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National Air Pollutant Emission Trends: 1900-1998

(March 2000) EPA 454/R-00-002


The National Air Pollutant Emission Trends Report, 1900-1998 document presents the estimate of national emissions of the criteria air pollutants. The emissions of each pollutant are estimated for many different source categories, which collectively account for all anthropogenic emissions. The Report presents the total emissions from all 50 states. These estimates are updated annually. The emission trends are the net effect of many factors, including changes in the nation's economy and in industrial activity, technology, consumption of fuels, traffic, and other activities that cause air pollution. The trends also reflect changes in emissions as a result of air pollution regulations and emission controls. These annual reports will serve as a measure of our nation's progress in reducing air pollution emissions as a result of mandatory and voluntary controls and of continuous changes in national activity.

National Air Pollutant Emission Trends: 1900-1998 Report (PDF 4.5M)

For the latest trends information, visit the Air Pollutant Emission Trends Web Site.

Hard copies of the Trends report are available from the National Technical Information Service (NTIS) in Springfield, Virginia. The document order number is PB2000-108054. The phone number is (800)553-6847. The NTIS web address is http://www.ntis.gov/

Explanation of File Formats

| Office of Air Quality Planning & Standards | Technology Transfer Network |
| Clearinghouse for Inventories & Emissions Factors |

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