title: Quality and first flush analysis of stormwater runoff from a tropical commercial catchment.
abstract: This paper examines the storm runoff quality from a commercial area in south Johor, Malaysia. Six storm events with a total of 68 storm runoff samples were analyzed. Event Mean Concentration (EMC) for all constituents analysed showed large inter-event variation. Site mean concentrations (SMC) for total suspended solids (TSS), oil and grease (O&G), biochemical oxygen demand (BOD), chemical oxygen demand (COD), nitrate-nitrogen (NO(3)-N), nitrite-nitrogen (NO(2)-N), ammonia-nitrogen (NH(3)-N), total phosphorus (Total P) and Soluble P are 261, 4.31, 74, 192, 1.5, 0.006, 1.9, 1.12 and 0.38 mg/L, respectively. The SMCs at the studied site are higher than those reported in many urban catchments. The mean baseflow concentrations were higher than the EMCs for COD, Soluble P, NH(3)-N, NO(3)-N, Total P and NO(2)-N. However, the reverse was observed for TSS and O&G. All pollutants showed the occurrence of first flush phenomenon with the highest strength was observed for TSS, COD and NH(3)-N.
authors: Institute of Environmental & Water Resource Management (IPASA), Universiti Teknologi Malaysia, 81310 Skudai, Johor Darul Ta'zim, Malaysia. mingfai1983@yahoo.com
authors: M F
authors: MF
authors: Chow
authors: Z
authors: Z
authors: Yusop
authors: M
authors: M
authors: Mohamed
mesh_terms: D004784:Environmental Monitoring; D013995:Time; D013997:Time Factors; D014329:Tropical Climate; D014865:Waste Disposal, Fluid / Q000379:methods*; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D014874:Water Pollutants, Chemical