You will need to be registered as an environmental practitioner or auditor if you intend to undertake an environmental audit. Environmental audits are needed if works or actions may impact the environment or an environment protection approval holder has contravened a condition of their licence.
An environmental audit is a documented evaluation of an action and its environmental impact. The purpose of an environmental audit is to provide information regarding compliance with legal requirements, to determine if the action can be improved so to protect the environment and to assess the nature, type and intensity of environmental impacts.