Examples of these sources include consumer products and architectural coatings used in a region. Counties California is divided into 58 counties. The California Air Resources Board has collected information on emissions from air pollution sources since 1969. The emission inventory includes information on the emissions of criteria and toxic air pollutants. After a pollutant is chosen and submitted, an emissions legend appears.
Point sources are fixed pollution sources such as electric power plants and refineries.
To best represent the geographic location of point sources, an effort was made to assess the accuracy of a facility's reported geographic coordinates. Where geographic coordinates were determined to be approximately accurate, these coordinates were used to assign geographic location. When coordinates were found to be incomplete or inaccurate, and facility address, city and zip code information was determined to be accurate and sufficiently complete, geographic location was assigned based on matching reported facility addresses to known address locations. A statistical classification standard underlying all establishment-based federal economic statistics classified by industry. Toxic Air Pollutant Toxics inventory data from this site are available only for the 1996 database year and represent the most current data available.