D.C. Mun. Regs. tit. 20, r. 20-7200
Before an agency, board, commission, or authority of the District of Columbia government shall approve any major action, or issue any lease, permit, license, certificate, or other entitlement or permission to act for a proposed major action, the environmental impact of the action must be adequately considered and reviewed by the District government, as provided in these regulations.
Agencies, boards, and commissions under the Mayor's authority shall integrate, and agencies, boards and commissions not under the Mayor's authority shall be requested to integrate the Environmental Impact Statement (EIS) process with other planning processes at the earliest stages of their planning for major actions they intend to propose, when the widest range of feasible alternatives is open for consideration, and before there has been any irretrievable commitment of resources, in order to ensure that planning and decisions reflect environmental values, in order to avoid delays later in the process, and to head off potential conflicts.
D.C. Mun. Regs. tit. 20, r. 20-7200