D.C. Mun. Regs. tit. 20, r. 20-6201
A responsible party shall take immediate action to contain and clean up any spill or overfill of a regulated substance from an UST system.
A responsible party shall immediately report any spill or overfill of a regulated substance from an UST system when there is any danger of fire or explosion to the Department by telephone at (202) 535-2600 or by e-mail at ust.doee@dc.gov, and to the District Fire Chief at (202) 727-1614.
A responsible party shall immediately contain and clean up a spill or overfill of petroleum that is less than twenty- five (25) gallons. If the cleanup cannot be completed within twenty- four (24) hours, the responsible party shall immediately notify the Department by telephone or e- mail as stated in § 6201.2.
If a spill or overfill of petroleum results in a release to the environment of more than twenty- five (25) gallons, a responsible party shall report the release to the Department by telephone or e- mail as stated in § 6201.2 within twenty- four (24) hours of the occurrence. The responsible party shall begin corrective action in accordance with the applicable provisions of this chapter.
A responsible party shall immediately report any spill or overfill of a hazardous substance to the Department by telephone or e-mail and the District Fire Chief as stated in § 6201.2, and to the District Homeland Security and Emergency Management Agency at (202) 727-6161. The responsible party shall immediately contain and clean up the spill or overfill. If the cleanup cannot be completed within twenty-four (24) hours, the responsible party shall begin corrective action in accordance with the applicable provisions of this chapter.
In addition to the requirements of § 6201.5, if a spill or overfill of a hazardous substance results in a release to the environment that equals or exceeds the Comprehensive Environmental Response, Compensation, and Liability Act reportable quantity for the substance under 40 CFR Part 302 (Designation, Reportable Quantities, and Notification), a responsible party shall also report the release to the federal government's National Response Center at (800) 424-8802.
If a spill or overfill of petroleum causes a sheen on surface water (such as a lake, pond, stream, river, or creek), a responsible party shall immediately report the release to the Department by telephone or e- mail as stated in § 6201.2, to the District Homeland Security and Emergency Management Agency at (202) 727-6161, and to the National Response Center at (800) 424-8802.
D.C. Mun. Regs. tit. 20, r. 20-6201