The lead Aboriginal organisation in talks with the State Government over the proposed $40 billion gas hub at James Price Point near Broome has appealed against the Environmental Protection Authority's approval of the project.
It says the project threatened to leave Aboriginal people in the Kimberley worse off.
The Kimberley Land Council said the EPA's report was "virtually silent" on the project's social and cultural effects and traditional owners could be forced to withdraw their support.
KLC chief executive Nolan Hunter denied the EPA was unable to address the effects under its remit, saying the strategic assessment agreement signed by the State and Federal governments in 2008 made it a requirement for approval.
In 2010, the KLC gave an Aboriginal social impact assessment to the State Government to feed into the strategic assessment with more than 75 recommendations to minimise social and cultural impacts.
On July 16, the EPA approved the project with 29 conditions.
Mr Hunter said Goolarabooloo and Jabirr Jabirr traditional owners granted conditional approval on the basis that social, environmental, economic and cultural heritage impacts on Aboriginal people would be addressed.
But he said the State Government was yet to adequately address their concerns, meaning Aboriginal people could be worse off.
He said this was of grave concern to Kimberley Aboriginal people.
The EPA said that where Aboriginal cultural and social connections to the environment were likely to be affected, it could identify physical and biological elements as key environmental factors.
Approving the project, EPA chairman Paul Vogel said heritage matters were "extensively addressed" in agreements between traditional owners and the State and indigenous interests were heard properly and considered.
But Mr Hunter said aspects of the project would cause "significant disturbance" to indigenous heritage values.
Appeals convenor Dr Roy Green is in Broome to plough through the 244 appeals against the project.
Mr Hunter said: “There are hundreds of pages addressing project impacts on whales, turtles, plants and dinosaur footprints but the EPA’s report is virtually silent on … the role of traditional owners in assessing and monitoring the impacts of the project."A spokesman for Premier Colin Barnett said both levels of government were working through the cultural and social impacts as part of the Federal environmental approval process.
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