An impact assessment approach for car park runoff

Revitt, D. Mike, Lundy, Lian ORCID: https://orcid.org/0000-0003-1155-4132 and Ellis, John Bryan (2014) An impact assessment approach for car park runoff. In: 13th International Conference on Urban Drainage. Kuching, Sarawak, Malaysia, 7-12 September 2014, Kuching, Sarawak, Malaysia. . [Conference or Workshop Item]

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Abstract

Traffic emissions contribute significantly to the build-up of diffuse pollution loads on urban surfaces with their subsequent mobilisation and direct discharge posing problems for receiving water quality. Although there are variabilities in the discharged pollutant levels and in the potentials for pollutant mitigation it has been possible to incorporate representative values into an impact assessment of car park runoff. Using this approach has enabled a prioritization of the treatment options which are available for pollutant reductions whilst conforming to the site requirements of a typical car park. By applying different treatment scenarios to the runoff from a hypothetical car park, it is shown that optimal performance, in terms of ecological benefits for the receiving water, can be achieved using a treatment train incorporating permeable paving and bioretention systems.

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