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A Case Study on the Air Quality Impact Assessment for theLarge Scale Urban Development

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2007, 16(6), pp.381-391
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering

김상목 1 Youn-Seo Koo 2 이상훈 1 박근형 1 우재균 1 김성태 3 Jinseok Han 4

1㈜서영엔지니어링
2안양대학교
3㈜에니텍
4국립환경과학원

Accredited

ABSTRACT

The air quality modeling was carried out to assess the impact of air quality for large scaleurban development. The site for the assessment is Multi-fuctional Administrative City whichlocates in Yeongi-gun, Chungcheongnam-do and estimated population in 2030 is 500,000.Two automatic weather monitoring stations were installed to monitor the meteorologicalvariables for a year and upper air meteorological parameters were measured using radiosondefor 5 days with 4 hours interval in every season. The air quality of standard air pollutants werealso measured for 5 days continuously in every season.The results of wind field analysis based on the site measurements and CALMET modelingshowed that the valley and mountain winds were prevailed when the sypnotic wind was weak.It also showed that wind speed and directions were highly space-variable within the site basin.The variable wind characteristics implies that the Gaussian dispersion model such ISC3 andAERMOD are not appropriate and the unsteady-sate Lagrangian model such as CALPUFF ispreferable.CALPUFF model was applied to assess air quality impact of new sources. The new sourceswere those for individual and group heating facilities as well as the traffic increases. The resultsshowed that the estimated concentrations of CO and SO2 pollutants by summing the impactconcentration of new sources by the dispersion model and the ambient air concentrations by thesite measurements were acceptable but those of PM-10 and NO2 would violate ambient air quality standards at several locations due to high ambient air concentrations. It is recommended that the emission reductions near the site should be enforced to improve the ambient air quality.

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