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Urban Traffic Characteristics and Urban Stormwater Quality: A Methodology to Measure Traffic Generated Water Pollutants
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Author(s): Janaka Gunawardena (Queensland University of Technology, Australia), Ashantha Goonetilleke (Queensland University Of Technology, Australia), Prasanna Egodawatta (Queensland University Of Technology, Australia), Godwin Ayoko (Queensland University of Technology, Australia)and Jason Kerr (Queensland University of Technology, Australia)
Copyright: 2010
Pages: 18
Source title:
Rethinking Sustainable Development: Urban Management, Engineering, and Design
Source Author(s)/Editor(s): Tan Yigitcanlar (Queensland University of Technology, Australia)
DOI: 10.4018/978-1-61692-022-7.ch012
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Abstract
Traffic generated pollutants are a significant threat to achieving sustainable urban and transport development goals. This chapter presents a comprehensive methodology formulated to estimate traffic generated key pollutants to receiving water, based on urban traffic and climate variables. The overall purpose of this research is to aid decision makers in assessing the long term sustainability of urban waterways by providing a methodology for predicting key pollutant loads to receiving waters for future traffic growth and climate change scenarios. There are five key steps in the methodology, which are: air sampling and testing, dry pollutant deposition sampling and testing, pollutant build-up sampling and testing, data analysis and development of mathematical relationships, and mathematical modelling. The methodology focuses on polycyclic aromatic hydrocarbons, heavy metals and particulate matter as they are the key traffic generated pollutants found in urban stormwater and receiving waters. Firstly, mathematical relationships are developed to establish linkages between traffic generated pollutants present in the atmospheric and ground phases. Secondly, mathematical relationships are developed to predict the variation of pollutant concentrations with traffic and climate parameters, thereby formulating a methodology to predict traffic generated key pollutant loads on urban road surfaces. As part of the research methodology, mathematical modelling is carried out to predict receiving water quality changes due to pollutant wash-off from urban road surfaces. The study sites were selected to represents traffic characteristics in the Gold Coast region, Australia. The outcomes of this research study will help regulatory authorities to formulate strategies to reduce traffic generated key pollutant loads to urban waterways under future traffic and climate change scenarios. This, in turn, will help to ensure the long term sustainability of urban water systems.
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