E = QF x EF  Where:  E = total emissions of pollutant from training fires, expressed in pounds.  QF = quantity of fuel burned in training fire (thousands of gallons).  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.  Equation A5-7. Total Pollutant Emissions for Training Fires  A5.2.6  Aircraft Engine Testing  A5.2.6.1  Methodology  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.  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  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.  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.  A5.2.5.2  Emission Factors  APPENDIX A5$_{ }$ 29$_{ }$ Fuel  Emission Factors 1  CO  PM$_{10 }$ NO$_{x }$ SO$_{2 }$ VOC  JP-4  3,584  960  26.9  3.8  128  JP-5  124  96.6  2.6  14.9  198  JP-8  4,487  1,014  33.6  6.8  135  Propane  34.8  117  6.4  0.02  31.8  Tekflame  68.3  33.3  3.7  0.04  49.6  Table A5-2. Emission Factors for Uncontrolled Burning in Training Fires 