An official website of the United States government.

Air Emissions Inventories

Trends Procedural Documentation

Current Methods Used to Estimate Emissions, 1985-1999  - Procedures Document for National Emission Inventory, Criteria Air Pollutants 1985-1999, March 2001, EPA-454/R-01-006. Hard copies of the report are available from NTIS. The order number is PB#2001-106825. The NTIS phone number is (800)553-6847.

Methods Used to Estimate Emissions, 1900-1984 - National Air Pollutant Emission Trends Document, Procedures Report, 1900-1996 (May 1998), EPA-454/R-98-008

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.