All parking areas, including, but not limited to, all parking courts and Driveways where vehicles are parked or stored, whether paved or unpaved (collectively, "parking areas"), must be screened from the street and from any adjoining property by a living screen of evergreen Trees and/or shrubs. All screening is required to be at least 30 inches in height and must be comprised of vegetation having sufficient density to mitigate any potential visual impact that a parking area could have on the street and/or on any adjoining property. All parking area screening or changes to the screening must be approved by the Building Commissioner or the Commissioner's designee. In situations where the topography of the premises and/or the distance between the parking area and the street or an adjacent property or other relevant circumstances serve to mitigate visual impact, the Building Commissioner or the Commissioner's designee, in his or her sole discretion, may waive or modify the screening requirements set forth herein.