NOTE:
The DOT Performance Plan (FY 2001) and Report (FY 1999) lists a preliminary estimate of 680,000 people exposed in 1999.
SOURCES:
Exposure: U.S. Department of Transportation, Federal Aviation Administration, Office of Environment and Energy, personal communications.
Population: U.S. Department of Commerce, Census Bureau, StatisticalAbstract of the United States 1999 (Washington, DC: 2000), table 2.