Environmental Impact Assessments (EIA) consider whether development projects either alone or in combination are likely to have significant effects on the environment.
The Planning and Development Regulations 2001, as amended, set out the mandatory thresholds for specified classes of development in which the preparation of an Environmental Impact Assessment applies. An EIA may need to be carried out even if the development is below the mandatory thresholds as set out in the regulations based on the potential impact on the environment.