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Determination of First Flush Criteria in Highway Stormwater Runoff using Dynamic EMCs  

Kim, Lee-Hyung (Dept. of Civil & Environ. Engineering, Kongju National University)
Lee, Eun-Ju (Dept. of Civil & Environ. Engineering, Kongju National University)
Ko, Seok-Oh (Dept. of Civil & Environ. Engineering, Kyunghee University)
Kim, Sung-Gil (Dept. of Civil & Environ. Engineering, Kongju National University)
Lee, Byung-Sik (Dept. of Civil & Environ. Engineering, Kongju National University)
Lee, Joo-Kwang (Environ. & Material Res. Lab., Highway & Transportation Technology Institute)
Kang, Hee-Man (Environ. & Material Res. Lab., Highway & Transportation Technology Institute)
Publication Information
Journal of Korean Society on Water Environment / v.22, no.2, 2006 , pp. 294-299 More about this Journal
Abstract
The Ministry of Environment in Korea has introduced Total Pollution Load Management System (TPLMS) in major 4 large rivers to protect the water quality from possible pollutants. In order to successfully achieve the TPLMS, the nonpoint source should be controled by applying the best management practices in highly polluted areas. Of the various nonpoint sources, the highways are stormwater intensive landuses because of its high imperviousness and high pollutant mass emissions. The EMC (Event Mean Concentration) is an important parameter to correctly determine the pollutant mass loadings from nonpoint sources. However, it has wide ranges because of various reasons such as first flush phenomenon, rainfall and watershed characteristics. Even though the EMC is closely related to the first flush phenomenon, the relationship have not proven until present. Therefore, in this paper, the dynamic EMC method will be introduced to clearly make the relationship between EMC and first flush phenomenon. Also by applying the dynamic EMC method to monitored data, we found that the highly concentrated stormwater runoff was washed off within 20~50 minutes storm duration. The first flush criteria for economical treatment was also determined to 5~10 mm (mean=7.4 mm) as a cumulative rainfall.
Keywords
Dynamic event mean concentration; First flush criteria; Highways; Runoff;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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