given in the current edition of Webster's Unabridged Dictionary.

9900.4 The following rules of interpretation apply throughout this subtitle:

1. (a) Words in the present tense include the past and future tense, and variations thereof;
2. (b) Gender-specific words apply to either gender;
3. (c) Words in the singular include the plural, and vice versa; and
4. (d) The word "shall" is mandatory and not discretionary.

9900.5 The Mayor's Agent, State Historic Preservation Officer, and Historic Preservation Review Board shall decide any disagreement over interpretation of the definitions applicable to their respective areas of responsibility.

Authority: D.C. Code §§ 6-1101 et seq., Mayor's Orders 79-50, 83-119, 2002-155.

SOURCE: Notice of Final Rulemaking published at 51 DCR 7447 (July 30, 2004).