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|Air Quality
Air Contaminant Discharge Permits (ACDP)
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Emission factors (series EF)
The emission factors on this webpage are provided to assist with the development of both ACDP and Title V permit applications. Please read the instructions before using the emission factors because although DEQ has provided these factors, it may be more appropriate to use other information.
| Source Description | Emission Factors (PDF) |
| Feed, seed, grain | AQ-EF01 |
| Wood products | AQ-EF02 |
| Wood products PM10/PM2.5fraction | AQ-EF03 |
| Oil fired boilers | AQ-EF04 |
| Gas fired boilers | AQ-EF05 |
| Asphalt and Aggregate industries | AQ-EF06 |
| Electric power generators | AQ-EF07 |
| PM2.5 fractions of PM10 - miscellaneous processes | AQ-EF08 |
For questions about air quality regulations or permits, see our Contacts page.
For more information about Air Quality call 503-229-5359 or email.
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