All manufacturing activities shall be conducted within an enclosed building, except that external storage of materials shall be permitted, provided that the storage area shall be visually screened from all streets and adjoining commercial and residential properties with a noncombustible fence or wall, or with a non-deciduous planted screen at least five feet in height and at least 80% solid; such fence or wall shall be of such design and constructed of such material and maintained in such manner as shall be in keeping with the character of the area.
(Prior Code, § 153.373) (Ord. D-1418, § 1804, passed 11-22-1982, effective 1-21-1983)