Emission Inventory Documentation
This page last reviewed February 11, 2013
Air pollution comes from a wide variety of sources. It comes from large industrial facilities, as well as from things we use in our daily lives such as cars and trucks, paints, and aerosol spray products. For convenience, we have grouped air pollution sources into five major categories that are listed below.
Off-road mobile sources include the following categories: small off-road engines and equipment, off-road recreational vehicles, farm and construction equipment, forklifts, locomotives, commercial marine vessels, and marine pleasure craft. Emission Data
Natural sources are non-manmade emission sources, which include biological and geological sources, wildfires, windblown dust, and biogenic emissions from plants and trees. Emission Data