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TUCSON, Ariz. -- Opponents of the proposed copper mine near Tucson have filed a lawsuit seeking to overturn a state decision awarding a groundwater protection permit.

The permit allows the Rosemont Copper Co. to discharge materials if it can show it's using the best available technology to keep pollutants from reaching groundwater.

The suit challenges the July decision by the State Water Quality Appeals Board to uphold issuance of the permit by the Arizona Department of Environmental Quality in April 2012.

Rosemont Copper executive Kathy Arnold says the law judge ruled on 500 findings of fact and reached 33 conclusions in support of ADEQ's work.

Arnold told the Arizona Daily Star that she's confident the permit will survive and that the suit won't delay Rosemont's permitting and construction timelines.


Information from: Arizona Daily Star,

Associated Press,

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