On July 30, 2007, the FAA published its final Federal Presumed to Conform Actions Under General Conformity list in the Federal Register. The Presumed to Conform list identifies certain federal actions on or relating to airports that do not require detailed General Conformity analyses under the Clean Air Act. General Conformity analyses are typically required for FAA actions (such as Airport Layout Plan or PFC approvals) that affect cities or regions that are not in compliance with federal air quality standards. Among the activities identified in the Presumed to Conform list are: pavement markings, non-runway pavement work, terminal upgrades, heating and cooling projects, airport security projects, and alternative fuel vehicle projects.