Supreme Court chief justice rules against controversial Kimberley gas hub approvals - ABC News (Australian Broadcasting Corporation)
The ruling could also have ramifications for other projects.
Lawyer Patrick Pearlman says other decisions made by the EPA could be called into question.
"My understanding is that there are a number of other EPA proceedings in which questions about section 12 interests arose and I've got a number, something like 40 running around in my head, where that question applies," he said.
"Whether or not it has any fallout from that, I suppose, is probably something for Parliament."
The Wilderness Society hopes the court ruling will be the end of any development at James Price Point, and says it will fight any further development applications.
The Greens have also called on the Government to abandon any future attempts to industrialise the site but Mr Barnett says the government will most likely re-submit its plans to the EPA.
The Premier is confident the original approval will stand.
"Most fair-minded people would acknowledge that the environmental decision itself is correct, what was invalid is the actual process," he said.
The State Government has been pushing ahead with plans to compulsorily acquire the land.
It plans to secure almost 3,500 hectares of land on the coast north of Broome in case other companies would like to pursue the development.
Woodside, with its partner Shell, is believed to be pursuing floating LNG technology for its Browse Basin gas, an offshore processing option.