Environmental Impact Assessment


What is Environmental Impact Assessment?

Environmental Impact Assessment (EIA) is the process of examining the anticipated environmental effects of a proposed project - from consideration of environmental effects at design stage, through consultation and preparation of an Environmental Impact Assessment Report (EIAR), evaluation of the EIAR by a competent authority and the subsequent decision as to whether the project should be permitted to proceed.

What is an Environmental Impact Assessment Report?

An Environmental Impact Assessment Report (EIAR) is a report of the effects, if any, which the proposed project, if carried out, would have on the environment.  It is prepared by the developer to inform the EIA process.

What projects require EIA?

The projects which require EIA are listed in Annex I and Annex II of the EIA Directive.

Projects listed in Annex I of the EIA Directive have mandatory EIA requirements.  Each Member State decides on a case-by-case basis whether Annex II projects require an EIA.  Thresholds have been set for Annex II projects in Irish legislation.  Projects which do not meet the threshold may still require an EIA if the project is likely to have significant effects on the environment (sub-threshold projects).

The Annex I and Annex II projects have been transposed into Section 5 (Parts 1 and 2) of the Planning and Development Regulations 2001, as amended.

Environmental Impact Assessment Directive (EIA Directive) means Directive 2014/52/EU of the European Parliament and of the Council of 16 April 2014 amending Directive 2011/92/EU on the assessment of the effects of certain public and private projects on the environment.

The Environmental Protection Agency and EIA

1. Licensing Role

The EPA is a competent authority for EIA.  For Integrated Pollution Control (IPC), Industrial Emissions (IE) and Waste licence applications, where the activity is also a project which requires EIA, the Agency must conduct an assessment of the application for the purposes of EIA as respects the matters that come within the functions of the Agency.   For waste discharge licence applications where there is a likelihood of significant effects on the environment arising from the proposed development, the Agency must conduct an assessment of the application for the purposes of EIA.

Regulations published in 2020 transpose the requirements of the EIA Directive for IPC, IE, and waste licensing and waste water authorisation. The Regulations are available here and on www.irishstatuebook.ie 

The EPA's role in EIA for sites that require an IPC, IE, waste or wastewater discharge authorisation is linked to that of the Planning Authority/An Bord Pleanala. Provisions for consultation between the EPA and the Planning Authority/ An Bord Pleanala are set out in legislation.

2. Consultation Role

The EPA is a statutory consultee to An Bord Pleanala and other consent authorities. The provisions for consultation are set out in legislation. The types of consultations include applications for strategic infrastructure developments, state developments, electricity and gas infrastructure and consultation on the scope and level of detail to be contained in an EIAR. The email address for this type of correspondence to the Agency is: EIAPlanning@epa.ie  


Guidelines on the information to be contained in an EIAR

Section 72 of the EPA Act 1992, as amended, provides for the preparation by the Agency of 'guidelines on the information to be contained in environmental impact assessment reports'. The Guidelines on the information to be contained in Environmental Impact Assessment Reports dated May 2022 are available here.