Air Resources Board has 61 sites statewide. One site is state-owned and the remaining 60 sites are leased. Of these leased sites, 43 support air-monitoring stations and 17 sites support an array of vehicle testing, research, planning, enforcement, chemical laboratory, support services, and administrative needs; one of the support sites is also equipped with an air-monitoring station. These sites serve a multitude of programs the Air Resources Board oversees to support its statutory authority to attain and maintain healthy air quality, reduce the public's exposure to toxic air pollutants, conduct research into the causes of and solutions to air pollution, and support the Air Resources Board leadership role related to greenhouse gas reduction and climate change.