Silverton officials may decide Thursday to send a letter to Gov. John Hickenlooper seeking Superfund status to help clean mine wastewater that seeps from nearby mines into the Animas River. The problem came into the public spotlight Aug. 5, 2015, when the Environmental Protection Agency accidentally triggered a blowout at the Gold King Mine above Silverton, sending a plume of heavy-metal laden bright-orange mine sludge down the river.

Jerry McBride/Durango Herald file photo

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Silverton officials may decide Thursday to send a letter to Gov. John Hickenlooper seeking Superfund status to help clean mine wastewater that seeps from nearby mines into the Animas River. The problem came into the public spotlight Aug. 5, 2015, when the Environmental Protection Agency accidentally triggered a blowout at the Gold King Mine above Silverton, sending a plume of heavy-metal laden bright-orange mine sludge down the river.

Jerry McBride/Durango Herald file photo

It’s going to be a busy and potentially landmark week for the town of Silverton as officials look to stamp a letter addressed to Gov. John Hickenlooper requesting Superfund status by Thursday.

All this week, Silverton Town Trustees along with San Juan County Commissioners will enter final negotiations with the Environmental Protection Agency over its hazardous cleanup program with the hopes of a final vote on Thursday. The town will also hold a public hearing Tuesday.

“We’re negotiating the next 20 to 30 years of our county,” said Silverton Town Trustee Pete Maisel. “So it’s weighing pretty heavy on our shoulders.”

For more than 20 years, Colorado’s least-populated county, with an estimated 600 residents, has rejected federal intervention to address the vast mining network discharging water laden with heavy metals into tributaries of the Animas River.

The once-thriving mining town, sitting at 9,302-feet, was forced to transition into a tourism-dependent economy when the last operating mine shut down for good in 1991. It was feared among residents a Superfund designation would not only eliminate any chance of mining’s return, but also harm the town’s image for vacationers choosing a destination.

Despite local efforts, the long-inactive mining district has degraded water quality in the Animas River to the point that the presence of trout has all but disappeared in the 25-mile stretch downstream from Silverton, with 3 out of 4 species now gone.

But when the EPA accidentally triggered the Gold King Mine blowout in August, the sight of a disturbing bright-orange river cast a normally unseen problem into the spotlight of public attention. For Silverton officials under pressure from downstream communities, few options were left aside from a Superfund status.

“There’s really no other program out there with the financial resources to take care of the necessary remediation for this area,” San Juan County Manager Willie Tookie said in November. “Superfund is pretty much it.”

The EPA considers polluting sites for its National Priorities List twice a year: once in March and again in September. To be considered this spring, Silverton officials must send a letter to Hickenlooper, directing the governor to request Superfund status.

Throughout negotiations, three main points of contention have emerged: the boundaries of the Superfund designation; the promise of federal funding; and the name of the Superfund project.

“This is not going to be a fast solution, but we’re also not dragging our feet,” Maisel said. “Negotiations are going well, we’re working hard on it.”

jromeo@durangoherald.com