The Wagerup Alumina Refinery revised proposal is to construct and operate the Wagerup Alumina Refinery to a maximum production capacity of 4.7 million tonnes per annum (Mtpa) and its associated bauxite mining.

The proponent for the proposal, Alcoa of Australia (Alcoa), requested an extension of the Time Limit of Authorisation for substantial commencement (now referred to as the Time Limit of Proposal Implementation) to be extended by five years to 14 September 2021 as the third production unit had not yet been constructed. In response, the Minister for Environment requested (17 February 2016) that the EPA inquire into and report on the matter of changing implementation conditions for the Wagerup Alumina Refinery (Ministerial Statement 728).