D.C. Code § 47-2109

The Council of the District of Columbia is authorized to promulgate regulations to carry out the purposes of this chapter including, without limitation, regulations limiting the period of time a closing-out sale or a sale of goods, wares, or merchandise damaged by fire, smoke, water, or otherwise may be conducted, subject to extension as authorized by § 47-2105; provided, that no such regulation shall be put in effect until after a public hearing has been held thereon.