Technical Information and References
Emission Factors

USEPA AP-42

• What is an AP-42 emission factor? - from AP-42 5th Edition
• AP-42 Webpage - link to EPA
• EPA WebFIRE

Santa Barbara County APCD

• ROC/VOC Emission Factors and Reactivities for Common Source Types
• Sulfur Mass Balance Emission Factors
  • Gaseous Fired Fuels, Adobe PDF, MS Word 6.0
  • Liquid Fired Fuels, Adobe PDF, MS Word 6.0
• Construction Equipment Emission Factors, Adobe PDF, MS Word 6.0

Other Emission Factor Documents

• Final document on the "Preferred and Alternative Methods for Estimating Air Emissions from Boilers" (Volume II Chapter 2).
  http://www.epa.gov/ttn/chief/eiip/techreport/volume02/ii02.pdf
• Final document on the "Preferred and Alternative Methods for Estimating Air Emissions from Hot Mix Asphalt Plants" (Volume II Chapter 3).
  http://www.epa.gov/ttn/chief/eiip/techreport/volume02/ii03.pdf
  
• Final document on the "Preferred and Alternative Methods for Estimating Air Emissions from Wastewater Collection and Treatment" (Volume II Chapter 5)
  http://www.epa.gov/ttn/chief/eiip/techreport/volume02/ii05.pdf
  
• Final document on the "Preferred and Alternative Methods for Estimating Air Emissions from Semiconductors" (Volume II Chapter 6)
  http://www.epa.gov/ttn/chief/eiip/techreport/volume02/ii06.pdf
  
• Final document on the "Preferred and Alternative Methods for Estimating Air Emissions from Surface Coating Operations" (Volume II Chapter 11)
  http://www.epa.gov/ttn/chief/eiip/techreport/volume02/ii11.pdf

For more information or assistance, call the Engineering Division at (805) 961-8800, or e-mail us at engr@sbcapcd.org.

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