For any development or enlargement seeking:

(a)        modification to the level of waterfront yard provisions of Section 127-22 (Special Yard Regulations);

(b)        a certification pursuant to paragraph (b)(1) of Section 127-422 (Certification for a publicly accessible private street); or

(c)        a certification pursuant to Section 127-542 (Supplemental provisions),

the Chairperson of the City Planning Commission shall certify that a site survey has been conducted and sufficient documentation has been submitted, demonstrating that the proposed grades of a waterfront yard, interim plan for a publicly accessible private street or upland connection would not preclude developments or enlargements on adjacent parcels from complying with the provisions of this Chapter as part of an integrated public realm.