Application of Thomas Jefferson Real Estate, LLC, pursuant to 11 DCMR Subtitle X, Chapter 9, for special exceptions under Subtitle H § 1200 from the lot occupancy requirements of Subtitle H § 704.1, and from the ground floor designated use requirements of Subtitle H § 1101.1, and under Subtitle C § 1504 from the penthouse setback requirements of Subtitle C § 1502.1(c)(4), to construct a new, 46-unit apartment house in the NC-6 Zone at premises 818 Potomac Avenue S.E. (Square 930, Lots 10, 14, 800, 801, 816, 817, 828, and 829).