This district is composed of the area of the City whose principal use is or ought to be light manufacturing, warehousing, and other limited industrial uses. These uses generate a minimum of noise, glare, odor, dust, vibration, air and water pollutants, fire, explosive, radioactive and other hazards, and harmful or obnoxious matter. This district is provided to permit the development of these industrial uses, to protect adjacent areas against encroachment by incompatible uses, and to lessen congestion on public streets. To these ends, certain uses which would function more effectively in other districts and would interfere with the operation of these industrial activities and the purpose of this district have been excluded.