Loudoun Airport Impact Overlay Districts

More MetadataThe Airport Impact (AI) Overlay District is a zoning overlay district administered by the Loudoun County Department of Building and Development. The Department is responsible for all development approvals, review procedures, modifications and density calculations in the AI as governed by Article IV, Division C: "Environmental Impact Districts", Section 4-1400 of the Revised 1993 Zoning Ordinance.

The Airport Impact (AI) Overlay District boundaries shall be based on the 60dB and 65dB Loudness Day Night (LDN) noise contours and a one-mile buffer that extends beyond the 60dB LDN contour for Washington-Dulles International Airport and the Leesburg Municipal Airport (Godfrey Field). The Board of Supervisors for Loudoun County, Virginia shall use as a basis for delineating the LDN noise contours the following sources:

(1) Washington Dulles International Airport: The FAA PART 150 Noise Compatibility Programs, Washington Dulles International Airport, August, 1992, and

(2) Leesburg Municipal Airport: Environmental Assessment Report. October, 1985.

Data and Resources

Field	Value
accessLevel	public
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catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier	https://geohub-loudoungis.opendata.arcgis.com/maps/LoudounGIS::loudoun-airport-impact-overlay-districts
issued	2017-06-14T22:28:59.000Z
landingPage	https://geohub-loudoungis.opendata.arcgis.com/maps/LoudounGIS::loudoun-airport-impact-overlay-districts
license	https://logis.loudoun.gov/loudoun/disclaimer.html
metadata_type	geospatial
modified	2020-11-24T15:38:38.000Z
old-spatial	-77.6054,38.8222,-77.4072,39.1086
publisher	Loudoun GIS
resource-type	Dataset
source_datajson_identifier	true
source_hash	a55e8d943b34e5db8468277408496adfefc36eb2
source_schema_version	1.1
spatial	{"type": "Polygon", "coordinates": [[[-77.6054, 38.8222], [-77.6054, 39.1086], [-77.4072, 39.1086], [-77.4072, 38.8222], [-77.6054, 38.8222]]]}
theme	{geospatial}
Groups	AmeriGEOSS National Provider North America
Tags	ai airport airport-impact amerigeo amerigeoss ckan geo geoss ldn loudoun loudoun-county national noise-contours north-america open-data overlay overlay-district planning united-states
isopen	False
license_id	other-license-specified
license_title	other-license-specified
maintainer	LoudounCounty
maintainer_email	mapping@loudoun.gov
metadata_created	2025-11-20T06:49:55.712653
metadata_modified	2025-11-20T06:49:55.712657
notes	<p style='margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:30.25pt;margin-bottom:.0001pt;line-height:normal;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt; background:white'><a href='https://logis.loudoun.gov/metadata/Airport%20impact%20overlay.html' target='_blank'>More Metadata</a><br /></p><p style='margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:30.25pt;margin-bottom:.0001pt;line-height:normal;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt; background:white'><br /></p><p style='margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:30.25pt;margin-bottom:.0001pt;line-height:normal;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt; background:white'>The Airport Impact (AI) Overlay District is a zoning overlay district administered by the Loudoun County Department of Building and Development. The Department is responsible for all development approvals, review procedures, modifications and density calculations in the AI as governed by Article IV, Division C: "Environmental Impact Districts", Section 4-1400 of the Revised 1993 Zoning Ordinance.</p> <p style='margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:30.25pt;margin-bottom:.0001pt;line-height:normal;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt; background:white'> </p> <p style='margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:30.25pt;margin-bottom:.0001pt;line-height:normal;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt; background:white'>The Airport Impact (AI) Overlay District boundaries shall be based on the 60dB and 65dB Loudness Day Night (LDN) noise contours and a one-mile buffer that extends beyond the 60dB LDN contour for Washington-Dulles International Airport and the Leesburg Municipal Airport (Godfrey Field). The Board of Supervisors for Loudoun County, Virginia shall use as a basis for delineating the LDN noise contours the following sources:</p> <p style='margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:30.25pt;margin-bottom:.0001pt;line-height:normal;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt; background:white'>(1) Washington Dulles International Airport: The FAA PART 150 Noise Compatibility Programs, Washington Dulles International Airport, August, 1992, and</p> <p style='margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:30.25pt;margin-bottom:.0001pt;line-height:normal;tab-stops:45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt; background:white'>(2) Leesburg Municipal Airport: Environmental Assessment Report. October, 1985.</p>
num_resources	6
num_tags	19
title	Loudoun Airport Impact Overlay Districts