Organic Gas Speciation Profile for Aircraft

EPA's Office of Transportation Air Quality (OTAQ) and the Federal Aviation Administration's (FAA) Office of Environment and Energy (AEE) provided an organic gas speciation profile for use in emission inventories of aircraft equipped with turbofan, turbojet, and turboprop engines fueled with kerosene-based, jet-A fuel. The development of this profile was the combined work of both agencies, taking into account the most recent data sets available at the time.  EPA and FAA agreed to continue further development of the speciated organic gas profile as new scientific information becomes available.  Because this effort is a "living" methodology, air quality practitioners should verify that they have the most recent version of the documents (by date and version number on the cover) and associated speciated profile before preparing an emissions inventory.

• Recommended Best Practice for Quantifying Speciated Organic Gas Emissions from Aircraft Equipped with Turbofan, Turbojet, and Turboprop Engines (PDF)(26 pp, 626 K, EPA-420-R-09-901, May 2009)
  This document will assist aviation air quality practitioners in preparing an emissions inventory of organic gases (OGs) emitted by aircraft equipped with turbofan, turbojet, and turboprop engines.
• Aircraft Engine Speciated Organic Gases: Speciation of Unburned Organic Gases in Aircraft Exhaust (PDF)(27 pp, 613 K, EPA-420-R-09-902, May 2009)
  This document will assist aviation air quality practitioners in preparing an emissions inventory of organic gases (OGs) emitted by aircraft equipped with turbofan, turbojet, and turboprop engines. 
• Aircraft Engine Speciated Hydrocarbons (Turbofan, Turbojet, and Turboprop Engines) (xls) (928 KB, May 2009, EPA-420-R-09-903)   Free Viewers
  This spreadsheet provides the technical data, algorithms, and computations used to derive the speciated OG profile.
• Quality Assurance Project Plan for the Development of a Commercial Aircraft Hazardous Air Pollutants Emission Inventory Methodology (PDF) (21 pp, 287K, EPA-420-R-09-904, May 2009)
  This document outlines the procedures and datasets used to develop the data and methodology provided/discussed in the Recommended Best Practice (RBP).