Parent Layer: BGS Layers

Name: Radon

Display Field: VERSION

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The Radon data: radon potential dataset is the definitive map of Radon Affected Areas in Great Britain and Northern Ireland, created jointly by Public Health England* (PHE) and the BGS using long-term radon measurements made in over 479 000 homes across Great Britain and 23,000 homes across Northern Ireland (without affecting householders' confidentiality), combined with geological map data.The dataset includes a built in 75 m 'buffer', made up of 50 m to allow for the margin of error in the geological lines, and 25 m to represent the average extent of a home.PHE recommends that radon levels should be reduced in homes where the annual average is at or above 200 becquerels per cubic metre (200 Bq m-3) — this is termed the Radon Action Level.PHE defines Radon Affected Areas as those with one per cent chance or more of a house having a radon concentration at or above the Action Level of 200 Bq m-3.The radon potential dataset answers the following questions:Is a property in a Radon Affected Area?What level of Radon Protective Measures do I need to install if I am building a new building or an extension to an existing building?

Definition Expression: N/A

Copyright Text: BGS (British Geological Society) & PHE (Public Health England)

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: false

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 417924.9900000002
YMin: 468399.9900000002
XMax: 464659.7999999998
YMax: 512518.5050000008
Spatial Reference: 27700  (27700)

Drawing Info:

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Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false

HasZ: true

HasM: true

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID , alias: OBJECTID )
• VERSION ( type: esriFieldTypeString , alias: VERSION , length: 20 )
• SHAPE ( type: esriFieldTypeGeometry , alias: Shape )
• SHAPE.STArea() ( type: esriFieldTypeDouble , alias: SHAPE.STArea() )
• SHAPE.STLength() ( type: esriFieldTypeDouble , alias: SHAPE.STLength() )

Supported Operations:   Query   Generate Renderer   Return Updates

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