Emissions Factors & AP 42, Compilation of Air Pollutant Emission Factors

The EPA's publication about air emissions from over 200 air pollution source categories. A source category is a specific industry sector or group of similar emitting sources. The emission factors have been developed and compiled from source test data, material balance studies, and engineering estimates.

Related Topics:
5. Energy decisions are influenced by economic, political, environmental, and social factors.
6. The amount of energy used by human society depends on many factors.

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Related Sub-Topics

6.4 Earth has limited energy resources.

6.1 Conservation of energy has two very different meanings.

5.6 Energy decisions are influenced by environmental factors.