Loading and delivery areas. There shall be provided areas for loading and unloading of delivery trucks and other vehicles and for servicing permitted establishments with refuse collection, fuel and other service vehicles, which areas shall be located at the side or rear of the buildings, shall be adequate in size, shall be so arranged that they may be used without blockage or interference with the use of the accessways or parking facilities, shall be located as far as possible from the residential areas of the facility and shall be constructed so as to be as unobtrusive as possible and screened from abutting properties through landscaping, berming, fencing or walls. There shall additionally be at least one entrance to which there is unobstructed access in accordance with the provisions of Article XXIV, Chapter 210, § 210-220, Zoning. The entrance shall be constructed so that when an emergency vehicle such as an ambulance is parked at the entrance, shelter from the weather is provided to a person who is being loaded or unloaded at the facility.