In M1 Districts paired with an R9 or R10 District, the applicable street wall location and minimum base height provisions of paragraph (b) of Section 138-22 (Street Wall Regulations) shall apply, and the applicable maximum height of buildings or other structures and setback provisions set forth in Section 123-66 (Height and Setback Regulations), inclusive, shall apply as modified in this Section.

(a)        In M1 Districts paired with an R9 District, at a height not lower than the minimum base height set forth in Section 138-22, nor higher than a maximum base height of 105 feet, a setback shall be provided in accordance with paragraph (c) of Section 23-662 (Maximum height of buildings and setback regulations). The maximum building height shall be 215 feet;

(b)        in M1 Districts paired with an R10 District whose maximum floor area ratio is 10.0, at a height not lower than the minimum base height set forth in Section 138-22, nor higher than a maximum base height of 155 feet, a setback shall be provided in accordance with paragraph (c) of Section 23-662. The maximum building height shall be 275 feet; and

(c)        in M1 Districts paired with an R10 District whose maximum floor area ratio is 12.0, at a height not lower than the minimum base height set forth in Section 138-22, nor higher than a maximum base height of 155 feet, a setback shall be provided in accordance with paragraph (c) of Section 23-662. The maximum building height shall be 295 feet.