The purpose of this zoning classification is to allow light industrial uses or structures where the primary use involves fabrication, manufacturing, assembly, processing and distribution of predominately prefabricated materials. Such uses are expected to be non-nuisance industries. Light industries are expected to refrain from activities that generate environmental pollutants such as noise, smoke, dust, odors, toxic gases, vibration, glare and heat. [Ord. 94-005, § 17, 1-3-94.]