- Thumbnail
- Resource ID
- cc7f227b-661c-4599-b73a-e08d79cdea0f
- Title
- SSSI NH3 Critical Levels
- Date
- Aug. 3, 2022, midnight, Publication Date
- Abstract
- This layer provides a Critical Level (CLe) for ammonia against which impacts on a SSSI should be assessed. The value is the lowest CLe for a feature on that site. The layer gives the SSSI name, SSSI code and ammonia Critical Level. The ammonia CLe can be: 1: a 1µg/m3 NH3 Critical Level indicates a SSSI has N-sensitive bryophytes/lichens as a feature or has bryophytes/lichens as key components of a habitat feature of that SSSI; 3: a 3µg/m3 NH3 Critical Level indicates a SSSI has N-sensitive vegetation, or has invertebrate features that are dependent on N-sensitive vegetation; NS: all features on a site are considered not to be particularly sensitive to ammonia; this does not mean that other aspects of a development will not have negative impacts on a SSSI, for example through water pollution or disturbance. Attribution statement Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.
- Edition
- --
- Responsible
- Andrew.Thomas.Jeffery
- Point of Contact
- Jeffery
- andrew.jeffery@cyfoethnaturiolcymru.gov.uk
- Purpose
- --
- Maintenance Frequency
- None
- Type
- not filled
- Restrictions
- None
- License
- Open Government Licence for Public Sector Information
- Language
- en
- Temporal Extent
- Start
- --
- End
- --
- Supplemental Information
- Data Quality
- --
- Extent
-
- x0: 146598.546875
- x1: 355308.90625
- y0: 164494.21875
- y1: 395333.71875
- Spatial Reference System Identifier
- EPSG:27700
- Keywords
- no keywords
- Category
- Environment
- Regions
-
Global