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GOLDEN — Colorado health officials say Cotter Corp.’s plans to reduce uranium in groundwater at a mine near Golden are not acceptable.
Cotter 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.
