Performance of an enhanced pervious pavement system loaded with large volumes of hydrocarbons

Alan Newman, T. Puehmeier, A. Shuttleworth, C.J. Pratt

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    Five litres of lubricating oil and two 8.5 litre batches of diesel were deposited on each of two hydraulically isolated experimental enhanced pervious pavement parking bays. The 50 mm aggregate subbases of the two bays were of either recycled concrete or crushed limestone. The bays were constructed in such a way that a near-surface gravity separator was created by the arranging of the outlet pipes such that a permanent pool of water was maintained in the system and water could only enter from below the level of any floating oil. Dissolved/dispersed hydrocarbons were measured at acceptable concentrations when monitoring was carried out over a period of approximately 5 months. The maximum concentration was 7.2 mg/l and of all the samples collected only 3% exceeded the 5 mg/l limit applied in the UK for a class 1 interceptor, and the majority of samples had hydrocarbon concentrations of less than 2 mg/l. Much more significant is the fact that no free product was discharged from either system up to the time the experiment was dismantled 2 years from the first oil application despite the fact that sufficient hydrocarbon had been added to each pavement to produce a film on a water surface of over 500 hectares.
    Original languageEnglish
    Pages (from-to)835–842
    JournalWater Science and Technology
    Issue number5
    Publication statusPublished - 2014

    Bibliographical note

    ©IWA Publishing 2014. The definitive peer-reviewed and edited version of this article is published in Water Science and Technology, 70 (5), pp. 835-842, 2014. DOI: 10.2166/wst.2014.301 and is available at


    • hydrocarbons
    • pervious pavements
    • sustainable drainage systems


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