PM-2.5 환경영향평가 방안 연구 = Environmental Impact Assessment Methodology of PM-2.5

다국어 초록 (Multilingual Abstract)

Since the revision of the Enforcement Decree of the Framework Act on Environmental Policy on March 2010, the new National Ambient Air Quality Standards (NAAQS) for PM-2.5 (50fLg/m3 per day, 25fLg/m3 per year) was established and due for implementation to the environmental administration from 2015. Under these circumstances, it has become necessary to develop evaluation methods for PM-2.5 in order to properly assess its environmental impact. Currently, reduction measures are being established on the grounds of the impact caused by PM-10 during construction and operation of past EIA target projects. There are no significant differences in assessment methodology between PM-2.5 and PM-l0 except chemical reaction in the air. Because the chemical reaction mechanism of PM-2.5 has not been identified completely, the evaluation methods for PM-2.5 emission are the focus of discussion. Three main methods are discussed in this report to evaluate PM-2.5 impact. First, the emission amount ratio of PM-2.5 to PM-10 (PM-2.5/PM-10) in South Korea can be used. Second, the emission factors used in the United States as well as in other countries are utilized. Third, the concentration ratio of PM-2.5 to PM-l0 (0.6) is used in case the above two methods are found to be not applicable. The suggested methods can be applied in both constructional and operational phases of the project. In addition, it is desirable to evaluate PM-2.5 effects from EIA projects resulting in air pollution, such as development of industrial complexes, and construction of power plants and waste treatment facilities, instead of every EIA target project. Furthermore, successive research assignments on national and EIA level are suggested. These assignments are expected to be utilized for environmental impact assessment, which plays a role in national air quality management policy.