content_image/540784.jpg content_image/540801.jpg
Where: 

E = total emissions of pollutant from training fires, expressed in pounds. 

QF = quantity of fuel burned in training fire (thousands of gallons). 

<img src='content_image/540784.jpg'>

EF = emission factor of pollutant (i.e., CO, SO$_{2}$, PM$_{10}$, PM$_{2.5}$, NO$_{x}$, or VOC), expressed in pounds per thousand gallons of fuel burned. 

## A5.2.5.2 Emission Factors 

Table A5-2 ( Emission Factors for Uncontrolled Burning in Training Fires ) provides emission factors for each of the fuels commonly burned in ARFF training facilities. These emission factors are also the default values used within EDMS/AEDT. 

<img src='content_image/540801.jpg'>

Source: Emissions and Dispersion Modeling System (EDMS) User’s Manual, FAA-AEE-07-01 (Rev. 10 – 06/07/13), June 2013, 

http://www.faa.gov/about/office_org/headquarters_offices/apl/research/models/edms_model/media/EDMS_5.1.4_ User_Manual.pdf; and Jagielski, Kurt D., and Robert J. O'Brien, Calculation Methods for Criteria Air Pollutant Emission Inventories , July 1994. 

Notes: $^{1 }$Emission factors are expressed in pounds of pollutant per thousand gallons of fuel burned. 

## A5.2.6 Aircraft Engine Testing 

Aircraft engine testing is performed at some airports as part of regular aircraft maintenance cycles. In general, testing at commercial airports is limited to uninstalled engines in enclosed test cells. These tests are often performed following overhaul or repair of the engine to determine air worthiness, engine safety performance and fuel efficiency. During the test, the engine is mounted in a special enclosed cell that restricts noise but allows air to flow through at speeds simulating aircraft flight. Engine thrust and other essential performance parameters are measured as the engine is taken through a sequence of power settings. Aircraft engine testing is also performed for installed engines within hush houses. 

## A5.2.6.1 Methodology 

Pollutant emissions from aircraft engine testing are computed for each engine being tested at different operational modes. During testing, the engine is taken through a sequence of power levels simulating actual flight conditions. Knowledge of the test operating times and fuel flow 

