D.C. Mun. Regs. tit. 20, r. 20-5603
The owner, operator, or authorized representative of an owner or operator shall notify the Department at least five (5) business days before each installation, repair, or upgrade of an UST system and its related components, such as overfill equipment and secondary containment areas, except as provided in § 5603.3. The notice shall be provided on an UST/LUST activity notification form, which is available on the Department's website at https://doee.dc.gov/publication/ust-activity-notification- form. Each owner, operator, or authorized representative shall provide notice of a removal or closure- in-place in accordance with Chapter 61.
In addition to the notice required under § 5603.1, the owner, operator, or authorized representative shall notify the Department orally or in writing of the exact date and time of the installation, repair, upgrade, removal, or closure- in-place of the UST system at least twenty-four (24) hours in advance to schedule an appointment for facility inspections, except as provided in § 5603.3.
In the case of an emergency removal or repair, the owner or operator shall provide notice to the Department and the District Fire Chief within twenty-four (24) hours of learning of the emergency condition.
Before installing or upgrading an US T, the owner or operator shall submit to the Department plans, engineering designs, and specifications prepared by a business licensed to perform UST installations in the District in accordance with § 6500.
Each owner or operator of an UST, including an UST on a federal facility, shall obtain approval of the plans and specifications from the Department before applying for a construction permit from the District Department of Consumer and Regulatory Affairs.
Each owner or operator shall inform the Department orally or on an UST/LUST activity notification form at least twenty- four (24) hours in advance of the exact date and time of any tank tightness test to be conducted on an UST. In the case of emergency testing, notice shall be provided to the Department within twenty- four (24) hours after emergency testing is conducted.
In addition to the notice required by § 5603.6, if a tightness test is performed as a result of a suspected release, the owner or operator shall also inform the District Fire Chief orally or in writing at least forty-eight (48) hours in advance.
D.C. Mun. Regs. tit. 20, r. 20-5603