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Preliminary ecological appraisal (PEA) and ecological impact assessment (EcIA)

Preliminary ecological appraisal (PEA)

A preliminary ecological appraisal (PEA) comprises a desk study and a site walkover to provide an overview of the ecological features and potential of a site and its surrounding area – its baseline ecological condition. Surveys typically comprise an extended phase 1 survey that takes into account protected and notable species , and a daytime inspection of any buildings and trees to assess their potential use by bats and nesting birds.

A PEA report is designed to inform the client/developer and their agents (e.g. architect or planning consultant) of the likely ecological effects of their proposals, any potential mitigation/compensation requirements, and whether further surveys are necessary.

It can be used as a stand-alone document in a planning application only where protected or priority habitats or species are unlikelyto be present, or are unlikely to be affected by the proposed project, and where further survey is unnecessary. In most instances the PEA report is used to inform an ecological impact assessment (EcIA) which is designed to meet planning authority requirements in support of planning applications.

Forward planning

Early involvement by a professional ecologist can avoid unnecessary delays at the planning application stage and later in the development. Download our ecological survey calendar for guidance. Note that survey windows can vary from region to region and year to year. Helix Ecology can advise on required surveys and appropriate timings specific to your site and project.

Ecological impact assessment (EcIA)

An ecological impact assessment (EcIA) identifies, quantifies and evaluates the potential effects of a proposed development or project on habitats, species and ecosystems. The level of detail required in an EcIA will be proportionate to the scale of the proposed development and the complexity of potential impacts.

An EcIA report can be submitted directly in support of a planning application, or can provide the ecological component of an environmental impact assessment (EIA).

Forward planning

Early involvement by a professional ecologist can avoid unnecessary delays at the planning application stage and later in the development. Download our ecological survey calendar for guidance. Note that survey windows can vary from region to region and year to year. Helix Ecology can advise on required surveys and appropriate timings specific to your site and project.

Preliminary ecological appraisal (PEA) and ecological impact assessment (EcIA)

Photo: Nigel Hester

Helix Ecology on Twitter

Have a stiff neck from counting 642 soprano pipistrelles out of one roost - 45 minutes of squabbling before they were all out! (The 100+ common pipistrelles using the other end of the building seem to have moved on.) Biggest pip roost I have personally encounted in Somerset.

- July 19, 2018

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T 01643 862 318  E mail@helixecology.co.uk