By Chase Olivarius-Mcallister , Mary Shinn and Shane Benjamin Herald staff writers
Acidic wastewater from an abandoned mine above Silverton coursed its way through La Plata County on Thursday, turning the Animas River orange-brown, forcing the city of Durango to stop pumping raw water from the river and persuading the sheriff to close the river to public use.
Residents lined the banks of the Animas River on Thursday afternoon to watch the toxic wastewater as it flowed through Durango city limits. But the sludge slowed as it snaked its way through the oxbow in the Animas Valley, and the murk didn’t arrive until after 8 p.m.
The accident occurred about 10:30 a.m. Wednesday at the Gold King Mine in San Juan County. A mining and safety team working on behalf of the Environmental Protection Agency triggered the discharge, according to a news release issued by the EPA.
The EPA’s team was working with heavy equipment to secure and consolidate a safe way to enter the mine and access contaminated water, said Richard Mylott, a spokesman for the EPA in Denver. The project was intended to pump and treat the water and reduce metal pollution flowing out of the mine into Cement Creek, he said.
The disaster released about 1 million gallons of acidic water containing sediment and metals flowing as an orange-colored discharge downstream through Cement Creek and into the Animas River.
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