An impact assessment methodology for urban surface runoff quality following best practice treatment.
The paper develops an easy to apply desk-based semi-quantitative approach for the assessment of residual receiving water quality risks associated with urban surface runoff following its conveyance through best practice sustainable drainage systems (SUDS). The innovative procedure utilises an integrated geographical information system (GIS)-based pollution index approach based on surface area impermeability, runoff concentrations/loadings and individual SUDS treatment performance potential to evaluate the level of risk mitigation achievable by SUDS drainage infrastructure. The residual impact is assessed through comparison of the determined pollution index with regulatory receiving water quality standards and objectives. The methodology provides an original theoretically based procedure which complements the current acute risk assessment approaches being widely applied within pluvial flood risk management.
Urban Pollution Research Centre, Middlesex University, The Burroughs, Hendon, London NW4 4BT, UK.
J Bryan
JB
Ellis
D Michael
DM
Revitt
Lian
L
Lundy
D002947:Cities; D003247:Conservation of Natural Resources / Q000379:methods; D040362:Geographic Information Systems; D018570:Risk Assessment; D014872:Water Movements; D014876:Water Pollution / Q000517:prevention & control; D060753:Water Quality / Q000592:standards