Within the Special Hillsides Preservation District, no zoning lot existing on June 30, 1987, may be subdivided without certification by the City Planning Commission that the proposed subdivision complies with the regulations of the Special Hillsides Preservation District and that all hillsides are preserved to the greatest extent possible under future development options.

A plan for such subdivision shall be filed with the Commission and shall include a survey map indicating existing topography at two-foot contour intervals and all individual trees of six-inch caliper or more.

When a zoning lot existing on June 30, 1987, is intended to be subdivided and is more than five acres, a site plan of the entire subdivision shall be filed with the Commission. The site plan shall include the proposed vehicular circulation system within the area, block and zoning lot layouts and any other information required by the Commission.

In the event that any zoning lot proposed for subdivision contains a development, enlargement or site alteration that has been undertaken contrary to the provisions of this Chapter, the Commission shall not approve the subdivision until violations are removed from the zoning lot, in accordance with the Commission's requirements under Section 119-40 (COMPLIANCE).