Automobile service stations may be permitted as a principal conditional use upon authorization by the Planning Board in accordance with the following standards and site plan review, when required:
A. All storage areas, trash facilities, pits, lifts, and working areas shall be within a building. All lubrication, repair or similar activities shall be performed in an enclosed building, and no dismantled parts shall be placed or stored outside.
B. All gasoline pumps, air pumps and the islands upon which pumps are normally located shall be set back from the street lot line at least 25 feet.
C. A canopy shall be permitted. A canopy shall be no larger than is necessary to provide shelter for the vehicles and attendants associated with the pump area. The canopy may extend to the building. All lighting associated with the canopy shall be directed downward. There shall be a minimum clearance of 14 feet six inches under the canopy, and the total height of the canopy shall not exceed 18 feet. No more than two signs shall be permitted on the canopy. Signs may be internally illuminated and shall not exceed 10% of the surface area of the side of the canopy on which each sign is located.
D. No junked or inoperable motor vehicle or part thereof and no unregistered motor vehicle shall be permitted outside an enclosed service station building. Vehicles awaiting repair may be parked overnight outside an enclosed service station building, but the number of such vehicles shall not exceed two per enclosed service bay.
E. No other uses shall be permitted upon the lot unless such uses are accessory to the principal use as an automobile service station. This restriction shall not preclude incidental retail sales by means of vending machines on a limited basis. However, other uses, including, but not limited to, fast-service restaurants, convenience stores or retail stores, even if otherwise permitted in the zoning district, shall not be permitted.