If declared necessary in the public interest by the Public Service Commission, a telephone exchange, public utility pumping station, electric substation using nonrotating equipment, or a natural gas regulator station shall be permitted in an SP District if approved by the Board of Zoning Adjustment as a special exception under § 3104, subject to the provisions of this section.
Use as an optical transmission node shall be permitted in an SP District if approved by the Board of Zoning Adjustment in accordance with the conditions specified in § 3104, subject to the following:
The utilities allowed in § 509.1 and optical transmission nodes in § 509.2 shall be subject to requirements for setbacks, screening, or other requirements, as the Board deems necessary for the protection of neighboring or adjacent property.
D.C. Mun. Regs. tit. 11, r. 11-509