In any C6 District in the Special West Chelsea District, the provisions of Section 32-422 (Location of floors occupied by commercial uses) are modified to permit commercial uses on the same story as a residential use or on a story higher than that occupied by residential uses, provided that the commercial uses:

(a)        are located in a portion of the building that has separate direct access to the street with no access to the residential portion of the building at any story; and

(b)        are not located directly over any portion of a building containing dwelling units, except this limitation shall not preclude the location of:

(1)        residential lobby space below or on the same story as commercial uses; or

(2)        a commercial use that fronts on the High Line and is located within five feet of the level of the High Line bed.