After the first of what will likely be a multi-day effort, officials offered more detail about what may have caused the spill.
The sheen was first reported Jan. 18 near the Cannery Pier Hotel. It has been concentrated near the hotel but was visible about 5 miles along the river at its peak.
Other affected areas — including the Hammond Mooring Basin — have been cleaned up, while a containment boom has been placed near the hotel. Oil has also been spotted on boats in the area.
Read the whole story at The Daily Astorian.