- Associated Press - Sunday, March 23, 2014

CINCINNATI (AP) - Repairs have begun on a pipeline that leaked more than 10,000 gallons of crude oil into a suburban nature preserve.

Officials said Sunday that repairs approved by the U.S. Department of Transportation are underway on the pipeline that leaked in the Oak Glen Nature Preserve in suburban Cincinnati. A Colerain Township fire department release says more than 31,000 gallons of combined water and oil have been recovered in cleanup of the contaminated area.

The leak discovered March 17 came from a 5-inch crack in the pipeline. Federal investigators are trying to determine what caused the crack.

The oil leaked into an intermittent stream and an acre-sized marshy area in the preserve

Officials say no problems have been found with air quality or water wells in the area.