GAO-10-748SP: Aviation and the Environment: Survey of Airport Officials on Airport Environmental Issues, an E-supplement to GAO-10-50

U.S. Government Accountability Office

Q7. Is your airport required to use any of these metrics?
(Total Population)

Yes
(percent)		 No
(percent)		 No answer
(percent)		 Number
of respondents
37.0 57.4 5.6 54

Q7. Is your airport required to use any of these metrics?
(Large and Medium Hubs)

Yes
(percent)		 No
(percent)		 No answer
(percent)		 Number
of respondents
34.4 56.3 9.4 32