The underlying ground floor level streetscape provisions set forth in Section 32-30 (STREETSCAPE REGULATIONS), inclusive, shall apply, except that ground floor level street frontages along streets, or portions thereof, designated on Map 3 (Ground Floor Use Requirements) in Appendix A of this Chapter shall be considered Tier C street frontages. In addition, along intersections designated on Map 3, the underlying streetscape requirements for Tier C street frontages shall be modified such that the portion of the ground floor level street frontage that is required to be allocated to non-residential uses shall be further limited to Gowanus retail and entertainment uses.