Public utility and service uses, including communications towers, as defined in a zoning district, may be located on lots of less than the minimum lot size specified for that zoning district. In instances where a smaller lot is used, then said lot shall not thereafter be used for other than a public utility or service use. (Ord. 2009-05 § 15, 2009; Ord. 88-010 § 2, 1988. 2004 Code § 18.50.150.)