In addition to all other signs permitted in this ordinance, an unlimited number of signs that only identify the name or logo of this district may be located on or incorporated into manhole covers, street light poles, sidewalks, benches, trash receptacles, and other improvements in public areas. No such sign, however, may exceed one square foot in effective area or contain more than three words. (Ord. Nos. 24348; 25918; 30043)