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
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Current Methods Used to Estimate Emissions (PDF)(409 pp, 2 MB)
Procedures Document for National Emission Inventory Criteria Air Pollutants, 1985-1999
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Methods Used to Estimate Emissions (PDF)(713 pp, 2 MB)
National Air Pollutant Emissions Trends, Proedures Document, 1900-1984