D.C. Code § 6-504: Review of excavation, grading, filling, or construction permit applications; mudslide hazards.

The Mayor shall review each permit application for any excavation, grading, fill, or construction to determine whether the proposed site and improvements will be reasonably safe from mudslides. If a proposed site and improvements are in a location that may have mudslide hazards, a further review shall be made by persons qualified in geology and soils engineering; and the proposed new construction, substantial improvement, or grading must:

(1)

Be adequately protected against mudslide damage; and

(2)

Not aggravate the existing hazard.