B4.B Occupation and evacuation


    Objectives

  • New development provides appropriate and safe evacuation methods and mitigates risks to life and property.


      Controls

      B5.14 Vehicular access to the development, from the public road, will not be inundated by water to a level of more than 0.3m during the current 1% AEP event.

      Note

      Where the flood immunity of the connecting public road is lower than the target flood immunity, Council may consider a reduced flood immunity of the vehicular access to the level of the adjoining public road.

      B4.15 Earthworks for driveways and access must consider impacts on local drainage and localised flooding. Driveways should be designed and constructed in accordance with Councils standard design drawings.

      Note

      Earthworks for driveways and access must satisfy the objectives of the LEP.

      B4.16 The application must demonstrate occupants can evacuate offsite. Evacuation is only considered safe where there is a clear egress path from the site to a safe area with adequate services that is either low hazard or not inundated by a water level of more than 0.3m during the current 1% AEP design flood event.

      B4.17 Emergency onsite flood refuges are only supported if all other design and siting options to facilitate development have been assessed and demonstrated as unsuitable.

      Note

      Evacuation involves moving people threatened by a flood to a safer location and, typically, their eventual safe and timely return. Evacuation is the primary emergency management strategy for flooding in NSW. Flooding may displace individuals, require people to relocate or disrupt essential services to communities for hours, days or even weeks.

      Before a flood, getting people to evacuate offsite to an area not affected by flooding is considered the best way to keep people safe and reduce the impacts of an emergency on a community.

      Shelter in place (SIP) may only be considered if safe evacuation has been investigated and determined to be unachievable. Where SIP is proposed, the FIRA must provide detailed advice on the suitability of SIP including detailed assessment of the onsite flood behaviour within the context of emergency management. Further information required in the FIRA is detailed in the DASH.