18-29-1003.6.1 Garages.
   In areas of garages where motor fuels are dispensed or where motor vehicles are serviced, each floor drain shall be properly trapped. In other garage areas or parking facilities, floor drains need not be trapped. Floor drains above the level of the basins shall connect to a stack extending independently to the outer air and the vents of the basins shall be connected 6 inches (152 mm) or higher than the lowest floor drain.