The requirements of this Section shall apply to zoning lots, any portion of whose finished ground elevation is within 30 feet of the elevation of the view plane located above the zoning lot. At the time of filing with the Department of Buildings, for any application for an excavation permit or a building permit for a development or enlargement or site improvement on such

zoning lots within a Special Scenic View District, a landscaping plan shall be submitted to the City Planning Commission indicating that future landscaping on the site will not impair scenic views from the view reference line. Such plan shall indicate existing topography, trees, shrubs, buildings or other structures and proposed landscaping. All future landscaping on the site shall be in accordance with the approved landscaping plan on file with the Commission. The Commission shall submit a copy of the approved landscaping plan to the Department of Buildings or other appropriate city agency having jurisdiction.