Environmentally Sensitive Stormwater Design
Abstract
The Olympic Softball Stadium - An example of Environmentally Sensitive Stormwater Management
In recent times much has been said about Environmentally Sensitive Stormwater Design, Source Controls, Total Catchment Management and a "Series Treatment Train" approach to stormwater management. As yet few developments actually embody these strategies. Aquilina Reserve is located within the Department of Urban Affairs and Planning, Eastern Creek Corridor at Rooty Hill and is the site for the Olympic Softball Stadium. There are many constraints on the site including an existing wetland, threatened vegetation, dispersive soils and an ecologically sensitive creek line. After much deliberation between Blacktown City Council, the Olympic Coordination Authority and their consultants, Sinclair Knight Merz, a stormwater management system has been designed that embodies the principles of Ecologically Sustainable Development. Kerb and gutter and formal drainage systems have been minimised, and runoff is conveyed to a wetland treatment system through a series of bio-filtration swales, filter drains and sand filters. The overland flow regime to the existing River Flat Forest and Eastern Creek has been maintained, and pollutant controls have been incorporated into an integrated "Series Treatment Train" approach to manage stormwater quantity and quality. This paper will describe each step in the process and go through the various aspects of the stormwater management practices employed on the site.