Owner of #GoldKingMine not happy with proposed cleanup solution — The Durango Herald

Bulkheads, like this one at the Red and Bonita Mine, help stop mine water discharges and allow engineers to monitor the mine pool. Credit: EPA.

From The Durango Herald (Jonathan Romeo):

Local groups call for plugging of discharging mines

Todd Hennis, owner of the Gold King Mine, is not happy about the proposed Superfund cleanup around Silverton, saying the suggestion to plug more mines only redistributes potentially toxic water and doesn’t solve the problem…

In December, two community groups formed to help guide the Superfund process – the Citizens Advisory Group and the Silverton-San Juan County Planning Group – submitted letters to the EPA with a similar recommendation.

The main message: focus on the sites – namely the Gold King, American Tunnel, Mogul and Red & Bonita – which are contributing the most amount of contaminated metals into Cement Creek, a tributary of the Animas River.

According to data from the now-defunct Animas River Stakeholders Group, almost half of all metal loading from the 120 draining mines sampled around Silverton comes from these four sources.

And the suggested solution? Place more bulkheads.

“While currently the (Bonita Peak) enjoys high-priority status as a Superfund site, the (community group) is quite concerned its priority could change in the future,” the CAG wrote. “… Bulkheads can be funded with manageable, annual budgeting, unlike a large water treatment facility, which may need a big financial infusion all at once.”

Hennis, for his part, has long maintained that the original bulkheads placed on the American Tunnel caused his mines to start to discharge mine wastewater. Sunnyside Gold has adamantly denied the Sunnyside Mine is connected geologically to Hennis’ mines.

Regardless, Hennis said he was “shocked and appalled” to learn the community groups were in favor of more bulkheads as a main treatment option.

“Bulkheading doesn’t work,” Hennis wrote. “It appears all they accomplished in the long term was to re-distribute acid mine water flows elsewhere, and in the same volume as the original problem.”

Hennis says that if the Gold King and Red & Bonita are plugged, it could shift water back into the American Tunnel, where bulkheads there could be overwhelmed.

“Rolling the dice on a potential catastrophic failure of the American Tunnel bulkheads makes no sense whatsoever,” he said. “If a release of 3 million gallons of mine water from the Gold King raised absolute havoc downstream, a potential release of billions of gallons from the Sunnyside Mine Pool would have unthinkable consequences.”

Hennis instead said the only long-term solution would be to drain the Sunnyside Mine pool, treat the water and shut off spots where water gets into the Sunnyside Mine network.

But this could be costly.

Richard Mylott, spokesman for EPA, said the agency is working to understand the impacts that bulkheading would have on water quality and water levels within the Cement Creek area…

Mylott said EPA has installed several wells to monitor the groundwater system when it tests the closure of the Red & Bonita.

Prior to mining, snowmelt and rain seep into natural cracks and fractures, eventually emerging as a freshwater spring (usually). Graphic credit: Jonathan Thompson

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