A gasoline spill raised alarms about Animas River impacts near Durango. The risk is small, not gone, experts say.

A gasoline spill raised alarms about Animas River impacts near Durango. The risk is small, not gone, experts say.

LA PLATA COUNTY — Officials and experts monitoring a gasoline spill in southwestern Colorado say they are certain — almost — that the nearby Animas River is not at risk. Residents have their doubts. A pipeline spilled about 23,000 gallons of gasoline in December, releasing benzene and other contaminants into a mesa uphill from the Animas River south of Durango. The underground plume is mainly moving south, not southwest toward the river, but the…