1) Evaluation of the effect of a project upon the environment. (Source: GEMET/PHC) 2) A national procedure for evaluating the likely impact of a proposed activity on the environment. (Source: Art. 1 Espoo Convention)

Environmental impact assessment, as a national instrument, shall be undertaken for proposed activities that are likely to have a significant adverse impact on the environment and are subject to a decision of a competent natonal authority (Source: InforMEA based on Rio Principle17)