PRELIMINARY ECOLOGICAL APPRAISAL (PEA)
(Extended Phase 1 Habitat Survey)
The key objectives of the PEA are to:
- Identify the likely ecological constraints associated with a project
- identify any mitigation measures likely to be required following the ‘Mitigation Hierarchy’
- identify any additional surveys that may be required to inform an Ecological Impact Assessment (EcIA)
- identify the opportunities offered by a project to deliver ecological enhancement (CIEEM 2017 2nd edition)
The Phase 1 habitat classification and associated field survey technique provides a relatively rapid system to record semi-natural vegetation and other wildlife habitats. Each habitat type/feature is defined by way of a brief description and is allocated a specific name, an alpha-numeric code, and unique mapping colour. The system has been widely used and continues to act as the standard ‘phase 1’ technique for habitat survey across the UK.
A desk study is often carried out in conjunction with the PEA to collect all existing ecological data about the site.
These surveys provide information on:
- Which species are present, or potentially present on the site
- The potential impacts of the development on a particular species
- The legal and planning policy issues that may need to be addressed
From our initial phase 1 survey and assessment we can identify if further ecological surveys will be required to enable a smooth route through the planning process, if there are no constraints identified by the habitat risk assessment survey then it is likely that no further survey will be required.
Our ecologists at Tyrer Ecological Consultants have extensive experience in the standard Phase 1 survey methodology and have carried out numerous ecological risk assessment and ecological scoping surveys.