iii  B.2.1.2  Example of Aircraft HAP Emission Calculations ........................ 53 B.2.2  Auxiliary Power Units ...................................................................................56 B.2.2.1  Methodology ................................................................................. 56 B.2.2.2  Conversion Factors ....................................................................... 57 B.2.3  Ground Support Equipment  ..........................................................................57 B.2.3.1  Methodology ................................................................................. 57 B.2.3.2  Emission Factors ........................................................................... 57 B.2.4  Ground Access Vehicles ................................................................................58 B.2.4.1  Methodology ................................................................................. 58 B.2.4.2  Emission Factors ........................................................................... 59 B.2.5  Stationary Combustion Sources ....................................................................59 B.2.6  Fuel Storage Tanks  .......................................................................................59 B.2.7  Coating and Painting Operations .................................................................60 B.2.8  Deicing Activities  ..........................................................................................61 B.2.9  Solvent Degreasers  .......................................................................................61 APPENDIX C - Emissions Inventory for Greenhouse Gases ............................................ 62 C.1  Overview ................................................................................................................... 62 C.2  Methodology ............................................................................................................. 62 C.2.1  Aircraft ..........................................................................................................62 C.2.1.1  Aircraft within LTO Cycle............................................................ 63 C.2.1.2  Aircraft within Engine Startup Mode ........................................... 64 C.2.2  Auxiliary Power Units ...................................................................................65 C.2.3  Ground Support Equipment  ..........................................................................67 C.2.4  Ground Access Vehicles ................................................................................69 C.2.5  Stationary Sources  ........................................................................................70 C.2.6  Electrical Usage ............................................................................................71 C.2.7  Waste Management .......................................................................................72 C.2.8  Refrigerant Usage .........................................................................................72 APPENDIX D - Atmospheric Dispersion Modeling ........................................................... 74 D.1  Overview ................................................................................................................... 74 D.2  Dispersion Modeling Data ........................................................................................ 74 D.2.1  Model Identification and Options  .................................................................74 D.2.2  Emission Source Release Characteristics .....................................................75 D.2.3  Meteorological Data .....................................................................................76 D.2.3.1  Wind Speed and Direction ............................................................ 77 D.2.3.2  Mixing Height ............................................................................... 77 D.2.3.3  Surface Roughness Length, Albedo, Bowen Ratio....................... 78 D.2.4  Airport Capacity and Configurations  ...........................................................81 D.2.5  Spatial Allocation ..........................................................................................81 D.2.6  Temporal Profiles  .........................................................................................82 D.2.7  Topographical Data ......................................................................................82 D.2.8  Building Downwash D.2.9  Receptor Locations  .......................................................................................83 D.2.10 NO$_{x }$to NO$_{2 }$Conversion  ................................................................................84