Any easement volume required on a zoning lot pursuant to the provisions of this Chapter may be temporarily used by the owner of the zoning lot for any permitted uses until such time as required by the Metropolitan Transportation Authority or by its designee for subway purposes.

Temporary use of the transit easement volume above curb level in a public plaza or open space area shall be limited to use as a landscaped open area that may contain obstructions permitted in a public plaza. Improvements or construction of a temporary nature within the easement volume for such temporary uses shall be removed by the owner of the zoning lot prior to the time at which public use of the easement area is required. A minimum notice of six months in writing shall be given by the Metropolitan Transportation Authority to the owner of the zoning lot in order to vacate the tenants of such temporary uses.