D.C. Code § 42-3141.04: Deemed authorization to abate.

If the owner does not reply as provided for in § 42-3141.03(b)(1), (b)(2), or (b)(3), the owner shall be deemed to have authorized the Mayor to abate the graffiti. The Mayor may then abate the graffiti as if the owner had provided authorization under § 42-3141.03(b)(2).