There will be a detailed preliminary design phase that will consider the concept in greater detail. This may include engineering design, geotechnical investigations and developing a greater understanding of environmental and social dimensions of the design. The preliminary design will consider matters that will be required by the NSW government under the Environmental Planning and Assessment Act 1979 (EP&A). As the level of detail and knowledge increases, the UHH team will engage with the broader community to gather social information and views; these will be key inputs into the EP&A process.