ABANDONED MINES, CONTAMINATED WATER

The Denver Post, Monday, August 10, 2015; 
Experts estimate 55,000 sites in West
BY NICHOLAS RICCARDI
THE ASSOCIATED PRESS
Beneath the western United States lie thousands of old mining tunnels filled with the same toxic stew that spilled into a Colorado river last week, turning it into a nauseating yellow concoction and stoking alarm about contamination of drinking water.

Though the spill into the Animas River is unusual for its size, it’s only the latest instance of the region grappling with the legacy of a centuries-old mining boom that helped populate the region but also left buried toxins.

Until the late 1970s, there were no regulations on mining in most of the region. Abandoned mines fill up with groundwater and snowmelt that becomes tainted with acids and heavy metals from mining veins which can trickle into the region’s waterways. Experts estimate there are 55,000 such abandoned mines from Colorado to Idaho to California, and federal and state authorities have struggled to clean them for decades. The federal government says 40 percent of the headwaters of Western waterways have been contaminated from mine runoff.

The Clean Water Act says that anyone who contributes to pollution of a waterway can be prosecuted for a federal crime, even if they were trying to clean up pollution. That’s kept environmental groups from helping the EPA treat water and tidy up mines.

Bruce Stover, the Colorado Department of Mining official in charge of dealing with abandoned mines, said it was particularly galling that the Animas was contaminated by the very chemicals that environmental officials have been trying to remove from its watershed.

“We’ve been fighting this war for years,” he said. “And we’ve lost a battle. But we’re going to win the war.”

 a battle. But we’re going to win the wr”

 

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