#AnimasRiver: Water-treatment system announced for #GoldKing — The Durango Herald

New settlement ponds at Gold King Mine August 2015
New settlement ponds at Gold King Mine August 2015

From The Durango Herald (Peter Marcus):

The $1.78-million portable treatment facility will be located in Gladstone, according to EPA officials. It will be operational by Oct. 14 and operate during the coming winter. The contract provides for 42 weeks of treatment, with the option to start or stop treatment as needed…

Water continues to flow from the mine at approximately 550 gallons per minute. Without the plant, officials have had to rely on a series of settling ponds to capture the dirty water before being discharged to Cement Creek.

Authorities constructed four ponds at the mine site, which are treating water to remove as much metal loading as possible. The treatment plant will replace the ponds.

EPA officials estimate the plant will cost $20,000 per week to operate, with another $53,200 for demobilization and bonding. EPA will use money from its Superfund coffers to pay for the project. Superfund money is used to clean up blighted areas that could be toxic to humans. Gold King still has not officially been listed as a Superfund site.

The bidding process for the plant was conducted by St. Louis-based Environmental Restoration, LLC, the contractor that was working with the EPA when the spill occurred. The treatment-system contract was awarded to subcontractor Alexco Environmental Group Inc., which has an office in Denver.

Officials said the transition to the plant is necessary as winter temperatures at high elevations can reach well below zero, making it unsafe to manually treat water at the mine site. The system is designed to handle up to 1,200 gallons per minute.

“The objective of the treatment system is to neutralize the mine discharge and remove solids and metals,” stated an EPA news release announcing the facility. “Although the Gold King Mine discharge is just one of many into Cement Creek, the treatment will remove a portion of the metal loading to Cement Creek.”

Though the system is temporary, long-term treatment will be decided after further evaluation of mine discharge, said an EPA spokeswoman.

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