Uses not listed in Chapters 17.30 and 17.150 shall be placed into the most similar category. For nonresidential use, the SIC code shall be the first guide. Where an SIC code is found in several categories, the interpretation shall seek similar characteristics, including the intensity of the use and its likely impacts. Where a choice remains after reviewing impacts, the use should be classified with the similar use with the most impacts. (Ord. 1495-96 § 3(part), 1996).