The following conditions shall apply to the provision of off-street loading berths:
(a) Each loading berth shall be easily accessible from a street or alley without substantial interference with traffic.
(b) Each loading berth shall be hard surfaced or surfaced with gravel, crushed stone or similar material, with adequate dust treatment.
(c) Space allocated to required off-street loading berths may not be included in required off-street parking areas, nor shall an off-street loading berth be used for normal vehicle repair or service work.
(d) All required loading berths shall be on the same lot as the use served.
(e) Off-street loading berths abutting the side or rear yard of a residential district shall be suitably screened or fenced from view.
(f) No loading berth shall be located in a required front or side yard. If located in a required rear yard, the berth shall be open to the sky.