DENVER—Colorado health officials say a company’s plans to reduce uranium in groundwater at a mine near Golden are not acceptable.
Cotter Corp. has submitted a plan to state mining regulators to reduce uranium levels in Ralston Creek from the closed Schwartzwalder Mine. The water flows into a reservoir that supplies some of Denver’s drinking water.
The Water Quality Control Division of the state health department told mining regulators in a memo Monday that Cotter’s plan doesn’t reduce uranium in the water to acceptable levels.
Cotter officials said Tuesday they haven’t seen the memo and couldn’t comment.
The state Office of Mined Land Reclamation expects to decide by May 19 whether to approve or reject Cotter’s plan or seek more information.
