The applicant proposes to construct a 31-story, 290-foot-tall residential building with 647,746 square feet of residential gross floor area with a 9.95 Floor Area Ratio. To accomplish this development the applicant proposes: (1) a rezoning from C-O to C-O-Rosslyn, and (2) a major site plan amendment to SP #85, with requested modifications to the zoning ordinance regarding parking requirements, requested exclusions of certain areas from counting as Gross Floor Area, additional density.