The Chairperson of the City Planning Commission may, by certification, modify or waive a required visual corridor, as defined in Section 62-11, with respect to developments, including minor modifications thereto, that contain designated open space and a portion of the waterfront esplanade, where such development is conditioned upon a restrictive declaration that includes a site plan for such development, including provisions for public access to such designated open space and waterfront esplanade, provided that at least one required visual corridor continues to be provided pursuant to the restrictive declaration.