It is estimated the project will use 2.7 gigalitres of groundwater a year, and the EPA has recommended aquifer levels and water usage be monitored in real-time with data made available to the public.
Uranium has been mined at Ranger for three decades, making it Australia's longest continually operating uranium mine.
In mid-October, after the Mirarr formally confirmed their support for the position taken publicly by Rio Tinto, ERA advised the Australian Stock Exchange that it respects "the views of the Traditional Owners and will undertake a review of its business in the light of their decision".
ERA said it would undertake a review of its business in light of the decision, and was assessing whether an impairment was necessary.
"ERA's failure to contain this fire demonstrates that nature does not discriminate between a uranium mining lease and a world heritage listed national park. This is one continuous landscape and this situation has huge implications for the future rehabilitation of the mine site"