APPENDIX F$_{ }$ 105$_{ }$ Analysis  Type  Source  Type  Parameter  Data Source  Description  https://aspm.faa.gov/aspm/entryASPM.asp?lite=y.  Bureau of  Transportation  Statistics  (BTS)  Provides aircraft statistics, including taxi in and taxi-out data for specific  airlines at 287 airports. Annual data available beginning with the year  1995. This information can be accessed at the following website:  http://apps.bts.gov/xml/ontimesummarystatistics/src/dstat/OntimeSumma  ryDepatures.xml.  Stationary  Operational  Data  Operating Permits  (Title V operating  permits)  Legally enforceable documents that permitting authorities (i.e., federal,  regional, state and/or local air agencies) issue to major stationary air  pollution sources after the source has begun to operate. Under Title V of  the Clean Air Act (CAA), any source that emits or has the potential to  emit 100 tons per year or more of any criteria air pollutant is a  major  source  and must obtain a Title V operating permit. This information may  be limited as not all stationary sources at airports fall under this category.  Emission  Factors  Emissions &  Generation Resource  Integrated Database  (eGRID)  This is a comprehensive source of data on the environmental  characteristics of almost all electric power generated in the U.S., which  emissions rates; net generation; resource mix; and many other attributes.  This information can be accessed at the following website:  http://www.epa.gov/cleanenergy/energy-resources/egrid/index.html  AP-42  Emission factors are available from the EPA document  Compilation of  Air Pollution Emissions Factors (i.e., AP-42) , that can be accessed at the  following website: http://www.epa.gov/ttnchie1/ap42/.  Energy Information  Administration  (EIA)  Greenhouse gas (GHG) emission factors and global warming potentials  (GWPs) are available from the  Voluntary Reporting of Greenhouse  Gases Program . This information can be accessed at the following  website:  http://www.eia.gov/survey/form/eia_1605/emission_factors.html.  EDMS/AEDT  Includes default data for emission factors for stationary sources 