The AIOD is administered by Loudoun County. The boundaries are based on the Loudness Day Night (LDN) noise contours that were updated by the Metropolitan Area Airports Authority (MWAA) in 2019, as wel

Los Angeles County Public Safety Open Data2025-01-09 更新10

Airport Impact Overlay District

The AIOD is administered by Loudoun County. The boundaries are based on the Loudness Day Night (LDN) noise contours that were updated by the Metropolitan Area Airports Authority (MWAA) in 2019, as wel

Los Angeles County Open Data Portal2025-01-09 更新00

Loudoun Airport Impact Overlay Districts

The Airport Impact Overlay District (AIOD) is established to acknowledge the unique land impacts of airports, regulate the siting of noise sensitive uses, ensure that the heights of structures are com

Loudoun County Transportation GIS Open Data2023-08-30 更新10