If the Board of Zoning Adjustment considers that it is appropriate in furthering the objectives of the Waterfront District, a building service trade, including but not limited to plumber, electrician, exterminator, or air-conditioning mechanic shall be permitted as a special exception in the W-1, W-2, and W-3 Districts when authorized by the Board under § 3104, subject to the provisions of § 909.
D.C. Mun. Regs. tit. 11, r. 11-911