State Significant Development(SSD)  
  A development declared under Part 4 Division 4.1 of the Environmental Planning and Assessment Act 1979 (NSW) to be State Significant Development. A State Environmental Planning Policy is the most common way in which development is declared to be SSD. This includes types of developments such as mines and manufacturing plants as well as warehousing, waste, hospital and energy facilities that are over a certain size or located in a sensitive environmental area. The Minister may also declare a particular development to be a SSD. SSD projects are subject to a different approval process. Different processes apply to SSD applications such as public participation provisions and the mandatory submission of an Environmental Impact Statement.