This study involved conducting an emissions inventory for stationary point and area sources, as well as nonroad mobile sources of emissions in the Tucson region. The inventory study did not address biogenic emissions or on-road mobile source emissions. The study began in June 2000 and will be completed in September 2001. VOCs are important precursors to the formation of ground level ozone.
Elevated ozone can cause respiratory problems in humans and damage to plants.
The study was conducted from May 2000 to May 2001.