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AP-42 Guide
EPA's AP-42 is the recommended source of air pollutant emission factors for both criteria and toxic emissions. While this is by no means a comprehensive list, the following table provides the DAQ forms and applicable AP-42 chapters for a variety of commonly used processes and equipment.
AP 42 Chapter List
Form |
Subject |
AP-42 Chapter |
|---|---|---|
3 |
External Coal Combustion | 1.1 & 1.2 |
3 |
External Fuel Oil (Diesel) Combustion | 1.3 |
3 |
External Natural Gas Combustion | 1.4 |
3 or 15 |
Internal Gas Turbines | 3.1 |
3 or 15 |
Internal Natural Gas Engines | 3.2 |
3 or 15 |
Internal Gasoline and Diesel Engines | 3.3 |
3 or 15 |
Internal Large Diesel & Dual-Fuel Engines | 3.4 |
17 or 20 |
Petroleum Industry (Refineries, etc.) | 5.1 - 5.3 |
18 or 19 |
Organic Liquid Storage Tanks (reference) | 7.1 |
9 or 10 |
Asphalt Plant (Hot, Batch, Drum) | 11.1 |
6, 7, 11a, 11b |
Dozing, Drilling, Blasting | 11.9 |
8 |
Concrete Batching | 11.12 |
7 |
Crushed Stone Processing (sand & gravel) | 11.19 |
11a |
Roads - paved & unpaved | 13.2.1 & 13.2.2 |
11b |
Storage Piles & Aggregate Handling | 13.2.4 |
20a |
Wet Cooling Towers | 13.4 |
2, 6a, 20a |
Industrial Flares | 13.5 |
