FORT COLLINS, Colorado - Colorado regulators said a damaged storage tank dumped 7,500 gallons of crude oil into the Poudre River Friday near Windsor.
Colorado Oil and Gas Conservation Commission spokesman Todd Hartman said the oil has stained vegetation up to a quarter-mile away, but no drinking water intakes have been affected.
Officials said the bank where the storage tank sat on the river was undercut by spring flood waters, causing it to drop and break a valve.
The release is not ongoing, Hartman said.
Noble Energy discovered the spill and reported it to the oil and gas conservation commission.
Clean-up crews are trying to absorb the spilled oil and a vacuum truck removed oily water from a low-lying area near the tank.
Hartman said a second tank nearby appears to be unaffected.