Integrated Sustainability Appraisal (ISA) and Habitats Regulation Assessment (HRA)

What is an Integrated Sustainability Appraisal (ISA)?

Whilst it is important that the Surrey Transport Plan delivers its vision for transport in Surrey, it is also important that this is done in a way which protects the environment, protects the health and quality of life of the people of Surrey and visitors to the County and allows as many different people as possible the same opportunities for accessing the facilities and services they require whilst promoting sustainable economic growth.

More information on the sustainability impacts of the Transport Plan and how these will be considered as the Plan is implemented are available on our Protecting the environment in our policies page.

Consequently, and in line with statutory requirements, the draft Plan has been subjected to a series of assessments that cover the topics of Sustainability and Strategic Environmental Assessment (SA/SEA), Health Impact Assessment (HIA), Equality Impact Assessment (EqIA) and Community Safety Assessment (CSA).

Taken together these various assessments are described as an 'Integrated Sustainability Appraisal' (ISA). The ISA Report identifies the likely sustainability effects of implementing the Local Transport Plan and reports on the process of developing the Local Transport Plan from a sustainability perspective.

If you would like to receive a copy of the ISA report, please email

What is a Habitats Regulation Assessment (HRA)?

As there is a potential that the Transport Plan could lead to a direct or indirect effect on sites which have been designated at the European level for nature conservation purposes (such as Special Areas of Conservation), a Habitats Regulation Assessment (HRA) has also been carried out and is reported on separately.

If you would like to receive a copy of the HRA report, please email

Implementing the Local Transport Plan

Implementing the LTP4 Policy Areas will require maintenance and operation of the existing transport network and may require construction or enhancement of infrastructure. These developments have the potential to impact the environment and local communities and visitors to the affected area. We will ensure that throughout our design and implementation process we understand and take account of the potential impacts and, wherever possible, specify designs to avoid or mitigate them, or enhance them where appropriate.

To understand more about how we will do this and view our policies for sustainability, please visit our Protecting the environment in our policies page.

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