Acid Sulphate Soils in NSW:  http://www.environment.nsw.gov.au/acidsulfatesoil/index.htm

Native Fish Passage:  http://www.dpi.nsw.gov.au/fisheries/habitat/threats/barriers

Sewerage Management Systems: http://www.dlg.nsw.gov.au/Files/Information/section5.pdf(813Kb)

Urban Stormwater Management: http://www.environment.gov.au/coasts/publications/stormwater/index.html