title: Non-point source analysis of a railway bridge area using statistical method: case study of a concrete road-bed.
abstract: In an effort to protect the quality of the water system, interest in non-point source pollution is increasing. Recently, studies of non-point sources pollution are continuing in relation to various land-use areas, but such studies have not been fully conducted in railway facility sites. Using monitoring data of railway bridge area with concrete road-bed, the runoff characteristics, pollutant unit loads, and first flush criteria were assessed. Railway bridge area with concrete road-bed typically show the first flush effect, and the pollutant unit load was determined to be higher than other public facilities areas. Further, the first flush criteria show an effective rainfall amount of 7 mm. In other words, from the runoff of railway facilities, considerable amounts of non-point source pollutants are occurred, indicating the need to create best management practices which are adequate for railway facility sites.
authors: Department of Civil Engineering, Seoul National University of Science and Technology, Nowon-gu, Seoul 139-743, Korea. Electronic address: kgil@seoultech.ac.kr.
authors: Kyungik
authors: K
authors: Gil
authors: School of Civil, Environmental and Architectural Engineering, Korea University, Anam-Dong 5ga, Seongbuk-Gu, Seoul 163-701, Korea.
authors: Jiyeol
authors: J
authors: Im
mesh_terms: D011890:Railroads; D014876:Water Pollution / Q000032:analysis*
keywords: concrete road-bed; first flush criteria; first flush effect; non-point source pollution; railway