Related Links

FAA National Environmental Policy Act (NEPA) guidance documents:

FAA Order 5050.4B, National Environmental Policty Act (NEPA) Implementing Instructions for Airport Actions

http://www.faa.gov/airports_airtraffic/airports/resources/publications/orders/environmental_5050_4/

FAA Order 1050.1E, Environmental Impacts: Policies and Procedures

http://www.faa.gov/regulations_policies/orders_notices/media/10501ECHG.pdf