D.C. Mun. Regs. app 12-A-G r. 12-A-G401
Compliance with DOEE's Resilience Rules. Any site improvements in a flood hazard area shall comply with requirements in 20 DCMR Chapter 31.
Approval of Site Improvements. The owner shall obtain code official approval of civil drawings for site work/groundwork pursuant to an application for a civil site work (BCIV) permit, as part of a building permit application, or as otherwise directed by the code official for any proposed development on a development site that is located wholly or partially within a flood hazard area.
Sewer facilities. All new or replaced sanitary sewer facilities, private sewage treatment plants (including all pumping stations and collector systems) and on-site waste disposal systems for any proposed development on a development site that is located wholly or partially within a flood hazard area shall be designed in accordance with Chapter 7, ASCE 24, to minimize or eliminate infiltration of flood waters into the facilities and discharge from the facilities into floodwaters, or impairment of the facilities and systems.
Water facilities. All new or replacement water facilities for any proposed development on a development site that is located wholly or partially within a flood hazard area shall be designed in accordance with the provisions of Chapter 7, ASCE 24, to minimize or eliminate infiltration of floodwaters into the systems.
D.C. Mun. Regs. app 12-A-G r. 12-A-G401