Mitch Fifield (Victoria, Liberal Party, Assistant Minister for Social Services) Share this | Hansard source

Some of the documents sought by Senator Ludlam are either West Australian government documents or documents not required under national environmental law. As with all projects assessed under the EPBC Act, these projects are subject to a robust and transparent assessment process. Documents relevant to matters of national environmental significance have been made public and there has been ample opportunity for Senator Ludlam or any other interested parties to provide comment. The documents relating project details are commercial-in-confidence and may prejudice Commonwealth-state relations.

A 30-page summary business case for the Perth freight link was publicly released in December 2014, which details a breakdown of the benefit cost analysis results, the problems the project will resolve, the current challenges facing Western Australia and the frieght system, and the scope of the project.