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Older Editions of AP 42, Compilation of Air Pollutant Emission Factors
The AP 42, Compilation of Air Pollutant Emission Factors, was first published by the US Public Health Service in 1968. The first through fourth editions, including supplements, are available below. In September 1985, the fourth edition was split into two volumes. Volume I includes stationary point and area source emission factors, and Volume II includes mobile source emission factors. Volume II is available on the the EPA's Office of Transportation & Air Quality web site.
This information is available for historical purposes only. For the most recent emission factors, supported by the EPA, please go to the current AP 42 web site.
The files are scanned images and have been converted to Acrobat PDF.
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
| First editions | |
| Compilation of Air Pollutant Emission Factors,
1968 Environmental Health Series, US Public Health Service |
(PDF 2M) |
| Compilation of Air Pollutant Emission Factors,
1971 Preliminary Document, US EPA |
(PDF 8M) |
| Compilation of Air Pollutant Emission Factors,
1972 Revised, US EPA |
(PDF 8M) |
| Second edition | |
| Compilation of Air Pollutant Emission Factors - Second
edition, 1973 AP 42, US EPA |
(PDF 11M) |
| Compilation of Air Pollutant Emission Factors - Second
edition, supplement 1, July 1973 AP 42, US EPA |
(PDF 1.3M) |
| Compilation of Air Pollutant Emission Factors - Second
edition, supplement 2, September 1973 AP 42, US EPA |
(PDF 850K) |
| Compilation of Air Pollutant Emission Factors - Second
edition, supplement 3, May 1974 AP 42, US EPA |
(PDF 3M) |
|
Compilation of Air Pollutant Emission Factors - Second edition,
supplement 4, January 1975 |
(PDF 3.5M) |
| Compilation of Air Pollutant Emission Factors - Second
edition with supplements 1-4, 1975 AP 42, US EPA |
(PDF 17M) |
| Compilation of Air Pollutant Emission Factors - Second
edition, supplement 5, December 1975 AP 42, US EPA |
(PDF 8.5M) |
| Compilation of Air Pollutant Emission Factors - Second
edition, supplement 6, April 1976 AP 42, US EPA |
(PDF 3M) |
| Compilation of Air Pollutant Emission Factors - Second
edition, supplement 7, April 1977 AP 42, US EPA |
(PDF 5.7M) |
| Third edition | |
| Compilation of Air Pollutant Emission Factors - Third
edition including supplements 1- 7 from second edition, 1977 AP 42, US EPA |
(PDF 26M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 8, 1978 AP 42, US EPA |
(PDF 6M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 9, 1979 AP 42, US EPA |
(PDF 5M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 10, February 1980 AP 42, US EPA |
(PDF 7M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 11, October 1980 AP 42, US EPA |
(PDF 4.5M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 12, 1981 AP 42, US EPA |
(PDF 5M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 13, 1982 AP 42, US EPA |
(PDF 4M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 14, 1983 AP 42, US EPA |
(PDF 8M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, supplement 15, 1984 AP 42, US EPA |
(PDF 3M) |
| Compilation of Air Pollutant Emission Factors - Third
edition, Update package, 1985 AP 42, US EPA |
(PDF 5M) |
| Fourth edition, Volume I: Stationary Point and Area Sources | |
| Compilation of Air Pollutant Emission Factors, -
Fourth Edition, 1985 AP 42, US EPA |
(PDF 27M) |
| Compilation of Air Pollutant Emission Factors - Fourth Edition, supplement A, 1986 AP 42, US EPA |
(PDF 13M) |
| Compilation of Air Pollutant Emission Factors - Fourth
Edition, supplement B, 1988 AP 42, US EPA |
(PDF 6M) |
| Compilation of Air Pollutant Emission Factors - Fourth
Edition, supplement C, 1990 AP 42, US EPA |
(PDF 5M) |
| Compilation of Air Pollutant Emission Factors - Fourth
Edition, supplement D, 1991 AP 42, US EPA |
(PDF 5M) |
| Compilation of Air Pollutant Emission Factors - Fourth
Edition, supplement E, 1992 AP 42, US EPA |
(PDF 8M) |
| Compilation of Air Pollutant Emission Factors - Fourth
Edition, supplement F, 1993 AP 42, US EPA |
(PDF 22M) |
| Compilation of Air Pollutant Emission Factors - Fourth
Edition, with supplements A through F incorporated, (1985 to 1993) AP 42, US EPA |
(PDF 58M) |
| Fifth edition, Volume I: Stationary Point and Area
Sources *Most sections in the 5th edition have been updated. The most recent supplements are available on the the AP42 webpage. |
|
| Compilation of Air Pollutant Emission Factors, -
Fifth Edition, 1995 AP 42, US EPA |
(PDF 94M) |