Abstract
Environmental impact assessment is widely and popularly implemented based on the guideline of national government and by laws. However, its underlying conceptions of environmental impact assessment is not clarified entirely. This study aims to analyze some underlying conceptions of environmental impact assessment and its changes in order to contribute to improvement of the study on the constitution and technical methods of environmental impact assessment. As a result of this study, it becomes clear that there are some different underlying conceptions of environmental impact assessment.
