A certified facility shall: Have a garage with a concrete floor and a minimum dimension of 15 feet wide and 45 feet long; and Be equipped with: A wheel dolly for removing wheels from a bus, A minimum of four heavy-duty jack stands and one 12-ton hydraulic jack or air jack, and The proper tools for removing wheels, drums, and rotors from the bus, including drum and disc micrometers. A certified facility's inspection area shall be free of work benches, displays, machines, shelves, stairways, or other obstructions which could create a hazard.