For the purposes of applying to this Chapter the special ground floor level streetscape provisions set forth in Section 37-30, any portion of a ground floor level street frontage of a zoning lot in a Commercial District located within 50 feet of street lines along the elevated rail structure on Jerome or River Avenues and, in Subdistrict A, for Subareas A1 or A2, a ground floor level street frontage along streets, or portions thereof, designated on Maps 2 and 3 in the Appendix to this Chapter, shall be considered primary street frontages. A ground floor level street frontage along any other street shall be considered a secondary street frontage. For the purposes of this Section, defined terms shall include those in Sections 12-10 and 37-311.

The provisions of this Section shall apply to developments or ground floor level enlargements.

(a)        Along primary street frontages

For buildings with primary street frontage, or portions thereof, uses on the ground floor level, to the minimum depth set forth in Section 37-32 (Ground Floor Depth Requirements for Certain Uses), shall be limited to non-residential uses, except for Type 1 lobbies and entrances and exits to accessory parking spaces provided in accordance with the applicable provisions of Section 37-33 (Maximum Width of Certain Uses). Group parking facilities located on the ground floor level shall be wrapped by floor area in accordance with the provisions of paragraph (a) of Section 37-35 (Parking Wrap and Screening Requirements). Ground floor level street walls shall be glazed in accordance with the provisions set forth in Section 37-34 (Minimum Transparency Requirements).

(b)        Along secondary street frontages

For buildings with secondary street frontage, or portions thereof, all uses permitted by the underlying district shall be permitted on the ground floor level, provided that any accessory off-street parking spaces on the ground floor level shall be wrapped or screened in accordance with Section 37-35.

The level of the finished floor of such ground floor shall be located not higher than five feet above nor lower than five feet below the as-built level of the adjoining street.