The separation of noise-generating activities from noise-sensitive situations is an important strategy for minimizing the impact of noise. The siting of noise emitting activities together minimises the area of land subject to raised noise levels.
The Environment Protection Policy (Noise) 2009 recognizes the importance of controlling noise emissions by best practice environmental management and that, once approved, an activity that emits noise should be protected from encroachment by noise sensitive developments.
There are some competing desires, such as minimization of transport distances and maximizing area utilization, which work against the use of separation distance as a cost-effective control for noise impact. There are a set of standard recommended attenuation distances (SRADs) that has been established to provide guidance for siting residences and commercial and industrial activities in the same neighbourhood.