Except as provided in this Section, the regulations set forth in this Chapter shall not apply to the following areas:

1. parcels within the blocks bounded by West 50th Street, Tenth Avenue, West 56th Street and Eleventh Avenue, provided that in this area the provisions of Sections 96-40 (MODIFICATION OF GENERAL LARGE-SCALE DEVELOPMENT PROVISIONS), 96-51 (Mandatory Tree Planting Provisions) and 96-82 (C6-3X Districts) shall apply.
   
   In addition, for parcels in C6-3X Districts, bounded by West 53rd Street, Tenth Avenue, West 54th Street and Eleventh Avenue, the following shall be permitted uses below the level of any floor occupied by dwelling units: 
   1. automobile dealers listed under Use Group VI with preparation of automobiles for delivery; 
   2. automotive repair and maintenance listed under Use Group VI; and
   3. riding academies or stables listed under Use Group VIII.

For a building that, at the time of approval by the Department of Buildings, included space designed for stable use for riding academies or stables with a ceiling height in excess of 23 feet, as measured from the base plane, then any floor space occupied by accessory parking located on the floor immediately above shall be exempted from the definition of floor area.

1. the block bounded by West 49th Street, Eighth Avenue, West 50th Street and Ninth Avenue which was the site of the former Madison Square Garden;
2. property bounded by West 45th Street, the easterly right-of-way of the Amtrak Empire Line, West 44th Street and Eleventh Avenue, provided that in this area the provisions of Section 96-81 (R10 Districts) shall apply;
3. the block bounded by West 42nd Street, Ninth Avenue, West 43rd Street and Tenth Avenue; or
4. property bounded by West 56th Street, Ninth Avenue, West 57th Street and a line 200 feet west of Eighth Avenue.