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Layer: Runways (ID: 6)

Parent Layer: Airports

Name: Runways

Display Field: FULLNAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This geospatial dataset contains air toxic emissions estimates (tons per year) for the 2014 National Air Toxics Assessment (NATA) for airports where the modeled sources are runway line sources. We modeled airports as one of two types: runway line sources or small (10-by-10-meter) area sources. The runway airports are those for which we have geographic coordinates for the runway endpoints from either the 2014 National Transportation Atlas Database or from a dataset developed by EPA's Office of Transportation and Air Quality for the 2011 NATA. The emissions are from the 2014 National Emissions Inventory (NEI).The nonrunway airports have no runway information and were modeled as small area sources. These include smaller airports, seaplanes and heliports. Although there may be multiple processes at an airport (e.g., commercial aircraft emissions and ground support equipment emissions), we did not treat them differently with respect to source characterization. Emissions at an airport were summed and apportioned equally among the runways or to the small area source. More detailed information can be found at https://www.epa.gov/national-air-toxics-assessment.

Definition Expression: N/A

Copyright Text:

Default Visibility: false

MaxRecordCount: 5000

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 9000000

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
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HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
Supported Operations:   Query   Generate Renderer   Return Updates