D.C. Code § 28-4102: Overcharging.

(a)

It shall be unlawful for any person to charge more than the normal average retail price for any merchandise or service sold during an emergency that resulted from a natural disaster, if an emergency has been declared pursuant to subsection (b) of this section.

(b)

(1)

Within 48 hours of a natural disaster, the Mayor may declare, for not more than 30 calendar days, a state of emergency for the purposes of this act. The Mayor shall prepare an emergency declaration that shall include a description of the existence, nature, extent, and duration of the emergency.

(2)

Upon the issuance of a declaration of an emergency or as soon as practicable given the nature of the emergency, the Mayor shall publish a copy of the emergency declaration in the District of Columbia Register and in 2 daily newspapers of general circulation.