An on-scene coordinator with the Environmental Protection Agency has voiced concerns about how effective efforts at the old Atlas Mill site will be in the longterm at keeping mine tailings runoff out of Sneffels Creek.

During the public comment portion of Tuesday’s Board of County Commissioner meeting, Mike McComb, who is overseeing a project at the Camp Bird Mine, told commissioners that though the EPA is supportive of the work being done it is a “tough call.”

McComb said the EPA does n...