This air pollution control vehicle, parked outside Burbank City Hall, belonged to the county of Los Angeles, which created Los Angeles County Air Pollution Control District in 1947. The agency recorded emissions from large power plants, refineries, construction equipment, trains, and airplanes. In 1976, state legislation was passed to expand the agency, and the South Coast Air Quality Management District was born. -- Burbank Historical Society. San Fernando Valley History Digital Library.