‘L. Temporary signs placed within the public right-of-way for a maximum of 6 12 weeks per calendar year. A temporary sign may not be placed within 30 feet of another temporary sign bearing the same or substantially the same message. A temporary sign may not exceed 4 feet by 8 feet in size. A sign under this paragraph must be labeled with include or be marked with the name and address of the individual, entity or organization that placed the sign within the public right-of-way and the designated time period the sign will be maintained within the public right-of-way.’