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A Study on Improvement of Air Quality Dispersion Model Application Method in Environmental Impact Assessment (II) – Focusing on AERMOD Model Application Method –

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2023, 32(4), pp.203-213
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering
  • Received : July 21, 2023
  • Accepted : July 25, 2023
  • Published : August 31, 2023

Suhyang Kim 1 Sun-Hwan Park 2 Hyun-Soo Joo 3 Minseop So 4 Naehyun Lee 5

1주식회사 선일이앤씨
2(주)선일이엔씨
3한국환경연구원
4광운대학교 환경공학과
5재단법인 한국교육환경보호원

Accredited

ABSTRACT

The AERMOD model was the most used, accounting for 89.0%, based on the analysis of the environmental impact assessment reports published in the Environmental Impact Assessment Information Support System (EIASS) between 2021 and 2022. The mismatch of versions between AERMET and AERMOD was found to be 25.3%. There was the operational time discrepancy of 50.6% from industrial complexes, urban development projects between used in the model and applied in estimating pollutant emissions. The results of applying various versions of the AERMET and AERMOD models to both area sources and point sources in both simple and complex terrain in the Gunsan area showed similar values after AERMOD version 12 (15181). Emissions are assessed as 24-hour operation, and the predicted concentration in both simple and complex terrain when using the variable emission coefficient option that applies an 8-hour daytime operation in the model is lowered by 37.42% ~ 74.27% for area sources and by 32.06% ~ 54.45% for point sources. Therefore, to prevent the error in using the variable emission coefficient, it is required to clearly present the emission calculation process and provide a detailed explanation of the composition of modeling input data in the environmental impact assessment reports. Also, thorough reviews by special institutions are essential.

Citation status

* References for papers published after 2022 are currently being built.