D.C. Code § 2-218.41

(a) Each agency, including an agency that contracts or procures in whole or in part through the Office of Contracting and Procurement, shall exercise its contracting and procurement authority so as to meet, on an annual basis, the goal of procuring and contracting 50% of the dollar volume of its expendable budget to qualified small business enterprises.
(a-1) If the agency determines in writing that there are not at least 2 qualified small business enterprises, the agency may use any qualified certified business enterprises to fulfill the requirements of subsection (a) of this section.
(a-2) (1) An agency that cannot meet the requirements of subsections (a) and (a-1) of this section shall notify the Mayor and shall be prohibited from spending its remaining expendable budget with non-small business enterprises or non-certified business enterprises.
(2) The Mayor may waive the prohibition set forth in paragraph (1) of this subsection and grant approval for the agency to spend its remaining expendable budget with non- small business enterprises or non-certified business enterprises.
(a-3) By October 1, 2015, and no later than October 1 of each succeeding year, an agency shall submit to the Department:
(1) A spending plan that details how an agency intends to spend its expendable budget with small business enterprises and certified business enterprises during the fiscal year; and
(2) An annual allocation letter signed by the agency director on a form prescribed by the Department that specifies the agency’s 50% expendable budget goal.
(b) Repealed.
(c) The provisions of this subchapter relating to contracting and subcontracting goals and requirements shall be applicable to every government-assisted project unless the Department, by regulation, establishes a specific exemption for a particular type or class of government-assisted project.